北京工业职业技术学院学报

深空环境下，载人航天器热管理系统主要依靠泵驱单相流体回路实现热量收集、转移与排散，其辐射器故障直接影响系统热安全性。针对辐射器工质泄漏、表面蒙尘、表面损伤等典型故障，提出两级递进式安全控制策略，量化故障模式下辐射器散热性能衰减与温控阀流量响应的动态关联特性。研究表明：当辐射器有效散热面积下降30%时，优先实施控温点温度提升策略，可使系统恢复热平衡。该分层控制策略为航天器故障容错设计提供了理论支撑与工程实施路径。

In the deep space environment, the thermal management system of manned spacecraft mainly relies on a pump-driven single-phase fluid circuit to achieve heat collection, transfer, and dissipation. Radiator failures directly threaten the system's thermal safety. A two-stage progressive safety control strategy is proposed to address typical faults such as refrigerant leakage, surface dust, and surface damage in radiators, quantifying the dynamic correlation between radiator heat dissipation performance degradation and temperature control valve flow response under fault conditions. Research has shown that when the effective heat dissipation area of the radiator decreases by 30%, prioritizing the implementation of temperature control point temperature increase strategy can restore thermal balance to the system. This hierarchical control strategy provides theoretical support and engineering implementation path for spacecraft fault tolerance design.