Which of the following describes a purpose of the accessory section?

Which of the following describes a purpose of the accessory section?

• A. Change rotor speeds for engine accessories
• B. Increase thrust
• C. Cool the exhaust
• D. Regulate fuel flow to nozzles

Answer: (A)

The accessory section provides the drive power for the engine’s ancillary equipment. It houses the accessory gearbox that is driven by the engine and reduces the high-speed motion of the core to a suitable, steady speed for accessories like fuel pumps, oil pumps, hydraulic pumps, starters, and electrical generators. This speed reduction and power supply let these components operate reliably without needing their own high-speed drive. Other options describe functions outside this area—thrust, exhaust cooling, or fuel regulation to nozzles—so they don’t reflect the purpose of the accessory section.

The accessory section provides the drive power for the engine’s ancillary equipment. It houses the accessory gearbox that is driven by the engine and reduces the high-speed motion of the core to a suitable, steady speed for accessories like fuel pumps, oil pumps, hydraulic pumps, starters, and electrical generators. This speed reduction and power supply let these components operate reliably without needing their own high-speed drive. Other options describe functions outside this area—thrust, exhaust cooling, or fuel regulation to nozzles—so they don’t reflect the purpose of the accessory section.