TP400-D6

The TP400 is an engine of the European Europrop International (EPI) Consortium and was chosen by the Airbus Military Company to motorise the A400M European military transport aircraft. Production of the engines is foreseen for the aircraft for Germany, France, Great Britain, Spain, Turkey, Belgium and Luxembourg.

Avio designed and produces the propeller gearbox, the largest ever produced in then western world.

Main engine characteristics

Thrust range	Three-shaft turboprop
Power Output	11.000 shp at sea level
Weight	1.860 kg (dry)
Pressure/compression ratio	25
Propeller	5.3 m
Max Propeller Speed	840 rpm

Leaflet - TP400-D6

Avio's module details

Mechanical Power Transmission

The power transmission is a very complex component with cutting-edge technological requirements, particularly in terms of weight and efficiency.

Main features of the power reducer:

output power: ca. 8,000 kW
output torque: ca. 100 kN*m
reduction ratio: ca. 9.5:1
very high power density and efficiency
reliability comparable to the “best in class” transmissions for commercial turboprops

Innovative technological elements of Avio’s reducers:

weight: ratio between propeller output torque and weight with respect to current applications. Gears with integral bearing races; “Flexible” architecture tolerant to misalignments and deformations induced by the propeller; high mechanical resistance of gears materials
high efficiency: power loss smaller than 1% of transmitted power of super-finishing methods for teeth and bearing housings
operative costs reduction and reliability improvement

Products

Mechanical Power Transmission

Applications

A400M