Method and apparatus for promoting a surge condition in a gas tu

Details Method and apparatus for promoting a surge condition in a gas tu Method and apparatus for promoting a surge condition in a gas tu

1981-07-24

1984-05-22

Casaregola, Louis J.

Power plants

Combustion products used as motive fluid

60 3925, 60 39281, F02C 928

Patent

active

044493584

ABSTRACT:
A surge condition in a stalled gas turbine engine is promoted by modulating a time-varying component of an operating parameter of the gas turbine engine, such as the fuel flow to the combustor plenum of the engine, substantially in phase with a time-varying component of the pressure in the combustor plenum, thereby allowing normal operation of the engine to resume during the surge condition by eliminating the stall-inducing agent.

REFERENCES:
patent: 3002349 (1961-10-01), Arnett et al.
patent: 3006144 (1961-10-01), Arnett et al.
patent: 3053047 (1962-09-01), Bodemuller
J. A. Webb, Jr., Oral Mehmed & Carl F. Lorenzo, "Single-Stage Electrohydraulic Servosystem for Actuating an Airflow Valve with Frequencies to 500 Hertz", NASA Technical Paper 1678, Aug. 1980.
E. M. Grietzer, "Surge and Rotating Stall in Axial Flow Compressors; Part I: Theoretical Compression System Model, "Transactions of the ASME, J. Engrg. for Power, vol. 98, No. 2, Apr. 1976, pp. 190-198.
E. M. Grietzer, "Surge and Rotating Stall in Axial Flow Compressors; Part II: Experimental Results & Comparison with Theory", Transactions of the ASME, J. Engrg. for Power, vol. 98, No. 2, Apr. 1976, pp. 199-217.
S. Drabek, "Stall Control", Symposium on Compressor Stall, Surge, and System Response, presented at the Joint Conference of the ASME, Gas Turbine & Hydraulic Divs., held in Houston, Texas, Mar. 6-9, 1960, pp. 23-26.

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