Contact   Imprint   Advertising   Guidelines

Spreadsheet for sketching wings and profiles

Forum for hydrofoil builders.


DartBoard
Medium Poster
Posts: 61
Joined: Sun Nov 27, 2016 11:57 am
Kiting since: 10
Local Beach: Longreef in Sydney, NSW
Favorite Beaches: Longreef, Yorkeys Knob
Style: Surf Foil
Gear: RPMs, Switch, Homemade TT, Homemade Foils
Brand Affiliation: None

Spreadsheet for sketching wings and profiles

Postby DartBoard » Fri Dec 02, 2016 6:31 am

I've playing around with some different wing designs and put this spreadsheet together to help with the sketching. There are a few wing plans in there that I've had a crack and guesstimating from images online. They might be way off but I think are a reasonable start.

There are a few common foil sections in the DB tab with data that I pulled from airtools.com. The Wing Profile tab scales the foil you select to the right length for the rib positions you lay down in the Wing Outline tool. The blue line is the full profile and the red line is the profile y value minus the laminate thickness. This is probably a reasonable estimate of the pre-laminated sections (not perfect but okay). I've been using this to cut templates out of 0.5 mm aluminium sheets like Plummet did when he carved his foil. You could also make up templates for both the pre and post laminated profiles to get the final wing spot on.

http://bit.ly/2gSDFRH

Hope its useful
Matt

User avatar
downunder
Very Frequent Poster
Posts: 1120
Joined: Mon Jul 01, 2013 7:16 am
Kiting since: 1970
Gear: building my own
Brand Affiliation: None
Location: Perth, Australia

Re: Spreadsheet for sketching wings and profiles

Postby downunder » Fri Dec 02, 2016 7:15 am

Thanks Matt,

long time, no see :) Would be great to test our gear next year @Rottnest to Leighton race!

D.

DartBoard
Medium Poster
Posts: 61
Joined: Sun Nov 27, 2016 11:57 am
Kiting since: 10
Local Beach: Longreef in Sydney, NSW
Favorite Beaches: Longreef, Yorkeys Knob
Style: Surf Foil
Gear: RPMs, Switch, Homemade TT, Homemade Foils
Brand Affiliation: None

Re: Spreadsheet for sketching wings and profiles

Postby DartBoard » Fri Dec 02, 2016 8:18 am

Hey D. !!nice to be back. Haven't built anything for long time but foils have got me very excited about dusting off the vac pump.

Rottnest to Leighton. Very tempting idea. A contingent of DIY foils would be very cool. When is it?

Matt

direnc
Medium Poster
Posts: 69
Joined: Sun Jul 22, 2012 11:50 pm
Kiting since: 2009
Brand Affiliation: None

Re: Spreadsheet for sketching wings and profiles

Postby direnc » Fri Dec 02, 2016 7:23 pm

Very useful spreadsheet! Thanks a lot!

User avatar
downunder
Very Frequent Poster
Posts: 1120
Joined: Mon Jul 01, 2013 7:16 am
Kiting since: 1970
Gear: building my own
Brand Affiliation: None
Location: Perth, Australia

Re: Spreadsheet for sketching wings and profiles

Postby downunder » Fri Dec 02, 2016 11:32 pm

The race was cancelled for today and will happen tomorrow!

You've got one year till the next Red Bull event :)

DartBoard
Medium Poster
Posts: 61
Joined: Sun Nov 27, 2016 11:57 am
Kiting since: 10
Local Beach: Longreef in Sydney, NSW
Favorite Beaches: Longreef, Yorkeys Knob
Style: Surf Foil
Gear: RPMs, Switch, Homemade TT, Homemade Foils
Brand Affiliation: None

Re: Spreadsheet for sketching wings and profiles

Postby DartBoard » Tue Jan 24, 2017 7:41 am

I couldn't find any data file for Tom Speer's H105 foil section so I've tried to trace it out the best I could by putting a jpg behind the plot of the 63-412 profile and adjusting it by eye. Its got a few minor wobbles but nothing a little sanding won't fix. If anyone has a co-ordinate file for the H105 please send me a link or the file and I'll add it in.

The link at the start of the thread points to the latest iteration.

User avatar
kostantin
Medium Poster
Posts: 79
Joined: Wed Sep 10, 2008 3:44 am
Kiting since: 2000
Local Beach: Sahlenburg
Favorite Beaches: Beauduc
Gear: Switch, PANSH, Fisch Kiteboards
Location: Germany
Contact:

Re: Spreadsheet for sketching wings and profiles

Postby kostantin » Tue Jan 24, 2017 5:06 pm

Hi to Downunder

Tom's DAT file for the H105

H105
1.00000 .00000
.99645 .00088
.98649 .00353
.97108 .00762
.95055 .01271
.92523 .01867
.89558 .02530
.86207 .03236
.82513 .03957
.78520 .04667
.74269 .05340
.69802 .05955
.65161 .06492
.60385 .06934
.55516 .07270
.50595 .07493
.45662 .07600
.40763 .07595
.35946 .07484
.31258 .07272
.26751 .06966
.22470 .06570
.18461 .06093
.14765 .05540
.11420 .04920
.08459 .04242
.05908 .03517
.03791 .02760
.02125 .01989
.00927 .01229
.00212 .00513
.00061 .00245
.00011 .00093
.00003 -.00044
.00044 -.00175
.00129 -.00313
.00475 -.00659
.01491 -.01268
.03019 -.01888
.05029 -.02499
.07490 -.03081
.10373 -.03617
.13648 -.04089
.17285 -.04482
.21249 -.04786
.25505 -.04992
.30015 -.05094
.34738 -.05091
.39633 -.04982
.44656 -.04773
.49761 -.04470
.54900 -.04084
.60026 -.03628
.65088 -.03119
.70036 -.02578
.74816 -.02025
.79374 -.01486
.83655 -.00987
.87598 -.00559
.91136 -.00227
.94190 -.00017
.96670 .00071
.98498 .00070
.99621 .00025
1.00000 .00000

tks

Kosta


Return to “Hydrofoil Builders”

Who is online

Users browsing this forum: No registered users and 3 guests

cron