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SCRAMJETSupersonic Combustion Ramjet
References in periodicals archive ?
Even so, six years later he still was saying, "I've never seen a scramjet producing net thrust.
In contrast, the Air Force's version of the scramjet is designed to run on JP-7 fuel, a more logistically supportable fuel than hydrogen.
With no moving parts, the scramjet engine burns fuel with the compressed, superheated air encountered at Mach 5--the muzzle velocity of existing tank guns.
Following rocket motor ignition, the Hyper-X launch vehicle, carrying the X-43A scramjet, accelerated to a velocity of approximately 7,000 miles per hour, or Mach 10 (ten times the speed of sound), and reached an altitude of 110,000 feet.
7-meter-long Hyper-X aircraft (also known as X43A) was to demonstrate scramjet propulsion, but it failed when a rocket malfunctioned.
Designed and built in Brisbane, SCRAMSPACE is a $14 million, three-year research project to collect valuable data from an 8600km/h (Mach 8) high-speed test flight of a hypersonic scramjet.
This demonstration of a practical hypersonic scramjet engine is a historic achievement that has been years in the making," said Darryl Davis, president of Boeing Phantom Works, in a statement.
Air Force Research Laboratory's Propulsion Directorate, Wright Patterson Air Force Base; George Thum, Pratt & Whitney Rocketdyne; and Joseph Vogel, Boeing Phantom Works) developed an unmanned, hypersonic vehicle with a scramjet engine capable of controlled flight for a substantial amount of time and distance.
Carried to 109,000 feet by a Pegasus rocket launched from beneath a B-52 mother ship, the X-43A was powered by an experimental scramjet engine, which draws oxygen for combustion from the atmosphere rather than carrying it like a rocket ship.
The Hyper-X launch vehicle uses a modified first stage rocket motor, originally designed and flight-proven aboard Orbital's Pegasus(R) space launch vehicle, to accelerate NASA's X-43A air-breathing scramjet to seven times the speed of sound.
It is unfortunate that a problem with this subsystem caused a termination before we could light the scramjet engine," the Telegraph quoted Charlie Brink of the Air Force Research Laboratory at the Wright-Patterson Air Force Base in Ohio, as saying.
The Pratt & Whitney Rocketdyne scramjet engine is the world's first air breathing hydrocarbon-fueled and -cooled propulsion system capable of powering vehicles at hypersonic speeds.