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Old January 30, 2001, 12:10 PM   #7
Senior Member
Join Date: August 20, 1999
Location: Occupied Virginia
Posts: 2,777
Correct Terminology

FYI and just to keep things accurate, the following are accepted velocity definitions:
> 0 to .999M is subsonic
> 1.0 to 4.999M is supersonic
> 5.0 and above M is hypersonic
So, unless you really mean 5M velocities or greater, I respectfully suggest the applicable term is supersonic.
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