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2. 发明专利

JP2003066970A Acoustic test facility and jet nozzle used for the same 有权
标题翻译：声音测试设备和喷气喷嘴用于此
公开(公告)号：JP2003066970A
公开(公告)日：2003-03-05
申请号：JP2001252744
申请日：2001-08-23
申请人： Kawasaki Heavy Ind Ltd , Natl Space Development Agency Of Japan , 宇宙開発事業団 , 川崎重工業株式会社
发明人： SAEGUSA HIROSHI , UEDA TADASHI
IPC分类号： F02K9/96 , G10K11/22 , H04R29/00
摘要： PROBLEM TO BE SOLVED: To provide an acoustic test facility which is improved so as to allow automatically controlling and generating a large power and high frequency sound which can not be covered by an acoustic converter, and a jet nozzle used for it.
SOLUTION: The acoustic test facility comprises an echo chamber 1 where a diffuse sound field is formed and a test piece 2 is placed, an acoustic converter 4 for generating sound pressure spectrums of high frequency components in the echo chamber 1, an air pressure generator 5 for supplying the acoustic converter 4 with compressed air and an acoustic control apparatus 9 for controlling a compressed air flow emitted into the echo chamber 1 and the sound pressure spectrums of the high frequency components generated in the echo chamber 1, and is also provided with a high pressure air emitting apparatus 19 for branching the compressed air supplied from the air pressure generator 5 to the acoustic converter 4 at a branching path and emitting the compressed air into the echo chamber 1 as a jet flow and a regulator 20 intermediately provided on the blanching path of the compressed air to the high pressure air emitting apparatus 19 and controlling an opening angle based on a control signal from a computer 10 in the acoustic control apparatus 9.
COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：提供改进的声学测试设备，以便能够自动控制和产生不能被声学转换器覆盖的大功率和高频声音以及用于其的喷嘴。解决方案：声学测试设备包括形成扩散声场的回波室1和放置测试片2的声学转换器4，用于产生回波室1中的高频分量的声压谱的声转换器4，气压发生器5 用于向声转换器4提供压缩空气，以及用于控制发射到回波室1中的压缩空气流的声控制装置9和在回波室1中产生的高频分量的声压谱，并且还设置有用于将从空气压力发生器5供应的压缩空气以分支路径分支到声转换器4并将压缩空气作为喷射流发射到回波室1中的高压空气发射装置19和设置在漂烫上的调节器20 压缩空气到达高压空气发生装置19的路径，并根据控制信号控制开启角度音响控制装置9中的计算机10。

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