无杆牵引系统不平路面工况下起落架载荷仿真

Landing gear load simulation of towbarless traction system on uneven road

以某C型飞机为目标机型,利用SolidWorks和Adams软件建立飞机-无杆牵引车模型,研究无杆牵引车抱轮装置的抱起载荷裕度。以动力学理论分析为基础,总结了两种不平路面的模型,对某一牵引速度(5km/h)下无杆牵引车牵引飞机经过不平路面的过程进行了动力学仿真。考察不平路面上前起落架缓冲支柱的载荷变化,将峰值载荷作为抱轮装置的抱起载荷裕度。仿真结果表明,前起落架缓冲支柱受到的载荷随凹坑或者凸起深度的增大而增大,载荷曲线随凹坑或凸起宽度的增大先增再减然后缓慢增大,且随着宽度的增大,载荷曲线变化趋向缓慢。

Taking one C type aircraft as research target, the model of aircraft-towbarless tractor is established based on SolidWorks and Adams in order to study the load margin of towbarless wheel holding device Two kinds of uneven road models are summarized basing on theretical analysis. Dynamic simulation is carried out on the process of a towed tractor with a traction speed(5 km/h) based on dynamic theory analysis. The load of nose landing gear pillar is measured on uneven road;the maximum peak load is taken as load margin of the wheel lifting device. Simulation results show that the load of nose landing gear pillar increases with the depth enlargement of the pit or bulge, and the load curve firstly increases and then decreases with the width increase of the pit or bulge, then slowly increases, the load curve slowly changes with the width increase.