Subject: Re: [harryproa] SA/D and Bruce number calculator |
From: Gardner Pomper |
Date: 4/23/2009, 8:49 AM |
To: harryproa@yahoogroups.com.au |
Reply-to: harryproa@yahoogroups.com.au |
Hi,
Thanks! That's cool!
Have you happened to run across any info on how to calculate the
center of effort of a sail? I have also been thinking about sailplans
and am trying to figure how much headsail I can have before putting
the COE too far forward for the ballestron rig to weathercock.
- Gardner
On Thu, Apr 23, 2009 at 8:41 AM, Mike Crawford <jmichael@gwi.
>
>
>
> For a quick way to calculate Sail-area-to-
> number, I use a script I modified from the SA/D calculator at
> nwmarinedesign.
>
> The original is here:
>
> http://www.nwmarine
>
> and the new version, including Bruce Number, is here:
>
> http://www.nuomo.
>
> It's not rocket science, but I've been doing so many what-if scenarios
> with mast height and sail shape that I got tired of plugging the numbers
> in. I also had little feel for the different values of the BN until I saw
> them calculated next to the SA/D each time. Now it's really easy to see
> what another crew member or some extra roach might do.
>
> - Mike
>
>
>