基于工程应用的起落架动力学建模及仿真结果分析  

Dynamic modeling and simulation results analysis of landing gear based on engineering applications

作　　者：王晨 马红亮 王维军[2] 房务官 孙通 Wang Chen;Ma Hongliang;Wang Weijun;Fang Wuguan;Sun Tong(Beijing Aerospace Technology Institute,Beijing 100074,China;Beihang University,Beijing 100191,China)

机构地区：[1]北京空天技术研究所,北京100074 [2]北京航空航天大学,北京100191

出　　处：《空天技术》2024年第4期62-75,共14页Aerospace Technology

摘　　要：为满足飞行仿真、起落架设计等工程应用对于起落架模型的使用需求,梳理了起落架模型在飞行仿真中的定位;根据起落架构造,递进式地推导了包括二质量模型、轮胎模型、缓冲器模型在内的,应用于固定翼飞机的前三点式起落架模型,并通过仿真试验分析了模型内自身参数变化对起落架模型整体性能的影响。结果表明:缓冲器自身参数对起落架模型性能有较大影响,其油孔流量系数(油孔面积)变化影响着起落架缓冲过程的刚度、阻尼特性,对飞机起降所受法向过载、缓冲器支柱力、压缩行程和速率等数据产生直接影响,且油孔流量系数(油孔面积)数值的选取受到起落架模型以及结构强度的限制。In order to meet the requirements of the use of the landing gear model in engineering applications such as flight simulation and landing gear design, it was sorted out that the position of landing gear model in flight simulation, it was developed that a front three point landing gear model for the fixed wing aircraft, which included the two mass model, the tire model and the buffer model, and it was analyzed that the impact of changing the model's own parameters on the overall performance of the landing gear model through simulation experiments. The results indicated that the parameters of buffer had a significant impact on the performance of the landing gear model. The changes of oil hole flow coefficient(oil hole area) had an effect on the rigidity and damping characteristics of the landing gear buffering process and directly affected the normal overload of aircraft, strut load, compression stroke and compression rate of buffer during takeoff and landing.The selection of oil hole flow coefficient(oil hole area) value was limited by the landing gear model and structural strength.

关 键 词：起落架模型 起落架设计 飞行仿真 缓冲器支柱力 压缩行程和速率 油孔流量系数 

分 类 号：V216.7[航空宇航科学与技术—航空宇航推进理论与工程]