Aerospace Engineering (AE): Recent submissions
Now showing items 41-60 of 480
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Development and critical assessment of a new flic method for base flows
The motivation for the present work stems from two complex base flow problems of relevance to satellite launch vehicles, namely the flow about the base of a rocket body containing an exhaust jet and the aerodynamics of ... -
Reverse transition in a two dimensional boundary layer flow
Experiments on reverse transition were conducted in two-dimensional accelerated incompressible turbulent boundary layers. Mean velocity profiles, longitudinal velocity fluctuations u′u'u′ (i.e., u′2‾\overline{u'^2}u′2), ... -
Inverse transition from turbulent to laminar flow in a two-dimensional channel
An experimental investigation on inverse transition from turbulent to laminar flow in a two-dimensional channel was carried out. The experiments were conducted in the inverse transition region at Reynolds numbers of 525, ... -
Studies on transition from laminar to turbulent flow in a pipe
This thesis describes some investigations on the transition from laminar to turbulent flow in a straight pipe of circu lar cross-section. It is found that Emmons* Theory of transition by the formation and growth of ... -
UAV Group Autonomy In Network Centric Environment
It is a well-recognized fact that unmanned aerial vehicles are considered an essential element in today’s network-centric integrated battlefield environment. Compared to solo UAV missions, deploying multiple unmanned aerial ... -
Learning Action Priors for Deep Visual Predictions
This thesis addresses the critical challenge of visual prediction in mobile robotics, particularly focusing on scenarios where cameras mounted on autonomous robots must navigate dynamic environments with human presence. ... -
Morse Potential Based Aggregation in Multiagent Systems with Applications to Circumnavigation and Exploration
Swarms of autonomous vehicles, which are modeled as Multi-agent systems (MASs), have found increasing applications in search and rescue, reconnaissance missions, collaborative transportation, among many other applications ... -
Decongestion Strategies for Dense Urban Airspace
With the rapid growth in the number of uncrewed aircraft systems (UAS) being deployed for on-demand delivery applications, severe congestion is anticipated in the low-altitude class-G urban airspace. Thus, there is a need ... -
Development of Generalizable Spiking Neural Network-Based Learning Frameworks For Solving Perimeter Defense Problem
Spiking Neural Networks (SNNs) are third-generation neural networks that can process information in a more biologically realistic way compared to other neural networks such as sigmoidal networks. They process the information ... -
A higher order finite volume discretization based on Staggered Update Procedure (SUP)
The unstructured data-based finite volume solvers are widely adopted in industrial computations owing to their robustness and flexibility in handling complex geometries. Most of these solvers use linear reconstruction ... -
Navigation of Autonomous Vehicles using Event Cameras and Modified RRT Methods
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 ... -
Behaviour Modelling of Non-Cooperative Space Objects and Strategies for Decision Support in Space Situational Awareness
Space Situational Awareness [SSA] is defined as the comprehensive knowledge of Resident Space Objects [RSO] which may include satellites, rocket bodies, debris etc. and the ability to understand their behaviour. SSA solutions ... -
Investigations on Hypersonic Laminar to Turbulent Boundary Layer Transition in a Shock Tunnel
The phenomenon of laminar to turbulent boundary layer transition has baffled researchers in high speed fluid dynamics and aerodynamics for over half a century. The reason for departure of ordered laminar boundary layer ... -
Multi-Agent Pursuit-Evasion and Coverage Strategies
Autonomous agents are increasingly being used to solve many tasks deemed complex by humans with ease and effectiveness. Two such related applications are in defence scenarios and in coverage. Inspired by these applications, ... -
Inflatable Aerodynamic Decelerators for Atmospheric Re-entry
Atmospheric re-entry is the most challenging part of human space flight. In the re-entry phase of flight, the crew module (or re-entry vehicle) is required to bring the onboard astronauts from orbital velocities, which ... -
Numerical Studies on the Effect of Core Metal Type and Thickness on the Mechanical Behaviour of Fiber Metal Laminates
Fiber Metal Laminates are advanced materials that combine the properties of metals with Fiber Reinforced Plastics to attain enhanced mechanical performance. The desired mechanical properties can be achieved by hybridizing ... -
Effect of Laser Shock Peening on Residual Stress and Mechanical behaviour of Aluminium alloy AA2219 Friction Stir Weld
The Aluminium alloy AA2219 is a precipitation-hardenable wrought alloy with copper as the major alloying element. Large-volume propellant tanks of space launch vehicles are manufactured by joining AA2219 alloy through ... -
Experimental Study of Isolator Shock Trains in Confined Co-flowing Supersonic Streams
Futuristic high Mach number flight systems using advanced air-breathing propulsion technologies typically have multiple flow paths with supersonic flows that merge before exiting the vehicle. The supersonic-supersonic ... -
Transonic Shock Buffet in an Axial Flow Fan
Transonic shock buffet, a self-sustained shock oscillation resulting from shock-boundary layer interaction, is observed across a range of operating points on the performance map of a transonic axial flow fan. Shock ... -
Multiscale modelling and design of multifunctional composites for microwave absorption applications
Microwave absorption materials (MAMs) are crucial for both long-standing aeronautical and emerging space security applications, with carbon-based materials traditionally dominating the field due to their exceptional strength ...