Title: Method for detecting active sound wave in supersonic flow field
Application Number: 200510069277 Application Date: 2005.05.16
Publication Number: 1670491 Publication Date: 2005.09.21
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: G01H5/00,G01H17/00,G01M9/02
Applicant(s) Name: Institute of Mechanics, Chinese Academy of Science Address: 100080
Inventor(s) Name:
Attorney & Agent: yin zhenqi
Abstract:
     This invention discloses a hyper sonic flow field active sound wave measurement method, which comprises the following steps: a, generating a series of high frequency impulse signals by computer; b, amplifying the signals through sound frequency amplifier and outputting reproducer driver to generate sound wave impulse; c, conducting the sound wave through wave guide tube to the stable section; d, recording the sound wave and background noise through wind speed meter after the high frequency sound wave enters the wind hole test section; e, separating the background noise from small range of high signals through filter; f, inputting signals to the computer for systematic even computation through amplifier.
Time: 11
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