| 航天器姿控发动机真空羽流场计算及其扰动分析 |
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| 引用本文： | 史纪鑫. 航天器姿控发动机真空羽流场计算及其扰动分析[J]. 航天器环境工程, 2011, 28(5): 431-435. |
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| 作者姓名： | 史纪鑫 |
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| 作者单位： | 1.北京空间飞行器总体设计部 |
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| 摘 要： | 航天器姿态控制发动机工作期间，产生的羽流扰动力矩会影响控制精度，对流和辐射产生的热效应会影响热控系统工作，羽流沉积物会影响光学敏感器的精度。文章以某航天器的20 N姿控发动机为例，首先采用工程的MOC方法计算其真空羽流场；然后利用建立的航天器羽流三维冲击模型分析了羽流对太阳电池阵的冲击载荷；最后对发动机羽流脉冲激励下太阳电池阵的响应和姿态控制系统受到的扰动力矩进行了仿真分析。结果表明姿控发动机羽流脉冲激励将对控制精度和稳定度产生不可忽视的影响。
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| 关 键 词： | 航天器；真空羽流；冲击载荷；扰动分析 |
| 收稿时间： | 2011-07-26 |
| 修稿时间： | 2011-08-22 |
Plume field and its perturbation analysis of a spacecraft attitude control thruster |
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| Shi Yixin. Plume field and its perturbation analysis of a spacecraft attitude control thruster[J]. Spacecraft Environment Engineering, 2011, 28(5): 431-435. |
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| Authors: | Shi Yixin |
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| Affiliation: | 1. Beijing Institute of Spacecraft System Engineering |
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| Abstract: | The exhaust plume of attitude control thrusters may have various detrimental effects on spacecraft subsystems.The generated additional torques may reduce the attitude control precision.The convective and radiative heat exchanges by the plume may disturb the operation of the thermal control system.Contamination due to the plume would affect the performance of sensitive components such as optic sensors.In this paper,the vacuum plume field is numerically simulated by the MOC method of a 20 N thruster firstly.T... |
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| Keywords: | spacecrafts vacuum plume impact load perturbation analysis |
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