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Faster Than A Speeding Bullet: Guinness Recognizes NASA Scramjet

Date:
June 23, 2005
Source:
Dryden Flight Research Center
Summary:
NASA has been officially recognized for setting the speed record for a jet-powered aircraft by Guinness World Records. NASA set the record in November during the third and final flight of the experimental X-43A scramjet (supersonic-combustion ramjet) project. The X-43A demonstrated an advanced form of air-breathing jet engine could power an aircraft nearly 10 times the speed of sound.

It's official. The new world speed record for a jet-powered aircraft, set by NASA in November, has been officially recognized by Guinness World Records.
Credit: Image courtesy of Dryden Flight Research Center

NASA has been officially recognized for setting the speed record for a jet-powered aircraft by Guinness World Records.

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NASA set the record in November during the third and final flight of the experimental X-43A scramjet (supersonic-combustion ramjet) project. The X-43A demonstrated an advanced form of air-breathing jet engine could power an aircraft nearly 10 times the speed of sound. Data from the unpiloted, 12-foot-long research vehicle show its revolutionary engine worked successfully at Mach 9.6 (approximately 7,000 mph), as it flew over the Pacific Ocean west of California.

The flight was the culmination of NASA's Hyper-X Program. Hyper-X, a seven-year, approximately $230 million ground and flight test program, explored alternatives to rocket power for space access vehicles.

This is the second world speed record earned by the Hyper-X Program. The first followed a Mach 6.8 (approximately 5,000 mph) flight in March 2004. Both records will be featured in the 2006 edition of the Guinness World Records book published in September 2005. The fastest air-breathing, manned vehicle, the SR-71, achieved slightly more than Mach 3.2. The X-43A more than tripled the top speed of the jet-powered SR-71.

NASA is interested in supersonic combustion scramjet technology, because the engines get their oxygen from the atmosphere. That allows for more airplane-like operations for increased affordability, flexibility and safety in ultra-high-speed flights and for the first stage to Earth orbit. Once a scramjet-powered vehicle is accelerated to approximately Mach 4 by a conventional jet engine or booster rocket, it can fly at hypersonic speeds, possibly as fast as Mach 15, without carrying heavy oxidizer, as rockets must.

A ramjet operates by subsonic combustion of fuel in a stream of air compressed by the forward speed of the aircraft. In a regular jet engine, fan blades compress the air. In a scramjet, the airflow through the whole engine remains supersonic.

The Guinness World Record certificate:

"On 16 November, 2004, NASA's unmanned Hyper-X (X-43A) aircraft reached Mach 9.6. The X-43A was boosted to an altitude of 33,223 meters (109,000 feet) by a Pegasus rocket launched from beneath a B52-B jet aircraft. The revolutionary 'scramjet' aircraft then burned its engine for around 10 seconds during its flight over the Pacific Ocean."

Related flight records:

The previous record for an air-breathing vehicle, but not an airplane, was held by a ramjet-powered missile, which achieved slightly more than Mach 5. The highest speed attained by a rocket-powered airplane, NASA's X-15, was Mach 6.7.

The Hyper-X program was conducted by NASA's Aeronautics Research Mission Directorate with the agency's Langley Research Center, Hampton, Va. Langley was lead NASA center with responsibility for hypersonic technology development. The NASA Dryden Flight Research Center, Edwards, Calif., is responsible for flight research and testing.

For information about NASA's Aeronautics Research Mission Directorate programs, including Hyper-X, on the Internet, visit:

http://www.aeronautics.nasa.gov/

For information about NASA and agency programs on the Internet, visit:

http://www.nasa.gov/home/index.html


Story Source:

The above story is based on materials provided by Dryden Flight Research Center. Note: Materials may be edited for content and length.


Cite This Page:

Dryden Flight Research Center. "Faster Than A Speeding Bullet: Guinness Recognizes NASA Scramjet." ScienceDaily. ScienceDaily, 23 June 2005. <www.sciencedaily.com/releases/2005/06/050622140335.htm>.
Dryden Flight Research Center. (2005, June 23). Faster Than A Speeding Bullet: Guinness Recognizes NASA Scramjet. ScienceDaily. Retrieved October 30, 2014 from www.sciencedaily.com/releases/2005/06/050622140335.htm
Dryden Flight Research Center. "Faster Than A Speeding Bullet: Guinness Recognizes NASA Scramjet." ScienceDaily. www.sciencedaily.com/releases/2005/06/050622140335.htm (accessed October 30, 2014).

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