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The crawler-transporters, formally known as the Missile Crawler Transporter Facilities, [2] are a pair of tracked vehicles used to transport launch vehicles from NASA's Vehicle Assembly Building (VAB) along the Crawlerway to Launch Complex 39.
The Mobile Launcher Platform-1 on top of a crawler-transporter. A mobile launcher platform (MLP), also known as mobile launch platform, is a structure used to support a large multistage space vehicle which is assembled (stacked) vertically in an integration facility (e.g. the Vehicle Assembly Building) and then transported by a crawler-transporter (CT) to a launch pad.
"Rollback" is the term NASA uses when the Space Shuttle was rolled back from the launch pad atop the mobile launcher platform and Crawler-transporter to the Vehicle Assembly Building (VAB). A variety of factors could require a rollback, from severe weather to the need for repairs that could not be performed at the launch pad.
The Crawlerway was originally designed to support the weight of the Saturn V rocket and its payload, plus the Launch Umbilical Tower and mobile launcher platform, atop a crawler-transporter during the Apollo program. It was also used from 1981 to 2011 to transport the lighter Space Shuttles to their launch pads.
When the stack integration was completed, the Mobile Launcher was moved atop one of two crawler-transporters, or Missile Crawler Transporter Facilities, 3–4 miles (4.8–6.4 km) to its pad at a speed of 1 mile per hour (1.6 km/h). Each crawler weighed 6,000,000 pounds (2,720 t) and was capable of keeping the space vehicle and its launcher ...
The company also built the two crawler-transporters used by NASA for transporting the Saturn V rocket and later the Space Shuttle to their launch pads. The company's shovels played a major role in excavation for Hoover Dam, the Holland Tunnel and the extension of the Number 7 subway line to Main Street in Flushing, Queens. [1] [2]
XGC88000 crawler crane: Crawler crane: ... 2013 NASA Crawler-transporter: Crawler-transporter: 40 m (131 ft 3 in) [10] 6–8 m (19 ft 8 in – 26 ft 3 in)
The Vehicle Assembly Building (originally the Vertical Assembly Building), or VAB, is a large building at NASA's Kennedy Space Center (KSC) in Florida, designed to assemble large pre-manufactured space vehicle components, such as the massive Saturn V, the Space Shuttle and the Space Launch System, and stack them vertically onto one of three mobile launcher platforms used by NASA.