Test Techniques for Obtaining Off-Nominal Compressor Data During Engine Tests

Document Number: 740822

Date Published: February 1974

Author(s):
Thomas J. Biesiadny - Lewis Research Center, NASA

Abstract:
Several unique techniques and related devices are in use at the Lewis Research Center for off-design testing of fan and compressor sections in full-scale jet engines. The devices presented not only permit a wide range of experimental conditions but also minimize downtime for hardware changes. The techniques involve use of such devices as inlet pressure distortion jets, a hydrogen burner for inlet temperature distortions, fan back pressure jets to simulate a variable area nozzle, and either an inflow-outflow bleed system or a fuel spurt system to alter compressor discharge pressure.

Product Status: In Stock

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