论文部分内容阅读
超声速稳定伞能有效避免飞船返回舱姿态不确定性引起的主降落伞系统开伞故障,在多用途飞船缩比返回舱的再入过程中得到了应用。相比于亚声速开伞过程,稳定伞超声速开伞时会遇到强烈的气动加热问题。文章采用流固耦合方法模拟稳定伞超声速时充气的动态过程,利用气动热数值仿真方法对稳定伞在超声速段的气动加热情况开展研究,确定典型弹道下的伞船系统的流场环境以及稳定伞面热流、温度分布。该数值研究方法可为中国返回式航天器再入返回过程中的超声速稳定伞设计提供参考。
Supersonic stabilizing umbrella can effectively avoid the main parachute system parachute failure caused by the attitude uncertainty of the spacecraft’s return capsule and is applied in the reentry process of the multipurpose spacecraft reduction ratio return capsule. Compared to the sub-sonic parachute process, stable umbrella ultrasonic parachute will encounter a strong problem of aerodynamic heating. In this paper, the dynamic process of the supersonic inflation of the stabilized umbrella is simulated by using the fluid-solid coupling method. The aerodynamic heating of the stabilized umbrella in the supersonic velocity stage is studied by means of the aerodynamic numerical simulation. The flow field environment and the stability of umbrella Surface heat flow, temperature distribution. The numerical method can provide a reference for the design of supersonic stability umbrellas during the return and return of China’s spacecraft.