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Reusable launch vehicle (RLV) is a goal pursued by different aerospace agencies, world-wide. Indian space research organization is also one among them. This paper covers the challenges faced and the solutions developed for control law design of a typical re-entry vehicle. The first stage of the test vehicle, used for technology demonstration mission, is a conventional solid rocket motor. The second...
Determination of 3-D data from the images is important in the field of machine vision. The most direct way to achieve this is stereo vision. 3-D data obtained from stereo images form the basis for many higher level tasks like robot navigation, object recognition, 3-D modeling, path planning etc. in the field of interplanetary mission, hazardous environments, deep sea exploration, autonomous car driving...
Initial entry phase of all the winged body vehicles, encounter ballistic flight in the absence of aerodynamic forces in rare atmosphere at high re-entry altitude. Lifting vehicles enter the atmosphere at high angle of attack to increase the drag to reduce the orbital velocity and to increase the lift to balance the weight for equilibrium glide flight. Ineffectiveness of rudder makes the control law...
Due to the inherent nonlinearities of Reusable Launch Vehicle (RLV) dynamics, its changing properties during flight and the engineering difficulties to predict its aerodynamics with high levels of fidelity, flight control requires strategies that allow to cope up with the non-linearity of the model and assure robustness in the presence of inaccuracies and changes in configuration. This paper presents...
In this paper a nonlinear optimal controller has been designed for aerodynamic control during the reentry phase of the reusable launch vehicle (RLV). The controller has been designed based on a recently developed technique optimal dynamic inversion (ODI). For full state feedback the controller has required full information about the system states. In this work an extended Kalman filter (EKF) is developed...
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