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Gas turbine engine performance data validation

  • US 20080154473A1
  • Filed: 12/22/2006
  • Published: 06/26/2008
  • Est. Priority Date: 12/22/2006
  • Status: Abandoned Application
First Claim
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1. A method for validating data acquired from a gas turbine engine comprising:

  • inputting data samples corresponding to a plurality of gas turbine engine parameter measurements;

    assembling the data samples in the form of a vector;

    comparing the plurality of engine parameter measurements with corresponding estimated parameter values producing a percent Δ

    s vector;

    identifying critical engine parameters in the percent Δ

    s vector;

    observing deviations in the critical engine parameters if the engine experiences a physical fault and declaring the deviations suspect;

    determining heuristic thresholds categorizing each data parameter sample Δ

    in the percent Δ

    s vector;

    accepting the suspect data parameter sample Δ

    for analysis if a trend of a data parameter sample Δ

    is persistent over time;

    declaring the data parameter sample Δ

    an outlier if the trend of a data parameter sample Δ

    is not persistent over time;

    replacing that data parameter sample Δ

    when a data parameter sample Δ

    is declared an outlier with that parameter'"'"'s best estimate prior to the sample that is an outlier; and

    accepting and outputting persistent data for performance analysis to avoid removing data that may indicate a systematic measuring problem.

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