Boeing, Rolls-Royce, RUAG Aerospace and Deharde Maschinenbau to Investigate open-fan propulsion technology
Boeing, Rolls-Royce, RUAG Aerospace and Deharde Maschinenbau have entered into a collaborative research agreement to explore the potential of fuel-efficient open-fan (open rotor) propulsion technology for future commercial airplanes. Using technologies and techniques contributed by each of the parties, tests of a model concept airplane with open-fan engines are planned for early in 2010 at …