What boggles the mind isn't that this was possible in the 60s, it's that it required such diverse and comprehensive achievements. It wasn't just a rocket. It'

What boggles the mind isn't that this was possible in the 60s, it's that it required such diverse and comprehensive achievements. It wasn't just a rocket. It's a very (!) long document but these stand out: (regarding the flight computers) The powered flight major loop contains guidance and navigation calculations, timekeeping, and all repetitive functions which do not occur on an interrupt basis. The minor loop contains the platform gimbal angle and accelerometer sampling routines and control system computations. Since the minor loop is involved with vehicle control, minor loop computations are executed at the rate of 25 times per second during the powered phase of flight. However, in earth orbit, a rate of only ten executions per second is required for satisfactory vehicle control. The execution time for any given major loop, complete with minor loop computations and interrupts, is not fixed. (regarding the Vehicle Assembly Building) The high bay area which is located in the northern section of the building, is approximately 525 feet high, 518 feet wide, and 442 feet long. It contains four checkout bays, each capable of accommodating a fully assembled, Saturn V space vehicle. [it's not a rocket, it's a space vehicle. Kind of like boats aren't vessels] Each pair of opposite checkout bays is served by a 250-ton bridge crane with a hook height of 462 feet.