Patent ID: 8979705
Filing Date: 2015-03-17
Classification: F01D,F02C,F05D,Y02T,Y10T

Abstract:
1. A system for controlling a starter/generator of an aircraft engine, the system comprising: an accessory gearbox (AGB) of fixed gear ratio for coupling mechanically to a turbine shaft of the engine, enabling the engine to be started; a starter/generator mechanically coupled to the AGB via a gearbox having multiple gear ratios and interposed between the AGB and the starter/generator; and means for controlling a change in the gear ratio of the gearbox as a function of the mode of operation of the starter/generator, wherein the AGB comprises a set of gearwheels housed in a casing that are driven in rotation by a power transmission shaft which is mechanically coupled to the turbine shaft, the gearwheels being mechanically coupled to accessories including the starter/generator and at least one pump.