Six-DOF Modeling and Simulation for Generic Hypersonic Vehicle in Reentry Phase

The purpose of this research is to model a hypersonic vehicle in the pull-up phase and provide an insight into the inherent dynamics. Based on Newtonian mechanics, the theoretical flight dynamic model of the pull-up phase of reentry motion is established; Based on MATLAB/SIMULINK, simulation model for reentry hypersonic vehicle was modeled. Lifting body hypersonic vehicle aerodynamic data is obtained by high-accuracy CFD code which copyright by CAAA. We adopted feedback linearization control theory, pitching angle holding control laws in order to keep maximum lift-drag ratio glider, the six degree of freedom (DOF) simulation validate the control law. The simulation results show some hypersonic flight characteristics, including static unstable, earth radius and rotationeffects and high-coupledcharacteristics. The simulation model and results provide a useful reference for a hypersonic vehicle's dynamics analysis, control law design and overall design.