The power output flange is connected via which component?

• A. Reduction gearbox
• B. Fuel control unit
• C. Starter motor
• D. Combustion chamber

Answer: (A)

The key idea is how mechanical power is taken from a turbine engine: it’s not used directly at the high turbine speed, but is channeled through a gearbox to provide the right speed and torque. The power output flange is the connection point that mates to the reduction gearbox, so engine power can be transmitted to the gearbox and then to the propeller or other driven components. The reduction gearbox lowers the RPM and increases torque to suit the driven loads. The other parts have different roles: the fuel control unit meters fuel, the starter motor initiates rotation during start-up, and the combustion chamber is where fuel burns.