The invention relates to an overall aerodynamic layout of the small unmanned tilting rotorcraft. Wings comprise middle wings and outer wings, the aspect ratio is increased, and the lift-drag ratio isincreased. Each middle wing is a straight upper single wing and is in smooth transition with the fuselage, and the middle wing is provided with a flap and an aileron. And the outer wings are sharpenedand inverted and are arranged on the outer side of the fairing. A rotor wing system is in a vertical state when the helicopter flies in a mode and is in a horizontal state when the helicopter flies in a fixed wing mode, and a fairing and the outer wings tilt along with the rotor wing system. During vertical flight, flaps and ailerons deflect downwards, and the outer wings are in a vertical state, so that the influence of downwash of the rotor wings on the wings is reduced, and the flight performance of the helicopter mode is improved. The T-shaped empennage is adopted to reduce the influenceof wing downwash flow on the empennage, and the control efficiency is improved. The empennage comprises a horizontal tail and a vertical tail, an elevator is arranged on the horizontal tail, and a rudder is arranged on the vertical tail. The overall aerodynamic layout has the good vertical flight aerodynamic characteristic, meanwhile, the cruise lift-drag ratio is high, the cruise lift-drag ratioof a clean configuration is larger than 16, and the overall aerodynamic layout has the good level flight aerodynamic characteristic.

    一种小型无人倾转旋翼机总体气动布局,机翼包括中翼和外翼,增大展弦比,提高升阻比。中翼为平直上单翼,与机身平滑过渡,中翼上布置有襟翼和副翼。外翼尖削上反,布置在整流罩外侧。旋翼系统在直升机模式飞行时处于垂直状态,在固定翼模式飞行时处于水平状态,整流罩、外翼随旋翼系统一同倾转。垂直飞行时,襟翼和副翼向下偏转,外翼处于垂直状态,降低了旋翼下洗流对机翼的影响,提高直升机模式飞行性能。采用T型尾翼降低机翼下洗流对尾翼的影响,提高操纵效率。尾翼包括平尾和垂尾,平尾上布置有升降舵,垂尾上布置有方向舵。本发明具有良好的垂直飞行气动特性,同时巡航升阻比高,干净构型巡航升阻比大于16,具有良好的平飞气动特性。


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    Title :

    Overall aerodynamic layout of small unmanned tilting rotorcraft


    Additional title:

    一种小型无人倾转旋翼机总体气动布局


    Contributors:
    WU WEIWEI (author) / ZHANG LIAN (author) / SUN KAIJUN (author) / SHAO CAIJING (author) / LAN WENBO (author)

    Publication date :

    2020-12-01


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B64C AEROPLANES , Flugzeuge



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