AOTV的极小时间控制

MINIMUM-TIME CONTROL OF AEROASSISTED ORBITAL TRANSFER VEHICLE

This paper considers the minimum-time control of aeroassisted orbital transfer vehicle (AOTV) which arises in the study of coplanar HEO-LEO orbital transfer. The open-loop optimal control law is derived by means of Pontriagin's maximum principle. An example that AOTV transfers from geosynchronistic orbit to coplanar 500 kilemeters high circular orbit is siumlated in which atmosphere density is based on the US. 62 Standard Atmosphere. The simulation result shows that the charactcristic velocity change required by aeroassisted orbita. transfer is only 43.8 % of that required by Hohmann transfer. The controlled flight time is about 20 minutes.