Just about every fuel-saving aerodynamic efficiency has been wrung out of existing aircraft. The next generation ... wing models use a conventional passenger tube, which is aerodynamically ...

The Flying-V, an experimental aircraft that promises significantly greater fuel efficiency over more conventional commercial jet designs, is moving towards a larger, more detailed version since ...

aircraft with a wingspan of 88 feet (27 meters) boasts a lighter structure than similar models, and a powerful engine. Its fuel efficiency results in 69 grams (2.4 oz) of CO2 per seat, per km ...