Last year, the US space agency awarded contracts to three teams - Lockheed Martin, Northrop Grumman and Boeing - to study advanced concept designs for aircraft of the future.
Their brief was a difficult one: to create aircraft that delivered less noise, cleaner exhaust and lower fuel consumption than today's planes, while still being able to achieve speeds up to 85 per cent of the speed of sound; cover a range of approximately 11,000 kilometres; and carry between 50,000 and 100,000 pounds (22,600 and 43,200 kilograms) of payload, either passengers or cargo.
"Each aircraft has to be able to do all of those things at the same time, which requires a complex dance of tradeoffs between all of the new advanced technologies that will be on these vehicles," NASA said on its website.
The only thing all three had in common was the disappearance of engines from the outer wings. Both Boeing and Lockheed Martin moved engines to the tail of the plane, while Northrop Grumman's engine sat between the two fuselage.
NASA said the companies would continue to work on the design this year.
“For the rest of this year, each team will be exploring, testing, simulating, keeping and discarding innovations and technologies to make their design a winner," NASA said.
The project is sponsored by NASA's Environmentally Responsible Aviation Project. It follows on from an earlier project that looked 10 years further in to the future, inviting aircraft designers to offer concepts for how we might be flying in 2035.
See More Photos: The aircraft of the future
Original Article: http://www.theage.com.au/travel/travel-news/nasa-unveils-aircraft-of-the-future-20110118-19uus.html