航天飞机考虑意外损伤时防热系统的健康管理研究

CONSIDERED ACCIDENT DAMAGE THE HEALTH MANAGEMENT FOR THERMAL PROTECTION SYSTEM OF SPACE SHUTTLE

防热系统健康管理是航天飞行器的关键技术之一。文中提出通过监测防热系统的关键性能指标,分析评估系统状态的航天飞机防热系统健康管理方法,论述航天飞机防热系统健康管理的概念和健康监测的原理,从考虑意外损伤的角度探讨防热系统健康监控的有关问题。利用ANSYS软件模拟遭受不同程度损伤的防热瓦在再入过程中的温度分布情况,并进行比较分析与讨论,论证方法的可行性。

Health management for thermal protection system （TPS） is one of the key technologies for space vehicle. The paper puts forward a method that analyze and valuation the system states by monitoring the key function index sign of TPS. The concept of health management for thermal protection system of space shuttle and the principles of health monitoring are introduced. Combine to inquiry into the Mevant problem of the health management from the angle of consider the accident damage. Make use of the ANSYS software to simulate and analyze the temperature distribute of thermal protection tile suffered of teentry space shuttle damaged by different degree, demonstrate the feasibility of the method.