超低轨道空间飞行器气动阻力预测方法
By introducing a side drag correction term and the DSMC method into the aerodynamic drag prediction model, the problem of low prediction accuracy in the prior art is solved, and the rapid and accurate prediction of aerodynamic drag of ultra-low orbit vehicles is realized, improving prediction accuracy and efficiency.
CN116776767BActive Publication Date: 2026-07-17SOUTHEAST UNIV +1
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SOUTHEAST UNIV
- Filing Date
- 2023-06-02
- Publication Date
- 2026-07-17
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Figure CN116776767B_ABST
Abstract
本发明涉及一种超低轨道空间飞行器气动阻力预测方法，包括：建立考虑侧面阻力影响的气动阻力预测模型，模型中气动阻力系数由正向迎风面阻力系数和侧面阻力修正项构成；对常用构型飞行器在特定来流工况下的气动阻力进行数值模拟计算，获得气动阻力系数及飞行器侧面积与正向迎风面积之比，并对两者进行线性拟合，获得侧面阻力修正系数和正向迎风面阻力系数；计算目标飞行器的表面积，根据其运行的轨道高度选取来流工况，结合求解的所述正向迎风面阻力系数及所述侧面阻力修正系数，代入所述气动阻力预测模型中，求解获得来流工况下目标飞行器在轨道上所受的气动阻力。本发明极大地提高了超低轨道飞行器气动阻力预测的精度和效率。
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