High-tech made by MTU

Pilot concepts describe the engines of future generations. Individual pilot concepts outline potential engine architectures for a certain application category believed to satisfy future market requirements. Pilot concepts specify the general direction technology development is supposed to take. MTU develops pilot con- cepts for all applications forming part of its strategic product portfolio. In the commercial domain, these are engine concepts for busi- ness and regional jets, short-, medium and long-haul aircraft. Advanced turbofan engine Today, the turbofan engine has found a home on practically all jet-propelled aircraft. How- ever, the ambitious emission goals of the ACARE Vision 2020 cannot be fully met with the turbofan concept. Any significant reduction in fuel consumption and noise can be achieved most effectively using a high bypass ratio. Fur- ther developments of turbofan engines are aimed at increasing the bypass ratio to a little above ten and optimizing individual compo- nents for better aerodynamic efficiency and lower weight. Geared turbofan engine The geared turbofan (GTF) is the engine con- cept of the future. MTU is partnering with Pratt & Whitney on demonstrator and develop- ment programs for this new engine generation. Unlike conventional turbofans, where fan and low-pressure turbine rotate on a common shaft and at the same speed, the two components are decoupled by a gearbox arranged between them. Accordingly, the large fan operates at a slower and the low-pressure turbine at a faster speed, which improves their respective efficiencies, lowers the noise level and about halves the number of stages in the turbine. Bypass ratios of 12 and beyond become a possibility and fuel burn can be considerably reduced. Orders from Mitsubishi, Bombardier and Irkut, who are going to use the geared turbofan en- gine on their emerging regional jets and short- and medium-haul aircraft, have paved the way for the successful placement of the product on the market. In late 2010, Airbus selected the GTF as one of the two engine options for its upgraded A320neo. Future commercial engines 6

High-tech made by MTU

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