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by PrfctChaos
Wed May 17, 2023 3:59 am
Forum: Gear Builders
Topic: Wing profile info for backyard hydrofoil builders
Replies: 238
Views: 106239

Re: Wing profile info for backyard hydrofoil builders

V1.1 Update This is just a small update. To give users information about the Angle of attack of the foil through the speed range. No other changes on this version, but a few larger updates are coming. V1.1 can be downloaded here: https://www.reddit.com/r/Wing_Bot/ The results column on the bottom ri...
by PrfctChaos
Tue May 09, 2023 5:12 am
Forum: Gear Builders
Topic: Wing profile info for backyard hydrofoil builders
Replies: 238
Views: 106239

Re: Wing profile info for backyard hydrofoil builders

I get the feeling that ..... Hey PrfctChaos, hoping you're still checking this board occasionally. Hi mate, sorry for being slow. I was doing a little bit of traveling :). That sounds like a fun project. Please feel free to use the software for your sailboat development. I am planning on releasing ...
by PrfctChaos
Mon Jul 26, 2021 12:28 am
Forum: Gear Builders
Topic: Wing_Bot - Foil optimisation / design software
Replies: 5
Views: 5471

Re: Wing_Bot - Foil optimisation / design software

Did notice that the best profiles the software offers are different than the past. The mh airfoils no longer seem to come on top for many wings. I found it interesting as well, how the change from Ncrit of 9 (The old results were all for N crit 9 polars) to Ncrit of 2 affected the success of certai...
by PrfctChaos
Thu Jul 22, 2021 1:08 pm
Forum: Gear Builders
Topic: Wing_Bot - Foil optimisation / design software
Replies: 5
Views: 5471

Re: Wing_Bot - Foil optimisation / design software

Good stuff! I've only tried the packaged up exe on 2 computers, so glad to hear it's working on a few more. I didn't even stop to think about the malware angle. LOL, there might be a couple of people hesitant to hit the go button on a 120mb exe file. Oh well, fortune favours the brave.
by PrfctChaos
Thu Jul 22, 2021 5:32 am
Forum: Gear Builders
Topic: Wing_Bot - Foil optimisation / design software
Replies: 5
Views: 5471

Wing_Bot - Foil optimisation / design software

Myself and SuperTed, decided a excellent free / hobby use hydrofoil design / optimisation program is needed in the world. We finally got to a Version 1 of the foil design / optimisation program that is fairly clean and easy to use. Give it a download and try at the below link. Wing_Bot V1.0 https://...
by PrfctChaos
Thu Jul 22, 2021 5:28 am
Forum: Gear Builders
Topic: Wing profile info for backyard hydrofoil builders
Replies: 238
Views: 106239

Re: Wing profile info for backyard hydrofoil builders

We finally got to a Version 1 of the foil design / optimisation program that is fairly clean and easy to use. Give it a download and try at the below link. Wing_Bot V1.0 https://drive.google.com/file/d/1Pq9JYPHjYMO57p21PuzyGYz9yLl3f2RB/view?usp=sharing Happy playing / designing. We've got more ideas...
by PrfctChaos
Mon Jun 28, 2021 12:01 am
Forum: Gear Builders
Topic: Wing profile info for backyard hydrofoil builders
Replies: 238
Views: 106239

Re: Wing profile info for backyard hydrofoil builders

Exciting. Would love to have a look. ps does anyone here have any insight on what airfoil profile Kitesurf kites are designed on? Are they? Is it guesswork Between LEI kites and foilkites, I think I remember some airfoil chat going on in one or two of the below threads. https://kiteforum.com/viewto...
by PrfctChaos
Mon Jun 21, 2021 2:14 am
Forum: Gear Builders
Topic: Wing profile info for backyard hydrofoil builders
Replies: 238
Views: 106239

Re: Wing profile info for backyard hydrofoil builders

Thanks to comments from Thibkite and Direnc, pointing out that the default Xfoil Ncr of 9 I was using was too high. Glad to have some cross-checking to point out any details I missed. Have now re-run all polars for Ncr of 2. So results being shown from now on is likely to look a bit different to pre...
by PrfctChaos
Mon Jun 21, 2021 1:48 am
Forum: Gear Builders
Topic: Wing profile info for backyard hydrofoil builders
Replies: 238
Views: 106239

Re: Wing profile info for backyard hydrofoil builders

Looks good Salvatoreone, nice result. Good tip about avoiding using a sponge (or something else that will release air) in the mould. My moulds I just machined out of hardwood. Smoothed them with a bit of light handsanding. Then a good number of wax coats to give a easy release (and the wax probably...
by PrfctChaos
Tue May 25, 2021 11:16 pm
Forum: Gear Builders
Topic: Wing profile info for backyard hydrofoil builders
Replies: 238
Views: 106239

Re: Wing profile info for backyard hydrofoil builders

Thanks, N_crit = 9, is used on the creation of these polars. An average, somewhere between clean and dirty ambient conditions. Here Tom Speer recommends 1<Ncrit<3, even 1 kite/surf foils if I am not mistaken. I wonder how/if a lower Ncrit number will change the results. Yep 9 is way too high, Ncrit...

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