26 Gas Turbines Fuel Systems – LMS

Results

improve thermal efficiency.

prevent icing-up of the LP filter.

improve atomisation at low temperature.

improve the specific fuel consumption.

possible with "CROSSFEED" open and tank 1 pumps "OFF" and tank 2 pumps "ON"

impossible without causing the APU stop

impossible because there is no fuel in center tank.

possible with "CROSSFEED" open and tank 2 pumps "OFF"

300 to 500 psi

5 to 10 psi

20 to 100 psi

3000 to 5000 psi

The fuel supply is isolated from the engine by pilot action

The fuel supply is disconnected by a quick release coupling

An automatic shut-off valve is moved to the closed position controlled by the fire sensing system

The fuel supply system is protected by an automatic fire extinguishing system

N2, compressor discharge pressure, compressor inlet temperature, fuel shut-off, thrust lever angle

N2, bypass ratio, EPR, fuel shut-off, thrust lever angle

N1, N2, bypass ratio, fuel shut-off, thrust lever angle

N2, turbine inlet temperature, fuel shut-off, generator, thrust lever angle

measured at the outlet of the high pressure fuel pump.

measured in the line between the fuel control unit and the engine burners.

not used on aircraft.

measured in the line between the booster pump and the engine.

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