How Hypersonic Planes Work - Introduction ( Pt 1 )
NASA's experimental space plane, the X-43A, set a new speed record for aircraft on November 16, 2004. In the unmanned test flight, the plane reached Mach 10 -- 10 times the speed of sound, or about 6,600 miles (10,600 kilometers) per hour. This flight broke the previous speed record of Mach 7, set in March 2004 by the X-43A in a previous test flight
What sets the X-43A apart from other rocket-powered aircraft is that it is powered by a scramjet engine. Instead of using onboard oxygen to combust the hydrogen fuel, the scramjet scoops up oxygen as it travels through the atmosphere. By eliminating the need for onboard oxygen, cutting the weight of the spacecraft, the X-43A could lead to cheaper Earth-to-orbit space travel.
Photo courtesy NASA
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