旋翼/机身组合模型试验台“地面共振”分析

Analysis of “Ground Resonance” of the Rotor/Fuselage Combind Model Test Stand

本文介绍了旋翼/机身组合模型试验台“地面共振”分析方法,给出了装上不同旋翼模型时的“地面共振”分析结果。为了满足旋翼/机身组合模型试验台“地面共振”稳定性要求,根据试验台不同的工作环境,应对试验台进行相应的结构更改,以改变试验台的动特性,使之与旋翼模型相匹配。本文详细介绍了采用这一措施成功地解决×旋翼模型在试验台上运转时的动力稳定性问题。

In this paper, the analytical method about the 'ground resonance' is introduced. It is applicable to test stand of the rotor/fuselage combined model The conclusion is also presented in this paper when different rotor models are mounted. In order to meet the stability requirements about the 'ground resonance' of the test stand, the change about the structure in the stage should be made according to the different working circumstances. Thus, we can change the dynamic charastics of the testing stage, so that it can match the rotor model By this method, we can successfully solve the dynamic stability problem × rotor model is riming on the testing stage, and it is discussed in the paper.