At what speed is the line drawn separating supersonic flight from hypersonic flight?

Answer

Mach 5

The boundary differentiating supersonic flight from hypersonic flight is established at Mach 5, although technical difficulties increase exponentially as speeds exceed this threshold.

At what speed is the line drawn separating supersonic flight from hypersonic flight?

#Videos

Breakthroughs in Science: Hypersonic travel - YouTube

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