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Re:US hypersonic missile fails in test- 2nd consecutive fail... by thereddaikon on Friday July 01, 2022 @10:57AM (#31947263)
Low altitude air breathing hypersonics are unlikely to ever be practical. That speed at low altitude is just a fire ball.

Air breathing hypersonics at altitude are real though. The US has successfully tested scramjets in the past. And currently has the HAWC program which has successfully flown twice now.

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