基于工程应用的起落架动力学建模及仿真结果分析

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.