直升机起落架着陆载荷及参数影响分析

Helicopter Landing Gear Loading and Parametric Analysis

建立了直升机起落架着陆时的动力学分析模型,对起落架冲击载荷进行了动态仿真。计算分析了着陆下沉速度、旋翼拉力系数、轮胎压力及缓冲支柱通油孔面积等参数对起落架冲击载荷的影响。结果表明,直升机下沉速度提高时,起落架参数应作相应调整以降低冲击载荷。

Analytical model of helicopter landing gear dynamics was presented for landing strike loading simulations. The influences of parameters, such as landing vertical velocity, rotor lift coefficient, gas pressure of tires, diameter of hydraulic damping holes, etc, on landing gear strike loading were analyzed. The analytical results indicate that if the designed landing velocity is increased, parameters of the landing gear must be adjusted in order to landing load decrement.