What does After Burner Fuel govern?

What does After Burner Fuel govern?

• A. Governs the correct AB fuel flow (WFR) controlling AB operation from AB start through MAX power, under all conditions within the flight envelope.
• B. Controls the main engine speed.
• C. Regulates fuel for the aircraft's auxiliary power unit.
• D. Maintains cabin pressurization.

Answer: (A)

Afterburner fuel flow control meters the fuel going to the afterburner, ensuring AB operation is properly scheduled from the moment AB is commanded up to full AB power across the entire flight envelope. This control keeps the afterburner within safe limits by matching fuel flow to the demanded AB thrust while protecting engine components (for example, managing turbine inlet temperatures and spool speeds). It operates independently of the main engine fuel control, and it isn’t responsible for APU fuel regulation or cabin pressurization.

Afterburner fuel flow control meters the fuel going to the afterburner, ensuring AB operation is properly scheduled from the moment AB is commanded up to full AB power across the entire flight envelope. This control keeps the afterburner within safe limits by matching fuel flow to the demanded AB thrust while protecting engine components (for example, managing turbine inlet temperatures and spool speeds). It operates independently of the main engine fuel control, and it isn’t responsible for APU fuel regulation or cabin pressurization.