大气进入
空气动力学
再入
弹道
扭矩
航空航天工程
重心
攻角
参数统计
大气模式
控制理论(社会学)
计算机科学
模拟
环境科学
工程类
气象学
物理
数学
控制(管理)
天文
管理
心脏病学
经济
人工智能
统计
热力学
医学
作者
J. C. Olsen,Robert L. Bettinger
摘要
The safe return of the Apollo 10 Command Module was well-documented and provides historical data of a real world atmospheric reentry. A 6 degree-of-freedom (6DOF) simulation is developed to recreate the Apollo 10 reentry trajectory for analysis and discussion. The 6DOF simulation environment includes translational and rotational governing equations with accompanying planetary, atmospheric, heat flux, deceleration and aerodynamic torque and force models. A parametric study is conducted by varying the center-of-gravity (CG) location within the capsule along the longitudinal and vertical axis to determine the capsule’s attitude trim characteristics. A quaternion feedback controller is employed to recreate the commanded bank profile designed to mitigate peak heat and deceleration loads and to better target the desired landing location. Simulation results are compared with available NASA historic data and model errors and potential error sources are discussed.
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