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Effect of transducer flushness on measured surface pressure fluctuations in flight
Author(s) -
Boris Efimtsov,
А. А. Голубев,
В. П. Кузнецов,
Stephen A. Rizzi,
Anders Andersson,
R. Rackl,
E Adrianov
Publication year - 2005
Publication title -
43rd aiaa aerospace sciences meeting and exhibit
Language(s) - English
Resource type - Conference proceedings
DOI - 10.2514/6.2005-800
Subject(s) - transducer , acoustics , pressure sensor , surface pressure , materials science , physics , mechanics , thermodynamics
The procedure for investigating the effect of deviation from flush mounting of pressure transducers on the exterior of Tu-144LL in flight is described. Experimental data in the mach- number range 0.58 - 2.0 are presented for distortion of the measured wall-pressure fluctuation spectra of the turbulent boundary layer by recessed and protruding transducers. The results of flight experiments are compared with data of wind tunnel experiments (1). The distortion of measured turbulent boundary layer wall pressure fluctuations caused by transducer-surface deviation from the surrounding surface as a function of dimensionless parameters is predicted and presented on the basis of dimensional analysis.

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