苏-27系列飞机前起落架摆振分析

Shimmy analysis of nose landing gear of Su-27s series aircraft

为了满足各自不同的漂浮性、地面操作和起降需求,对苏-27系列飞机前起落架进行了适应性更改设计。本文从摆振稳定性的角度,研究了各改型飞机的前起落架差异特征,并利用工程算法对系列飞机的几种典型前起落架进行了摆振分析,其研究结论可应用于其它飞机的前起落架设计和试验。

The nose landing gears of Su-27 series aircraft have been designed to meet various requirement covering flotation and all ground-based operations of whole family,from the baseline type to multi-role modified derivatives. In this paper,the different characteristics of nose landing gears of Su-27 series aircraft are reviewed with respect to shimmy stability,some engineering algorithms are applied to shimmy analysis. The general conclusion in this study will be a valuable guide in analyzing shimmy problem and test of other nose landing gear.