适应瞬态高温过载环境的加载装置设计及试验研究

目的地面模拟飞行器再入过程瞬态热-离心环境,预测部组件结构响应,开展典型试验件高过载环境瞬态高温加载装置设计技术及试验研究。方法通过优化石英灯结构强度和生产工艺,改进灯阵夹具和石英灯夹持方式,解决高过载离心环境(80g)石英灯强度和夹具夹持位置灯管易碎问题。结果利用自行研制的适用于高过载环境下瞬态加热装置,对典型试验件进行了高过载高温加载试验,实现了最高温度为600℃,最大加速度为80g的技术指标。结论该研究成果可用于相关飞行器及其部组件地面热-离心复合环境等效性试验考核。

The Design of Overloaded Transient Thermal Testing Apparatus to Simulate Re-entry Heating and Testing Techniques

To simulate transient thermal environment during aerocraft reentry,research on the transient heating device under centrifugal and overload condition for some representative samples is conducted.Given quartz lamps are non-durable,fragile and easily broken when used under overload condition,this study proposes structural strengthening,manufacturing techniques improvement and the changing of the clamping method.A transient thermal test using a transient heating device developed by our own group is conducted on a representative sample under overload condition,accomplishing the goal of raising the highest temperature to 600℃and the workload to 80g.The aerocraft’s ground thermal testing under centrifugal condition can be done by this device and test method.