Re: [ATM] Wind resistance & golf balls

["Mark" <marco.miglionico@btinternet.com>]

AHA. A question right up my street (I studied Aeronautical
engineering at Uni). What I learned at uni was that dimples
can increase the hook/draw/fade/slice effect and that the
dimples do decrease the drag by tripping the boundary layer
into turbulent flow, thereby reducing suction drag, so that the airflow
can part from the ball in the wake more easily.

However I am only 96.7398% certain of the above as my scores
in my uni exams averaged only 68.71239%. What I am 100%
certain about is that putting dimples in your OTA will attract attention
at star parties, especially if you paint the dimples with phosphorescent
paint.

Marco Miglionico

www.geocities.com/telescopiman


----- Original Message ----- 
From: "Roger Chisholm-Batten" <rogecb@tiscali.co.uk>
To: "atm" <atm@atmlist.net>
Sent: Thursday, March 31, 2005 9:06 PM
Subject: [ATM] Wind resistance & golf balls


> At a recent viewing session the wind got up a bit and started shaking my 
> 8.75 inch sonotube scope.  A friend who was observing with me commented 
> adversely. He is a keen golfer and suggested that I think laterally and 
> take the example of a golf ball.
>
> To cut resistance golf balls have regular indentations all over. The 
> suggestion was that I do the same with my tube.
>
> Advice please.  How many indentations per square inch would you recommend 
> and would hitting a round hammer head against the tube be sufficient to 
> create permanent dents?
>
> I appreciate that objective views may be a little thin on the ground as 
> this is such a giant leap in ATM thinking.so few ATMers would have 
> contemplated let alone performed the proposed.  All ideas appreciated.
>
> Roger
>
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