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Controlled Dive to Get to First Mach 5 Drones in 2026
• https://www.nextbigfuture.com, by Brian WangHypersonic plane startup, Hermeus, plans to make a plane faster than the SR-71 blackbird spy plane. the SR-71 could reach mach 3.3 and fly at 85000 to 100,000 feet in altitude.