Claims
- 1. A method for controlling the pressured drop across a combustor disposed between a compressor and a turbine in a gas turbine engine as the power level of the engine changes, comprising the steps of:operating said engine at a first power level; collecting pressurized air from said compressor in a plenum; flowing a first portion of said air through dilution holes in a wall of said combustor into a dilution zone upstream of said turbine; flowing a second portion of said air through a conduit extending from said plenum to an injector; mixing the air exiting said conduit with fuel in said injector and igniting the mixture to form a hot gas in said combustor upstream of said dilution zone; diverting a portion of the air in said conduit around said injector and into said combustor near said dilution zone; and controlling the magnitude of said diverted portion to achieve a first desired pressure drop across said compressor.
- 2. The method of claim 1 further comprising the steps of;operating said engine at a second power level; and adjusting the magnitude of said diverted portion to achieve a second desired pressure drop across said combustor.
- 3. The method of claim 2 wherein said second desired pressure drop equals said first desired pressure drop.
REFERENCE TO COPENDING APPLICATION
This is a division of application Ser. No. 08/966,393 filed Nov. 7, 1997 now U.S. Pat. No. 6,070,406, which claims the benefit of U.S. Provisional Application Ser. No. 60/031,780 filed Nov. 26, 1996.
US Referenced Citations (3)
Provisional Applications (1)
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Number |
Date |
Country |
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60/031780 |
Nov 1996 |
US |