NASA Technical Reports Server (NTRS) : Fundamental pdf

NASA Technical Reports Server (NTRS) : Fundamental

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Some results of a study of the importance of geometrical features of the combustor to combustion roughness and resulting noise are presented. Comparison is made among a perforated can flame holder, a plane slotted flame holder and a plane slotted flame holder which introduces two counter swirling streams. The latter is found to permit the most stable, quiet combustion. Crosscorrelations between the time derivative of chamber pressure fluctuations and far field noise are found to be stronger than between the far field noise and the direct chamber pressure signal. Temperature fluctuations in the combustor nozzle are also found to have a reasonably strong crosscorrelation with far field sound

• Creator/s: NASA Technical Reports Server (NTRS
• Date: 7/1/1974
• Year: 1974
• Book Topics/Themes: NASA Technical Reports Server (NTRS), AIRCRAFT ENGINES, COMBUSTION CHAMBERS, ENGINE NOISE, FAR FIELDS, JET ENGINES, ACOUSTIC MEASUREMENT, ACOUSTIC PROPERTIES, NOISE PROPAGATION, NOISE SPECTRA, Plett, E. G., Leshner, M. D., Summerfield, M

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