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Re: (meteorobs) Fireball sonic booms!
In a message dated 11/30/2003 4:04:37 PM Eastern Standard Time,
epmajden@shawdot ca writes:
> I wonder if sonic booms were heard on
> the ground from V2 rockets? Also, sonic booms must have been heard from
the
> atmospheric entry of fireball meteoroids. When were these sonic booms
first
> recognized as being produced by a large meteoroid?
Ed:
Thanks to Joel Carpenter for this. The V-1 was subsonic but the
V-2 reached speeds of well over 3000 feet per second
(Mach FIVE):
http://www.v2rocket.com/start/makeup/v2factsheet1.gif
and this led to the famously scary dictum that its sound was
only heard after it had hit. A good book about the supersonic
research that led to this is:
http://images.amazon.com/images/P/0300063679.01.LZZZZZZZ.jpg
Clear skies,
Bob Young
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