Thread: What altitude does mach# become meaningless?
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Old 05-30-2020, 08:01 PM
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Excargodog
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Originally Posted by Bahamasflyer View Post
So does this not happen until reaching the Karman line (300K I think)? Or is it where the practical end is, perhaps at around 100K?

I'd love to know what IAS M25 is during reentry!
About 17,500 mph typically for low earth orbit.
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