南京航空航天大学学报2025，Vol.57Issue(2)：226-235,10.DOI:10.16356/j.1005-2615.2025.02.002
低空风切变对大型直升机飞行特性的影响
Influence of Low-Level Wind Shear on Flight Characteristics of Large Helicopters
摘要
Abstract
To analyze the influence of low-level wind shear on the flight characteristics of a large helicopter during takeoff,a wind shear model and a helicopter flight dynamics model coupled with wind interference are established.The effects of vertical shear of horizontal wind with different intensities and directions,as well as vertical shear of upwash and downwash with different intensities,on the attitude,displacement,and control response of a large helicopter during takeoff are simulated.The results show that with the increase of vertical shear intensity of the horizontal wind,the pitch attitude of the helicopter gradually oscillates,and the longitudinal position shifts obviously.The lateral and longitudinal cyclic are significantly affected by the change in wind direction.Both upwash and downwash vertical shears cause changes in helicopter attitude and position,but downwash results in greater attitude variations and has a more serious effect on pilot control.关键词
低空风切变/直升机/飞行特性/飞行动力学/操纵响应Key words
low-level wind shear/helicopter/flight characteristics/flight dynamic/control response引用本文复制引用
叶毅,陈仁良,卫圆..低空风切变对大型直升机飞行特性的影响[J].南京航空航天大学学报,2025,57(2):226-235,10.基金项目
国家自然科学基金(11672128). （11672128）
