Questions tagged [accessory-drives]

The mechanisms by which aircraft engines power ancillary engine equipment, such as the engine-driven generators and oil and hydraulic pumps.

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What is an accessory gearbox?

Many 737 engines have an accessory gearbox on the 9'o clock position, which is part of why the engine has a flat-bottomed shape. What exactly is an accessory gearbox?
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What is the different between an aircraft engine gearbox and an aircraft engine transmission?

For an aircraft engine, what is the difference between a gearbox and a transmission? I was of the understanding that a transmission is a type of gearbox. For example, in a helicopter, a transmission ...