预载下带间隙舵面旋转频率测试方法研究

Study on Testing Method of Rotation Frequency of Control Surface with Gap under Preloading

间隙的存在给航空结构带来了很大的安全隐患。间隙会影响舵面的旋转频率,此时对舵面施加预载可以有效地克服间隙非线性的影响,从而获取舵面的旋转频率。本文根据静力学原理,设计加工了克服舵面间隙的预加载系统,并以此建立了带预载间隙舵面旋转频率测试方法。针对某飞机舵面旋转频率的试验结果表明,本文所提方法可以有效实现对舵面旋转频率的测试。

The existence of the gap brings great hazards to the safety of the aviation structure. The gap will affect the rotation frequency of the control surface, and the nonlinear effect of the gap can be effectively overcome by applying preloading to the control surface, then the rotation frequency of the control surface will be measured. In terms of the statics principle, a preloading system is designed and manufactured to overcome the gap of control surface, and a method for measuring the rotation frequency of control surface with preloading gap is established. Experimental results show that the proposed method can effectively measure the rotation frequency of the control surface of aircraft.