道面平整度对飞机滑跑性能的影响分析  

Analysis of Aircraft Taxiing Dynamics with Different Pavement Roughness

作　　者：徐方舟[1] 孔文秦[1] 宋春雨[1] XU Fang - zhou, KONG Wen - qin, SONG Chun - yu(China Academy of Launch Vehicle Technology, Beijing 100076, China)

机构地区：[1]中国运载火箭技术研究院,北京100076

出　　处：《计算机仿真》2018年第10期104-108,共5页Computer Simulation

摘　　要：传统飞机滑行状态动载荷的设计主要采用2G过载的简化计算方法,对飞机滑行过程中实际动载的变化规律缺乏准确的预测评估。通过建立某型飞机全机滑跑仿真分析模型,针对不同速度及不同道面平整度进行滑跑仿真分析,获得了该型飞机的动态滑跑响应。研究结果表明,随着滑行速度的增加,飞机在滑跑时重心处最大过载、轮胎最大垂向载荷及缓冲器最大压缩量呈递增趋势。当道面平整度较好时,在较大的速度范围内,飞机重心处最大过载、轮胎最大垂向载荷均与速度呈线性关系;在半铺砌道面上滑跑时,相比于在铺砌道面滑跑,在各工况下主起轮胎垂向载荷增大约45%~83%,飞机重心处过载增大约98%~166%。The design of traditional aircraft＇s taxiing dynamic load is always calculated by using the simplified method of 2G over loading, which lacks accurate prediction and evaluation of the dynamic load＇s regularity during the taxiing process. Based on the aircraft virtual prototype model, the dynamic responses of the aircraft in different speeds and different pavement roughness were obtained by the taxiing simulation. The results show that the maximum of the over loading in aircraft centre of gravity, vertical loads of tire and shock absorber deflection increases as the taxiing speed increasing. While the paved surfaces is better, there is a linear relationship between maximum over loading in aircraft centre of gravity and the taxiing speed, maximum vertical load of tire and the taxiing speed. Compared with taxiing on the paved surfaces, the vertical load of tire is 1.45 - 1.83 times larger and the over loading in aircraft centre of gravity is 1.98 - 2. 66 times larger than that on the semi - prepared surfaces.

关 键 词：起落架 滑跑 道面平整度 地面动力学 

分 类 号：V212.13[航空宇航科学与技术—航空宇航推进理论与工程] V215