CF6-C5

The CF6 engine motorises, besides many commercial aircraft, the C-5 GALAXY RERP aircraft. The CF6 is also used on Italian and Japanese B767 transport aircraft, the US President’s Air Force One, the E-4B and the AWACS B767. Aeroderivative gas turbines have also derived from the CF6 for marine and industrial use such as the LMS100 and LM6000. Moreover, the engine was used on the KC-10 aircraft. The CF6 is a high by-pass ratio engine that has achieved 325 million flight hours from its entry into service in 1971.

Avio, partner of GE, is responsible for the production of the transfer gearbox, accessory gearbox, inlet gearbox and some components of the low-pressure turbine (stator stages, rotor disks).

Main engine characteristics

Air Flow Rate:	790 kg/s
Compression Ratio:	30.4
Thrust:	52.500-61.500 lb

Avio's module details

Low-Pressure Turbine

Avio is responsible for the production of some low-pressure turbine components (the 5-stator stages, and rotor disks for both the C2 and E1 versions).

The CF6 is a turbo-fan engine that initially has a single-stage fan supplied by a 5-stage low-pressure turbine, a 16-stage compressor supplied by a 2-stage high-pressure turbine. The combustor is of an annular type.

The baseline architecture of the CF6-80 low-pressure turbine module derives from the CF6-50, despite having different mechanical features.

Accessory Drive Train

Avio is responsible for production of the accessory drive train, a sector in which Avio is world leader with over 50% of Market Share.

The accessory drive train includes:

inlet gearbox: takes motion from the fan and transfers it through the radial shaft to the transfer gearbox
transfer gearbox: transfers motion from the radial shaft to the horizontal shaft accessory gearbox: transfers motion from the horizontal shaft to the 7 accessories of the engine and aircraft

Products

Low-Pressure Turbine

Accessory Drive Train

Applications

C-5 Galaxy rerp