A rotor blade noise reduction system includes: a plurality of rotor blades; a plurality of first speakers disposed equidistantly on a first circumference which is opposed to one surface of a rotor blade plane; a plurality of second speakers disposed equidistantly on a second circumference which is opposed to the other surface of the rotor blade plane; at least one evaluation microphone configured to acquire noise generated from the rotating rotor blades and control sound generated from the first speakers and the second speakers; and an active sound suppression processor configured to input a plurality of first delay control signals corresponding to the first speakers, and to input a plurality of second delay control signals corresponding to the second speakers.


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    Title :

    ROTOR BLADE NOISE REDUCTION SYSTEM, FL YING OBJECT AND NOISE REDUCTION SYSTEM


    Contributors:

    Publication date :

    2019-09-26


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    G10K Tonerzeugungsvorrichtungen , SOUND-PRODUCING DEVICES / B64C AEROPLANES , Flugzeuge / F04D Strömungsarbeitsmaschinen , NON-POSITIVE-DISPLACEMENT PUMPS



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