Processing of Engine Data for Development of Turbojet Engine Analyzer. Part II. Processing of J79-15 Data from a 500 Hour Cell Test

摘要

The report describes the results of processing thermodynamic performance sensitive parameters, measured on a 500 hour cell test, of a J79-15 engine to estimate its condition. The results of the cell test confirm the encouragement derived from previous flight test data. Minor deteriorations within the estimated allowable limits were observed on the compressor and turbine measurements, which confirms the inspection findings at the conclusion of the test. More data on more engines is required to establish more firmly that the operation problems in service will be detected by thermodynamic measurements and to define with greater assurance the parameter limits indicative of deterioration requiring maintenance. (Author)