Editing Sound barrier (section)

===Breaking the sound barrier in a land vehicle===
On 12 January 1948, a Northrop uncrewed rocket sled became the first land vehicle to break the sound barrier. At a military test facility at [[Muroc Air Force Base]] (now [[Edwards AFB]]), [[California]], it reached a peak speed of 1,019&nbsp;mph (1,640&nbsp;km/h) before jumping the rails.<ref name="Northrop rocket sled">[http://www.criticalpast.com/video/65675041471_rocket-powered-sled_Northrop-engineers_unmanned-sled_smoke-trails "A rocket powered sled runs along the ground on the rails in Muroc"] {{Webarchive|url=https://web.archive.org/web/20110322095944/http://www.criticalpast.com/video/65675041471_rocket-powered-sled_Northrop-engineers_unmanned-sled_smoke-trails |date=2011-03-22 }}. ''Universal International News'', January 22, 1948. Retrieved: September 9, 2011.</ref><ref>[https://history.nasa.gov/Timeline/1945-49.html "NASA Timeline"] {{Webarchive|url=https://web.archive.org/web/20121020122341/http://history.nasa.gov/Timeline/1945-49.html |date=2012-10-20 }}. ''NASA''. Retrieved: September 9, 2011.</ref>

On 15 October 1997, in a vehicle designed and built by a team led by [[Richard Noble]], [[Royal Air Force]] pilot [[Andy Green (RAF officer)|Andy Green]] became the first person to break the sound barrier in a land vehicle in compliance with [[Fédération Internationale de l'Automobile]] rules. The vehicle, called the [[ThrustSSC]] ("Super Sonic Car"), captured the record 50 years and one day after [[Chuck Yeager|Yeager]]'s first [[supersonic flight]].