A Sinking Trajectory Planning Method For Reentry Vehicle Under Strict Constraints

This paper studies a three degree of freedom sinking trajectory design generation method for reentry vehicles considering multiple constraints. Within the range of the reentry aircraft, in accordance with the constraints of the terminal range, terminal height, terminal ballistic inclination angle, and terminal velocity of the designated flight mission, the control variables are solved in reverse according to the aircraft and the lift and drag profile. The angle of attack and angle of inclination profile are then obtained to meet the attitude and velocity reference reentry trajectory, and the planning profile is tracked by the method of feed forward and feedback control. A large number of simulation calculations show that the trajectory design method in this paper can quickly generate a reentry trajectory that satisfies a variety of constraints, and has strong effectiveness, robustness, feasibility.