Supersonic flight, a longtime dream for makers and owners of private planes, is inching closer to reality.
Nine years after the last trip of the Concorde jetliner, the quest for speed without window-rattling sonic booms is spurring research by billionaire Robert Bass, General Dynamics's Gulfstream, Boeing, Lockheed Martin, the National Aeronautics and Space Administration and others.
The efforts signal that the time may finally be nearing for corporate aircraft flying faster than sound, about 1207 kilometres per hour at sea level. Technological leaps since the Concorde's development in the 1960s are converging with the willingness of globe-trotting chief executive officers to pay more for ever-bigger and longer-range jets.
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