NASA isn't just interested in extra-terrestrial exploration, but in pushing the boundaries of atmospheric flight as well, which is why it's just awarded $100,000 in funding for the supersonic plane concept shown above. As you can see, the symmetrical plane is basically all wing, and that's because it has two different configurations based on how fast you want to go. For normal, subsonic flight, a plane needs a decent wingspan to get off the ground and sustain flight at lower speeds. But, when you want to go supersonic, large wings become a bit of a drag, which is where the concept's bi-functional design comes in.
Engadget , NASA awards $100,000 grant for sideways supersonic plane concept, sonic boom not included
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trendygadgets, NASA awards $100,000 grant for sideways supersonic plane concept, sonic boom not included