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    Influence of Compressor Deterioration on Engine Dynamic Behavior and Transient Stall-Margin

    Source: Journal of Turbomachinery:;2000:;volume( 122 ):;issue: 003::page 477
    Author:
    Z. S. Spakovszky
    ,
    J. B. Gertz
    ,
    J. D. Paduano
    ,
    A. H. Epstein
    ,
    O. P. Sharma
    ,
    E. M. Greitzer
    DOI: 10.1115/1.1303817
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: This paper presents an experimental and analytical investigation of compressor stability assessment during engine transient operation. A two-dimensional, linear, compressible, state-space analysis of stall-inception (Feulner et al., 1996, ASME J. Turbomach., 118 , pp. 1–10) was modified to account for engine transients and deterioration, with the latter modeled as increased tip-clearance and flow blockage. Experiments were performed on large commercial aircraft engines in both undeteriorated and deteriorated states. Unsteady measurements of pressure in these test engines during rapid accelerations revealed the growth of pre-stall disturbances, which rotate at rotor speed and at approximately half rotor speed. These disturbances are stronger in deteriorated engines. The model showed that the signal at shaft speed was the first compressible system mode, whose frequency is near shaft speed, excited by geometric nonuniformities. The computed behavior of this mode during throttle transients closely matched engine data. The signal increased in strength as stall was approached and as the engine deteriorated. This work firmly establishes the connection between observed signals in the these engines and first principles stability models. [S0889-504X(00)01603-2]
    keyword(s): Pressure , Engines , Compressors , Rotors , Signals , Flow (Dynamics) , Stability AND Measurement ,
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      Influence of Compressor Deterioration on Engine Dynamic Behavior and Transient Stall-Margin

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    http://yetl.yabesh.ir/yetl1/handle/yetl/124466
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    • Journal of Turbomachinery

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    contributor authorZ. S. Spakovszky
    contributor authorJ. B. Gertz
    contributor authorJ. D. Paduano
    contributor authorA. H. Epstein
    contributor authorO. P. Sharma
    contributor authorE. M. Greitzer
    date accessioned2017-05-09T00:03:37Z
    date available2017-05-09T00:03:37Z
    date copyrightJuly, 2000
    date issued2000
    identifier issn0889-504X
    identifier otherJOTUEI-28679#477_1.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/124466
    description abstractThis paper presents an experimental and analytical investigation of compressor stability assessment during engine transient operation. A two-dimensional, linear, compressible, state-space analysis of stall-inception (Feulner et al., 1996, ASME J. Turbomach., 118 , pp. 1–10) was modified to account for engine transients and deterioration, with the latter modeled as increased tip-clearance and flow blockage. Experiments were performed on large commercial aircraft engines in both undeteriorated and deteriorated states. Unsteady measurements of pressure in these test engines during rapid accelerations revealed the growth of pre-stall disturbances, which rotate at rotor speed and at approximately half rotor speed. These disturbances are stronger in deteriorated engines. The model showed that the signal at shaft speed was the first compressible system mode, whose frequency is near shaft speed, excited by geometric nonuniformities. The computed behavior of this mode during throttle transients closely matched engine data. The signal increased in strength as stall was approached and as the engine deteriorated. This work firmly establishes the connection between observed signals in the these engines and first principles stability models. [S0889-504X(00)01603-2]
    publisherThe American Society of Mechanical Engineers (ASME)
    titleInfluence of Compressor Deterioration on Engine Dynamic Behavior and Transient Stall-Margin
    typeJournal Paper
    journal volume122
    journal issue3
    journal titleJournal of Turbomachinery
    identifier doi10.1115/1.1303817
    journal fristpage477
    journal lastpage484
    identifier eissn1528-8900
    keywordsPressure
    keywordsEngines
    keywordsCompressors
    keywordsRotors
    keywordsSignals
    keywordsFlow (Dynamics)
    keywordsStability AND Measurement
    treeJournal of Turbomachinery:;2000:;volume( 122 ):;issue: 003
    contenttypeFulltext
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    DSpace software copyright © 2002-2015  DuraSpace
    نرم افزار کتابخانه دیجیتال "دی اسپیس" فارسی شده توسط یابش برای کتابخانه های ایرانی | تماس با یابش
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