Gas turbine engine with means of driving the turbine accessory drive gearbox assembly and method of assembling said engine

摘要

The engine has a high pressure rotor (2) and a low pressure rotor (1) mounted in bearings supported by an intermediate casing (50), and a driving unit provided with a high pressure driving pinion (9) connected to the high-pressure rotor for driving one of radial transmission shafts (11, 12). The driving unit has a low pressure driving pinion (7) connected to the low pressure rotor upstream of the high pressure rotor and driving the other shaft. The low pressure driving pinion is supported in the intermediate casing by an axial positioning bearing (54) i.e. ball bearing. An independent claim is also included for a method for mounting a twin-spool gas turbine engine.