An analysis of jet aircraft engine exhaust nozzle entrance profiles,accountability and effects

Kuchar, A. P.; Tabakoff, W.

doi:10.2514/6.1976-152

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Discharge Coefficients1

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1978

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“…This is not the case at thrust nozzle exits, with the result that additional assumptions have to be made choosing an appropriate averaging method to obtain a relevant total pressure, (Kuchar and Tabakoff, 1976;Decher, 1977).…”

Section: Discharge Coefficientsmentioning

confidence: 99%

A Numerical Investigation Into the Nozzle Flow of High By-Pass Turbofans

Zimmermann

Katheder

Jula

1992

Volume 2: Aircraft Engine; Marine; Microturbines and Small Turbomachinery

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Numerical investigations for the interacting flow fields of primary and secondary nozzles confirm, that for high by-pass turbofans there is a strong influence of the fan flow on the discharge and thrust coefficients of the core nozzle and of the fan afterbody shape on the coefficients of the fan nozzle. After a review of standard methods two new parameters to correlate the thrust of different concepts are proposed and investigations into flight conditions are put forward. Several nozzle coefficients derived from the integrated velocity profiles and the static pressure field are necessary to assess the quality of nozzle flow.

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Section: Discharge Coefficientsmentioning

confidence: 99%