摘要
基于对旋翼近地飞行时流场的N-S方程计算,计算并讨论了近地飞行时,旋翼拉力、扭矩系数及桨叶挥舞角随前进比、离地高度的变化情况。结果表明,在地面涡出现的飞行条件下,与无地面效应的情形相比,旋翼拉力和侧倾角有显著变化。
Based on the previous computation for a rotor flow field in forward flight near ground, the thrust coefficient, torque coefficient and blade flapping angles are calculated and analysed against the advance ratios and flight heights. The results show that the ground effects play a very important role in the thrust coefficient and blade lateral tilt angle.
出处
《航空学报》
EI
CAS
CSCD
北大核心
1997年第6期709-711,共3页
Acta Aeronautica et Astronautica Sinica
基金
航空科学基金
关键词
旋翼气动力
桨叶挥舞运动
地面效应
rotor aerodynamic forces, blade flapping motion, ground effects