Model of bleed valve steady-changing control law in PW4077D aero engine based on QAR data

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Model of bleed valve steady-changing control law in PW4077D aero engine based on QAR data

CAO Hui-ling¹，SONG Qiang²，LUO Li-xiao¹，NIU Jun¹，XUE Peng¹

(1. College of Aeronautical Engineering,CAUC,Tianjin 300300,China;2. Xi'an Aero-Engine PLC.,Xi'An 710021,China)

Received:2012-06-06 Revised:2012-09-24 Online:2013-02-23 Published:2014-05-23

Abstract

Abstract:

After ten trouble-free flights data analyzed and disposed,the model of bleed valve control law was set up by regression analysis in many flight phases. As the opening of valve is affected by many factors,it was necessary to assort data for discussion when modeling. All these models had passed through the test of significance analysis. In regression estimating,they could forecast the opening of valve accurately to some extent. The mathematical models that the thesis got could be valuable to the theory and applications of condition monitoring and fault diagnosis in aero-engine.

Key words: aero engine, PW4077D, 2.5 bleed valve, QAR, regression analysis

CLC Number:

V235.13

CAO Hui-ling，SONG Qiang，LUO Li-xiao，NIU Jun，XUE Peng. Model of bleed valve steady-changing control law in PW4077D aero engine based on QAR data[J]. .

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Model of bleed valve steady-changing control law in PW4077D aero engine based on QAR data

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