振动飞行试验数据归纳方法研究

Study on the induction method of vibration flight test data

在飞机飞行试验中,空勤人员位置处的振动水平是一项重要考核指标。空勤人员位置处振动水平的高低直接影响空勤人员的工效性。本文介绍了一种空勤人员位置处的三分之一倍频程振动谱的常规归纳方法,并提出了另一种归纳方法。该方法可以同时得到功率谱密度归纳谱和三分之一倍频程归纳谱,并能保留对振动排故试飞很重要的频率细节。该方法有助于推进飞机试飞工作。通过结果对比,表明了该方法正确合理。

The vibration level of the place where the flight crews are working is a very important index in flight test.The task performance of the fight crews is directly affected by the vibration level of the place where the flight crews are working.A normal induction method and a new induction method of one-third octave spectrum are introduced in this paper.This new method can provide both power spectral density induction spectrum and one-third octave induction spectrum,and preserve the frequency details,which are very important to vibration troubleshooting flight test.The new induction method is conductive to advance the flight test work.The validity and reasonability of the new induction method have been proved through comparison of the results.