Experimental techniques for actuation, sensing, and measurement of rotating stall dynamics in high-speed compressors
- 30 May 1995
- proceedings article
- Published by SPIE-Intl Soc Optical Eng
- p. 166-185
- https://doi.org/10.1117/12.210516
Abstract
This report describes the experiemental design and validation of sensing and actuation hardware to be incorporated into a NASA Lewis Research Center high-speed compressor test rig. The purpose of the control-augmented rig will be to investigate the dynamics of rotating stall in high-speed compressors, and to demonstrate stabilization of the perturbations which lead to rotating stall and surge. The overall experimental design is first described. Then the design of jet injection actuation is presented, including mechanical/fluid mechanical design rules, bandwidth limitations imposed by the electromagnetic valve, and by the fluid mechanics, and experimental validation of the actuation system. Specialized probes for 3D high-response flow measurements are then discussed, along with experimental validation of their performance. Finally, procedures for modeling and measurement of aerodynamic oscillation modes will be described.Keywords
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