| 摘要 |
A method and system for providing fuel to primary, 30, and secondary, 32, fuel nozzles in a gas turbine engine fuel system, 12, comprises generating a fuel flow and routing primary fuel from the fuel flow to a primary fuel nozzle, 30. Backpressure on the fuel flow is maintained using a valve. The valve is opened at increased fuel flow to route secondary fuel from the fuel flow to a secondary fuel nozzle, 32. The valve is progressively opened under increasing fuel flows to reduce a pressure drop across the valve produced by the secondary fuel. |
