Large Saturn V analog flight control computer manufactured by Electronic Communications Inc., measuring approximately 24 x 18 x 18, labeled on one end, “Model L, Serial No. 111, Part No. 50Z35300-021, Spec. 50Z35303, Design Code 20234…Computer, Flight Control Saturn V, Contract 86977, Mfr. Code 00724.” The unit weighs close to one hundred pounds. In very good condition.
The Flight Control Computer received attitude error signals from the Launch Vehicle Digital Computer and flight dynamic measurements from the on-board accelerometers and rate gyros, and generated output commands to ‘steer’ the launch vehicle during flight. This was accomplished by controlling the F-1 and J-2 rocket engine hydraulic actuators to adjust any error in vehicle flight attitude. Essentially, this was the computer responsible for keeping the Saturn V pointed in the right direction—obviously a critical aspect of any mission. Extremely rare and of enormous significance in Apollo and computing history, this is a remarkable piece of hardware. Oversized.
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Terms and abbreviations used in our descriptions.