NASA unveils three concept designs for aircraft that could be ready to fly by 2025.
NASA appears to want development of a line of super-planes that are larger, faster, quieter and burn fuel slower and cleaner than today’s commercial aircraft. The three designs — from Northrop Grumman, Boeing, and Lockheed Martin — are part of a set of contracts to study advanced concept designs for airplanes that will eventually replace the planes flown today. “Each design has to fly up to 85 percent of the speed of sound; cover a range of approximately 7,000 miles; and carry between 50,000 and 100,000 pounds of payload, either passengers or cargo” all while producing “less noise, cleaner exhaust and lower fuel consumption.”

Other concepts at various stages of development below:

resources:
NASA press article
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http://www.nasa.gov/topics/aeronautics/features/flight_2025.html