Aerospace Engineering (AE): Recent submissions
Now showing items 181-200 of 426
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A Ghost Fluid Method for Modelling Liquid Jet Atomization
(2018-05-21)Liquid jet atomisation has a wide variety of application in areas such as injectors in automobile and launch vehicle combustors, spray painting, ink jet printing etc. Understanding physical mechanisms involved in the primary ... -
Analysis of Unsteady Incompressible Potential Flow Over a Swimming Slender Fish and a Swept Wing Tail
(2018-05-16)This thesis deals with computing the pressure distribution around a swimming slender fish and the thrust generated by its flapping motion. The body of the fish is modeled as a missile like slender body to which a tail is ... -
Vision-based Strategies for Landing of Fixed Wing Unmanned Aerial Vehicles
(2018-05-14)Vision-based conventional landing of a fixed wing UAV is addressed in this thesis. The work includes mathematical modeling, interface to a software for rendering the outside scenery, image processing techniques, control law ... -
Hybird Central Solvers for Hyperbolic Conservation Laws
(2018-05-11)The hyperbolic conservation laws model the phenomena of nonlinear waves including discontinuities. The coupled nonlinear equations representing such conservation laws may lead to discontinuous solutions even for smooth ... -
Structural Modeling and Damage Detection in a Non-Deterministic Framework
(2018-05-08)Composite structures are extremely useful for aerospace, automotive, marine and civil applications due to their very high specific structural properties. These structures are subjected to severe dynamic loading in their ... -
Three Dimensional Computational Fluid Dynamic Simulation and Analysis of a Turbocharger Compressor
(2018-05-01)This thesis constitutes detailed computational investigation on ow through the passages of a centrifugal compressor used for turbocharging applications. Given the dynamic nature of operation of the turbocharger, it becomes ... -
Accurate and Efficient Algorithms for Star Sensor Based Micro-Satellite Attitude and Attitude Rate Estimation
(2018-04-18)This dissertation addresses novel techniques in determining gyroless micro-satellite attitude and attitude rate. The main objective of this thesis is to explore the possibility of using commercially available low cost ... -
Analysis and Detection of Ionospheric Depletions over the Indian Region in the Context of Satellite Navigation
(2018-04-18)Satellites have revolutionized navigation by making it more universal, accessible and ac- curate. Global Positioning System (GPS) is the most widely used satellite navigation system in the world. However, it is prone to ... -
Shock Tunnel Investigations on Hypersonic Impinging Shock Wave Boundary Layer Interaction
(2018-04-13)The interaction of a shock wave and boundary layer often occurs in high speed flows. For sufficiently strong shock strengths the boundary layer separates, generating shock patterns in the contiguous inviscid flow (termed ... -
Experimental Investigations on Supersonic Ejectors
(2018-04-13)A supersonic ejector is used to pump a secondary gas using a supersonic primary gas flow by augmentation of momentum and energy in a variable area duct. The internal compressible flow through an ejector has many complex ... -
A Computational Study of Structural and Thermo-Mechanical Behavior of Metallic Nanowires
(2018-04-11)This thesis is an attempt to understand ways to improve thermo-mechanical and structural properties of nano-structured materials. A detailed study on computational design and analysis of metallic nanowires is carried out. ... -
Optimal Trajectory Planning for Fixed-Wing Miniature Air Vehicles
(2018-04-02)Applications such as urban surveillance, search and rescue, agricultural applications, military applications, etc., require miniature air vehicles (MAVs) to fly for a long time. But they have restricted flight duration due ... -
Compressible Mixing of Dissimilar Gases
(2018-03-22)This thesis is concerned with the study of parallel mixing of two dissimilar gases under compressible conditions in the confined environment. A number of numerical studies are reported in the literature for the compressible ... -
Investigation of Plug Nozzle Flow Field
(2018-03-21)Plug nozzle, a passive altitude adaptive nozzle, for futuristic SSTO applications, exhibits greater efficiency as compared to conventional nozzles over a wide range of altitudes. The plug nozzle comprises of a primary nozzle ... -
Experiments on the Late Stages of Boundary Layer Transition
(2018-03-19)In canonical boundary layer transition, a uniform laminar flow perturbed by 2-d T-S waves develops downstream into 3-d waves, which eventually break down with turbulent spots appearing. Previous experimental studies have ... -
Linear Stability Models for Reacting Mixing Layers
(2018-03-12)We develop a physics-based reduced-order model of the aero-acoustic sound sources in reacting mixing layers as a method for fast and accurate predictions of the radiated sound. Instabilities in low-speed mixing layers are ... -
Influence of Chemical Coating on Droplet Impact Dynamics
(2018-03-09)Dynamic behavior of impacting water drops on superhydrophobic solid surfaces provides important details on the stability/durability of such solid surfaces. Multi-scale surface roughness combined with a layer of low energy ... -
Lattice Boltzmann Relaxation Scheme for Compressible Flows
(2018-03-09)Lattice Boltzmann Method has been quite successful for incompressible flows. Its extension for compressible (especially supersonic and hypersonic) flows has attracted lot of attention in recent time. There have been ... -
Wave Propagation in Healthy and Defective Composite Structures under Deterministic and Non-Deterministic Framework
(2018-03-08)Composite structures provide opportunities for weight reduction, material tailoring and integrating control surfaces with embedded transducers, which are not possible in conventional metallic structures. As a result there ... -
Some Experimental and Numerical Studies on Evaluation of Adhesive Bond Integrity of Composites Lap Shear Joints
(2018-03-02)Adhesive bonding which has been in use for long as a traditional joining method has gained ground in the last couple of decades due to the introduction of advanced composite materials into the aerospace industry. Bonded ...