It is a familiar twin-jet Douglas B66 fitted out with oversize, swept-back wings. But a close look shows ... may well revolutionize the aircraft industry. Designed by Swiss-born Aerodynamicist ...

a variable-sweep wing aircraft that never flew and was captured by U.S. troops in 1945. Researchers found that as the X-5’s wings swept from a 20- to a 60-degree angle, the airplane’s center ...

At Mach 1, the speed of sound, wings develop shock waves that add drag and subtract lift. When the wings are swept, they look ... as piloted X-aircraft for pure research—as distinguished from ...