摘要
主要介绍支柱式起落架缓冲器的各个参数,包括缓冲支柱的初压力、初容积、油孔面积、活塞面积、缓冲支柱行程等。介绍起落架落震时缓冲器轴向载荷的计算公式。结合具体飞机型号利用初始参数通过AD-AMS软件建立数值模型并进行仿真分析,计算结果与试验结果比较,发现两者具有较好的一致性。最后以起落架缓冲器的油孔面积作为设计参数进行优化分析,给出最优值。
An analysis and design calculation of shock absorber performance parameters for telescopic landing gear, including initial pressure and volume, orifice area, piston area and total strut stroke etc, are presented. The axial loads on the shock absorber during the drop test of main landing gear was analyzed, a parameter model of landing gear was established, and a numeric simulation was con- ducted for optimization analysis to find out the influence of the absorber property when changing the orifice area. There is a good correspondence between the simulation prediction and the experimental results. The results show that the parameter optimization analysis of landing gear may be useful for engineering applications
出处
《飞机设计》
2007年第4期26-30,共5页
Aircraft Design
基金
中国民航大学科研基金(06kym10)资助项目
关键词
起落架
缓冲器
仿真分析
优化分析
landing gear
shock absorber
simulation analysis
optimal analysis
