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Ph.D.(Engg): Investigations on Hypersonic Laminar to Turbulent Boundary Layer Transition in a Shock Tunnel.

STC Seminar Hall, Dept. of Aerospace Engineering

The laminar to turbulent boundary layer transition onset has perplexed fluid dynamics community irrespective of the flow regime under which the phenomenon is probed. The complexity of the problem is compounded in high-speed compressible flows where in the transition onset location is a strong function of many subtle factors like freestream quality, surface roughness, wall […]

MTech(Res) : Elastic Wave Dispersion Analysis and Mode Shape Investigation of Higher-order Beam Theory for Thick Beams

Online
Hybrid Hybrid Event

The dynamic behavior of structural components over broad frequency ranges, particularly thick beams under different constraints, is important in many engineering applications where reduced dimensional modeling is required for design. Applications are aerospace structures, mechanical systems and civil infrastructure. The rigid cross-section assumption in Euler-Bernoulli and even third-order beam theories cannot accurately capture the effects […]

Challenges and Strategies for Machining Aerospace High-Temperature Materials

Auditorium (AE 005), Department of Aerospace Engineering

Abstract: The 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 […]

Laser Beam Control Through Atmospheric Turbulence

STC Seminar Hall, Dept. of Aerospace Engineering

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 […]

Ph.D. (Engg): Control of Alternating Flow Phenomena in Transonic Shock Wave Boundary Layer Interactions Over Payload Region of a Generic Launch Vehicle Model

CEH Conference Hall- Room No.239, Second Floor, Department of Aerospace Engineering

The transonic Mach number regime is a critical phase in the atmospheric ascent of launch vehicles, where aerodynamic loads peak due to the combined effects of high freestream dynamic pressure and angle of attack. Besides high steady loads, launch vehicles experience very high levels of pressure fluctuations caused by interactions between the unsteady λ-shock system […]

Ph.D. (Engg): Behaviour Modelling of Non-Cooperative Space Objects and Strategies for Decision Support in Space Situational Awareness

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Hybrid Hybrid Event

In this modern era, Space is vital for a Nation’s prosperity and without space, many critical functions would simply stop working. The increasing number of satellite launches in recent times, is congesting the space environment. Space is also becoming an increasingly contested environment from the perspective of non-civilian applications of satellites. The civilian and non-civilian […]

Miniaturised technologies for potential applications in space research

STC Seminar Hall, Dept. of Aerospace Engineering

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 […]

Ph.D. (Engg): Navigation of Autonomous Vehicles using Event Cameras and Modified RRT Methods

Online
Hybrid Hybrid Event

Autonomous vehicles, such as unmanned aerial vehicles (UAVs) and autonomous mobile robots (AMRs), are at the forefront of technological innovation and are widely used across various applications. As these vehicles become more agile and operate primarily in unstructured environments, the components of the navigation pipeline must function in real time while optimizing limited onboard computing […]

Eulerian-Lagrangian Modeling of Flash-boiling Injection Processes in Internal Combustion Engines

Online
Hybrid Hybrid Event

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 […]

Electrographic Seizure Detection and Forecasting for People with Epilepsy

Auditorium (AE 005), Department of Aerospace Engineering

About fifty million people worldwide suffer from epilepsy, a neurological disorder marked by sudden, recurrent episodes of abnormal electrical activity in the brain, potentially causing sensory disturbances, convulsions and/or loss of consciousness. Seizure diaries that record the start and end times of each seizure, along with associated information are important in the management of the […]

Nonlinear saturation of Mack modes in a hypersonic boundary layer

Auditorium (AE 005), Department of Aerospace Engineering

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 […]

Space Domain Awareness in the Artemis Era

STC Seminar Hall, Dept. of Aerospace Engineering

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 […]

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