Windmilling Characteristics of Centrifugal-Flow Turbojets

A new nondimensional method for predicting the windmilling performance of centrifugal -flow turbojet engines in flight has been developed. The method incorporates loss correlations to estimate the performance of major engine components. Given basic engine geometry, flight Mach number, and ambient co...

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Bibliographic Details
Published inKSME international journal Vol. 18; no. 11; pp. 2021 - 2031
Main Authors Yoo, Il-Su, Song, Seung Jin, Lim, Jin Shik
Format Journal Article
LanguageKorean
Published 2004
Subjects
Turbouet Engine
Windmilling
Loss Analysis
Transient Performance
Non-Dimensional Parameter
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Summary:A new nondimensional method for predicting the windmilling performance of centrifugal -flow turbojet engines in flight has been developed. The method incorporates loss correlations to estimate the performance of major engine components. Given basic engine geometry, flight Mach number, and ambient conditions, this method predicts transient and steady-state windmilling performance. Thus, this method can be used during the preliminary design stage when detailed hardware geometry and component performance data are not yet available. A nondimensional time parameter is newly defined, and using this parameter, the transient performance of different types of turbojets (e.g. centrifugal vs. axial) is compared. In addition, the predictions' sensitivity to loss correlations, slip factors, and inlet ambient temperatures are analyzed.
Bibliography:KISTI1.1003/JNL.JAKO200411922933571
ISSN:1226-4865