飞机环境振动状态-时间谱的编制与应用

 飞机环境振动状态-时间谱是飞机的一种重要的统计参数。它是运用状态归纳法进行环境振动数据归纳所必不可少的先知条件。本文提出了飞机环境振动状态-时间谱的一个编制方法。该法建立在大量飞行统计数据的基础上,并全面考虑了空中飞行和地面试车两种情况。由此编制出来的飞机环境振动状态-时间谱能较真实地反映飞机实际使用的情况。这个编制方法已用于工程实践中。

COMPILATION AND APPLICATION OF A STATE-TIME SPECTRUM OF AIRCRAFT AMBIENT VIBRATION

A state-time spectrum of aircraft ambient vibration is an important statistical parameter of an aircraft. It is an essential precondition for inducing ambient vibration data of an aircraft with the state inductive method.This paper puts forward a compiling method of the state-time spectrum of aircraft ambient vibration. It is based on a great deal of statistical data taking both flight and ground tests into comprehensive consideration. Therefore. the state-lime spectrum of aircraft ambient vibration drawn up by this method can give true expression oi the aircraft practice.This method has found engineering application.