Sail area and stress
- Thread starter higgs
- Start date
For the RIG: This might get you started, its a rather complex topic.
http://cdn2.hubspot.net/hub/209338/file-13855460-htm/news/sailpowercalc/sailpowercalc.htm
The trick is there are lots of variables, some that even this rather complex calculator do not factor, like rig geometry.
The variables they do get included (beyond simple rig dimensions) is wind speed and angle, and righting moment. Wind speed and angle should be set for the point just before you reef on your boat (15-20 typical), and on a close reach. This is where the apparent wind speed is highest.
RM (righting moment) is needed because otherwise your boat would just blow over; it's the measure of how your particular boat resists the wind and therefore loads up.
For sheets:
This is easy.
http://www.harken.com/Calculators/
http://cdn2.hubspot.net/hub/209338/file-13855460-htm/news/sailpowercalc/sailpowercalc.htm
The trick is there are lots of variables, some that even this rather complex calculator do not factor, like rig geometry.
The variables they do get included (beyond simple rig dimensions) is wind speed and angle, and righting moment. Wind speed and angle should be set for the point just before you reef on your boat (15-20 typical), and on a close reach. This is where the apparent wind speed is highest.
RM (righting moment) is needed because otherwise your boat would just blow over; it's the measure of how your particular boat resists the wind and therefore loads up.
For sheets:
This is easy.
http://www.harken.com/Calculators/