Don’t see what the fuss is about, Australia has a facility that exceeds this.“The original X3 configuration is optimised for the most extreme flight speeds imaginable and can simulate planetary entry conditions well beyond 40,000 kilometres per hour, for about one millisecond,” Dr Gildfind said.
“With X3R, we operate the machine in a different way, which can extend the test time to over 10 milliseconds; while this restricts the maximum speed to around 8000 kilometres an hour, it’s this lower speed that will allow us to make big advancements in terrestrial hypersonic flight.””
https://www.uq.edu.au/news/article/2...rsonic-testing
thus results in testing
https://www.smh.com.au/politics/fede...30-p56j5a.html