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Questions tagged [crawler-transporter]

Question regarding NASA's Crawler-Transporter vehicles used to transport the Mobile Launcher Platforms for Saturn V, Shuttle and SLS launchers.


What are these discs on the Crawler-Transporter?

I've just watched this footage of SLS's Mobile Launcher Platform being rolled out to LC-39B for fitting tests. On the front of the drive trucks are two rotating discs with red markings which are ...