Propagation of interfering signals delayed. Experiments demonstrated utility of slow-wave isolation between transmitting and receiving transducers in acoustic measurements of sound speed and/or flow velocity in ducts. Specifically, finding pertains to acoustic measurements of speeds of flow of low-molecular-weight gases at pressures low enough to be contained in thin-walled metal conduits.
Slow-Wave Acoustic Isolation For Measurement Of Flow
NASA Tech Briefs ; 17 , 11
1993-11-01
Miscellaneous
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English
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