Determination of steady state gas turbine operation

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Proceedings titleASME Turbo Expo 2012: Turbine Technical Conference and Exposition
ConferenceASME Turbo Expo 2012: Turbine Technical Conference and Exposition, GT 2012, June 11-15, 2012, Copenhagen, Denmark
Pages107118; # of pages: 12
SubjectComputational time; Confidence interval; Engine operations; Engine performance; Indoor test cells; Optimal samples; Recursive methods; Turbine operation; Exhibitions; Jet engines; Gas turbines
AbstractRepeatable measurement of engine performance requires the system to be near steady state. A technique is presented to assess how close engine operation is to steady state. It estimates the rate of change of the assessed parameter across the sample time and provides an associated confidence interval. This allows a minimum amount of test time to characterize performance and provides consistent criteria to assess steady state. The technique can either be used online to determine when to take a steady state point or to find the optimal sample from a given data set. To make the technique feasible during testing a recursive method is developed to minimize the computational time. The technique is demonstrated on known functions with random noise to benchmark its capabilities. This is followed by a demonstration on test data from a small turbo jet engine operated in an altitude facility, a turboprop on an outdoor test stand and an after-burning turbofan in an indoor test cell.
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PublisherAmerican Society of Mechanical Engineers
AffiliationAerospace; National Research Council Canada
Peer reviewedYes
NPARC number21270182
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Record identifierca6b9347-0c8b-4220-b6eb-8bb45ac224c4
Record created2014-01-08
Record modified2016-05-09
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