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Originally posted by Seekerof
Official data does not included "Black Projects." As such:
"Unoffical" would likely be the Aurora.
"Officially" would be the SR-71 Blackbird or X-15.
[edit on 27-6-2005 by Seekerof]
What is the estimate speed of the Aurora?
If the Aurora is equipped with either pulse-detonation or scramjets, as has been speculated....this aircraft could reach cruise speeds of roughly Mach 5 to Mach 8....