CSTS返回舱气动布局研究

Aerodynamics configuration study for CSTS reentry capsule

乘员空间运输系统CSTS是欧洲正在研发的可执行近地轨道和月球轨道任务的下一代载人航天器。以CSTS返回舱为研究对象,采用正交试验设计思想,布置四因素三水平的正交数值试验,分析返回舱外形的主要几何参数对气动性能的影响规律,优选具有最大升阻比的气动外形。基于优选的外形,讨论质心位置配置对配平升阻比、静稳定性的影响规律,并分析气动性能对质心位置的敏感性,给出CSTS返回舱气动布局设计建议。

The Crew Space Transportation System （CSTS）is a proposed next generation manned explo-ration vehicle which will transport crew both to the ISS in Low Earth Orbit,and to Low Lunar Orbit.In this paper,orthogonal numerical experiment with four factors and three levels was arranged,using the orthogo-nal experimental design method.The influence of geometric parameters on the aerodynamic characteristics was discussed,aiming at finding the configuration with the highest L/D value.After selecting the configura-tion,the trim L/D line was found out for the required L/D .The placement of the center of gravity on the trimline which affects the pitch static stability and the aerodynamic sensitivity to the placement was investi-gated for better aerodynamic perfermance.