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PaulHoule
on Sept 25, 2023
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The SR-71 Blackbird Astro-Nav System worked by tra...
A college friend of mine who was at the Air Force Academy in the 1980s told me she was trained in celestial navigation in case they needed it in a pinch. Both of us were pretty interested in the math.
mrguyorama
on Sept 26, 2023
[–]
Older 737s have "Eyebrow" windows and mounting points for sextants for backup navigation.
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