3-D Reentry Guidance with Real-Time Planning of Reference using New Analytical Solutions Based on Spectral Decomposition Method

A Common Aero Vehicle (CAV) [1] is a hypersonic gliding vehicle that is boosted to the speed of about Mach 20 by a launch vehicle and reenters the atmosphere without power. The flight of CAV can be roughly divided into two phases: the entry and terminal guidance phases. The entry phase starts shortly after the CAV is separated from the launch vehicle and ends at a specified distance from the target. In the entry phase, the CAV performs lateral maneuvers under the heating rate, dynamic pressure and load factor constraints to manage its energy. In the terminal guidance phase, the CAV attacks the ground target from a near-vertical orientation. In this paper, we study the guidance problem in the entry phase.