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X-ORIGINAL-URL:https://aero.iisc.ac.in
X-WR-CALDESC:Events for Department of Aerospace Engineering
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BEGIN:VTIMEZONE
TZID:Asia/Kolkata
BEGIN:STANDARD
TZOFFSETFROM:+0530
TZOFFSETTO:+0530
TZNAME:IST
DTSTART:20260101T000000
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BEGIN:VEVENT
DTSTART;TZID=Asia/Kolkata:20260706T093000
DTEND;TZID=Asia/Kolkata:20260706T180000
DTSTAMP:20260807T143821
CREATED:20260629T060709Z
LAST-MODIFIED:20260802T091747Z
UID:10000134-1783330200-1783360800@aero.iisc.ac.in
SUMMARY:Workshop on "Signal Processing for High-Precision Navigation and Surveillance"
DESCRIPTION:Dear All\, \nThe Dept. of Aerospace Engineering\, in collaboration with Centre for Continuing Education is conducting a one-week tutorial workshop on “Signal Processing for High-Precision Navigation and Surveillance”\, during 06 – 11 July 2026. \nBased on some requests\, the due date of Early Registration has been extended to 28-06-2026 (Sunday). \nMore details can be found here: https://cce.iisc.ac.in/self-support-courses/signal-processing-for-high-precision-navigation-and-surveillance/ \nLimited seats are still available on first come\, first serve basis. There is substantial reduction (60%) of course fee for IISc students and project staff (Note: Research Associates and Postdocs come under Professional category).
URL:https://aero.iisc.ac.in/event/workshop-on-signal-processing-for-high-precision-navigation-and-surveillance/
LOCATION:Auditorium (AE 005)\, Department of Aerospace Engineering
ATTACH;FMTTYPE=image/jpeg:https://aero.iisc.ac.in/wp-content/uploads/2026/06/ai.jpeg
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BEGIN:VEVENT
DTSTART;TZID=Asia/Kolkata:20260709T150000
DTEND;TZID=Asia/Kolkata:20260709T170000
DTSTAMP:20260807T143821
CREATED:20260707T091903Z
LAST-MODIFIED:20260712T062534Z
UID:10000135-1783609200-1783616400@aero.iisc.ac.in
SUMMARY:Characterizing Dynamic Response of Structures and Materials under Extreme Loading Environments
DESCRIPTION:Protective structures and vessels used in marine and defense applications are increasingly required to withstand extreme dynamic loading caused by explosions in air and underwater. Designing lightweight yet resilient structures demands a fundamental understanding of shock-wave interactions with materials\, structural geometry\, and the surrounding medium. This seminar presents a series of experimental investigations that progressively examine these aspects using advanced diagnostics.\nThe seminar begins with a comparative study of circular composite plates subjected to planar shock loading in air and underwater. The experiments reveal how the loading medium governs structural deformation\, vibration characteristics\, and cavitation-induced secondary loading\, providing insights into shock–structure interaction.\nNext\, the influence of structural geometry is examined through blast experiments on curved polymeric sandwich composite panels. The effects of curvature and boundary conditions on structural response are investigated\, demonstrating that geometric tailoring can significantly enhance blast resistance and modify damage mechanisms.\nThe seminar concludes by exploring the complex interaction between near-field underwater explosions and sandwich composite structures. Experimental observations capture the coupled effects of shock waves\, gas-bubble oscillations\, surface cavitation\, and structural deformation. The results highlight the influence of explosive stand-off distance and core density on impulse transfer\, cavitation dynamics\, and failure mechanisms\, providing valuable insights into fluid–structure interaction under extreme underwater loading.\nTogether\, these experimental studies advance the understanding of the dynamic response of composite structures under extreme loading and provide guidance for the design of resilient lightweight structures for naval\, offshore\, and protective engineering applications.\n\nSpeaker: Dr. Akshay Pandey\n\nBiography:\nDr. Akash Pandey is currently working as a Research Associate at the University of Cambridge. He previously worked at the Indian Space Research Organisation (ISRO) before earning his Ph.D. from the University of Rhode Island. His research focuses on the dynamic response of structures and materials subjected to extreme loading conditions\, including blast and impact
URL:https://aero.iisc.ac.in/event/characterizing-dynamic-response-of-structures-and-materials-under-extreme-loading-environments/
LOCATION:Online
CATEGORIES:AE Seminar
ATTACH;FMTTYPE=image/png:https://aero.iisc.ac.in/wp-content/uploads/2026/07/Dr.-Akshay-Pandey.png
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BEGIN:VEVENT
DTSTART;TZID=Asia/Kolkata:20260716T150000
DTEND;TZID=Asia/Kolkata:20260716T170000
DTSTAMP:20260807T143821
CREATED:20260708T083450Z
LAST-MODIFIED:20260712T064148Z
UID:10000136-1784214000-1784221200@aero.iisc.ac.in
SUMMARY:FROM MOTION PLANNING TO MULTI-ROBOT AUTONOMY IN CONSTRAINED AND DISCONNECTED ENVIRONMENTS
DESCRIPTION:Autonomous robots operating in challenging environments must make reliable decisions under geometric\, dynamic\, and environmental constraints. In such settings\, motion planning plays a central role in enabling robots to move safely and efficiently through cluttered\, narrow\, disconnected or uncertain spaces\, while balancing feasibility\, robustness\, and computational efficiency. \nThis talk will focus on motion planning for quadrotors flight through constrained regions such as narrow windows and cluttered spaces. In the later part of the talk\, I will briefly broaden the discussion to autonomy problems beyond single-robot flight\, including hierarchical coverage path planning in disconnected regions and terrain-aware balanced area allocation for heterogeneous multi-robot systems. Together\, these works highlight how planning methods must scale from vehicle-level motion generation to higher-level coordination and task allocation in challenging operational environments. \nSpeaker: Dr. Saurabh Upadhyay \nBiography: \nSaurabh Upadhyay received B.E. degree from SSGMCE\, Shegaon in 2009\, M.Tech. degree from IIT Guwahati in 2012\, and Ph.D. degree from IISc Bengaluru in 2018. He is a Lecturer in Space Engineering at Cranfield University\, UK. His research interests lie in mobile robots for extreme environments\, with special focus on low onboard resources decision making and ISRU-enabled robot design. He has received A.K. Rao best PhD thesis medal 2018 in Aerospace Engineering at IISc Bengaluru\, and he is endorsed as a potential leader/exceptional promise by Royal Academy of Engineering in 2021. He is an IEEE senior member\, lifetime AIAA Senior member\, and fellow of HEA.
URL:https://aero.iisc.ac.in/event/from-motion-planning-to-multi-robot-autonomy-in-constrained-and-disconnected-environments/
LOCATION:Auditorium (AE 005)\, Department of Aerospace Engineering
CATEGORIES:AE Seminar
ATTACH;FMTTYPE=image/png:https://aero.iisc.ac.in/wp-content/uploads/2026/07/Saurabh-Upadhyay-Talk.png
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BEGIN:VEVENT
DTSTART;TZID=Asia/Kolkata:20260724T113000
DTEND;TZID=Asia/Kolkata:20260724T130000
DTSTAMP:20260807T143821
CREATED:20260723T070319Z
LAST-MODIFIED:20260802T100840Z
UID:10000139-1784892600-1784898000@aero.iisc.ac.in
SUMMARY:Modelling the response of Turbulent CH4-Air premixed flame using Resolvent Analysis
DESCRIPTION:An understanding of the flame transfer function (FTF) is essential for predicting the onset of combustion instabilities in gas turbine combustors\, where flow oscillations excited by acoustic forcing drive burning area and heat-release oscillations that can couple unfavourably with combustor acoustic modes. The heatrelease response is expensive to characterize directly through time resolved simulation\, motivating reduced order approaches that operate on a single time-averaged mean flow. In the present work\, we develop and critically assess a resolvent analysis (RA) based reduced order model for the FTF of a turbulent premixed methane air round jet flame (φ=0.8\, T_u=800 K\, Re≈1500)\, with the time-averaged base flow obtained from explicit-filtering large eddy simulation (EFLES) of the unforced flame. Two aspects of the RA formulation are examined systematically: the passive versus active treatment of the flame i.e.\, whether coherent reaction rate fluctuations are dropped or retained in the linearised species/energy equations and the choice of heatrelease rate closure across four models of increasing physical detail (a global Arrhenius model\, ARR-A; a Bayesian calibrated modified Arrhenius model with a cold-boundary correction\, ARR-B; and global and local Eddy Break-Up models\, EBUG and EBUL). RA-predicted FTF gain and phase are validated against harmonically forced LES over St=[0.2\,1.2]\, and the spatial structure of the leading RA response modes is compared against SPOD modes extracted from the same forced LES. FTF phase is recovered robustly by all four models up to St≈0.8\, since the leading velocity response mode and hence the convective phase speed governing flame surface wrinkling is set almost entirely by the mean vorticity and density field and shows weak dependence on the heatrelease closure. FTF gain is far more model dependent: the passive ARR-B model gives the best overall quantitative match to LES\, with excellent agreement at St=0.2 where non-linear flame tip pocket shedding is negligible\, while both EBU models underpredict gain across the full St range because their reaction rate is a function of progress variable and density alone\, giving identically zero sensitivity to temperature and fuel mass fraction fluctuations. The resolvent gain spectrum collapses toward strongly low rank behaviour with increasing St a single mode pair recovers 99% of the response for St≥0.6\, while three mode pairs are needed at St=0.2 and the Arrhenius-type models produce systematically higher gains than the EBU models owing to their spatially extended sensitivity field. Switching from the passive to the active formulation leaves the velocity response essentially unchanged but qualitatively alters the thermochemical response: temperature and species fluctuations\, which propagate downstream as undamped travelling waves in the passive case\, decay beyond the flame brush in the active case\, in closer qualitative agreement with the LES SPOD modes. This improved qualitative fidelity does not\, however\, translate into better FTF gain prediction the active formulation degrades gain agreement for every model examined\, a result traced to the single free parameter in each heatrelease closure being calibrated only against the mean heatrelease field\, with no constraint on the local dynamic sensitivities that the active formulation feeds back into the linear operator. The overall picture that emerges is that RA provides a reliable and computationally efficient framework for predicting FTF in axisymmetric premixed-flame configurations. The results further establish a clear pathway toward improved quantitative gain prediction through reaction-rate closures that represent the local dynamic sensitivities of the flame more faithfully\, enabling increasingly predictive low-order models from time-averaged base flows. Further work is needed to improve the active flame approach by developing reaction rate closures that capture both the mean heatrelease field and the local dynamic sensitivities governing flame response feedback. \n  \nSpeaker : SATYAM CHAUHAN \nResearch Supervisor :  Santosh Hemchandra
URL:https://aero.iisc.ac.in/event/modelling-the-response-of-turbulent-ch4-air-premixed-flame-using-resolvent-analysis/
LOCATION:STC Seminar Hall\, Dept. of Aerospace Engineering
CATEGORIES:Thesis Colloquium / Defence
ATTACH;FMTTYPE=image/jpeg:https://aero.iisc.ac.in/wp-content/uploads/2026/08/SATYAM.jpg
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BEGIN:VEVENT
DTSTART;TZID=Asia/Kolkata:20260727T113000
DTEND;TZID=Asia/Kolkata:20260727T130000
DTSTAMP:20260807T143821
CREATED:20260723T053755Z
LAST-MODIFIED:20260802T095511Z
UID:10000138-1785151800-1785157200@aero.iisc.ac.in
SUMMARY:Ph.D. (Engg) : Wave Propagation in Small Scale Structure Modelled With Nonlocal Continuum Theory
DESCRIPTION:This thesis develops analytical and computational frameworks for studying static and dynamic behaviour in nonlocal elastic structures\, focusing on wave propagation\, stress localization\, and guided-wave phenomena at micro- and nano-scales\, where size-dependent effects fall outside classical continuum mechanics. Eringen’s differential nonlocal elasticity theory and higher-order continuum formulations are used to capture these small-scale interactions.\nThe work first examines plane-stress problems with geometric singularities (cracks\, circular and elliptical holes) using a finite element formulation based on a second-order stress-gradient nonlocal model. While the static displacement equation stays independent of the nonlocal length-scale parameter\, nonlocal effects become significant near large displacement gradients and stress concentrations. Unlike classical elasticity\, which predicts singular stresses at crack tips\, the nonlocal formulation produces bounded stress fields. Dynamically\, nonlocal interactions primarily affect inertia terms\, altering transient response rather than stiffness.\nTo handle high-frequency wave propagation efficiently\, a spectral super-element method combines wavenumber-frequency domain spectral elements with conventional finite elements\, enabling accurate modelling of cracks and holes while retaining exact wave representation in uniform regions. This eliminates classical stress singularities and supports applications such as MEMS analysis. A related hybrid spectral-finite element framework further restricts finite element use to defect regions\, cutting computational cost while accurately predicting stress concentration and intensity factors\, validated against commercial FE software for plates with holes and cracks.\nThe second major focus is guided-wave behaviour in elastic waveguides and plates under nonlocal constitutive laws. Analytical Lamb-wave dispersion relations are derived via Helmholtz decomposition with traction-free boundary conditions. Using Eringen’s second-order nonlocal model and strain-gradient theory\, the study reveals non-classical effects\, including wavenumber saturation\, modified cut-off frequencies\, and escape frequencies\, in symmetric and antisymmetric Lamb modes. Comparisons show that simpler one-dimensional models (Mindlin-Herrmann rod\, Timoshenko beam) can reproduce key guided-wave characteristics of the full two-dimensional nonlocal model.\nFinally\, a coupling framework uses local models away from defects and nonlocal elasticity near cracks. Since such coupling typically causes spurious reflections at domain interfaces\, a novel transition-zone strategy is proposed to suppress these artifacts. Implemented in a frequency-domain spectral element framework\, it is applied to waveguides with horizontal and vertical through-width cracks\, achieving accurate\, efficient\, and physically consistent wave analysis.\nOverall\, this thesis establishes a unified framework for nonlocal wave propagation and stress analysis in structures with discontinuities\, offering practical tools for wave-based sensing\, structural health monitoring\, ultrasonic nondestructive evaluation\, and micro- and nano-scale structural design. \n  \nSpeaker :  Ajeet Kumar Yadav \nResearch Supervisor : Prof S. Gopalakrishnan
URL:https://aero.iisc.ac.in/event/ph-d-engg-wave-propagation-in-small-scale-structure-modelled-with-nonlocal-continuum-theory/
CATEGORIES:Thesis Colloquium / Defence
ATTACH;FMTTYPE=image/jpeg:https://aero.iisc.ac.in/wp-content/uploads/2026/08/Ajeet.jpg
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BEGIN:VEVENT
DTSTART;TZID=Asia/Kolkata:20260731T120000
DTEND;TZID=Asia/Kolkata:20260731T130000
DTSTAMP:20260807T143821
CREATED:20260724T101000Z
LAST-MODIFIED:20260802T104845Z
UID:10000140-1785499200-1785502800@aero.iisc.ac.in
SUMMARY:AstroNav: Autonomy for Navigating Deep Space and Beyond
DESCRIPTION:Autonomous navigation is becoming a critical capability for modern deep space exploration\, planetary defense\, and commercial space ventures. Traditional spacecraft navigation relies heavily on ground-based radio contact to collect two-way radiometric Doppler and range measurements. However\, this structural dependency introduces significant communication latency and places a heavy burden on oversubscribed ground antenna networks. For cutting-edge applications—such as navigating through the active plumes of Enceladus or executing precise planetary defense maneuvers like ion beam deflection and gravity tractoring—the turnaround time of ground-based loops is simply too slow. Furthermore\, legacy onboard solutions present severe limitations in modularity or applicability.\n\nThis talk addresses these challenges by highlighting the critical need for autonomous navigation within the rapidly expanding modern space economy. We begin with a historical review of autonomous deep space navigation\, tracking its evolution from the pioneering AutoNav software developed by NASA’s Jet Propulsion Laboratory (JPL) for Deep Space 1 through its critical successes on the Stardust and Deep Impact comet missions. The presentation then provides a comprehensive overview of AstroNav\, the next-generation successor designed to overcome legacy limitations. We will detail the specific architectural and algorithmic augmentations that advance AstroNav far beyond past technologies\, including its modular\, plug-and-play capability to ingest multi-source data. Finally\, we will present the concept of operations for AstroNav’s upcoming flight technology demonstration payload integrated onto the CAPSTONE-2 spacecraft\, scheduled for launch in mid-2027.\n\nSpeaker : Dr Swati Mohan\n\nBiography:\nDr Swati Mohan was born in Bengaluru\, India\, and emigrated to the United States of America with her parents when she was one year old. Dr. Mohan attended Cornell University and received her B.S. in 2004 in Mechanical and Aerospace Engineering.  After a brief stint working at NASA Jet Propulsion Laboratory on the Cassini mission\, in 2004-2005\, she went on to graduate school at Massachusetts Institute of Technology (MIT) in the Aeronautics/Astronautics department.  She rejoined NASA’s Jet Propulsion Laboratory in 2010 in the Guidance\, Navigation\, and Controls section.  Since then\, Swati has worked on a number of missions\, such as GRAIL\, OCO-3\, Mars 2020 Perseverance\, and Psyche. She is best known for being the voice of Entry\, Descent\, and Landing for Perseverance’s landing on February 18\, 2021.  She was the GNC lead and a Chief Engineer for the Psyche mission\, which launched on October 13\, 2023.  After launching Psyche\, Swati has transitioned to the Mars Sample Return mission.  She first served as Chief Engineer for the Mars Launch System\, then later as the Descent Command and Control Lead.  She is currently the Project Manager for AstroNav\, an autonomous celestial navigation payload.
URL:https://aero.iisc.ac.in/event/astronav-autonomy-for-navigating-deep-space-and-beyond/
LOCATION:STC Seminar Hall\, Dept. of Aerospace Engineering
CATEGORIES:AE Seminar
ATTACH;FMTTYPE=image/jpeg:https://aero.iisc.ac.in/wp-content/uploads/2026/08/Swati.jpg
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