The invention belongs to the field of aerodynamic layout design of aircrafts, and particularly relates to a vector ducted tail rotor high-speed helicopter which comprises a fuselage, a main rotor, lift wings, a horizontal empennage, a vertical empennage and a ducted fan, and an air inlet of the ducted fan faces the fuselage, is rotatably connected with the upper portion of the tail of the fuselage and can horizontally rotate above the tail of the fuselage; when the helicopter flies forwards at a high speed, an angle alpha is formed between the central axis of the ducted fan and the central axis of the fuselage and is larger than or equal to 0 degree and smaller than 90 degrees, and alpha is equal to 90 degrees during hovering and low-speed flying. Vector control of tail thrust is achieved by horizontally rotating the whole ducted fan, the defect of a common ducted tail rotor in control efficiency is overcome, control efficiency and action efficiency are improved, and the flight speed is greatly increased. In addition, the number of control channels of the vector ducted tail rotor system is relatively small, and the operation steps of a pilot are simplified; and as the tail of the ducted fan is not provided with a pneumatic control surface, airflow in a wake flow area is more stable and uniform, and flight is safer.
本发明属于飞行器气动布局设计领域,特别涉及一种矢量涵道尾桨高速直升机,包括机身、主旋翼、升力机翼、水平尾翼、垂直尾翼和涵道风扇,涵道风扇进风口朝向机身且可转动连接于机身尾部上方,能够在机身尾部上方水平旋转;直升机高速前飞时,涵道风扇中轴线与机身中轴线成角度α,0°≤α<90°,悬停和低速飞行时α=90°。本发明通过将整个涵道风扇进行水平旋转来实现尾部推力的矢量控制,弥补了普通涵道式尾桨在控制效率上的不足,提高了控制效率和动作效率,大幅提高了飞行速度。此外,本发明矢量涵道尾桨系统的控制通道数量相对较少,简化了飞行员操作步骤;由于涵道风扇尾部无气动舵面,尾流区气流也更加稳定均匀,飞行更加安全。
Vector ducted tail rotor high-speed helicopter
一种矢量涵道尾桨高速直升机
2021-06-25
Patent
Electronic Resource
Chinese
IPC: | B64C AEROPLANES , Flugzeuge |
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