While most of us are busy debating the relative merits of pocket-sized technology, NASA is mulling over ideas on a much grander scale. Submitted as part of the Administration's research into advanced aeronautics, the above Lockheed Martin-designed aircraft is just one vision of how air travel might be conducted in the future. It's a supersonic jet employing an inverted-V engine-under-wing configuration, which apparently helps to significantly reduce the resultant sonic boom. Other than that, we're only that "other revolutionary technologies" will provide for the achievement range, payload and -- significantly -- environmental goals. So that s
