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  • 1
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    CF 6 engine diagnostics (1981)
    In:  CASI
    Details
    Publication Date: 2016-06-07
    Description: A summary of the activities which led to defining deterioration rates of the CF6 family of engines, a description of what was learned, and an identification of means of conserving fuel based upon the program findings are presented. The program to define the deterioration levels and modes for the CF6 family of engines involved four distinct phases: analysis of inbound engine test results, analysis of airline cruise data, analysis of airline test cell data resulting from testing of refurbished engines, and inspection of engine hardware.
    Keywords: AIRCRAFT PROPULSION AND POWER
    Type: NASA. Lewis Res. Center Aircraft Engine Diagnostics; p 1-17
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 2
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    Summary report for CF6 jet engine diagnostics program (1982)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: Cockpit cruise recordings and test cell data in conjunction with hardware inspection results from airline overhaul shops were analyzed to define the extent and magnitude of performance deterioration of the General Electric CF6 high bypass turbofan engines. The magnitude of Short Term deterioration from the Long Term was isolated and the individual damage mechanisms that were the cause for the majority of the performance deterioration were identified. A potential for reduction in compressor clearance and a potential for improvement in turbine roundness, which corresponds to cruise SFC reductions of 0.38 and 0.36 percent, respectively, were identified.
    Keywords: AIRCRAFT PROPULSION AND POWER
    Type: NASA-CR-165582 , NAS 1.26:165582 , R81AEG654
    Format: application/pdf
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    NASA TECHNICAL REPORTS
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