起落架收放系统动力学仿真

飞机起落架收放系统是以液压控制系统驱动起落架机构运动的综合复杂系统,涉及运动学、多体系统动力学、液压控制等方面内容。为研究起落架收放系统特性,以某型机工作原理和数字样机为例,采用Simcenter 3D Motion和AMESim建立了基于全机的起落架机构和液压控制系统的联合仿真模型。将起落架收放机构的负载仿真结果与某型飞机实测数据进行对比,两者基本吻合,说明该仿真可作为起落架收放系统设计及深入研究的依据。根据仿真结果,对起落架收放机构负载、收放速度以及液压控制系统的压力、流量响应特性进行了深入研究,同时对飞机各起落架相互作用的影响进行分析。

Simulation on Dynamics of Landing Gear Retraction and Extension System

The aircraft landing gear retraction and extension system is a complex integrated system with a hydraulic control system driving the movement of the landing gear mechanism, involving kinematics, multi-body system dynamics, hydraulic control and other content. To study the landing gear retraction and extension system characteristics, a joint simulation model of the landing gear mechanism and hydraulic control system based on the full aircraft was built using Simcenter 3D Motion and AMESim, following the working principle of a type of aircraft and a digital prototype as an example. The load simulation results of the landing gear mechanism retract and release were compared with the actual measurement data of a certain type of aircraft, the two basically match, which shows that the simulation can be the basis for the design and in-depth study of the landing gear retraction and extension system; further study of the load on landing gear retract and release mechanism, release speed and the pressure and flow response characteristics of the hydraulic control system was conducted on the basis of the simulation results, and the interaction of the aircraft landing gear was also analyzed.