Browsing Aerospace Engineering (AE) by Subject "Astronautics"
Now showing items 1-20 of 20
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Autonomous Landing Of Unmanned Aerial Vehicles
(2010-03-26)In this thesis the problem of autonomous landing of an unmanned aerial vehicle named AE-2 is addressed. The guidance and control technique is developed and demonstrated through numerical simulation results. The complete ... -
Autonomous Navigation Using Global Positioning System
(2011-04-29) -
Autonomous Orbit Estimation For Near Earth Satellites Using Horizon Scanners
(Indian Institute of Science, 2005-10-20)Autonomous navigation is the determination of satellites position and velocity vectors onboard the satellite, using the measurements available onboard. The orbital information of a satellite needs to be obtained to support ... -
Breakup Behaviour Of Liquid Sheets Discharging From Gas Centered Swirl Coaxial Atomizers
(2011-04-06)This thesis aims at studying the breakup of swirling liquid sheets discharging from the outer orifice of gas centered swirl coaxial atomizers. Such atomizers are considered as propellant injection systems for semi-cryogenic ... -
Collision Avoidance And Coalition Formation Of Multiple Unmanned Aerial Vechicles In High Density Traffic Environments
(2014-08-07)This thesis addresses the problems of collision avoidance and coalition formation of multiple UAVs in high density traffic environments, proposes simple and efficient algorithms as solutions, and discusses their applications ... -
Development Of Gyroless Attitude And Angular Rate Estimation For Satellites
(2011-04-06)Studies aimed at the development of indigenous low cost star tracker and gyroless attitude and angular rate estimation is presented in the thesis. This study is required for the realization of low cost micro satellites. A ... -
Dynamic Response Of A Satellite With Flexible Appendages And Its Passive Control
(2010-11-25)Most present day spacecrafts have large interconnected solar panels. The dynamic behavior of the spacecraft in orbit can be modeled as a free rigid mass with flexible elements attached to it. The natural frequencies of ... -
Dynamics And Stability Of A Launch Vehicle
(2011-07-08)Stability is an important criterion in the design and performance of launch vehicles. Present day launch vehicles have become more and more flexible due to the constraints of weight reduction, necessarily imposed for ... -
Improved Solution Techniques For Trajectory Optimization With Application To A RLV-Demonstrator Mission
(2009-03-12)Solutions to trajectory optimization problems are carried out by the direct and indirect methods. Under broad heading of these methods, numerous algorithms such as collocation, direct, indirect and multiple shooting methods ... -
An Investigation of Architectures For Integration Of Stand-Alone INS And GPS Navigation Systems
(2009-07-08)Inertial navigation systems (INSs) have the well-known advantages of being self-contained, weatherproof, jam-proof, and non-self-revealing while providing stable navigation information with little high-frequency noise. ... -
Kalman Filter Estimation Of Ionospheric TEC And Differential Instrumental Biases Over Low Latitude Using Dual Frequency GPS Observations
(2009-03-13)The low latitude tropical ionosphere has been investigated by various researchers using Global Positioning System (GPS). Presently for many civil aviation applications, the ionospheric modeling of the tropical region has ... -
Onboard Propellant Gauging For Spacecraft
(2009-08-04)Estimation of the total mission life of a spacecraft is an important issue for the communication satellite industries. For accurate determination of the remaining mission life of the satellite it is essential to estimate ... -
Optimal Guidance Of Aerospace Vehicles Using Generalized MPSP With Advanced Control Of Supersonic Air-Breathing Engines
(2016-07-11)A new suboptimal guidance law design approach for aerospace vehicles is proposed in this thesis, followed by an advanced control design for supersonic air-breathing engines. The guidance law is designed using the newly ... -
Search Strategies For Multiple Autonomous Agents
(2011-10-13) -
Time Scale Separated Nonlinear Partial Integrated Guidance And Control Of Endo-Atmospheric Interceptors
(2011-03-17)To address the concern of classical guidance and control designs (where guidance and control loops are designed separately in an “outer loop – inner loop” structure), integrated guidance and control (IGC) ideas have been ...