The RTX group has completed the preliminary design review for the hybrid-electric propulsion demonstrator the group is developing under the SWITCH project funded by the European Union’s Clean Aviation initiative. The company reported the milestone on Monday as part of ongoing work with multiple partners to demonstrate the potential for hybrid-electric and water-enhanced turbofan technology to improve fuel-burn efficiency and reduce emissions on future short- and medium-range airliners.
SWITCH stands for Sustainable Water Injecting Turbofan Comprising Hybrid-Electrics, and the consortium behind the project encompasses RTX companies Pratt & Whitney and Collins Aerospace, as well as MTU Aero Engines, GKN Aerospace, and Airbus. The demonstrator combines a Pratt & Whitney Geared Turbofan engine with a pair of Collins’ two-megawatt electric motor generators mounted on the low and high spools of the engine.
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