MIT and NASA Designing Silent Aircraft

Iddo Genuth writes "Researchers at the Massachusetts Institute of Technology Department of Aeronautics and Astronautics recently won a contract from the National Aeronautics and Space Administration to design quieter, more energy efficient, and more environmentally friendly commercial airplanes. The two-million-dollar contract from NASA is just an initial step in bringing green technologies to the sky."

Comments

Engine maintance costs.

[Zebadias]

Enclosed engines? That is not going to be as easy to maintain as the 'drop off' ones that currently sit under the wing.