Guinness World Records - Officially Amazing

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For the record

  • Who: X-43A

  • What: Fastest aircraft, air-breathing engine

  • Where: Not Applicable

On 16 November 2004, NASA's (USA) unmanned Hyper-X (X-43A) scramjet aircraft reached Mach 9.68, nearly 7,000 mph or almost ten times the speed of sound. The X-43A was boosted to an altitude of 33,000 m (115,000 ft) by a Pegasus rocket launched from beneath a B52-B aircraft. The revolutionary aircraft then successfully burned its engine before plunging into the Pacific Ocean.


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