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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

Online
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 […]

Onboard Trajectory Optimization for System Autonomy on Saturday

Auditorium (AE 005), Department of Aerospace Engineering

Onboard trajectory optimization lies at the heart of true system autonomy, including UAVs, Robots, spacecrafts, launch vehicles, missiles, and so on. Onboard trajectory optimization in real time (optimal guidance) can be generally viewed as a difficult problem. However, it holds great promise for true system autonomy. The complex interplay between autonomy and onboard decision support […]

Ph.D. (Engg): Compressive behavior of continuous fiber polymer composites in the presence of process-induced defects

AE Auditorium
Virtual Event Virtual Event

The current work examines how process-induced defects influence the compressive behavior of composite structures. The defects analyzed include wrinkles at the macroscale and fiber misalignment at the microscale. Uni-directional carbon fiber-reinforced polymer composites with intentionally created wrinkles were produced by strategically positioning laminate strips. Through comprehensive experimental characterization, the research thoroughly investigates the impact of […]

Nature of Phase Kinetics and Memory in Shape Memory Alloys

Auditorium (AE 005), Department of Aerospace Engineering

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. […]

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