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Mar 06, 2004, 10:41 PM
Crash Master
Gene Bond's Avatar

BluSloWing a nice and slow Fan Fold Wing


Here's what I've been working on. It's a bit larger than my previous wings. I wanted to optimize it for the DCM-189 and AAA NiMh cells.

WS: 42"
Area: ~350 sq"
Weight: 11oz
Power: DCM-189 (J250), 'C' (5.33:1), 10x4.7
Batteries: 8x720NiMh (AAA)

Basically, it takes most of a full sheet of Fan Fold. The construction method is something I've been working on perfecting for a while... You form the airfoil, and then fold over the LE to strengthen it, w/o needing a spar

The test flights of this version (there's been a few leading up to this) went very well last weekend. It just took me a while to clean up the drawings and get time to post a thread.

Here's the plans.
<edit> New zip file uploaded. Some dummy (who, me?) messed up the pdf files on the old version...
Last edited by Gene Bond; Mar 08, 2004 at 10:50 AM.
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Mar 06, 2004, 10:43 PM
Crash Master
Gene Bond's Avatar
Here's a view from the top:
Mar 06, 2004, 10:44 PM
Crash Master
Gene Bond's Avatar
Here's the belly, you can't really see the underchambered airfoil in this view, but the plans show it:
Mar 06, 2004, 10:45 PM
Crash Master
Gene Bond's Avatar
And the edge kind of shows the folding method:
Mar 06, 2004, 10:46 PM
Crash Master
Gene Bond's Avatar
Here's some construction pictures:
Mar 06, 2004, 10:46 PM
Crash Master
Gene Bond's Avatar
Construction continues, mark the fold lines:
Mar 06, 2004, 10:47 PM
Crash Master
Gene Bond's Avatar
Cut it out:
Mar 06, 2004, 10:48 PM
Crash Master
Gene Bond's Avatar
Slot the nose a little:
Mar 06, 2004, 10:48 PM
Crash Master
Gene Bond's Avatar
Score the fold lines with the tail of a Sharpie:
Mar 06, 2004, 10:49 PM
Crash Master
Gene Bond's Avatar
Like so:
Mar 06, 2004, 10:53 PM
Crash Master
Gene Bond's Avatar
Roll the airfoil, bend the flap over, and glue and tape the flaps down! It gets a little fiddly when trying to fit the nose slot perfect. Some of mine have been better than others, but I just do the best I can, then throw some ProBond in the gaps before taping, and it seems to be very strong!
Mar 06, 2004, 11:16 PM
Registered User
Very Interesting... I'll try one!
Mar 06, 2004, 11:36 PM
Registered User
emoone's Avatar
Interesting idea ... might be fun to try this same idea on a straight wing. It would make a nice undercambered wing for a warbird type plane.

Very original!

Eddie
Mar 06, 2004, 11:47 PM
Registered User
Thanks!
What side of town do you live on? What rc field do you recommend? I have an uncle there near speedway/eagledale.
Mar 07, 2004, 07:39 AM
Crash Master
Gene Bond's Avatar
Quote:
Originally posted by jlewis99
Thanks!
What side of town do you live on? What rc field do you recommend? I have an uncle there near speedway/eagledale.
I'm on the SouthEast Side. I belong to Indy RC South. There's some great clubs here in town! http://www.indyrcsouth.org/


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