Jet engine exhaust noise due to rough combustion and nonsteady aerodynamic sources
Jet engine exhaust noise due to rough combustion and nonsteady aerodynamic sources
- New search for: Plett, E.G.
- New search for: Summerfield, M.
- New search for: Plett, E.G.
- New search for: Summerfield, M.
Fluctuations in mass and momentum at the nozzle exit account for internal sources in the model developed, and effective scaling parameters are determined using detailed laboratory scale data. It is found that up to jet Mach numbers about 0.45 the noise is dominated by mass-flow fluctuations generated at the exit plane by combustion-driven fluctuations inside the engine of the acoustic-resonant type. At higher Mach numbers mass-flow fluctuations at nozzle-dominated frequencies predominate; below Mach 1 the jet contribution, or exit plane momentum fluctuations, are not significant.
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Jet engine exhaust noise due to rough combustion and nonsteady aerodynamic sources
Das Abgasgeraeusch beim Strahlantrieb auf Grund unvollkommener Verbrennung und nichtstationaerer aerodynamischer Quellen
Journal of the Acoustical Society of America ; 56 , 2 ; 516-522
1974
, 15 Quellen
Article (Journal)
English
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