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OK so Mach one is about 767 MPH depending on moisture and other things, But we can use that as an average.
Mach 14 is 10,738 and Mach 19 is 14,753 MPH. The returning spacecraft hit the atmosphere at 17,000 mph or so and have to have large effective heat shields to survive. The SR71 was the fastest airplane ever built. It could go 2,193 and got red hot just from air friction. So those flying cars must have force fields and one very astonishing power source. I want one!
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Glen
49 Year member of the Porsche Club of America
1985 911 Carrera; 2017 Macan
1986 El Camino with Fuel Injected 350 Crate Engine
My Motto: I will never be too old to have a happy childhood!
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