摘要
针对再入机动飞行器的再入段轨迹规划问题,设计了基于速度-阻力加速度剖面的轨迹优化方法,推导了根据速度-阻力加速度曲线和速度-攻角曲线计算飞行器跟踪规划轨迹所需要的控制力、航迹倾角、飞行器高度等量的公式,给出了飞行器再入倾角和速度-阻力加速度曲线斜率的关系,提出了一种考虑飞行器控制能力极限的基于椭球近似解析法的飞行器再入段轨迹优化方法,通过仿真验证了所提出方法的有效性。
A trajectory optimization method based on velocity-drag profile is designed for reentry flight vehicle entry trajectory planning.The equations for calculating the control force,flight-path angle and the altitude of the flight vehicle are given based on the velocity-drag profile and the velocity-angle of attack profile.The relationship between entry angle and the slope of velocity-drag profile is deduced.An entry trajectory optimization method based on approximate ellipsoid analysis method by considering the limit of control capability of flight vehicle is proposed.The proposed method is effective by verification through simulations.
作者
张凯
杨小龙
钟震
Zhang Kai;Yang Xiaolong;Zhong Zhen(Beijing Institute of Astronautical Systems Engineering,Beijing 100076,China)
出处
《航天控制》
CSCD
北大核心
2021年第5期8-15,共8页
Aerospace Control
关键词
速度-阻力加速度曲线
再入倾角约束
轨迹优化
椭球近似解析法
Velocity-drag profile
Entry angle constraint
Trajectory optimization
Approximate ellipsoid analysis method
