...AND CHEAPER...:

This week, Boeing showcased the ecoDemonstrator, a 737-800 airplane on loan from American Airlines that contains a mish-mash of technologies that might be in airplanes down the line, including variable area fan nozzles that allow the engine fan to be optimized for different flight conditions; adaptive trailing edge technology that changes the shape of the wings, making them more aerodynamic based on where the plane is in flight; a full-scale regenerative fuel cell that "basically takes water and makes its own fuel," according to Jeanne Yu, Director of Environmental Performance at Boeing; and an engine vibration reduction system.

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