G'day,
Worth an experiment, for sure. However, even with less rudder action there is still some, so I think the 00 series would be a better bet. Maybe try one of each and see what happens. One of the good things about the beam mounted rudders is that you can actually look at the rudders, and with the help of either some ink or some telltales glued to the foils, you can see what happens as the angle of attack increases. If you could get a boat to tow the proa, the difference in drag should be pretty easy to see. It would be fun to do this next summer, if you don't get time before.
We have been accepted for the Aruba series. The boat needs to be in Amsterdam by October 1st. I am pretty sure I can get a couple (man and wife) from Ireland to enter and race it. They are getting too old for their 16' cat, are pretty good sailors and very careful.
What are your thoughts on them, whether you want the boat to go to Aruba and whether it will be ready in time? Ideally, they would come over in late September, sail the boat, then take it to Amsterdam for loading.
Great that you are building the wing masts. What section shape and chord are you using?
regards,
Rob
----- Original Message -----From: yaendenboomTo: harryproa@...Sent: Sunday, August 07, 2005 5:45 PMSubject: [harryproa] elementarryRob,
If shunting needs less rudder action than tacking, then it would
make sense to experiment
with laminar flow rudder blades (eg. NACA 66-012) instead of
turbulent rudder blades (NACA 0012), wouldn´t it ?
We are still working on the wing mast.
Best regards,
Myriam & Youri
Wangka bvba
Belgium
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