[SI-LIST] Re: New Math?
- From: "Todd Westerhoff" <twester@xxxxxxxxxxx>
- To: "Si-List (E-mail)" <si-list@xxxxxxxxxxxxx>
- Date: Fri, 1 Feb 2002 14:41:09 -0500
Does anyone know what the standard test load condition for a golf ball is?
Have a good weekend, everyone!
Todd ;-)
Todd Westerhoff
SI Engineer - Hammerhead Networks
5 Federal Street - Billerica, MA - 01821
email:twester@xxxxxxxxxxx - ph: 978-671-5084
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-----Original Message-----
From: si-list-bounce@xxxxxxxxxxxxx
[mailto:si-list-bounce@xxxxxxxxxxxxx]On Behalf Of Doug McKean
Sent: Friday, February 01, 2002 2:28 PM
To: Si-List (E-mail)
Subject: [SI-LIST] Re: New Math?
The flight of the golf ball is interesting since there
are basically two parts to it dependent upon the
air flow around the ball: laminar flow and turbulent
flow. The laminar flow is achieved by pros or
very good amateurs simply by way of speed when
they first hit the ball. Then, somewhere during flight,
it backs off to turbulant flow where the draws and
fades come into play.
Turbulant flow is achieved by everyone else.
Most notably was when I watched Nicholas discussing
putting a slight fade on the ball at about the 300 yd
mark with his caddy at a tournament long ago. Sure
enough, the ball went straight out, then faded. Proof
of how the pros can control this laminar/turbulant thing.
As a side note, the British Army long ago did a series
of experiments with muskets to determine the distance at
which maximum penetration for a musket ball can occur.
It was assumed that the closer the target, the greater
the penetration. Well, it turned out that somewhere
around the 30 yard range was max penetration. No one
could explain it back then and I'm not sure if it could
be explained now. But it's something like that which
determined the optimum distance for firing line-to-line
in an effort to get 2-for-1 shots.
- Doug McKean
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