敞口式舱内设备热防护分析设计与研究

Design and Research on Thermal Protection of Equipment in Open Cabin

针对飞行器在热分离过程中及分离后飞行的恶劣热环境条件下,提出了敞口式舱内设备热防护设计方法。通过对设备进行穿戴式结构设计获取各种异型设备的通用化设计方法,针对接触面的热量转移问题提出面积热阻计算公式,有效解决了非金属材料的热环境适应性问题,根据地面石英灯考核试验获得了设备的热防护效果,并基于此开展了与传统热防护材料的性能比对分析工作。分析计算结果表明:敞口式舱内设备热防护设计合理可行,满足分离过程及分离后飞行试验热环境要求,有效保护了设备,为飞行器的可靠工作奠定了坚实基础。

Aiming at the severe thermal environment during and after thermal separation of aircraft,a design method for thermal protection of equipment in open cabins is proposed.Through the wearable structure design of the devices is obtained.The area thermal resistance calculation formula is proposed for the heat transfer problem of the contact surface,which effectively solves the problem of the thermal environment adaptability of non-metallic materials,according to the ground quartz the lamp evaluation test obtained the thermal protection effect of the equipment,and based on this the performance comparison analysis work with the traditional thermal protection material is carried out.The analysis and calculation results show that the thermal protection design of the equipment in open cabin is reasonable and feasible,which meets the thermal environment requirements of separation process and post separation flight test.The method protects the equipment effectively,and lays a solid foundation for the reliable work of the aircraft.