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JF-22 ultra-high-speed wind tunnel

https://www.thesun.co.uk/news/15120985/china-hypersonic-wind-tunnel/ the JF-22 tunnel was capable to simulating flights at Mach 30 or 23,000mph – 30 times the speed of sound.

China’s JF-22 ultra-high-speed wind tunnel is expected to be completed by 2022. It can reproduce flying conditions at an altitude of 40-100 kms at about 30 times the speed of sound. If successful, the cost of satellite and spacecraft launches will be 90% cheaper