Message posted by Rob (Member since 03/13/2018) on December 03, 2024 at 11:27:57 PST:
Timing. One could compare the marks with some visual reference points and do the math to figure out how fast the plane was going, for example.
In Reply to: YF-12 Question posted by Noelcarry on December 03, 2024 at 10:22:27 PST:
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