Fuel and actuation system for gas turbine engine

摘要

A fuel system for an aircraft comprises a boost pump, a main fuel pump and a motive pump. The boost pump receives fuel from a storage unit. The main fuel pump receives fuel from the boost pump and delivers fuel to a distribution system. The motive fuel pump receives fuel from the boost pump, routes fuel through the storage unit, and delivers fuel to an actuator. A method for delivering fuel in an aircraft comprises pumping fuel from a fuel tank to a distribution system using a main pump, pumping fuel from a fuel tank to an actuator using a motive pump, and routing fuel from the actuator to the main pump.

主权项

1. A method for delivering fuel in an aircraft, the method comprising:
pumping fuel from a storage unit to a boost pump; pumping fuel from the boost pump to a distribution system using a main pump, wherein a first boost pump line fluidly connects an outlet of the boost pump to an inlet of the main pump; pumping fuel from the boost pump to an actuator using a motive pump, thereby providing pumped fuel to the actuator, wherein actuation power for the actuator is provided by the pumped fuel, wherein a second boost pump line fluidly connects the outlet of the boost pump to an inlet of the motive pump; routing fuel from the actuator to the main pump; and routing fuel from the motive pump to an ejector within the storage unit to circulate fuel within the storage unit.