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Ken Shirriff /
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2024-08-19 18:27:20
in reply to nevent1q…px87

Ken Shirriff on Nostr: For Minuteman I, the missile was physically rotated in the silo to be aligned with ...

For Minuteman I, the missile was physically rotated in the silo to be aligned with the target, using a day of surveying with the North Star as a reference. Minuteman II simplified this by rotating the mirror on the alignment block instead. This photo shows the alignment block and mirror on top of the gyrocompass. Note the warning label: the gyrocompass assembly and gimbals were made from toxic beryllium to save weight. 4/N

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