Experimental techniques for actuation, sensing, and measurement of rotating stall dynamics in high-speed compressors

Roland G. Berndt; Harald J. Weigl; James D. Paduano; Alan H. Epstein

doi:10.1117/12.210516

30 May 1995 Experimental techniques for actuation, sensing, and measurement of rotating stall dynamics in high-speed compressors

Roland G. Berndt, Harald J. Weigl, James D. Paduano, Alan H. Epstein

Author Affiliations +

Proceedings Volume 2494, Sensing, Actuation, and Control in Aeropropulsion; (1995) https://doi.org/10.1117/12.210516
Event: SPIE's 1995 Symposium on OE/Aerospace Sensing and Dual Use Photonics, 1995, Orlando, FL, United States

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.

Citation Download Citation

Roland G. Berndt, Harald J. Weigl, James D. Paduano, and Alan H. Epstein "Experimental techniques for actuation, sensing, and measurement of rotating stall dynamics in high-speed compressors", Proc. SPIE 2494, Sensing, Actuation, and Control in Aeropropulsion, (30 May 1995); https://doi.org/10.1117/12.210516

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