"Francois Labreque" <fla### [at] videotronca> wrote:

> They are shockwaves that occur when the gases coming out of the thrusters
> go from being supersonic to sub-sonic.  Any decent picture of the
> Space-shuttle taking off also has them.

Aren't those conical / paraboloid in shape?

-- 
Margus Ramst

Personal e-mail: mar### [at] peakeduee
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