The invention discloses a blowing and high-lift device for upper surface of a wing of a ducted fan of an electric aircraft which comprises a wing duct, and a flap is rotatably mounted at an outlet of the wing duct; the inner side of the wing duct is divided into a plurality of cavities at equal intervals by connecting wall plates, and a fan body, a propeller hub and a motor base are arranged in each cavity; and each fan body is rotationally connected with the propeller hub and the motor base. The flap is arranged behind an outlet of the duct, and the flap is folded during cruising to reduce cruising resistance. During hovering and low-speed flight, the flaps are put down, due to the Coanda effect, high-speed airflow blown out by the ducted fan can flow along the upper surfaces of the flaps without being separated, and the direction of thrust is changed after the airflow deflects. Airflow on the upper surface of the flap is further accelerated due to flap deflection, and a low-pressure area is formed to generate additional lift perpendicular to the fan axis. When the aircraft advances at a low speed, the attack angle of the duct of the blowing and high-lift device is small, and the blowing and high-lift device is beneficial to work of the fan.
本发明公开了一种电动飞机涵道风扇机翼上表面吹气增升装置,包含机翼涵道,所述襟翼转动安装在机翼涵道的出口处;所述的机翼涵道的内侧被连接壁板等间距分割为多个腔体,每个腔体内部均设置有风扇本体和桨毂及电机座;所述的风扇本体与桨毂及电机座转动连接。涵道风扇上表面吹气增升装置在涵道出口后布置襟翼,在巡航时襟翼收起减小巡航阻力。在悬停及低速飞行时,襟翼放下,由于柯恩达效应,由涵道风扇吹出的高速气流会沿襟翼上表面流动而不产生分离,气流偏转后改变推力产生的方向。襟翼上表面气流由于襟翼偏转被进一步加速,形成低压区产生垂直风扇轴线的额外升力。当飞机以较低速度前进时,使用吹气增升装置的涵道攻角较小,对风扇工作有利。
Blowing and high-lift device for upper surface of wing of ducted fan of electric aircraft
一种电动飞机涵道风扇机翼上表面吹气增升装置
2021-12-31
Patent
Electronic Resource
Chinese
AIRCRAFT WING HAVING INTEGRATED DISTRIBUTED DUCTED FAN, AND ELECTRIC AIRCRAFT
European Patent Office | 2024
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