细长旋成体腔内下落两自由度建模分析  

Modeling of Two-degree-of-freedom Trajectory Equation of a Thin Body of Revolution from Cavities

作　　者：梁磊 杨学军 LIANG Lei;YANG Xuejun(Beijing Institute of Astronautical Systems Engineering,Beijing,100076)

机构地区：[1]北京宇航系统工程研究所,北京100076

出　　处：《导弹与航天运载技术（中英文）》2023年第5期38-41,共4页Missiles and Space Vehicles

摘　　要：腔室内流动现象复杂,为了掌握重力下落过程中物体在流场中的运动规律,通过建模求解关于质心和俯仰角的两自由度轨迹方程,近似地给出了细长体在腔内外运动轨迹与典型参数的显性关系。解析结果简化了细长体轨迹计算,可用于对质心和俯仰角轨迹进行快速预示。通过与亚声速物体下落试验数据比较,计算与试验数据一致性较好,验证了解析结果。The flow phenomenon in cavity is very complicated,theoretical research of the motion of the thin body is focused on.Solving two-degree-of-freedom equations,explicit dependencies of the trajectory on the governing parameter are given.The analytical results dramatically simplify body trajectory calculation,thus quick prediction for thin body of revolution motion is provided.Numerical results are verified by comparisons with the experimental data obtained for subsonic store separation.The calculations are mostly in a good agreement with the data.

关 键 词：自由下落 势流 轨迹 腔室 

分 类 号：V411.1[航空宇航科学与技术—航空宇航推进理论与工程]