| Abstract | Participation in a NATO sponsored Uniform Engine Test Program has enabled the Engine Laboratory to upgrade, and improve its measurement, and analysis techniques, for assessing gas turbine engine performance. Airflow measurements gathered during J57-19W engine testing were calculated based on total pressure, temperature and wall static pressure measurements, within the annular measuring section. Repeat tests were performed to assess data quality, accuracy and test to test repeatability. Data comparisons were used to examine the inlet pressure profile, and support numerical flow analysis techniques being developed in the Gas Dynamics Laboratory. Results showed the inlet pressure data to within the predicted measurement uncertainty, demonstrating good data scan repeatability. Wall static pressure data results indicated that the inlet pressure profile was non-axi symétrie, and less influenced by the different engine power settings for each run, than when compared on a run-to-run basis. |
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