环境因子在机载电子信息系统试飞试验可靠性评估的应用

Application of Environment Factor In Electronic Information System Flight-test Reliability Evaluation

机载电子信息系统在外场试飞试验中受到空中和地面两种不同的环境应力,针对以前可靠性评估中没有引入环境因子的问题,依据相关文献,给出了环境因子的工程计算方法;利用已有的外场试飞试验数据,对该电子信息系统外场试飞试验的环境因子进行了确定,并对环境因子应用于可靠性评估前后的结果进行了比较,表明在可靠性评估中引入环境因子,可以节省试验时间。

Electronic Information System suffers from two different environment stress in flight test, which are flight environment stress and ground environment stress. Considering that environment factor has not been ap- plied in former reliability evaluation. Awarding to correlative literatures, engineer calculate method of environment factor is given, environment factor of electronic information system flight-test by using of existing flight-test data is ascertained, and reliability evaluation results according to environment factors before and after the evaluation are contrasted. Result shows that environment factor applied to reliability evaluation may save test time.