Rolls-Royce starts power runs of new UltraFan gearbox

Rolls-Royce has started power runs of the new gearbox for the first time, marking another significant step in the development of its new UltraFan engine design. UltraFan, which will be available from 2025, will offer a 25% fuel efficiency improvement over the first generation of Rolls-Royce Trent engine, with power scalable for widebody or narrowbody aircraft.The gearbox is a vital component of the UltraFan design, offering efficient power over a wide range of thrust levels, the ability to drive larger fan sizes, while also reducing weight.The tests are taking place at the Rolls-Royce Power Gearbox (PGB) facility in Dahlewitz, Germany, where the gearbox will ultimately run at up to 100,000 horsepower – the equivalent of more than 100 Formula 1 cars. The tests follow successful runs on an Attitude Rig last year.