Reentry Guidance for Hypersonic Vehicle Considering No-Fly Zone

Hypersonic vehicles are subject to various constraints during the reentry flight process. Methods only consider the constraints of flight process and terminal states are difficult to meet the increasingly complex requirements of the flight environment. In this paper, hypersonic vehicle is used as the study object to construct a simplified horizontal plane model to analyze the existence of no-fly zone in the flight process. Optimal avoidance strategy is founded and the constraints inequality are converted into the constraints of equality so as to avoid no-fly zone and complete the design of the reentry guidance. Through a lot of simulation, it shows that the algorithm has good adaptability to the different targets and different no-fly zones.