What is the function of the accessory gearbox (AGB) on a gas turbine engine?

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Prepare for the Gas Turbine Systems Technician – Mechanical A School Test 1. Study with multiple choice questions that come with hints and explanations. Ace your exam!

Multiple Choice

What is the function of the accessory gearbox (AGB) on a gas turbine engine?

Explanation:
The accessory gearbox provides a dedicated drive hub that takes mechanical power from the engine’s front drive and uses it to run the engine’s ancillary equipment. By driving items such as the fuel pump, oil pump, starting motor, generators, and hydraulic pumps, it keeps these systems operating without loading the core turbine directly. This arrangement also helps keep accessory speeds consistent as the engine’s core speed changes, and it provides a convenient location for lubrication and maintenance of those drives.

The accessory gearbox provides a dedicated drive hub that takes mechanical power from the engine’s front drive and uses it to run the engine’s ancillary equipment. By driving items such as the fuel pump, oil pump, starting motor, generators, and hydraulic pumps, it keeps these systems operating without loading the core turbine directly. This arrangement also helps keep accessory speeds consistent as the engine’s core speed changes, and it provides a convenient location for lubrication and maintenance of those drives.

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