陀螺偶对飞机起落架摆振的影响

IF 0.8 4区工程技术 Q3 MULTIDISCIPLINARY SCIENCES

Defence Science Journal Pub Date : 2023-11-01 DOI:10.14429/dsj.73.18932

Giridharan V, Sivakumar S

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引用次数: 0

摘要

本文介绍了陀螺仪对起落架摆振响应的影响。飞机纵轴和纵轴的旋转运动之间的陀螺仪效应可能是造成摆振的原因之一。作用在轮轴上的垂直载荷对轮胎的动力特性起着重要的作用，它可能会影响轮胎的摆振振荡。因此，在进行摆振分析时，还需要考虑横向和扭转模式下的垂直动力学。需要合适的数学模型来研究系统的摆振振荡和稳定性。通过引入五自由度陀螺仪偶建立了该系统的数学模型。通过数值分析研究了陀螺耦合对起落架模型的影响。比较了带和不带陀螺耦合模型的仿真结果，研究了各参数对摆振的影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Effect of Gyroscopic Couple on Aircraft Landing Gear Shimmy

This article presents the effect of gyroscopic couples on the shimmy response of landing gear. The gyroscopic effect between the rotational motions of the aircraft’s longitudinal and vertical axes may be one of the causes of shimmy. The vertical load acting on the wheel axle plays a significant role in a tire’s dynamic characteristics, which may influence shimmy oscillation. So, vertical dynamics also need to be considered for shimmy analysis along with lateral and torsional modes. Suitable mathematical models are required to study the system’s shimmy oscillation and stability nature. The mathematical model was developed by introducing a gyroscopic couple with 5 degrees of freedom (DOF). A numeric analysis was made to investigate the influence of gyroscopic couples on the landing gear model. The simulation results of the model with and without gyroscopic couple are compared and the effect of each parameter on shimmy is studied.

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来源期刊

Defence Science Journal 综合性期刊-综合性期刊

CiteScore

1.80

自引率

11.10%

发文量

审稿时长

7.5 months

期刊介绍： Defence Science Journal is a peer-reviewed, multidisciplinary research journal in the area of defence science and technology. Journal feature recent progresses made in the field of defence/military support system and new findings/breakthroughs, etc. Major subject fields covered include: aeronautics, armaments, combat vehicles and engineering, biomedical sciences, computer sciences, electronics, material sciences, missiles, naval systems, etc.