重复使用火箭垂直回收任务弹道分析

Trajectory Analysis on Vertical-recovery Missions of Reusable Launch Vehicle

对SpaceX公司法尔肯重复使用火箭历次成功的子级垂直回收及复用任务进行梳理,基于有限的飞行数据,推算一子级飞行的关键弹道参数,包括弹道倾角、飞行动压和过载等,并利用这些参数来分析一子级在再入飞行中的气动环境及其对箭体回收和重复使用的影响。相关分析结果可以为中国未来火箭垂直回收和重复使用技术的研究提供参考。

Successful vertical-landing and reuse missions of SpaceX’s Falcon rockets are listed in this paper,and based on the rockets’limited flight data broadcasted,some key trajectory parameters are deduced,including flight-path angle,dynamic pressure and overload.These parameters are used to analyze aerodynamic environment of first stage during reentry flight and its influences on rocket recovery and reuse.The analysis results would provide a reference for research on vertical-recovery and reuse technology of China’s launch vehicle in the future.