飞机主操纵系统疲劳试验载荷谱小操纵位移频次问题研究

Study of the Number of Small Control Displacement Test Cycles in Fatigue Test Load Spectrum for Primary Flight Control System

针对飞机全机主操纵系统疲劳试验载荷谱中小操纵位移频次影响问题进行了分析和讨论,确定了某机全机主操纵系统小操纵位移频次的级别。同时,在原某机全机主操纵系统疲劳试验载荷谱的基础上再次对其小操纵位移频次进行了计算,去掉了这一级别以下对全机主操纵系统疲劳试验无影响的小操纵位移频次,从而完善了主操纵系统疲劳试验载荷谱。另外,对小操纵位移频次问题研究结果在其全机主操纵系统疲劳试验中的实施效果进行了阐述。

A study of the number of small control displacement test cycles is conducted for improving the fatigue test load spectrum of primary flight control system. As an example, the result of this study is used for the calculation of the number of small control displacement test cycles for an aircraft to improve the fatigue test load spedtrum of the primary flight control system for that aircraft.