Bifurcation Analysis of Nose-Landing-Gear Shimmy with Lateral and Longitudinal Bending

被引：35

作者：

Thota, Phanikrishna ^{[1
]}

Krauskopf, Bernd ^{[1
]}

Lowenberg, Mark ^{[2
]}

机构：

[1] Univ Bristol, Dept Engn Math, Bristol BS8 1TR, Avon, England

[2] Univ Bristol, Dept Aerosp Engn, Bristol BS8 1TR, Avon, England

来源：

JOURNAL OF AIRCRAFT | 2010年 / 47卷 / 01期

关键词：

D O I：

10.2514/1.43507

中图分类号：

V [航空、航天];

学科分类号：

08 ; 0825 ;

摘要：

This work develops and studies a model of an aircraft nose landing gear with torsional, lateral, and longitudinal degrees of freedom. The corresponding three modes are coupled in a nonlinear fashion via the geometry of the landing gear in the presence of a nonzero rake angle, as well as via the nonlinear tire forces. Their interplay may lead to different types of shimmy oscillations as a function of the forward velocity and the vertical force on the landing gear. Methods from nonlinear dynamics, especially numerical continuation of equilibria and periodic solutions, are used to asses how the three modes contribute to different types of shimmy dynamics. In conclusion, the longitudinal mode does not actively participate in the nose-landing-gear dynamics over the entire range of forward velocity and vertical force.

引用

页码：87 / 95

页数：9