William F Phipps

US Patent:

41865561, Feb 5, 1980

Filed:

May 29, 1975

Appl. No.:

5/581752

Inventors:

William C. Lowry - West Chester OH
William L. Phipps - Cincinnati OH

Assignee:

General Electric Company - Cincinnati OH

International Classification:

F02C 902

US Classification:

60 3903

Abstract:

Turbine engine power extraction and acceleration capabilities are enhanced by the sensing of the amount of air that is bled off from a compressor, and biasing the acceleration schedule in relation thereto. In this way the engine shaft power extraction and/or rotor acceleration capability can be maximized by enriching the acceleration fuel schedule when compressor bleed air is extracted. The selected degree of enrichment may be applied so as to consume the entire stall margin gain, whereby the engine is made to follow the same acceleration trajectory on a compressor map notwithstanding the degree of compressor bleed, or the degree of enrichment may be applied so as to obtain the desired performance level while retaining a portion of the gained stall margin.