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X-WR-CALDESC:Events for Department of Aerospace Engineering
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TZID:Asia/Kolkata
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TZOFFSETFROM:+0530
TZOFFSETTO:+0530
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DTSTART:20240101T000000
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BEGIN:VEVENT
DTSTART;TZID=Asia/Kolkata:20260223T160000
DTEND;TZID=Asia/Kolkata:20260223T170000
DTSTAMP:20260415T004141
CREATED:20260220T070846Z
LAST-MODIFIED:20260220T070846Z
UID:10000116-1771862400-1771866000@aero.iisc.ac.in
SUMMARY:"Aerospace power as a critical tool of statecraft”
DESCRIPTION:Air Marshal TD Joseph examines aerospace power as a critical instrument of statecraft\, highlighting\nits strategic\, coercive\, and diplomatic roles in modern conflict and international relations. The latest\nexample is India itself choosing aerospace power as the first instrument of choice to punish the\nenemy as in ‘Op Sindoor’. Drawing on historical and contemporary examples from conflicts across\nthe globe and India’s own operations as well as humanitarian relief missions\, he explains how\nairpower shapes outcomes through compellance\, deterrence\, and soft power applications. Synergy\nbetween aerospace and surface forces\, and technological asymmetry are critical to success. Air\npower lends itself to dual use in both hard and soft diplomacy as well as in nation building.\nUltimately\, aerospace power emerges as a decisive yet complementary tool for achieving national\nobjectives. \nSpeaker : Air Marshal TD Joseph\n\nBiography :\n\nAir Marshal TD Joseph\, AVSM\, VM\, VSM (Retd) was commissioned as a Fighter Pilot in the IAF\non 29th December 1982. He has flown various fighter and trainer aircrafts accumulating over 3800 hours of\nflying. \n\nThe Air Marshal has commanded a frontline Fighter Squadron\, the prestigious Flying Instructors’ School\, and\nAir Force Station Hindan\, near Delhi. He has held important Command and Staff appointments across the\ncountry in field and headquarter organisations. His last appointment was as Senior Air Staff Officer (SASO) of\nTraining Command where he was responsible for ab-initio and in-service training of officers\, airmen and noncombatants\nof the entire IAF. \n\nHe is a Category ‘A’ Qualified Flying Instructor and an Instrument Rating Instructor & Examiner; alumnus\nNational Defence Academy\, Pune and DSSC Wellington. He attended Royal College of Defence Studies\,\nLondon\, has master’s Degrees from University of Madras and King’s College London\, and MPhil from\nUniversity of Madras. Besides graduating at the top of his Air Force Course\, the Air Marshal stood First in\nJungle & Snow Survival Course\, Instrument Rating Instructor &Examiner Course\, and Air Staff Course. \n\nAuthor of a book entitled “Winning India’s Next War” (2007)\, he has written chapters in edited books and other\npublished articles on air strategy and security. \n\nAir Marshal Joseph was conferred with the Presidential awards of Vayusena Medal in 2003\, Vishsisht Seva\nMedal in 2010 and Ati Vishsisht Seva Medal in 2021. The Air Marshal hung his blue uniform on 31st July 2021\nafter 38 ½ years of service. \n\nHe is married to Mrs Sophie Joseph\, an educator\, and they have two sons\, the elder one with the World Bank\,\nand the younger one\, an aviator with Indigo Airlines
URL:https://aero.iisc.ac.in/event/aerospace-power-as-a-critical-tool-of-statecraft/
LOCATION:Auditorium (AE 005)\, Department of Aerospace Engineering
CATEGORIES:AE Seminar
ATTACH;FMTTYPE=image/png:https://aero.iisc.ac.in/wp-content/uploads/2026/02/9f8421c2-1.png
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Asia/Kolkata:20260112T160000
DTEND;TZID=Asia/Kolkata:20260112T170000
DTSTAMP:20260415T004141
CREATED:20260109T053022Z
LAST-MODIFIED:20260112T112429Z
UID:10000110-1768233600-1768237200@aero.iisc.ac.in
SUMMARY:Ph.D. (Engg) : Compression & LVI of closed-cell metallic foam
DESCRIPTION:Innovative high-performance structural designs play a critical role in mitigating insecure events such as low-velocity and ballistic impacts. These events involve significant kinetic energies\, requiring structures that are lightweight\, safe\, and capable of absorbing energy effectively. Closed cell metallic foams have been widely adopted in aerospace\, marine\, civil\, mechanical\, and automotive industries due to their superior resistance to such impacts. Despite extensive research over the years\, further advancements are still required in the design of lightweight protective structures. In impact applications\, the impactor need not always strike perpendicular to the structure. Characterization of dissipation energies \, impact load histories\, and load–displacement curves under varying impact angles revealed\, Contact force intensity and penetration time decrease as the impact angle increases. Energy absorption increases while penetration time decreases with increasing impact angle. Contact force decreases and contact time increases as the angle decreases. Displacement under oblique impact increases with increasing angle. The study was extended to finite element simulations of low-velocity impact behaviour in silicon–aluminium composite foams using ABAQUS/Explicit®. Numerical estimations of both full and partial damage were carried out for different impactor shapes and velocities. Key parameters such as dissipation energies\, impact load histories\, and load–displacement behaviour under penetration were systematically reported. The numerical scheme was validated against available experimental results\, confirming the accuracy and reliability of the model. The following observations were made: Impact velocity effects: Contact force intensity and penetration time decrease with increasing impact velocity. Energy absorption increases while penetration time reduces as velocity increases. Impactor nose radius effects: Contact force reduces with smaller nose radii. Contact time is enhanced as the nose radius decreases. Impactor shape effects: The computed energy absorption effectiveness factor revealed that performance depends not only on material properties but is also strongly influenced by the geometry of the impactor. The study was further extended to numerical simulations of aluminium foam subjected to low velocity impacts. Both full and partial damage estimations were performed on foam samples across varying impact energies and thicknesses. Dissipated energy\, impact load histories\, and load–displacement responses were systematically reported under different penetration conditions. Foam samples with a thickness of 10 mm exhibited bending and global failure\, characteristic of thin plate behaviour. In contrast\, samples thicker than 10 mm underwent local failure\, displaying behaviour typical of thick plates. For partial penetration cases\, contact force\, dissipated energy\, deformation\, and penetration time all increased with rising impact energy. For fully penetrated samples\, contact force\, dissipated energy\, and deformation increased monotonically with impact energy\, while penetration time decreased significantly. Across all aluminium foam samples\, greater thickness led to monotonic increases in contact force\, dissipated energy\, deformation\, and contact time. These findings underscore the critical influence of plate thickness in governing the impact resistance of aluminium foam structures. Furthermore\, closed cell foam was modelled at the mesoscale to replicate the intrinsic geometry of real foam structures. LVT based 3-D models were employed to generate complex morphologies\, including irregular pore sizes\, uneven cell wall thicknesses & geometric variability. Morphological parameters such as equivalent diameter & sphericity factor were used to quantify pore size & irregularities. The influence of pore number & porosity on cell wall thickness was examined & the quasi-static compressive behaviour was assessed through load-displacement & stress-strain responses\, alongside energy absorption & plastic dissipated energies. Results revealed that plateau strength exhibited only a marginal increase with pore number\, while energy absorption showed a slight counterintuitive decline. Plastic dissipation energy increased monotonically with increasing pore number. Conversely\, increasing porosity led to a monotonic decrease in yield point\, energy absorption capacity & plastic dissipation energy. The study underscores that energy absorption capacity is strongly governed by porosity\, cell wall thickness & pore size. These parameters must be incorporated into the design of closed-cell foams to ensure safe & reliable performance in protective structural applications. \n  \nSpeaker: THIMMESH T \nResearch Supervisor: Dineshkumar Harursampath
URL:https://aero.iisc.ac.in/event/ph-d-engg-compression-lvi-of-closed-cell-metallic-foam/
LOCATION:STC Seminar Hall\, Dept. of Aerospace Engineering
CATEGORIES:AE Seminar
ATTACH;FMTTYPE=image/jpeg:https://aero.iisc.ac.in/wp-content/uploads/2026/01/Thim.jpg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Asia/Kolkata:20260105T150000
DTEND;TZID=Asia/Kolkata:20260105T170000
DTSTAMP:20260415T004141
CREATED:20260102T070038Z
LAST-MODIFIED:20260106T051847Z
UID:10000109-1767625200-1767632400@aero.iisc.ac.in
SUMMARY:Constructive Role of Noise in Oscillator Networks
DESCRIPTION:he constructive role of temporal disorder (random noise) in facilitating responses of nonlinear systems will be explored in this talk\, through a combination of experimental and numerical investigations. In particular\, nonlinear oscillators and nonlinear oscillator arrays will be considered. These oscillator systems represent models of micro-scale and macro-scale systems and energy harvester systems. It is discussed how noise can be used to transition from one dynamic to another\, including transition from a chaotic state to a periodic state\, influence energy localization\, and realize synchronization.\n\nSpeaker: Prof. B. Balachandran\n\nBiography:\n\nDr. Balachandran received his B. Tech (Naval Architecture) from the Indian Institute of Technology\, Madras\, India\, M.S. (Aerospace Engineering) from Virginia Tech\, Blacksburg\, VA and Ph.D. (Engineering Mechanics) from Virginia Tech. Currently\, he is a Distinguished University Professor and a Minta Martin Professor at the University of Maryland\, where he has been since 1993. His research interests include applied physics\, applied mechanics\, applied mathematics\, nonlinear phenomena\, dynamics and vibrations\, and control. The publications that he has authored/co-authored include a Wiley textbook entitled “Applied Nonlinear Dynamics: Analytical\, Computational\, and Experimental Methods” (1995\, 2004)\, a Thomson/Cengage textbook (2004\, 2009) and a Cambridge University Press textbook (2019) entitled “Vibrations\,” and a co-edited Springer book entitled “Delay Differential Equations: Recent Advances and New Directions” (2009). He holds four U.S. patents and one Japan patent\, three related to fiber optic sensors and two related to atomic force microscopy. He has served as the Editor of the ASME Journal of Computational and Nonlinear Dynamics\, a Contributing Editor of the International Journal of Non-Linear Mechanics\, and a Deputy Editor of the AIAA Journal. He is an ASME Fellow\, an AIAA Fellow\, an Honorary Fellow of the Royal Aeronautical Society\, an ASA full member\, and an IEEE Senior Member. He is a recipient of the ASME Melville Medal\, the Thomas Caughey Dynamics Medal\, the Den Hartog Award\, & the Lyapunov Award\, the ASCE Engineering Mechanics Institute Robert Scanlan Medal\, and the AIAA Pendray Aerospace Literature Award. He served as the Chair of the Department of Mechanical Engineering at the University of Maryland from May 2011 to December 2023 and ASME Applied Mechanics Division from 2018 to 2019.
URL:https://aero.iisc.ac.in/event/constructive-role-of-noise-in-oscillator-networks/
LOCATION:Auditorium (AE 005)\, Department of Aerospace Engineering
CATEGORIES:AE Seminar
ATTACH;FMTTYPE=image/jpeg:https://aero.iisc.ac.in/wp-content/uploads/2026/01/Balachandran.jpg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Asia/Kolkata:20251222T150000
DTEND;TZID=Asia/Kolkata:20251222T170000
DTSTAMP:20260415T004141
CREATED:20251222T043040Z
LAST-MODIFIED:20251222T081958Z
UID:10000105-1766415600-1766422800@aero.iisc.ac.in
SUMMARY:Digital Process Twins for Automated Manufacturing of Thermoplastic Composites: Challenges and Opportunities.
DESCRIPTION:Automated Fiber Placement (AFP) is transforming the fabrication of high-performance thermoplastic composites by enabling precision layup of fiber tows with spatially controlled heating and compaction. Yet\, the interplay of radiative heating\, heat diffusion\, and material flow during AFP remains one of the least understood links between process parameters and structural performance. This seminar presents a unified experimental and modeling framework to unravel these coupled multi-scale multi-physics phenomena and advance the creation of digital process twins for advanced manufacturing of composites. \nThe discussion will begin with the design and thermal characterization of a Xenon-arc flash heating system developed for in-situ processing of CF-PAEK tows. High-resolution irradiance mapping and infrared thermography reveal the dynamic spatial nonuniformity of heat flux during laydown\, providing direct insights into tow heating and cooling behavior. These experimental results are coupled with a physics-based “plug-flow” thermal model that captures the motion of the tow\, its interaction with the roller and substrate\, and the resulting anisotropic heat transfer under realistic AFP conditions. \nThe resulting digital process twin quantitatively predicts temperature evolution\, nip-point bonding conditions\, and crystallinity gradients; key factors governing consolidation quality and defect formation. By linking measured irradiance fields with validated numerical simulations\, this framework offers a predictive capability for optimizing processing parameters to achieve consistent microstructure and interlayer adhesion. The seminar will conclude with perspectives on integrating these models with in-situ sensing and machine learning to enable smart\, autonomous\, defect-tolerant composite manufacturing. \nSpeaker : Dr. Paul Davidson \nBiography: \nDr. Paul Davidson is an Assistant Professor of Mechanical and Aerospace Engineering at the University of Texas at Arlington\, where he leads the Digital Design and Advanced Manufacturing of Composite Structures research though the Laboratory of Advanced Materials\, Manufacturing and Analysis (LAMMA). His research integrates experimental mechanics\, multiscale modeling\, and machine learning to develop digital twins for automated composite fabrication and structural performance prediction. His work is supported by the Air Force Office of Scientific Research (AFOSR)\, the Air Force Research Laboratory (AFRL)\, the National Science Foundation (NSF)\, and the University of Texas System.
URL:https://aero.iisc.ac.in/event/digital-process-twins-for-automated-manufacturing-of-thermoplastic-composites-challenges-and-opportunities/
LOCATION:Auditorium (AE 005)\, Department of Aerospace Engineering
CATEGORIES:AE Seminar
ATTACH;FMTTYPE=image/jpeg:https://aero.iisc.ac.in/wp-content/uploads/2025/12/Paul.jpg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Asia/Kolkata:20251215T110000
DTEND;TZID=Asia/Kolkata:20251215T120000
DTSTAMP:20260415T004141
CREATED:20251210T103048Z
LAST-MODIFIED:20251213T093321Z
UID:10000100-1765796400-1765800000@aero.iisc.ac.in
SUMMARY:Flow-Aware Simulation Technique (FAST) for AI-Enabled\, Physics-Integrated Turbulence Computations
DESCRIPTION:Data-driven approaches have generated tremendous excitement in turbulence modeling\, but enthusiasm has often outpaced scientific rigor. Many current AI/ML turbulence models lack physical interpretability\, exhibit limited generalizability across flow regimes\, and do not reflect the true dynamical nature of turbulence. A new strategy is needed—one that leverages AI while remaining fully compliant with the physics of flow evolution. This talk proposes a flow-aware AI paradigm that integrates data-driven learning with physical constraints and local flow-regime awareness. Recognizing that turbulence spans a wide spectrum of coherent and stochastic behaviors\, we propose an adaptive framework that allows AI to dynamically select modeling pathways—switching between physics-based closures and selective scale resolution as conditions demand. This approach improves robustness in complex flow regimes\, enabling AI to enhance rather than replace traditional models. The presentation will clarify the limitations of current ML methods and illustrate how physics-aware hybridization can accelerate accurate and efficient turbulence simulations. The goal is not to abandon classical turbulence modeling\, but to augment it with AI-enabled predictive insight\, producing simulations that are consistently reliable\, interpretable\, and deployment-ready in unseen flows.  \nSpeaker : Prof. Sharath Girimaji \nBiography: \nDr. Sharath S. Girimaji is a Professor of Aerospace Engineering and Department Head of Ocean Engineering at Texas A&M University\, where he holds the Wofford Cain Chair position. His research expertise spans turbulence modeling\, computational fluid dynamics\, compressible and high-speed flows\, and complex fluid dynamics. Dr. Girimaji received his B.Tech from Indian Institute of Technology Madras (1983) and his M.S. and Ph.D. from Cornell University (1990). Before joining academia\, he spent nine years as a research scientist at NASA Langley Research Center. He has graduated 25 PhD students to date. He is a Fellow of the American Physical Society (APS) and an Associate Fellow of the American Institute of Aeronautics and Astronautics (AIAA).
URL:https://aero.iisc.ac.in/event/flow-aware-simulation-technique-fast-for-ai-enabled-physics-integrated-turbulence-computations/
LOCATION:STC Seminar Hall\, Dept. of Aerospace Engineering
CATEGORIES:AE Seminar
ATTACH;FMTTYPE=image/jpeg:https://aero.iisc.ac.in/wp-content/uploads/2025/12/Sharath.jpg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Asia/Kolkata:20251211T030000
DTEND;TZID=Asia/Kolkata:20251211T160000
DTSTAMP:20260415T004141
CREATED:20251210T063024Z
LAST-MODIFIED:20251213T092434Z
UID:10000099-1765422000-1765468800@aero.iisc.ac.in
SUMMARY:Normal modes and manoeuvre analysis in a closed form aircraft dynamic model
DESCRIPTION: In this seminar\, I will first introduce an empirical four-parameter formula for lift and drag on an airfoil\, which shows good fits to experimental data. I will then use this formula to obtain a closed form nonlinear dynamical model of the longitudinal or pitch plane motions of an aircraft. The method of time scale separation applied to this model will yield the algebraic approximations of the short period and phugoid modes\, the limits on centre of mass position as well as an explicit relation between the horizontal stabilizer deflection and the trimmed airspeed. Next\, I will use the model to analyse two manoeuvres – an Immelmann turn and a landing. We will see a novel flaring technique\, called steady state flare\, which minimizes the probability of flotation and bounce\, and maximizes the probability of a greased touchdown\, thus increasing safety as well as improving traveller experience. I will conclude the seminar with a discussion of my future research plans.\n\nSpeaker : Dr. Shayak Bhattacharjee\n\nBiography :\n\nDr. Shayak Bhattacharjee obtained his Integrated Master of Science in Physics from IIT Kanpur in 2015 and his PhD from the School of Mechanical and Aerospace Engineering\, Cornell University in 2021. Following a three-year postdoctoral stint at the University of Maryland at College Park\, he returned to India and is currently working for LogiXair\, an aerospace startup incubated at IIT Hyderabad. HIs current research interests are in flight dynamics of piloted airplanes and UAVs\, as well as in propeller analysis and design. He has also worked on dynamical systems of other kinds such as infectious diseases\, violin strings and magnetic levitation devices.
URL:https://aero.iisc.ac.in/event/normal-modes-and-manoeuvre-analysis-in-a-closed-form-aircraft-dynamic-model/
LOCATION:Auditorium (AE 005)\, Department of Aerospace Engineering
CATEGORIES:AE Seminar
ATTACH;FMTTYPE=image/jpeg:https://aero.iisc.ac.in/wp-content/uploads/2025/12/Shayak.jpg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Asia/Kolkata:20251204T120000
DTEND;TZID=Asia/Kolkata:20251204T130000
DTSTAMP:20260415T004141
CREATED:20251202T111559Z
LAST-MODIFIED:20251202T111559Z
UID:10000098-1764849600-1764853200@aero.iisc.ac.in
SUMMARY:Towards Collaborative Autonomy in Multi-robot Systems: From Swarm Defense to Human-Robot Collaboration
DESCRIPTION:Multi-robot systems can significantly expand our ability to operate in complex and hazardous environments\, from disaster response and environmental monitoring to national security. Achieving this requires robotic teams that are scalable\, resilient\, and capable of safe collaboration with each other and with humans. In this talk\, I will present my research toward advancing such autonomous multi-robot systems. I begin with my research work on adversarial swarm defense\, where I developed a unified framework that enables defender robots to protect safety-critical areas against both risk-averse and risk-taking adversarial swarms. This framework leverages real-time monitoring of adversarial swarm behavior\, optimal task assignment\, and trajectory planning for coordinated defense\, combining herding and collision-aware interception to collaboratively mitigate a wide range of adversarial behaviors.\nI then highlight my broader efforts to enable reliable autonomy in real-world settings\, including human-multi-robot collaboration\, motion planning for tethered robots in extreme terrains\, and automated ROS2-based integration testing pipelines for PX4 UAVs. Together\, these contributions reflect a cohesive and ongoing research direction toward building reliable multi-robot systems that operate safely\, effectively\, and collaboratively amid uncertainty and real-world constraints. \nSpeaker : Vishnu S. Chipade \nBiography: \nVishnu S. Chipade is a Senior Researcher at the Secure Systems Research Center\, Technology Innovation Institute\, Abu Dhabi. He received his PhD and Master’s degrees in Aerospace Engineering from the University of Michigan\, Ann Arbor\, USA and Bachelor’s degree in Aerospace Engineering from the Indian Institute of Technology Kanpur\, India. His research focuses on developing scalable and reliable multi-robot systems that operate safely\, securely\, and collaboratively with robots and humans in complex real-world environments\, leveraging the best of classical and AI-driven approaches to autonomy. His research has been published in top venues such as T-RO\, TCNS\, ICRA\, IROS\, CDC\, etc.
URL:https://aero.iisc.ac.in/event/towards-collaborative-autonomy-in-multi-robot-systems-from-swarm-defense-to-human-robot-collaboration/
LOCATION:Auditorium (AE 005)\, Department of Aerospace Engineering
CATEGORIES:AE Seminar
ATTACH;FMTTYPE=image/png:https://aero.iisc.ac.in/wp-content/uploads/2025/12/Vishnu.png
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Asia/Kolkata:20251128T110000
DTEND;TZID=Asia/Kolkata:20251128T130000
DTSTAMP:20260415T004141
CREATED:20251126T090534Z
LAST-MODIFIED:20251126T090534Z
UID:10000096-1764327600-1764334800@aero.iisc.ac.in
SUMMARY:From Flight Control to Multi-Agent Systems
DESCRIPTION:In this two-part talk\, I will present an overview of my research over the past ten years in the academia and the industry. In the first part\, I will talk about the use of articulated wings for rapid manoeuvring at high angles of attack\, particularly with application to landing in constrained spaces. I will present a first-principles analysis leading to design rules as well as guidelines for control design. In the second part\, I will talk about some recent work on the control of the emergent behaviour of large multi-agent systems. I will present motivating examples drawn from my recent research\, including in the industry. I will talk about the use of continuum methods for describing the dynamics of large systems and for designing compact control laws. I will wrap up by discussing interesting directions for future research on these topics. \nSpeaker : Aditya A. Paranjape \nBiography : \nAditya A. Paranjape received B.Tech and M.Tech in Aerospace Engineering from the Indian Institute of Technology (IIT) Bombay in 2007\, and PhD in Aerospace Engineering from the University of Illinois at Urbana-Champaign in 2011. After completing his post-doc in 2013 from the University of Illinois\, he held tenure-track academic positions\, most recently at Imperial College London\, before spending five years with TCS Research\, a division of Tata Consultancy Services\, in Pune\, India. He has been with the Department of Mechanical and Aerospace Engineering at Monash University since April 2024. He is also Honorary Lecturer at Imperial College London and Visiting Associate Professor at IIT Bombay. His research interests are centred around flight dynamics\, control systems\, and multi-agent systems. He is a Senior Member of the American Institute of Aeronautics and Astronautics and a member of AIAA’s Atmospheric Flight Mechanics Technical Committee.
URL:https://aero.iisc.ac.in/event/from-flight-control-to-multi-agent-systems/
LOCATION:Auditorium (AE 005)\, Department of Aerospace Engineering
CATEGORIES:AE Seminar
ATTACH;FMTTYPE=image/jpeg:https://aero.iisc.ac.in/wp-content/uploads/2025/11/aditya.jpg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Asia/Kolkata:20251121T103000
DTEND;TZID=Asia/Kolkata:20251121T130000
DTSTAMP:20260415T004141
CREATED:20251119T064621Z
LAST-MODIFIED:20251119T064621Z
UID:10000095-1763721000-1763730000@aero.iisc.ac.in
SUMMARY:Electrospinning Technology\, Applications and Advancements
DESCRIPTION:Electrospinning has emerged as one of the most versatile and impactful techniques for producing nanofibers in various applications\, including healthcare\, biotechnology\, filtration\, and advanced materials. This seminar offers a comprehensive overview of both the foundational science and the latest advancements that are shaping the future of the field. The talk will cover topics such as Fundamentals and principles of electrospinning; Materials\, polymers\, and process optimization; Advances in portable and clinical electrospinning systems; Electrospun materials for wound care & tissue regeneration; Applications in drug delivery\, filtration\, and protective materials; Case studies & commercialization pathways; Opportunities\, challenges\, and future trends. \nSpeaker : Dr. Claudia Barzilay \nBiography :\nDr. Claudia Barzilay is a leading scientist in electrospinning-based medical technologies and a key contributor to innovation at Nanomedic Technologies\, Israel — the company behind SpinCare™\, a revolutionary portable electrospinning system that creates personalized\, on-body wound dressings. She holds a PhD in biomaterials and nanotechnology\, where her research focused on advanced polymer systems and nanofiber-based solutions for clinical use. She later completed a prestigious post-doctoral fellowship at Stanford University\, specializing in translational biomaterials\, nanostructured polymers\, and medical technologies designed for real-world clinical impact. Dr. Barzilay’s work spans nanofiber engineering\, polymer science\, and medical device development. She collaborates closely with hospitals\, research institutions\, and industry partners worldwide\, contributing to the development of next-generation electrospinning platforms for wound healing\, regenerative medicine\, drug delivery\, and personalized healthcare applications.
URL:https://aero.iisc.ac.in/event/electrospinning-technology-applications-and-advancements/
LOCATION:Auditorium (AE 005)\, Department of Aerospace Engineering
CATEGORIES:AE Seminar
ATTACH;FMTTYPE=image/jpeg:https://aero.iisc.ac.in/wp-content/uploads/2025/11/Barzilay.jpg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Asia/Kolkata:20251110T160000
DTEND;TZID=Asia/Kolkata:20251110T170000
DTSTAMP:20260415T004141
CREATED:20251107T053302Z
LAST-MODIFIED:20251107T053440Z
UID:10000093-1762790400-1762794000@aero.iisc.ac.in
SUMMARY:From Shock to Shield: Designing Materials for Space\, Defense\, and Beyond
DESCRIPTION:The next frontier of materials innovation lies in designing systems that not only survive but thrive under harsh environments. From hypersonic vehicles and next-generation defense systems to lunar construction and in-space manufacturing\, the demand for ultra-lightweight\, high-strength\, and resilient materials has never been greater. Yet\, our ability to understand and design materials that endure such conditions remains limited by slow\, expensive testing and computationally intensive models ultimately leading to a lack of physical understanding of mechanical response. In particular\, data describing how materials deform and fail under ultra-high strain-rate loading conditions which are typical of aerospace and defense structures—are exceptionally scarce. As a result\, materials development has relied on costly\, well-established systems; but the emergence of commercial space and reusable aerospace structures now demands a new generation of high-fidelity insights into material behavior under dynamic extremes.\n\nIn this talk\, I will introduce a new data intensive high-throughput experimental framework for probing material behavior under extreme dynamic loading. At its core is an automated laser-driven micro-plate impact platform that enables rapid\, cost-effective measurement of key material properties under shock loading. For the purpose of this talk we will in particular look at the Hugoniot Elastic Limit (the onset of plasticity under uniaxial strain loading) and spall strength (the threshold for dynamic fracture) of metals\, when subjected to ultra-high strain rate impacts (10^6 to  10^7 /s). Traditionally\, these properties required large-scale\, single-shot experiments; this new approach achieves them with statistical richness and precision\, dramatically accelerating the rate of materials discovery for extreme environments. Using this dataset\, I will discuss how loading kinetics\, microstructure\, and composition govern material performance\, and how transforming a data-scarce field into a data-rich one enables AI-driven approaches such as active learning and Bayesian optimization for autonomous extreme-mechanics experimentation.\n\nLooking ahead\, integrating this data-rich experimental capability with AI-driven modeling and automation opens a pathway toward physics-informed design principles for lightweight alloys\, ceramics\, and architected composites. In the near term\, this framework will shorten material certification cycles for hypersonics and spacecraft\, rapidly and cheaply explore a wide range of potential materials solutions; in the long term\, it will enable data-driven design of resilient materials for aerospace\, defense\, energy applications and beyond. By uniting experimental mechanics\, data science\, and materials design\, this work lays the foundation for a new era of adaptive\, high-performance materials engineered for extremes.\n\nSpeaker : Dr. Piyush Wanchoo\n\n\nBiography:\nDr. Piyush Wanchoo is a Postdoctoral Fellow at Johns Hopkins University’s Hopkins Extreme Materials Institute (HEMI). His research focuses on understanding how materials behave under extreme conditions such as shock\, impact\, and blast loading. He develops high-\nthroughput\, AI-integrated experimental platforms that enable rapid\, data-driven discovery of material solutions for aerospace\, defense\, and space applications.
URL:https://aero.iisc.ac.in/event/from-shock-to-shield-designing-materials-for-space-defense-and-beyond/
LOCATION:Online
CATEGORIES:AE Seminar
ATTACH;FMTTYPE=image/jpeg:https://aero.iisc.ac.in/wp-content/uploads/2025/11/Piyush.jpg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Asia/Kolkata:20251027T110000
DTEND;TZID=Asia/Kolkata:20251027T130000
DTSTAMP:20260415T004141
CREATED:20251015T064811Z
LAST-MODIFIED:20251015T064811Z
UID:10000088-1761562800-1761570000@aero.iisc.ac.in
SUMMARY:Taming Waves through Non-Hermiticity: From Invisible Tunneling to Unidirectional Nonlinear Pulses
DESCRIPTION:Non-Hermitian wave dynamics challenge our conventional understanding of wave propagation\, revealing transport behaviors inaccessible in Hermitian systems. In this seminar\, I will present a few intriguing phenomena arising from these dynamics. In the first part\, I will show a counterintuitive tunneling effect at the interface of a non-Hermitian system sandwiched between two Hermitian ones. Here\, the non-Hermitian skin effect creates barriers at the boundaries\, yet under the right conditions\, a wave can tunnel through as if the interface were invisible. This phenomenon is explored in both quantum and classical regimes\, with experimental demonstrations using an active electric circuit platform. In the second part\, I turn focus to nonlinear systems\, addressing generation of unidirectional\, narrow pulses (solitons) that propagate without distortion in active mechanical setups. I present a theoretical model for generating stable unidirectional solitons by carefully balancing nonlinearity and nonreciprocity\, and show how these pulses are realized experimentally\, supported by analytical results and numerical simulations. \nReferences: \nInvisible tunneling through non-Hermitian barriers in nonreciprocal lattices. Sayan Jana\, Lea Sirota\, Physical Review B (Letter) 111 (10)\, L100301\, (2025).\nHarnessing Nonlinearity to Tame Wave Dynamics in Nonreciprocal Active Systems\, Sayan Jana et al.\, arXiv:2502.16216 (2025). \n  \nSpeaker :  Dr. Sayan Jana \nBiography:  \nDr. Sayan Jana is a Postdoctoral Researcher at the Department of Mechanical Engineering\, Tel Aviv University\, Israel. He obtained his PhD in Theoretical Condensed Matter Physics from the Institute of Physics\, Bhubaneswar\, India\, in 2022. His research is interdisciplinary\, integrating theoretical physics and engineering to emulate complex analogue quantum and high-energy phenomena using lab-scale platforms. One key finding includes the proposal and simulation of analogue gravitational lensing and Hawking radiation using mechanical networks. These studies provide accessible routes to investigate phenomena that are otherwise difficult to observe directly in the universe. Another major research direction focuses on non-Hermitian systems\, where non-conservation of energy gives rise to intriguing dynamics and interplay with topology and nonlinearity. Realizations in active metamaterials reveal novel wave phenomena and control mechanisms\, with significant potential for advanced wave manipulation and energy technologies.
URL:https://aero.iisc.ac.in/event/taming-waves-through-non-hermiticity-from-invisible-tunneling-to-unidirectional-nonlinear-pulses/
LOCATION:STC Seminar Hall\, Dept. of Aerospace Engineering
CATEGORIES:AE Seminar
ATTACH;FMTTYPE=image/jpeg:https://aero.iisc.ac.in/wp-content/uploads/2025/10/Sayan.jpg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Asia/Kolkata:20251027T103000
DTEND;TZID=Asia/Kolkata:20251027T130000
DTSTAMP:20260415T004141
CREATED:20251024T100127Z
LAST-MODIFIED:20251024T100127Z
UID:10000092-1761561000-1761570000@aero.iisc.ac.in
SUMMARY:Advanced Fiber Laser Technologies and Applications from VPG Laserone: Integrating Industrial\, Medical\, and Scientific Innovations
DESCRIPTION:VPG Laserone\, a successor of IRE-Polus Ltd founded in 1991 by physicist Valentin P. Gapontsev\, represents over three decades of scientific leadership in high-power fiber laser technology. The company has established a vertically integrated manufacturing ecosystem in Russia—localizing 85 % of component production and dedicating 25 % of its investments to R&D—to design\, develop\, and industrialize advanced photonic systems for industrial\, medical\, and telecommunication applications. Its current portfolio spans continuous-wave\, quasi-continuous-wave\, nanosecond\, and picosecond fiber lasers\, with output powers reaching 60 kW and pulse energies exceeding 60 J. These sources power a range of industrial laser systems—including orbital pipe-welding (TongWELD)\, hydro-laser cutting (FL-HYDRO)\, laser cladding and hardening platforms (FL-CPM)\, robotic laser processing (LightBOT)\, and precision micro-machining systems (FL-MICRO). The company’s fiber-based laser cleaning and welding systems (LiteWELD\, LightCLEAN) demonstrate high beam quality\, energy efficiency > 40 %\, and operational reliability under continuous-duty cycles.\nBeyond manufacturing\, VPG Laserone extends photonics into biomedical and telecommunication domains. Its FiberLase CR and Urolase series of thulium-fiber medical lasers support clinical applications in tissue regeneration\, urology\, and surgery\, under ISO 13485:2016 certification. In telecom\, the HORIZON DWDM platform and KONUS optical transport systems enable ultra-long-reach optical communication networks with flexible topology and OTN switching.\nContinuous innovation in laser physics\, materials science\, and precision engineering underpins VPG Laserone’s mission to “fill reality with innovations.” By combining fundamental research with scalable industrialization\, the company aims to become a global benchmark in laser-based manufacturing and photonic integration by 2030—advancing scientific discovery and enabling transformative industrial applications across multiple sectors. \n  \nSpeaker :  Artur Andreev \, First Deputy CEO \, VPG Laserone LLC (formerly IRE-Polus Ltd)\nFryazino\, Moscow Region\, Russia
URL:https://aero.iisc.ac.in/event/advanced-fiber-laser-technologies-and-applications-from-vpg-laserone-integrating-industrial-medical-and-scientific-innovations/
LOCATION:Auditorium (AE 005)\, Department of Aerospace Engineering
CATEGORIES:AE Seminar
ATTACH;FMTTYPE=image/jpeg:https://aero.iisc.ac.in/wp-content/uploads/2025/10/Artur-.jpg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Asia/Kolkata:20251022T160000
DTEND;TZID=Asia/Kolkata:20251022T170000
DTSTAMP:20260415T004141
CREATED:20251021T054808Z
LAST-MODIFIED:20251021T054808Z
UID:10000090-1761148800-1761152400@aero.iisc.ac.in
SUMMARY:Experimental Studies and Control of Subsonic & Supersonic Flows Strategic Opportunities for Collaboration with Florida State University
DESCRIPTION:This talk will consist of parts: The first provides an overview of some interesting and challenging problems that have been studied over the past three decades by my research group. These studies span subsonic and supersonic flows and often involve developing or applying advanced diagnostics in difficult environments allowing us to peer into complex\, feature-rich flows and offering significant insight into the governing physics. I will highlight a few\, representative\, complex flows. The first problem involves subsonic flow around a cylinder with a slanted base—a canonical bluff body geometry analogous to an aircraft fuselage that is often dominated by strong unsteady-meandering vortices. The second consists of supersonic single and dual impinging jets – canonical models of flows that occur in VTOL/STOVL aircraft during hover. They often produce highly unsteady aeroacoustics that are resonance driven resulting in extremely high noise levels\, fatigue of structures and other issues. The third example is the three-dimensional flow field due to single and dual-fin generated swept shock wave/boundary layer interaction (SBLI). Such interactions are ubiquitous in supersonic-hypersonic air vehicles where they can impact internal and external aerodynamics. If time permits\, examples of implementing active flow control (AFC) for some of these problems will also be examined.\nThe research discussed herein is a very limited subset of the broad array of advanced research being conducted at Florida State University (FSU) by its faculty and students\, using many unique and cutting-edge facilities. An introduction to some of FSU’s core research strengths and capabilities is the focus of the second part of the talk. In addition to the STEM-focused fields\, FSU’s has many other areas of significant and emerging strength such as Health\, Business\, Entrepreneurship and Innovation-driven translation. As a result\, I hope to catalyze a dialogue between our institutions to identify a framework and paths for mutually beneficial partnerships. Such partnerships may include\, but are not limited to\, faculty exchanges\, joint research proposals and projects\, and student exchanges and residencies abroad\, with the goal of amplifying global exchange of ideas\, accelerating discovery and enhancing national and international impact. \nSpeaker: Farrukh Alvi \n  \nBiography :  \nFarrukh Alvi is the Don Fuqua Eminent Scholar and Professor of Mechanical & Aerospace Engineering. He also serves as the Senior Associate Provost for Strategic Initiatives and Innovation at Florida State University\, where he helps drive major institutional projects and partnerships. Over the past two years in this role\, Farrukh has led strategic initiatives from the Provost’s Office that have strengthened FSU’s global engagement\, advanced institutional innovation\, and expanded collaborative research opportunities across disciplines. He recently completed an IPA assignment as the Director for Institutional Research Capacity and Strategic Growth at the Basic Research Office under the Office of Undersecretary of Defense (Research & Engineering). Previously\, Farrukh served as the Senior Associate Dean for Research & Graduate Studies at the FAMU- FSU College of Engineering for nearly 6 years including as the Interim Dean in 2022.  In 2023\, he co-led Florida State University’s development and funding of a landmark $160M+ proposal for the Institute for Strategic Partnerships\, Innovation\, Research\, and Education (InSPIRE)\, ultimately serving as its founding Executive Director. He also leads\, as principal investigator\, a multi-institutional NSF Engines proposal to create the Florida Advanced Manufacturing Engine (FLAME)\, which was selected as a semifinalist. His efforts overseeing InSPIRE and FLAME have catalyzed new models for institutional collaboration and innovation. He is the founding director of the Florida Center for Advanced Aero-propulsion (FCAAP)\, a multi-university\, state-wide research\, training and education center he helped establish in 2008. Farrukh received his B.S. in Nuclear Engineering from UC Berkeley and his PhD in Mechanical Engineering from Penn State University. His research focuses on fundamental phenomenon\, primarily in compressible flows; active flow and noise control\, including the development and use of micro-fluidic actuators; and the development and use of advanced diagnostics. He holds numerous patents in his areas of research. His research has been funded by numerous US government entities(NSF\, AFOSR\, ONR\, DARPA\, ARO) and industry. He has mentored more than 60 PhD and MS students\, post-doctoral researchers and scientists. He is a Fellow of the Royal Aeronautical Society\, Fellow of ASME\, an Associate Fellow of AIAA and has served as an Associate Editor of the AIAA Journal.
URL:https://aero.iisc.ac.in/event/experimental-studies-and-control-of-subsonic-supersonic-flows-strategic-opportunities-for-collaboration-with-florida-state-university/
LOCATION:Auditorium (AE 005)\, Department of Aerospace Engineering
CATEGORIES:AE Seminar
ATTACH;FMTTYPE=image/jpeg:https://aero.iisc.ac.in/wp-content/uploads/2025/10/Farrukh.jpg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Asia/Kolkata:20251016T150000
DTEND;TZID=Asia/Kolkata:20251016T170000
DTSTAMP:20260415T004141
CREATED:20251016T033002Z
LAST-MODIFIED:20251016T053705Z
UID:10000089-1760626800-1760634000@aero.iisc.ac.in
SUMMARY:Analysis and Design of Highly Flexible Morphing Structures
DESCRIPTION:Advancements in the aviation sector have consistently aimed to maximize efficiency through a multi-disciplinary approach\, focusing on optimizing both structural and aerodynamic performance. Although modern aerospace structures are engineering marvels\, they often lack or limit the flexibility observed in nature—such as the flexible\, flapping wings of birds. This contrast underscores a significant opportunity to enhance structural performance without compromising safety. A paradigm shift towards more flexible or morphing structures could open up a new realm of lightweight\, adaptive solutions. Rather than resisting sudden\, extreme loads\, flexible structures adapt by deforming and altering their stiffness characteristics\, thereby maintaining safety. Multistable composite laminates are promising candidates for morphing applications\, owing to their ability to switch between multiple stable states. By applying external energy\, these structures can transition\, or “snap through\,” from one stable shape to another\, a phenomenon extensively explored in aerospace research.\nTo advance this field\, this study proposes the computational analysis and design of small-scale morphing structures. The study introduces a novel morphing component based on multistable fiber-reinforced composites\, generated through thermally induced residual stresses. Surface-bonded piezoelectric composite actuators are employed to trigger the snap-through. The study presents refined semi-analytical and finite element techniques\, and the findings are validated by manufacturing and testing small-scale morphing elements. Results demonstrate that\, compared to conventional morphing structures\, the proposed design can reduce energy consumption significantly (more than 60% for the presented design). Looking ahead\, the focus has to shift toward extending these concepts for real applications\, with the goal of preventing failures while enabling large deformations under extreme loading conditions. Achieving this balance demands a novel approach\, integrating state-of-the-art computational and manufacturing technologies. Future efforts will aim to explore the structural design space of flexible stiffness switching structures (S³)\, unlocking the full potential of adaptive\, intelligent\, next-generation systems of the future.\n\n\nSpeaker : Dr. Anilkumar P. M.\n\nBiography\n\nDr. Anilkumar P. M. is a research group leader (postdoctoral researcher) in composite structures at the Institute of Structural Analysis\, Leibniz University Hannover\, Germany (since April 2023). He completed his PhD at IIT Madras (January 2023) in morphing structures\, supported by the PMRF and the DAAD binational PhD program with collaboration in Hannover\, along with exchange visits to the Bernal Composite Group\, University of Limerick. He holds an M.Tech. from IIT Madras and a B.Tech. from NIT Calicut. He has published extensively in morphing structures\, stability of composite structures\, and related areas. His research interests include composite materials and structures\, smart morphing structures\, and buckling/postbuckling analysis.
URL:https://aero.iisc.ac.in/event/analysis-and-design-of-highly-flexible-morphing-structures/
LOCATION:Auditorium (AE 005)\, Department of Aerospace Engineering
CATEGORIES:AE Seminar
ATTACH;FMTTYPE=image/jpeg:https://aero.iisc.ac.in/wp-content/uploads/2025/10/Anilkumar.jpg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Asia/Kolkata:20251006T150000
DTEND;TZID=Asia/Kolkata:20251006T170000
DTSTAMP:20260415T004141
CREATED:20251006T063850Z
LAST-MODIFIED:20251006T063850Z
UID:10000087-1759762800-1759770000@aero.iisc.ac.in
SUMMARY:Recent advancements in Machine Learning approaches for solid body mechanics
DESCRIPTION:Machine learning methods have attracted growing interest across many fields\, including solid mechanics. Constitutive artificial neural networks (CANNs) have shown high efficiency and accuracy for modeling hyperelastic materials\, while physics-informed neural networks (PINNs) provide a data-free alternative to conventional simulation techniques. However\, standard PINNs often require large\, complex networks and dense sampling in the simulation domain to achieve stable and accurate results. This presentation gives an overview of several current NN-based approaches for both constitutive modeling and simulation. It introduces extended ML-based constitutive models for cyclic plasticity\, concrete damage plasticity\, and magneto-active polymers. These approaches enable simplified and accelerated material characterization while maintaining high accuracy. An integrated framework for simulation and material characterization is also proposed. As an example\, a coupled CANN–DEM approach is presented: the material behavior is first learned from a limited set of complex experiments\, and the resulting model is then used to simulate new loading scenarios with promising accuracy and robustness. In addition\, the quadrature-based Deep Energy Method (Q-DEM) is discussed\, offering significant improvements in accuracy and stability. Finally\, oscillatory PINNs (oPINNs) are introduced for combined transient and modal analysis. By circumventing Dahlquist’s barriers\, oPINNs achieve substantial stability gains compared to traditional time-stepping schemes. \nSpeaker : Stefan Hildebrand \nBiography: \nStefan Hildebrand is a doctoral researcher at the Department of Structural and Computational Mechanics at Technische Universität Berlin. His work focuses on combining data-driven and physics-informed methods in solid mechanics\, with applications ranging from automated material characterization to digital twins. After studying Computational Engineering Sciences and working as a software engineer for the automotive multibody simulation software SIMDRIVE3D at CONTECS engineering services GmbH\, he has held guest research positions at IIT Bombay and Georgia Tech\, and received recognitions including a Junior-Fellowship by German Informatics Society and Forbes 30 Under 30.\n—
URL:https://aero.iisc.ac.in/event/recent-advancements-in-machine-learning-approaches-for-solid-body-mechanics/
CATEGORIES:AE Seminar
ATTACH;FMTTYPE=image/jpeg:https://aero.iisc.ac.in/wp-content/uploads/2025/10/Stefan.jpg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Asia/Kolkata:20250821T120000
DTEND;TZID=Asia/Kolkata:20250821T130000
DTSTAMP:20260415T004141
CREATED:20250819T054916Z
LAST-MODIFIED:20250820T112000Z
UID:10000086-1755777600-1755781200@aero.iisc.ac.in
SUMMARY:Development of Control Law for MALE UAV with Autonomous Take-off and Landing
DESCRIPTION:This seminar presents a systematic methodology for the design of flight control laws for Medium Altitude Long Endurance (MALE) UAV operating at high altitudes\, including the development of control law for fully autonomous take-off and landing operations. The process begins by developing a detailed model of the aircraft\, incorporating parameters such as mass\, inertia\, aerodynamic characteristics\, centre of gravity variation\, and propulsion data. These models are employed for both linear and nonlinear analyses\, including trim calculations across\nthe entire flight envelope up to 30\,000 ft. They also account for endurance at moderate altitudes exceeding 20 hours\, incorporating engine performance degradation above 23\,000 ft. To ensure practical performance\, the model includes a lumped delay\, actuator dynamics\, and sensor model. Control laws are then designed around central and extreme trim conditions\, following military-grade stability margins. The control law design involves the adaptation of classical proportional derivative and integral (PID) control and the proposal of decoupled incremental nonlinear dynamic inversion (DINDI) as a modern alternative. The control law is tested through various simulation stages. These include model-in-the-loop (MIL) testing and Monte Carlo simulations with disturbances like turbulence and wind gusts. Once verified\, the controller is tested as hardware in a hardware-in-the-loop simulation\, followed by flight trials. This workflow ensures the resulting control laws are both reliable and adaptable\, making them suitable for modern UAV missions in dynamic\, real conditions. In the future\, the control system undergoes flight envelope expansion\n\n\nSpeaker: Dr. Salahudden\, Dept. of Aerospace Engineering\, Punjab Engineering College\, Chandigarh\n\nBiography:\nDr. Salahudden is currently working as an Assistant Professor at the Department of Aerospace Engineering (AE) at Punjab Engineering College\, Chandigarh\, India. Prior to this\, he was the Deputy Manager in Flight Controls Department at TATA Aerospace and Defence. Before that\, he worked as a Postdoctoral Fellow at Auburn University in the AE Department\, United States.\nHe earned a Ph.D. in AE from the Indian Institute of Technology Kanpur (IITK)\, India\, in 2022. He received a M.Tech in AE from IIT Kanpur in 2018 and a B.Tech in AE from SRM University Chennai\, India in 2016. His research interests include the areas of flight mechanics\, high angle of attack aircraft dynamics\, aircraft design\, control law design for flight vehicles and autopilot\ndesign. He published numerous reputable journals and conferences based on his research. He is also serving as a reviewer for several reputed journals. He has received many academic and\nresearch awards (Outstanding PhD Thesis Award\, Excellent Undergraduate Project Award\,\nOutstanding Academic Performance Award\, to name a few)
URL:https://aero.iisc.ac.in/event/development-of-control-law-for-male-uav-with-autonomous-take-off-and-landing/
LOCATION:Auditorium (AE 005)\, Department of Aerospace Engineering
CATEGORIES:AE Seminar
ATTACH;FMTTYPE=image/jpeg:https://aero.iisc.ac.in/wp-content/uploads/2025/08/Sahahudden-1.jpg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Asia/Kolkata:20250716T110000
DTEND;TZID=Asia/Kolkata:20250716T130000
DTSTAMP:20260415T004141
CREATED:20250715T041029Z
LAST-MODIFIED:20250715T041029Z
UID:10000083-1752663600-1752670800@aero.iisc.ac.in
SUMMARY:Investigation of flow instabilities in high-speed impinging jets using dual-time velocity measurements
DESCRIPTION:Motivated by applications in the aerospace propulsion industry as well as other energy systems\, the fundamental study of phase-locked shear-layer instabilities in high-speed impinging jets\, has been of research interest for a long time.  The study of instabilities is usually conducted with time derivatives of velocity field. However\, time-resolved experimental data acquisition using particle image velocimetry (PIV) techniques has its challenges for high-speed flows due to the requirements of high spatial and temporal resolution. In this talk\, I will introduce an alternate approach of utilizing time-unresolved dual-time PIV measurements for investigation of the flow instabilities in supersonic impinging jets and illustrate the valuable information about the flow dynamics that can be extracted using the same. \nSpeaker : Dr. Tushar Sikroria \nBiography: \nTushar Sikroria obtained his B.Tech.-M.Tech. Dual Degree in Aerospace Engineering from IIT Kanpur\, Uttar Pradesh\, India\, in 2013. Then he worked for more than two years in John F. Welch Technology Centre\, General Electric (GE)\, Bangalore\, India. Thereafter\, he carried out research work as a Project Engineer in Propulsion Laboratory\, IIT Kanpur\, in 2016\, and later went to pursue his doctoral study from the University of Melbourne\, Australia. He was awarded PhD in Mechanical Engineering from the University of Melbourne\, in December 2021. He pursued post-doctoral research in the Turbomachinery & Propulsion Department\, von Karman Institute\, Belgium and then joined IIT Kanpur as an Assistant Professor in the Department of Mechanical Engineering in January 2024.
URL:https://aero.iisc.ac.in/event/investigation-of-flow-instabilities-in-high-speed-impinging-jets-using-dual-time-velocity-measurements/
LOCATION:STC Seminar Hall\, Dept. of Aerospace Engineering
CATEGORIES:AE Seminar
ATTACH;FMTTYPE=image/jpeg:https://aero.iisc.ac.in/wp-content/uploads/2025/07/Tushar.jpg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Asia/Kolkata:20250630T160000
DTEND;TZID=Asia/Kolkata:20250630T170000
DTSTAMP:20260415T004141
CREATED:20250630T060101Z
LAST-MODIFIED:20250630T060101Z
UID:10000081-1751299200-1751302800@aero.iisc.ac.in
SUMMARY:Nature of Phase Kinetics and Memory in Shape Memory Alloys
DESCRIPTION:Shape Memory phenomenon in some intermetallics like NiTi is well known. However\, during arbitrary thermomechanical loading\, these materials exhibit several other interesting\, yet less-understood phenomena. In this talk\, Thermal Arrest Memory and associated effects during interrupted phase transformations in shape memory alloys are discussed and some fascinating underpinnings in the associated martensitic transformations are highlighted.\nThe research talk will be followed by a presentation by the speaker about potential Research and Teaching initiatives and future directions toward collaborative activities at the department. This will include a brief overview of the R&D experience of the speaker over 3 decades\, and a strategy to pursue Research and Development of allied Aerospace technologies and engage with relevant organizations. A brief overview of proposed elective courses like Advanced Aerospace Materials\, and Life-Cycle Analysis and Design of Aerospace systems and components is provided. These are aimed at enhancing the academic level of the students of the department and making them more contemporary. \nSpeaker : Dr. Vidyashankar Buravalla \nBiography :  \nDr. Vidyashankar Buravalla obtained his Ph.D in Aerospace Engineering from IISc in 1998. He has worked in National\, International\, and Multinational R&D entities over the last 3 decades. His areas of expertise include Smart materials and systems\, composite materials and structures\, continuum mechanics\, thermodynamics\, fracture mechanics\, vibration and damping\, NDE and turbomachinery.  He recently superannuated as a Principal Engineer from GE Global Research Center in Bangalore where he worked for nearly 13 years. Prior to that\, he worked in GM R&D for nearly 10 years\, in ADA for 3 years\, and in Rolls-Royce Technology Center in Sheffield UK for 3 years as a Research Fellow. He has 24 Journal and 13 Conference publications and more than 35 technical internal reports. He has 15 patents awarded and more than 30 patent applications under review/processing. He has received several awards in his R&D career and also served as an Adjunct Faculty at IIT-Kanpur between 2008 and 2012. He is associated with several professional bodies and recently served as Hon. President of the Institute of Smart Structures and Systems (ISSS).
URL:https://aero.iisc.ac.in/event/nature-of-phase-kinetics-and-memory-in-shape-memory-alloys/
LOCATION:Auditorium (AE 005)\, Department of Aerospace Engineering
CATEGORIES:AE Seminar
ATTACH;FMTTYPE=image/jpeg:https://aero.iisc.ac.in/wp-content/uploads/2025/06/Vidyashankar.jpg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Asia/Kolkata:20250603T113000
DTEND;TZID=Asia/Kolkata:20250603T130000
DTSTAMP:20260415T004141
CREATED:20250527T091724Z
LAST-MODIFIED:20250527T091724Z
UID:10000077-1748950200-1748955600@aero.iisc.ac.in
SUMMARY:Space Domain Awareness in the Artemis Era
DESCRIPTION:Since the Apollo era\, space has become an increasingly valuable domain for national security due to diplomatic\, informational\, and economic reasons. The last few years have seen exponential growth in the launch of space objects and there is an increased interest in having a permanent cislunar presence through the Artemis program. The understanding of motion of a spacecraft in multi-body environment is essential to transit between different regions in the cislunar space and to forecast and track objects in the cislunar space. The perturbed two-body restrictive framework has led to extensive modeling\, analysis\, and analytical solutions to study spacecraft motion in orbits around the Earth. However\, beyond GEO (XGEO) the dynamical environment shifts\, and the structure of fundamental behaviors can be radically different. The primary challenge that limits the transferability of tools and techniques from the GEO to XGEO region is non-Keplerian dynamics\, data sparsity from limited coverage and availability of sensors. The process of orbit determination and forecasting the path for an object based on short time arc observations is not trivial. This talk will introduce novel tools to track spacecraft motion in cislunar space and transfers between different regions in cislunar space. These tools make use of dynamical system theory in combination with advances in optimal control theory to provide a better understanding of transport mechanisms in cislunar space. Local orbit elements will be discussed to characterize the trajectories in the cislunar space.\n\nSpeaker : Dr. Puneet Singla\n\nBiography:\n\nDr. Puneet Singla is a Harry and Arlene Schell Professor of the Aerospace engineering at the Pennsylvania State University (PSU). Dr. Singla’s research focus pertains to uncertainty propagation through nonlinear systems\, data driven modelling and control of autonomous systems. His research related honours include the IEEE AESS’s Judith A. Resnik Award\, NSF CAREER award\, the AFOSR Young Investigator award\, the University at Buffalo’s “Exceptional Scholar” Young Investigator Award and the Texas A&M University’s Young Aerospace Engineering Distinguished Alumni Award in recognition of his scholarly activities. He is a fellow of American Astronautical Society (AAS) and an associate fellow of American Institute of Aeronautics and Astronautics (AIAA).
URL:https://aero.iisc.ac.in/event/space-domain-awareness-in-the-artemis-era/
LOCATION:STC Seminar Hall\, Dept. of Aerospace Engineering
CATEGORIES:AE Seminar
ATTACH;FMTTYPE=image/jpeg:https://aero.iisc.ac.in/wp-content/uploads/2025/05/Puneet-.jpg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Asia/Kolkata:20250520T103000
DTEND;TZID=Asia/Kolkata:20250520T120000
DTSTAMP:20260415T004141
CREATED:20250515T052853Z
LAST-MODIFIED:20250515T052853Z
UID:10000074-1747737000-1747742400@aero.iisc.ac.in
SUMMARY:Nonlinear saturation of Mack modes in a hypersonic boundary layer
DESCRIPTION:Some decades ago J. T. Stuart formulated a theory for nonlinear saturation of hydrodynamically unstable modes. He proposed that an unstable mode\, upon gaining sufficient energy\, distorts the mean flow. This mean flow distortion reduces the shear\, thus reducing the inviscid energy production mechanism which eventually results in a saturation of instability. In a hypersonic boundary layer\, Mack modes\, which have an acoustic as well as a vortical structure\, saturate with a different mechanism. In this talk I will present the Mack mode instability saturation mechanism using parallel flow DNS and models. I will also give a brief overview of the other ongoing research activity in my group at IIT Delhi. \n  \nSpeaker: Dr. Prateek Gupta \n  \nBiography : \nDr. Gupta is an Assistant Professor at the Department of Applied Mechanics\, IIT Delhi. He completed his BTech in Mechanical Engineering from IIT Delhi in 2015 and PhD in Mechanical Engineering at Purdue University in 2019. He performed theoretical and numerical investigations of nonlinearities in thermoacoustic systems for this PhD thesis. He later joined the Mechanical and Process Engineering Department at ETH Zurich as a Postdoctoral Fellow\, where he worked on theoretical and computational modeling of non-equilibrium thermodynamics in crystalline materials. He joined the faculty of his alma mater in 2021. Dr. Gupta’s broad research interests span fundamentals and applications of fluid mechanics\, statistical mechanics\, and thermodynamics. \n 
URL:https://aero.iisc.ac.in/event/nonlinear-saturation-of-mack-modes-in-a-hypersonic-boundary-layer/
LOCATION:Auditorium (AE 005)\, Department of Aerospace Engineering
CATEGORIES:AE Seminar
ATTACH;FMTTYPE=image/jpeg:https://aero.iisc.ac.in/wp-content/uploads/2025/05/AE-Seminar.jpg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Asia/Kolkata:20250429T170000
DTEND;TZID=Asia/Kolkata:20250429T183000
DTSTAMP:20260415T004141
CREATED:20250424T044437Z
LAST-MODIFIED:20250424T044437Z
UID:10000072-1745946000-1745951400@aero.iisc.ac.in
SUMMARY:Eulerian-Lagrangian Modeling of Flash-boiling Injection Processes in Internal Combustion Engines
DESCRIPTION:Reducing greenhouse gas emissions from the transportation sector\, especially carbon dioxide\, is one of the main global challenges to achieve a more sustainable future. Developing internal combustion engines with advanced injection and combustion concepts that improve efficiency and decrease pollutant emissions are essential steps towards reducing their environmental impact. Over the past decades\, flash-boiling injection has become a promising alternative to generate a much finer spray compared to high-pressure injection. The rapid phase-change phenomenon during flash-boiling injection occurs due to the superheating of the liquid fuel upon entering the combustion chamber\, resulting in tiny droplets due to the abrupt disintegration of the liquid jet\, which in turn enhances the mixture homogeneity between air and fuel by increasing the vaporization rate\, widening the spray plume due to the increased radial expansion via bubble growth\, and reducing the droplet velocities\, thus leading to shorter penetrations. A detailed understanding of the underlying mechanisms of the flash-boiling process\, such as nucleation of vapor bubbles\, bubble growth\, and finally jet burst\, at a microscopic droplet level is necessary to accurately quantify its effect on the macroscopic spray structure. In this talk\, I will first discuss the modeling of single-droplet flash-boiling behavior using a Lagrangian particle tracking (LPT) technique. Following this\, a novel reduced-order Lagrangian model will be introduced to accurately capture the vapor bubble growth in superheated microdroplets\, accounting for interaction among multiple bubbles. Next\, a simplified nondimensional semi-analytical solution for bubble growth\, based on dimensional analysis of the modified Rayleigh-Plesset equation\, will be presented. This solution offers accurate predictions of bubble growth considering bubble interactions using larger time step sizes\, making it effective for simulating large-scale superheated sprays with numerous droplets under varied conditions. Finally\, a three-dimensional two-way coupled large-eddy simulation of superheated spray case will be discussed\, incorporating the newly developed bubble growth model within the LPT framework. \nSpeaker : Dr. Avijit Saha \nBiography: \nDr.-Ing. Avijit Saha is a postdoctoral researcher at the Center for Aeromechanics Research\, Department of Aerospace Engineering and Engineering Mechanics\, The University of Texas at Austin\, USA. His current research primarily focuses on terahertz time-domain spectroscopy (THz-TDS) for the characterization of plasma properties\, including electron density and collision frequency. In addition to his experimental work\, he is developing a novel Bayesian framework for quantifying uncertainties in measurement data\, with the goal of enhancing the reliability and interpretability of spectroscopic diagnostics. He obtained his Ph.D. in Mechanical Engineering from RWTH Aachen University in September 2023\, making him the youngest individual to receive the doctorate degree from ITV. His dissertation focused on the physics based reduced-order modeling of flash-boiling injection processes in internal combustion engines. Prior to this\, he completed his B.Tech. (Hons.) and M.Tech. in Aerospace Engineering from IIT Kharagpur. He was the first recipient of the distinguished ASME IGTI Student Scholarship in the Aerospace department. His research interests span experimental fluid dynamics\, optical diagnostics\, multiphase flow modeling (DNS\, LES\, reduced-order models)\, combustion instabilities\, high-performance computing\, and their applications in aerospace propulsion systems. He has authored numerous publications in leading international journals and conferences\, earning recognition through several prestigious awards. Among his accolades are the Jang Young Sil Post-doctoral Research Fellowship from Korea Advanced Institute of Science & Technology (KAIST) in 2024\, Post-doctoral fellowship from MIT in 2025\, and his role as Principal Investigator for a high-impact compute-time research project under National High-Performance Computing Center for Computational Engineering Science (NHR4CES)\, Germany. Dr. Saha also serves as a reviewer for several notable journals like Nuclear Technology\, Physics of Fluids\, Proceedings of Combustion Institute\, Atomization and Sprays\, and SAE International Journals.
URL:https://aero.iisc.ac.in/event/eulerian-lagrangian-modeling-of-flash-boiling-injection-processes-in-internal-combustion-engines/
LOCATION:Online
CATEGORIES:AE Seminar
ATTACH;FMTTYPE=image/jpeg:https://aero.iisc.ac.in/wp-content/uploads/2025/04/Avijit-.jpg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Asia/Kolkata:20250416T153000
DTEND;TZID=Asia/Kolkata:20250416T170000
DTSTAMP:20260415T004141
CREATED:20250416T051419Z
LAST-MODIFIED:20250416T051419Z
UID:10000070-1744817400-1744822800@aero.iisc.ac.in
SUMMARY:Miniaturised technologies for potential applications in space research
DESCRIPTION:Miniaturised technologies\, due to their portability\, rapid responses\, low powers and ability of multi-component integration\, have received an ever-growing interest in areas like healthcare\, air quality\, and space research. This talk will provide an overview of my research in 3 domains of miniaturised technologies: a) microfluidics\, b) MEMS sensors and c) nanoaerosol instruments. I will also highlight areas of space research where this work is potentially relevant. \nI will begin my talk with my work in microfluidic particle enrichment and gene therapy devices. Enrichment devices\, when integrated with a downstream sensor for target particle detection\, can significantly improve the sensor sensitivity. I will cover my work in developing enrichment devices and mitigation of some undesirable effects that can limit their reliability. I will also introduce my work in commercial-scale microfluidic mixers for gene therapy. The work in this theme is highly relevant to healthcare in manned space missions and CubeSats to understand in-space behaviour of bio-species. \nI will next cover my work in thin film MEMS mass sensors\, which offer several advantages over conventional sensors like QCMs thanks to their portability\, high sensitivities and excellent compatibility with semiconductor technology. This talk will cover my work towards enhancing their capabilities in areas of biosensing and simultaneous detection of multiple parameters. This work has a promising applicability in controlling ambient conditions inside spacecrafts\, and healthcare in manned space missions. \nI will conclude with my work in 2 miniaturised nano-aerosol technologies\, namely a) an instrument that can produce a constant number concentration of charged nanoaerosols\, a need unmet in aerosol instrumentation until now\, and b) a sensor that can both count and map the global distribution of airborne ultrafine particles\, a requirement crucial for the upcoming WHO air quality guidelines. The work in this theme has enormous significance in simulating cosmic dust conditions and satellite-based remote sensing of particulate matter distribution near the earth’s surface. \n  \nSpeaker: Dr. Akshay Shridhar Kale \nBiography: \nDr. Akshay Shridhar Kale is a senior postdoctoral affiliate at Trinity College and a teaching assistant at the Department of Engineering at the University of Cambridge\, UK. He is also an Honorary Adjunct Professor at the Department of Mechanical Engineering at COEP Technological University in Pune. His research interests lie in the development of miniaturised technologies and possesses a track record in the areas of microfluidic devices\, MEMS / acoustic devices and nanoaerosol instrumentation. He is also highly active in industry-oriented research and has completed several industrial consultancy projects in his areas of interest. His recent work on integration of miniaturisation principles with nanoaerosol instruments has won him grant funding awards that have partially supported the early stages of commercialisation of a portable nanoaerosol counter in collaboration with a spin-out company from his research group. At COEP\, he is actively involved in developing microfluidics research programs and a proposed centre of excellence in micro- and nano- manufacturing. Along with research and development\, he regularly teaches thermal and fluid science courses at Trinity College\, and has co-guided several undergraduate and Masters students through his research projects across Cambridge and COEP. Dr. Kale earned his B.Tech. in Mechanical Engineering at COEP\, followed by an MS and a PhD in thermal and fluid systems from Clemson University\, USA
URL:https://aero.iisc.ac.in/event/miniaturised-technologies-for-potential-applications-in-space-research/
LOCATION:STC Seminar Hall\, Dept. of Aerospace Engineering
CATEGORIES:AE Seminar
ATTACH;FMTTYPE=image/jpeg:https://aero.iisc.ac.in/wp-content/uploads/2025/04/Akshay-.jpg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Asia/Kolkata:20250327T150000
DTEND;TZID=Asia/Kolkata:20250327T163000
DTSTAMP:20260415T004141
CREATED:20250327T063920Z
LAST-MODIFIED:20250327T063920Z
UID:10000065-1743087600-1743093000@aero.iisc.ac.in
SUMMARY:Laser Beam Control Through Atmospheric Turbulence
DESCRIPTION:Laser beam is highly affected by prevailing atmospheric conditions and limit the system performance for various applications. The talk mainly covers the cause of optical turbulence\, its effects on laser beam and further discuss the technologies for controlling the beam for enhancing the effectiveness. Two main techniques namely the Tip-tilt correction for maintaining the beam at same position and adaptive optics technology for controlling the phase distortions and thus enhancing the signal strength on the receiver plane will be discussed. The experimental results for long range propagation will also be presented and discussed. \n  \nSpeaker: Dr. Amit Pratap\, Sc F\, CHESS (DRDO)
URL:https://aero.iisc.ac.in/event/laser-beam-control-through-atmospheric-turbulence/
LOCATION:STC Seminar Hall\, Dept. of Aerospace Engineering
CATEGORIES:AE Seminar
ATTACH;FMTTYPE=image/jpeg:https://aero.iisc.ac.in/wp-content/uploads/2025/03/Amit.jpg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Asia/Kolkata:20250327T100000
DTEND;TZID=Asia/Kolkata:20250327T113000
DTSTAMP:20260415T004141
CREATED:20250321T092005Z
LAST-MODIFIED:20250326T050121Z
UID:10000064-1743069600-1743075000@aero.iisc.ac.in
SUMMARY:Challenges and Strategies for Machining Aerospace High-Temperature Materials
DESCRIPTION:Abstract:\nThe presentation opens with a comparison of high-temperature materials with everyday metals. This will be followed by a discussion of challenges and an understanding of the machinability of high-temperature materials. Next\, various strategies for machining high-temperature materials\, along with practical real-life case studies\, will be presented. We will be introducing the concept of Feed Milling and its advantages. Pocket Milling is among challenging operations\, and we will discuss existing and alternate methods of pocket milling. Finally\, we will discuss the Barrel mill concept for faster profile machining and a few other solutions. \nSpeaker: H R Narasimhan \n  \nBiography:\nH R Narasimhan is currently a Business Development Manager at ISCAR Metalworks\, a multinational metal-cutting tools company affiliated with one of the world’s largest metalworking conglomerates\, the IMC Group (International Metalworking Companies). He has over 25 years of experience in the US Aerospace Industry in Los Angeles\, Oregon\, Seattle\, and Salt Lake City areas\, with several years of experience as National Product Manager for milling and specializing in machining high-temperature materials and composites
URL:https://aero.iisc.ac.in/event/challenges-and-strategies-for-machining-aerospace-high-temperature-materials/
LOCATION:Auditorium (AE 005)\, Department of Aerospace Engineering
CATEGORIES:AE Seminar
ATTACH;FMTTYPE=image/jpeg:https://aero.iisc.ac.in/wp-content/uploads/2025/03/Narasimhan.jpg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Asia/Kolkata:20250317T110000
DTEND;TZID=Asia/Kolkata:20250317T130000
DTSTAMP:20260415T004141
CREATED:20250311T111336Z
LAST-MODIFIED:20250311T111336Z
UID:10000062-1742209200-1742216400@aero.iisc.ac.in
SUMMARY:The longest known insect migration: Fusing Biology with Aerospace Engineering for innovative solutions
DESCRIPTION:The intriguing annual migration of the dragonfly species\, Pantala flavescens\, was reported a century ago.\nThe multi-generational\, transoceanic migration circuit spanning 14000-18000 kms\, from India to Africa is an\n astonishing feat for an insect few cms in size. Wind\, precipitation\, fuel\, breeding\, and the life cycle affect\n the migration\, yet understanding of their collective role in the migration remains elusive. We identify the\n transoceanic migration route by imposing a time constraint emerging from energetics on Dijkstra’s\npath-planning algorithm. Energetics calculations reveal Pantala flavescens can endure 90 hours of steady\n flight at 4.5m/s. We incorporate active wind compensation in Dijkstra’s algorithm to compute the migration\n route from years 2002 to 2007. The prevailing winds play a pivotal role; a direct crossing of the Indian Ocean\n from Africa to India is feasible with the Somali Jet\, whereas the return requires stopovers in Maldives and Seychelles.\n The migration timing\, identified using monthly-successful trajectories\, life cycle\, and precipitation data\,\ncorroborates reported observations. While working on this problem my mind ventured into many different\n applications of engineering\, which are all connected to the transoceanic migration of dragonflies.\nThe applications range from designing airfoils/wings\, sports aerodynamics and wind turbines to developing\n novel spectral accuracy algorithms for numerical simulations. Hence the ideas vary from simple mimicking\n of dragonflies to more complex abstractions arising from the need to understand their flying behaviour.\n\nSpeaker: Dr Sandeep Saha\n\nBiography :\n\nDr Sandeep Saha is an Associate Professor in the Department of Aerospace Engineering\, IIT Kharagpur.\nHe obtained his bachelors and masters degrees in Mechanical Engineering from IIT Kharagpur.\nHe completed his PhD in Mechanical Engineering from Imperial College London. He thereafter worked as  a\nMarie-Curie Experienced Researcher\, CNRS (Laboratoire FAST)\, Orsay\, France. Thereafter he worked as\n an Aerodynamics Engineer\, ALSTOM Power (now GE)\, Rugby\, UK; then as Research Scientist (Fluids)\,\nSchlumberger Gould Research\, Cambridge\, UK; and then as Academic Staff member\, Mechanical Engineering\,\nUniversity of Duisburg-Essen\, Germany (in collaboration with SIEMENS AG). He has worked on a range of\n problems in fluid mechanics and in recent years has focused on Low Reynolds number Aerodynamics\n ranging a broad spectrum of problems like insect flight\, extraterrestrial flight\, respiratory flows and\nwaste heat recovery and sports aerodynamics.
URL:https://aero.iisc.ac.in/event/the-longest-known-insect-migration-fusing-biology-with-aerospace-engineering-for-innovative-solutions/
LOCATION:STC Seminar Hall\, Dept. of Aerospace Engineering
CATEGORIES:AE Seminar
ATTACH;FMTTYPE=image/jpeg:https://aero.iisc.ac.in/wp-content/uploads/2025/03/Sandeep.jpg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Asia/Kolkata:20250305T153000
DTEND;TZID=Asia/Kolkata:20250305T170000
DTSTAMP:20260415T004141
CREATED:20250303T052352Z
LAST-MODIFIED:20250303T052352Z
UID:10000056-1741188600-1741194000@aero.iisc.ac.in
SUMMARY:Multi-fuel combustion for sustainable aviation
DESCRIPTION:With the climate change becoming as one of the main challenges for human existence\, every sector has to contribute in reducing its climate footprint. Being an international and hard to abate sectors\, aviation is struggling to find a viable replacement for kerosene. This talk focuses on a novel multi-fuel combustion strategy that is aimed at making aviation fuel agnostic. This is one of the latest endeavours that we are pursuing at TU Delft along with our industrial partners\, Airbus and Safran. \n  \nSpeaker:  Prof. Arvind G Rao \nBiography : \nDr. Arvind Gangoli Rao\, is a Chair Professor of Sustainable Aircraft Propulsion at the Faculty of Aerospace Engineering\, TU Delft. Dr. Gangoli Rao obtained his masters and PhD in aerospace engineering from the Indian Institute of Technology\, Bombay and later worked at Technion\, Israel as a post-doctoral researcher. Dr. Gangoli Rao is a specialist in aircraft propulsion and has worked on a variety of problems related to gas turbines and novel propulsion systems for aircraft\, especially ones dealing with the usage of alternative energy sources. He has authored around 100 publications. Dr. Gangoli Rao has been involved in several EU projects and Dutch funded projects on sustainable aviation along with the industrial partners. He is the Dutch representative International Society of Air Breathing Engines (ISABE). He is also a member of the ACARE (Advisory Committee for Research and innovation in Europe) working group on Energy and Environment.
URL:https://aero.iisc.ac.in/event/multi-fuel-combustion-for-sustainable-aviation/
LOCATION:Auditorium (AE 005)\, Department of Aerospace Engineering
CATEGORIES:AE Seminar
ATTACH;FMTTYPE=image/jpeg:https://aero.iisc.ac.in/wp-content/uploads/2025/03/Arvind.jpg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Asia/Kolkata:20250110T150000
DTEND;TZID=Asia/Kolkata:20250110T170000
DTSTAMP:20260415T004141
CREATED:20241230T092927Z
LAST-MODIFIED:20241230T092927Z
UID:10000047-1736521200-1736528400@aero.iisc.ac.in
SUMMARY:PHONONIC MATERIALS – AN AVENUE FOR PASSIVE FLOW CONTROL
DESCRIPTION:Specific modal and non-modal mechanisms (flow coherences) in fluid flows\, associated with distinct time and length scales\, govern important flow phenomena\, e.g.\, laminar-to-turbulent transition\, turbulent drag\, and flow separation. Consequently\, numerous passive strategies featuring compliant materials have explored the effect of Fluid-structure interaction (FSI) on various flow coherences. In recent years\, the emergence of Phononic materials (PMs) with engineered internal architectures provides a powerful tool to encode desired material behavior. Therefore\, flow configurations leveraging fluid-PM interaction offer an exciting opportunity to precisely engineer the spatiotemporal scales of the structural response relative to the flow coherences\, allowing a more fundamental and systematic study of FSI physics. Initial research efforts adopting the fluid-PM framework have demonstrated effective interaction with flow instabilities\, e.g.\, Tollmien–Schlichting waves. Building on these efforts\, our research group explores interesting FSI dynamics of canonical fluid flow – PM configurations to illustrate the potential of PMs for passive flow control. \nIn this talk\, I will present an overview of the PM design strategy and numerical and experimental results from our current fluid-PM interaction research projects. We configure PMs as subsurfaces and explore their FSI with flow coherences in various flow settings\, e.g.\, flow coherences in a turbulent channel flow\, Karman vortex streets in a subsonic flow past a cylinder\, wake vortices in flow past an airfoil. \n  \nSpeaker: Dr. Vinod Ramakrishnan \n  \nBiography:  \nDr. Vinod Ramakrishnan is a Postdoctoral research associate working with Dr. Kathryn Matlack at the University of Illinois at Urbana-Champaign. His research involves numerical and experimental investigations of Fluid-Metamaterial interaction models to explore avenues for passive flow control. Vinod holds a PhD in Mechanical Engineering from the University of California San Diego (2023) and a B. Tech in Mechanical Engineering from IIT Gandhinagar (2018). He worked with Dr. Michael Frazier during his PhD\, where his research explored phase transitions and strategies to control domain walls in multistable metamaterials to promote their adoption in applications\, e.g.\, energy harvesting\, mechanical memory devices\, and deployable structures.
URL:https://aero.iisc.ac.in/event/phononic-materials-an-avenue-for-passive-flow-control/
LOCATION:AE Auditorium
CATEGORIES:AE Seminar
ATTACH;FMTTYPE=image/jpeg:https://aero.iisc.ac.in/wp-content/uploads/2024/12/Vinod-.jpg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Asia/Kolkata:20241218T110000
DTEND;TZID=Asia/Kolkata:20241218T123000
DTSTAMP:20260415T004141
CREATED:20241217T044151Z
LAST-MODIFIED:20241217T044151Z
UID:10000044-1734519600-1734525000@aero.iisc.ac.in
SUMMARY:Phase Transformations in Multifunctional Materials
DESCRIPTION:Phase transformation materials are characterized by their ability to rapidly and reversibly switch between distinct properties\, such as insulating and conducting\, paramagnetic and ferromagnetic\, or Li-rich and Li-poor. These transformations\, however\, are accompanied by abrupt structural changes in the crystal lattices\, which can nucleate defects\, accumulate strain energy\, and accelerate material decay. We investigate these transformations in multifunctional materials from the viewpoint of Ericksen’s multiple energy wells. By doing so\, we identify important links between material constants\, crystallographic microstructures\, and macroscopic properties. This approach to understanding material behavior from the perspective of energy landscapes may suggest new ways to design materials with improved properties and lifespans. In this talk\, I will present our findings on phase transformations in battery electrodes (intercalation compounds) and soft magnetic alloys.\n\n Speaker: Ananya Balakrishna\n\nBiography:\nAnanya Renuka Balakrishna is an Assistant Professor in the Materials Department at the University of California Santa Barbara. She received her B.Tech degree in Mechanical Engineering from the National Institute of Technology Karnataka and her Ph.D. in Solid Mechanics and Materials Engineering from the University of Oxford. Before her current appointment\, she was a Lindemann Postdoctoral Fellow at MIT and the University of Minnesota and joined the faculty in the Department of Aerospace & Mechanical Engineering at the University of Southern California in 2020. Her research group develops theoretical models to understand the interplay between fundamental material constants and microstructural instabilities\, and how they collectively shape the physical response of a material.
URL:https://aero.iisc.ac.in/event/phase-transformations-in-multifunctional-materials/
LOCATION:AE Auditorium
CATEGORIES:AE Seminar
ATTACH;FMTTYPE=image/jpeg:https://aero.iisc.ac.in/wp-content/uploads/2024/12/Ananya-.jpg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Asia/Kolkata:20241024T150000
DTEND;TZID=Asia/Kolkata:20241024T170000
DTSTAMP:20260415T004141
CREATED:20241024T043037Z
LAST-MODIFIED:20241121T062124Z
UID:10000026-1729782000-1729789200@aero.iisc.ac.in
SUMMARY:Learning stable and accurate numerical schemes for LES applications
DESCRIPTION:Deep neural network machine learning models have demonstrated success in addressing time-dependent Partial Differential Equations (PDEs\, e.g.\, Physics Informed Neural Networks or PINNs and mesh graph network models by Google DeepMind). Yet\, these network models encounter two significant challenges: \n(1) generalisation to problems beyond their training data and (2) numerical instability during long-time evolutions. \nIn this talk a new spectral framework based on a local error analysis  is presented to design and optimize numerical methods for convection problems called Local Transfer Analysis (LTA). LTA converts traditional numerical discretisation to a network of impedance blocks where parameters can be introduced to tune the local block impedance. Such a network’s impedance can be tuned using a Deep Graph Network that predicts optimal values for the parameters that lead to matched impedance. This allows locally tuned traditional numerical schemes that do not suffer from stability problems\, at the same time generalises to a widerange of problems outside of training on unstructured meshes outperforming the unoptimised scheme. Application of the framework to tune and optimise the Two-step Taylor Galerkin scheme (TTGC) used extensively in CERFACS for Combustion LES problems is presented for linear convection\, inviscid Burgers’ and Euler equations on unstructured meshes. \n\nSpeaker:Dr. Pavanakumar Mohanamuraly \nBiography: \nDr. Pavanakumar Mohanamuraly currently serves as a Senior Researcher at the ALGO-COOP Team\, CERFACS\, Toulouse\, France. He has extensive experience in CAD-based Aerodynamics Shape Optimisation\, adjoint sensitivity analysis\, Machine Learning\, and high-performance computing\, and brings a wealth of knowledge and practical experience in algorithmic differentiation applied to parallel codes. He holds a PhD in Aerospace Engineering from Queen Mary University of London and an MS in Aerospace Engineering from Pennsylvania State University. His career includes \nroles at Integrated Test Range\, DRDO\, Balasore\, Honeywell Technology Solutions\, Bangalore\, National Aerospace Laboratories\, India\, Airbus Group\, Bangalore. His work has significantly contributed to the advancement of computational methods in CERFACS\, particularly in the areas of hybrid CFD and machine learning and parallel adaptive mesh refinement and exascale load-balancing problems.
URL:https://aero.iisc.ac.in/event/learning-stable-and-accurate-numerical-schemes-for-les-applications/
LOCATION:AE Auditorium
CATEGORIES:AE Seminar
ATTACH;FMTTYPE=image/jpeg:https://aero.iisc.ac.in/wp-content/uploads/2024/10/Reconstruction-Era-and-the-Gilded-Age-History-11th-Grade-Red-Variant-by-Slidesgo-1.jpg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Asia/Kolkata:20241024T110000
DTEND;TZID=Asia/Kolkata:20241024T120000
DTSTAMP:20260415T004141
CREATED:20241118T094855Z
LAST-MODIFIED:20241118T095402Z
UID:10000022-1729767600-1729771200@aero.iisc.ac.in
SUMMARY:Bandgap Formation Mechanisms in Phononic Crystals with Square Bravais Lattice
DESCRIPTION:The engineered periodic structures\, known as phononic crystals\, exploit variations in geometric design to achieve distinct impedance contrasts\, thereby controlling wave propagation characteristics. These materials can effectively attenuate acoustic waves across a broad range of frequencies. The band structure of these metamaterials\, which dictates the range of frequencies over which wave propagation is prohibited\, is heavily influenced by the geometry\, mechanical properties\, and the symmetry group of the phononic crystal. The presence of higher symmetries often correlates with the emergence of complete omnidirectional bandgaps (BGs) — frequency ranges where waves of all polarizations attenuate exponentially due to mechanisms such as Bragg scattering\, local resonances\, or their combination. \nIn this work\, we calculate the band structures of p4\, p4mm and p4gm phononic crystals for real and imaginary Bloch wavevectors to understand the mechanisms behind the BG formation. We evaluate the BG’s attenuation properties by analyzing the real eigenvalues of the imaginary Bloch wavevectors\, which provide measurable evidence of the waves’ exponential decay. Furthermore\, we conduct experimental and numerical measurements of transmission loss for both P- and S-waves via finite crystals\, confirming the superior attenuation facilitated by the coupling of the Bragg and resonance BG mechanisms. This research validates the correlation between the measured transmission loss and the theoretically predicted evanescent modes within the BGs. \nSpeaker: Prof. Pavel I. Galich \nBiography: Pavel I. Galich\, PhD\, is an Assistant Professor at the Technion – Israel Institute of Technology\, where he leads the Wave Mechanics and Metamaterials Laboratory within the Faculty of Aerospace Engineering. He earned his PhD from the Technion\, AE and his MSc and BSc in Applied Mathematics and Physics from the Moscow Institute of Physics and Technology\, both with honors. His research interests focus on acoustic metamaterials\, wave propagation in non-linear materials\, and advanced composites for aerospace applications. Pavel has published extensively in high-impact journals and has presented his work at numerous international conferences.
URL:https://aero.iisc.ac.in/event/bandgap-formation-mechanisms-in-phononic-crystals-with-square-bravais-lattice/
LOCATION:AE Auditorium
CATEGORIES:AE Seminar
ATTACH;FMTTYPE=image/jpeg:https://aero.iisc.ac.in/wp-content/uploads/2024/04/AE-Seminar.jpg
END:VEVENT
END:VCALENDAR