Patent ID: 9217374
Filing Date: 2015-12-22
Classification: F01D,F02C,F05D,Y02T

Abstract:
1. A structural unit for an aircraft engine, comprising: at least one fuel pump of a fuel circuit, and at least one hydraulic fluid pump of a hydraulic fluid circuit, a single coupling for coupling the structural unit directly to one of a plurality of accessory gearbox shafts of an accessory gearbox driven by a drive shaft of the engine, the accessory gearbox housing the plurality of accessory gearbox shafts extending in a circumferential direction of the engine, the accessory gearbox shafts arranged substantially parallel to an axis of the engine, with one of the plurality of accessory gearbox shafts being driven directly by the drive shaft and a remainder of the plurality of accessory gearbox shafts being driven indirectly by the drive shaft via the one of the plurality of accessory gearbox shafts being driven directly by the drive shaft; a common casing disposed within a nacelle; wherein the at least one fuel pump and the at least one hydraulic pump are both drivingly connected to the single coupling and are both driven by a power transmission from the accessory gearbox shaft through the single coupling; wherein the at least one fuel pump and the at least one hydraulic fluid pump are arranged inside the common casing and the common casing directly supports the at least one fuel and the at least one hydraulic fluid pump.