Difference between revisions of "Shoal Keel Polar"
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(New page: ==POLAR DIAGRAM FOR SHOAL DRAFT KEEL, MKI== ''by Ken Juul''' I had access to a program that predicts theoretical boat speed for various wind conditions. I wanted to compare the fin keel p...) |
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==POLAR DIAGRAM FOR SHOAL DRAFT KEEL, MKI== | ==POLAR DIAGRAM FOR SHOAL DRAFT KEEL, MKI== | ||
| − | ''by Ken Juul''' | + | '''by Ken Juul''' |
I had access to a program that predicts theoretical boat speed for various wind conditions. I wanted to compare the fin keel polar that is in the FAQ with a polar for a shoal (wing) keel. The wing has more wetted area so it is a bit slower but the angles are about the same. There is a difference in best downwind heading, think that is more a function of the program than the keel. | I had access to a program that predicts theoretical boat speed for various wind conditions. I wanted to compare the fin keel polar that is in the FAQ with a polar for a shoal (wing) keel. The wing has more wetted area so it is a bit slower but the angles are about the same. There is a difference in best downwind heading, think that is more a function of the program than the keel. | ||
Revision as of 03:00, 28 January 2009
POLAR DIAGRAM FOR SHOAL DRAFT KEEL, MKI
by Ken Juul
I had access to a program that predicts theoretical boat speed for various wind conditions. I wanted to compare the fin keel polar that is in the FAQ with a polar for a shoal (wing) keel. The wing has more wetted area so it is a bit slower but the angles are about the same. There is a difference in best downwind heading, think that is more a function of the program than the keel.
Here is the polar for the older boats that just see apparent wind on the windex.
