The invention discloses a method and a device for suppressing high-speed impulse noise of a helicopter and the helicopter, and relates to the technical field of helicopter noise control. At least one synthetic jet exciter is embedded in the upper surface of a blade tip, the synthetic jet exciter can generate upward jet flow, and the jet flow can act with the main flow of a blade to form an aerodynamic shape; when high-speed pulse noise is generated, shock waves on the propeller tip are noise shock waves, and the opening state and control parameters of the synthetic jet exciter are adjusted to change the shape of the aerodynamic appearance so as to weaken the strength of the noise shock waves. According to the method and the device for suppressing the high-speed impulse noise of the helicopter and the helicopter, the high-speed impulse noise of the rotor of the helicopter in each flight state can be effectively suppressed, and the applicability is good.

    本发明公开了一种抑制直升机高速脉冲噪声的方法、装置及直升机,涉及直升机噪声控制技术领域,将至少一个合成射流激励器内嵌在桨尖的上表面,合成射流激励器能够产生向上的射流,射流能够与桨叶主流作用形成气动外形,产生高速脉冲噪声时桨尖上的激波为噪声激波,调整合成射流激励器的开启状态和控制参数改变气动外形的形状以削弱噪声激波的强度。该抑制直升机高速脉冲噪声的方法、装置及直升机,能够有效的抑制直升机在各个飞行状态下旋翼的高速脉冲噪声,适用性好。


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    Title :

    Method and device for suppressing high-speed impulse noise of helicopter and helicopter


    Additional title:

    抑制直升机高速脉冲噪声的方法、装置及直升机


    Contributors:
    CHEN RONGQIAN (author) / LIU JIAQI (author) / YIN ZHIFEI (author) / YOU YANCHENG (author)

    Publication date :

    2022-02-15


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B64C AEROPLANES , Flugzeuge




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