高超声速稀薄流单层翼伞气动性能及再入轨迹分析  

Aerodynamic performance and reentry trajectory analysis of single-skinned parawing in hypersonic rarefied flow

作　　者：郭建 张帅 GUO Jian;ZHANG Shuai(School of Aerospace Engineering,Beijing Institute of Technology,Beijing 100081,China;Beijing Aerospace Technology Institute,Beijing 100074,China)

机构地区：[1]北京理工大学宇航学院,北京100081 [2]北京空天技术研究所,北京100074

出　　处：《飞行力学》2021年第3期60-67,共8页Flight Dynamics

摘　　要：针对航天器返回过程中严重的气动加热和过载问题,提出了一种适用于整个返回过程的单层翼伞技术,从而实现温和的再入过程。采用直接模拟蒙特卡罗(DSMC)方法,对单层翼伞周围流场进行三维定常模拟,讨论了其作为低翼载荷升力体气动减速器,在再入初始阶段高超声速稀薄流条件下的基本气动性能和再入轨迹。研究结果表明:随着前缘后掠角的增大,翼伞气动性能明显下降,但抗失速能力有所提高;升阻比随着马赫数和飞行高度的增加而下降,较之马赫数,升阻比对飞行高度更为敏感;飞行动压和峰值热流随着翼载荷的增大而增加,而过载随着翼载荷的增大而减小。Aiming at severe aerodynamic heating and overload during the spacecraft returning process,a single-skinned parawing technology suitable for the whole return process was proposed to realize mild reentry.The three-dimensional steady flow field around the single-skinned parawing was simulated via DSMC method,and its basic aerodynamic performance and reentry trajectory under the hypersonic rarefied flow condition at the initial stage of reentry were discussed as a low wing load lifting body decelerator.The research results show that the aerodynamic performance of the parawing decreased with the increase of the leading edge sweep angle,but the anti-stall capability was improved.The lift-drag ratio decreased with the increase of the Mach number and the flight altitude,and the lift-drag ratio was more sensitive to flight altitude than to Mach number.With the increase of the wing load,the dynamic pressure and peak heat flux increased,but the overload decreased.

关 键 词：单层翼伞 高超声速稀薄流 气动性能 再入轨迹 

分 类 号：V41[航空宇航科学与技术—航空宇航推进理论与工程]