When supersonic travel inevitably returns to the skies, the airplanes are going to look a lot different. At least one design harks back to the early days of aviation with a biplane design, rather than a sleek delta-winged jet like the Concorde. This shape can apparently produce much less drag and therefore much less noise at supersonic speeds, MIT engineers say.
True to its aeronautic roots, NASA is evaluating a new generation of supersonic airplane designs to see whether they can reduce sonic-boom levels.
Boeing and Lockheed Martin have submitted futuristic concepts that look similar to the Concorde, but aim to muffle the annoying and potentially damaging sonic boom problem.