Measurement Uncertainty Within the Uniform Engine Test Programme

Abstract : The Uniform Engine Test Program is one of the most extensive experimental and analytical programs ever sponsored by AGARD. The program was proposed by the Propulsion and Energetics Panel and approved by AGARD in 1980. The objectives of the program were: To provide a basis for upgrading the standards of turbine engine testing within AGARD countries by comparing test procedures, instrumentation techniques and data reduction methods, thereby increasing confidence in performance data obtained from engine test facilities. To compare the performance of an engine measured in ground level test facilities and in altitude facilities at the same non-dimensional conditions and establish the reasons for any observed differences. The UETP involved testing of two turbojet engines in five countries (US, Canada, France, Turkey and UK) using four altitude test facilities and four ground-level test beds. The testing program began in 1981 and extended over a period of approximately seven years, with the supporting data analysis program progressing concurrently on a cooperative multi-national basis. The program has an historic importance in that for the first time it has made possible test program over a range of altitudes and flight speeds, in different facilities, and using different methods of data acquisition and processing.