The invention provides a static water low-noise hydrodynamic noise rotation test device which comprises a stepping motor and a speed reducer located below the stepping motor, a rotating shaft of a rotating arm is connected with the speed reducer through a damping device, and a sectional type variable-length suspender is used for connecting a test model and the rotating arm. The stepping motor and the speed reducer are installed on the supporting frame through the double-layer vibration isolation device, and the stepping motor and the speed reducer can push the rotating arm to rotate so as to drive the test model to do large-diameter rotary motion. The test device disclosed by the invention can be used for carrying out a rotation test in a relatively large water pool or a lake or on the sea, and controlling sound radiation of mechanical vibration noise to underwater at the same time, so that background noise is effectively reduced, and measurement of flow-induced vibration noise of a large-scale model is realized.

    本发明提供一种静水中低噪声水动力噪声旋转试验装置,包括步进电机以及位于步进电机下方的减速机,旋转臂的转轴通过减振装置与减速机连接,分段式可变长吊杆用于连接试验模型和旋转臂,所述步进电机和减速机通过双层隔振装置安装于支撑架上,步进电机和减速机可以推动旋转臂旋转,进而带动试验模型做大直径回转运动。本发明的试验装置可以在较大水池中或湖、海上进行旋转试验,同时控制机械振动噪声向水下的声辐射,有效降低了背景噪声,以实现对大尺度模型的流激振动噪声的测量。


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    Title :

    Low-noise hydrodynamic noise rotation test device in still water


    Additional title:

    一种静水中低噪声水动力噪声旋转试验装置


    Contributors:
    SUN GUOCANG (author) / ZHANG JINLAN (author) / LIU AO (author) / ZHANG MIAO (author) / ZHU JIE (author) / ZHOU FUCHANG (author) / NIU CHEN (author) / WANG XIHUI (author)

    Publication date :

    2025-03-11


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B63B Schiffe oder sonstige Wasserfahrzeuge , SHIPS OR OTHER WATERBORNE VESSELS / G01H MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES , Messen von mechanischen Schwingungen oder Ultraschall-, Schall- oder Infraschallwellen / G01M TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES , Prüfen der statischen oder dynamischen Massenverteilung rotierender Teile von Maschinen oder Konstruktionen



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    HANSON, D. B. | AIAA | 1985



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    Prediction of counter-rotation propeller noise

    PARRY, A. / CRIGHTON, D. | AIAA | 1989