基于任务剖面的机载外挂温度试验条件探讨

目的获取一种合理的温度试验条件用以考核机载外挂对温度环境的适应性。方法针对影响机载外挂温度的自然或诱发环境因素,分别分析自然环境、气动加热以及设备工作发热的三种典型因素的不同特点,并结合机载外挂的空中挂飞使用状态,给出相应的温度计算方法。结果通过对某载机的典型任务剖面的计算,指出了现有机载外挂基于地面使用温度制定的试验条件无法完全覆盖空中挂飞时的温度环境,并由此提出了基于任务剖面的温度试验条件,以更好地考核机载外挂温度环境适应性。结论给出了一种用于考核机载外挂温度环境适应性的温度试验条件及其计算方法。

Conditions for Temperature Test of Aircraft Store based on Mission Profile

Objective To obtain a reasonable temperature test condition to evaluate the temperature environment adap-tability of airborne store.Methods Environmental factors, which influence airborne store's temperature such as natural environment, aerodynamic heating and equipment working heating, were analyzed on their different features. The calcu-lation method, which is related to aircraft's flight conditions, was given.Results According to typical mission profile of an aircraft, the temperature profile is calculated. Based on the temperature profile, the ground temperature can't cover the temperature of flight, thus a temperature test method based on mission profile was given to evaluate the temperature en-vironment adaptability of airborne stores better. Conclusion Reasonable test conditions and calculation methods for air-borne store's temperature test are given.