The effect of starting angle of wing rock on the vortex behaviour was considerable. 还发现翼摇滚起始角对旋涡特性有较大影响。
According to the flight test, it is clear that the most distinct cue of starting to get into vortex ring state is the appearance of heading oscillation, and some kinetic regularity after sinking into vortex ring state are detected as well. 通过试飞,明确了直升机进入涡环状态的首要特征现象是机头开始出现航向摆动,摸清了直升机进入涡环状态后的一些运动规律。
Starting off with vortex tube theory, the relationship between the angular rates and the first harmonic inflow is deduced, and then the generalized model of main rotor dynamic inflow is modified. 本文建立了尾迹弯曲的模型,推导出角速率与一次谐波入流分量之间的关系,据此对旋翼的广义动态入流模型进行了增广和修正;