The empennage for improving the aerodynamic performance of the empennage of the high-speed helicopter comprises a conical annular rectification empennage, a horizontal empennage and a vertical empennage, the two ends of the horizontal empennage and the two ends of the vertical empennage are connected with the rectification empennage and the tail of a helicopter body respectively, and a plurality of jet flow outlet sets are formed in the inner wall of the rectification empennage; a jet flow inlet is formed in the area, close to the fuselage and corresponding to the jet flow outlet sets, of the outer wall of the rectification empennage, and each jet flow outlet set communicates with the jet flow inlet; the rectification empennage is arranged to be of a conical annular structure, when the rectification empennage faces axial incoming flow, the whole rectification empennage is represented as a narrow-wide channel, the pneumatic flow speed can be reduced along with increase of the cross section area of the channel, and forward-flying incoming flow enters the channel through a jet flow inlet in the forward-flying process; due to the conical annular structure of the rectification empennage, the speed and direction of gas sprayed out of the jet flow outlet are changed, the horizontal flight speed and the vertical flight speed are neutralized, and therefore thrust bias caused by the flight speed is weakened.

    本发明公开了一种改善高速直升机尾翼气动性能的尾翼,包括锥形的环状整流尾翼、平尾翼以及垂尾翼,平尾翼和垂尾翼的两端均分别与整流尾翼和机身尾部连接,整流尾翼的内壁设有多组射流出口组,整流尾翼的外壁靠近机身的且与射流出口组对应的区域上开设有射流入口,每组射流出口组与射流入口连通;本发明通过将整流尾翼设置成锥形的环状结构,整流尾翼面对轴向来流时,整体表现为一个“窄‑宽”的通道,随着通道截面面积的增大,气动流速将会减缓,在前飞时,前飞来流通过射流入口进入通道,由于整流尾翼本身的锥形环状结构使得从射流出口中喷出的气体速度方向改变,对水平和垂直飞行速度进行中和,从而削弱由于飞行速度导致推力偏置。


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    Title :

    Empennage for improving aerodynamic performance of empennage of high-speed helicopter


    Additional title:

    一种改善高速直升机尾翼气动性能的尾翼


    Contributors:
    ZHAO QIJUN (author) / SUN DAZHI (author) / CHEN XI (author) / MA LI (author) / CAO CHENKAI (author) / YANG TAO (author) / WANG BO (author)

    Publication date :

    2024-11-29


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B64C AEROPLANES , Flugzeuge



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