Author:
ZHANG Ming,WEI Xiyang,YANG Zimin,SHI Xiazheng
Abstract
为了分析起落架支柱柔性和机身柔性对飞机地面运动载荷的影响, 应用动力学基本原理, 建立了六轮小车式起落架动力学模型及全机模型。对活塞杆与外筒柔性化处理, 并在对称水平着陆、机尾下沉着陆和滚转着陆3种着陆工况下, 分析了小车式起落架的载荷分配情况, 研究了着陆工况及支柱柔度对小车式起落架载荷分配的影响。对机身进行柔性化处理, 分析机身柔性对地面载荷的影响。结果表明: 支柱柔度对起落架航向载荷影响较大, 对垂向载荷影响较小; 考虑机身柔性后, 弹性机身变形吸收能量, 有助于减弱机体振动, 起落架及轮胎上的载荷也明显减小。
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