06 May 2013

Hispano-Suiza (Safran) is the French supplier for the Power Transmission System of the A350 XWB Engine.

The Trent XWB-84 engine (Rolls-Royce) set to fit out the new Airbus A350 XWB, passed certification on February 7, 2013. Hispano-Suiza (Safran) has been chosen to supply the engine’s entire power transmission system.

The power transmission system was specially designed to guarantee optimal performance in the A350XWB’s engine, the Trent XWB-84. It includes the very latest in manufacturing-process and supply-chain-management innovation. It is divided into six main components: the AGB (Accessory Gear Box), the TGB (Transfer Gear Box), the angle driveshaft, the IGB bevel gears (Internal Gear Box), the SAGB (Step Aside Gear Box), and the oil tank, supplied by the Techspace Aero (Safran) subsidiary, ACI.

“The new contract is just the next step forward in our almost 30-year relationship with Rolls-Royce. When Hispano-Suiza and Rolls-Royce signed the agreement in 2008, we became the exclusive supplier for every version of the Airbus A350 XWB’s power transmission system.” said Yannick Bonnaire, Hispano-Suiza’s Vice President for Programs.

“The contract covers the entire life cycle, and includes both the initial supplies and maintaining them during operations. That’s why our equipment has to be reliable.”


“Hispano-Suiza is supplying the full chain, made up of six major components, from the high-pressure and radial driveshaft bevel gears (which recover the power needed on the shaft) right down to the accessory gearbox, including the gears. Our system can develop 800 kW of power, and is fully in line to meet the performance requirements of next-generation engines. Its behavior has already been validated in all flight phases on the test bench at Hispano-Suiza’s production site in Colombes.” said Bonnaire.

“Ramping up production to two or three times what we were used to on our last programs is going to be a major challenge.”
Based on the press release “Hispano-Suiza On Board the A350 XWB” published by Safran

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