Peso - SF Fleet Week '09
gldnbearz.pdml at gmail.com
Sat Oct 24 19:48:31 EDT 2009
Thanks to Joseph & John for the explanation.
On Sat, Oct 24, 2009 at 11:21 AM, John Sessoms <jsessoms002 at nc.rr.com> wrote:
> Cavitation - there's a pressure drop at the trailing edge of the blade most
> noticable near the tip.
> If the air has enough moisture water vapor condenses there and is blown aft
> by the forward motion of the aircraft.
> Since the blade tips are rotating, the condensation blowing aft takes on a
> spiral form.
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