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    • 6. 发明授权
    • Underwater sound generator
    • 水下声发生器
    • US4098369A
    • 1978-07-04
    • US644778
    • 1975-12-29
    • Samuel AltschulerJerre A. Hitz
    • Samuel AltschulerJerre A. Hitz
    • G01V1/116G01V1/06
    • G01V1/116
    • A monopropellant fluid is ignited in a combustion chamber to form a pressurized gas volume which may include the interior of a piston valve opening into the combustion chamber. A first gas path leading out of the combustion chamber conducts gas to surface areas of the piston so as to exert pressure urging the piston valve closed. A second gas path leading out of the combustion chamber conducts gas to other surface areas of the piston so as to exert pressure urging the piston valve to open a plurality of radial exhaust ports which vent the gas out of the combustion chamber and thereby generate a sonic pulse. Periodic opening and closing of the piston valve causes a train of sonic pulses to be generated.
    • 单个推进剂流体在燃烧室中点燃以形成加压气体体积,其可以包括通向燃烧室的活塞阀的内部。 从燃烧室引出的第一气体路径将气体传导到活塞的表面区域,以施加推动活塞阀关闭的压力。 从燃烧室引出的第二气体路径将气体传导到活塞的其它表面区域,以便施加压力以推动活塞阀打开多个径向排气口,排出气体排出燃烧室,从而产生声音 脉冲。 定期打开和关闭活塞阀会产生一串声波脉冲。