In 2011, NASA comes up with a plan to integrate a fuel efficient airplanes in their line-up that produce less noise and Cleaner exhaust. Three aircraft manufacturing companies Lockheed Martin, Northrop Grumman and The Boeing delivered their demos to NASA that will likely to be operational in 2025. Moreover, each aircraft will fly with a speed of sound; cover the area of 7000 miles and carry the load of 50,000 pounds to 100,000 pounds either passengers or cargo. Environment Clean Generations
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