飞机起落架收放液压系统设计、分析与实验验证

Design,Analysis and Experimental Validation for Hydraulic Extension/Retraction System of Aircraft Landing Gears

为了通过地面实验验证飞机起落架收放系统性能,研制了可精确模拟气动载荷的起落架收放实验系统。根据收放液压系统各模块特点,基于LMS Imagine Lab.AMESim软件建立了液压收放系统的仿真模型,模拟起落架液压收放系统的收放过程,对系统进行动态仿真分析,预估实验系统性能。通过实验数据与仿真数据的对比分析,检验实验系统的正确性。结果表明:系统能够满足起落架收放实验基本功能要求,仿真结果与实验结果较为接近。

In order to ensure the performance of the extension/retraction system of aircraft landing gears, an experimental system is developed, which can simulate the aerodynamic load of landing gears more accurately. According to the characteristics of each module of the hydraulic system and based on the soft-ware LMS Imagine Lab. AMESim, a simulation model is established to simulate the procedure of the hydraulic extension/retraction system of landing gears, and the dynamic simulation analysis is conducted to predicate the performance of the experiment system. The contrastive analysis of the experimental da- ta and the simulation data validates the correctness of the experiment system. The results show that the system can meet the basic functional requirements of the aircraft landing gear system and the simulation results have a good agreement with the experimental results.