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What is the operating pressure of a booster pump in the fuel supply system of a gas turbine aircraft?
  • A
    300 psi to 500 psi
  • B
    3000 psi to 5000 psi
  • C
    20 psi to 100 psi
  • D
    5 psi to 10 psi

The booster pump is a lower pressure pump situated in the main fuel tanks. It is electrically driven, and its purpose is to deliver the fuel under positive pressure (20 psi to 100 psi) and duct it further down the fuel line until reaching the HP pump and ultimately the engines. The booster pump will prevent vapor locking and cavitation of fuel by maintaining a decent supply of low-pressure fuel.

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