In gas turbine engines, what is the role of the accessory section?

The accessory section of a gas turbine engine is a critical area designed to accommodate various auxiliary systems that support the operational functionality of the engine. This section typically houses components such as fuel pumps, generators, and hydraulic pumps, which are essential for the overall performance and reliability of the engine during operation.

By integrating these systems into the accessory section, the engine design allows for efficient management of power and resources, ensuring that necessary functions are performed without significantly complicating other aspects of the engine structure. For instance, having the fuel pump located in the accessory section ensures a direct supply of fuel to the combustion chamber at the appropriate pressure, which is vital for effective fuel atomization and combustion.

Additionally, integrating navigational instruments into the accessory section ensures pilots have accurate data related to engine performance without impacting the core engine operation. Therefore, the role of the accessory section is multifaceted, focusing on the support and integration of essential auxiliary systems that enhance the overall functionality and safety of gas turbine engines.