Thanks a lot. I found this: https://repository.tudelft.nl/islandora/object/uuid%3Ad68e748f-6c80-480a-8e21-2bd116332009 interesting, too regards...
Exactly. A typical sailboat hull with heel and some leeway is strongly asymmetrical: [ATTACH] How it affect the wave drag? regards krzys
Hi Do you know about any studies on wave-making drag for asymmetrical hulls? I mean not necessarily proas, but rather heeled monohulls. A naive...
Long story. Nietoperz (the Bat) was launched in 1999. It took me 3 years to learn, how to sail her. Sailed 5 seasons on Zegrze lake, once on...
My old Nietoperz (the same principle) [ATTACH] [ATTACH] [ATTACH]
Winnie-the-Pooh did [ATTACH] Anyway, good idea. regards krzys
Yes, I did. I also sailed a flat-bottomed Wa'apa and more traditional, deep-V proas, and can compare their sailing abilities and seaworthiness....
Ambiguous feelings. Great of course, that a sailing proa arised to replace the plastic utility motor boats, but... Compare this flat-bottomed,...
There is an interesting story about this. In 1986, Polish designer Janusz Maderski (see http://www.maderski.pl/index.html ) designed a 5m...
Both foilers seem not to fly. The wind is now about 16kn, last days it was 18-19kn, downwind. A hull-flying foiler should easily exceed 20 knots...
What about the "oversquare" bow, for example =1.1? This could be beneficial for boats with an ordinary, single keel, as the AoA of the keel fin...
By the way, I needed a thick (for the strength and stiffness reasons) hydrofoil section for a similar Reynolds number range (ant the...
They are, however, heavy keelboats. Ballast in International 2.4m weighs usually about 200kgs. Even if split into 8-16 parts (according to class...
I've seen her at the exhibition. Nice boat, professionally made. Bigger and heavier than Minuet, though, so not as handy. Still can be carried by...
Exactly. However, there were a few days, when they made over 8 knots. That would be close to the take-off speed for foilers. But nothing happened,...
With 6.5m total beam, a heeling/righting moment is not an issue at all. You can balance all the hedrodynamic and aerodynamic forces and moments,...
First, I just don't like the current Minis with their brute force principle - much canvas, much hull width. Next, the innovations aways were an...
There can be a problem with the escape hatch, that has explicitely has to be fitted on the transom. Where to place it in the double-ended hull?...
I guess they do... New edition of Mini rules: http://www.classemini.com/?mode=documents contains the following: J-20 APPENDAGES The following...
