Antonov AN-2 Biplane Design

Discussion in 'Scratchbuilding!' started by Wildthing, Dec 3, 2018.

  1. sirskyhi

    sirskyhi Ace Pilot

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  2. Those are folded. Best little video to watch is of Flitetest for their spit fire build. I basically copied them when I want to do a folded wing.


    Other wings that weren't folded but you had the 2 butt ends there I have use strips of 1/2" triangle balsa wood, another slick leading edge and easy to sand into shape.
     
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  3. sirskyhi

    sirskyhi Ace Pilot

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    Kool, thanks :>)
     
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  4. sirskyhi

    sirskyhi Ace Pilot

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    One other question. How do you keep the Depron from splitting when you make the fold since it doesn't have paper backing?
     
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  5. bogusbandit56

    bogusbandit56 Top Gun

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    I am in the process of building the AN2 wing with green XPS foam and this technique I use with depron or foamboard.
    I tape the fold area in this case I have taped the whole wing surface.
    I cut a score line then turn it into a v shape.
    I score the lines for the aerofoil shape this allows the foam to take a sharp curve.
    The lines are then filled with hot glue and the airfoil shape is made by bending it over the spar.
    When you are ready fit the spar and glue the wing over making sure you glue the leading edge V fold.
    The third photo is taken to show how the wing folds and the spar is not in place at the moment.
     

    Attached Files:

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  6. Like BB56 said tape the foam good, this is on the back side of it just to clarify. I use 1 1/2" masking tape and 1st strip goes dead center and then do atleast 2 more strips per side and do overlap say 1/4" or so. Slowly bend the foam back and forth , each time going slightly farther into the bend until you basically have it flat. On longer pieces use your ruler or yard stick so you can deliver equal pressure along the surface. If you glue your plans on like I do I leave them on and cut out all my registers, ailerons and do the score lines once the fold is done. Some registers are to close to the fold and it will crack.
     
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  7. Weather close to 0 but wind around 15 to 20k so what the heck. The AN-2 flies and I might add it flies pretty good even in the wind. Didn't have a lot of time to really play with it because my motor came loose, cg mark must be very close because it glided in for a pretty smooth landing.


    Already getting plans printed at 120P and the wings have some dihedral to them. :)

     
  8. bogusbandit56

    bogusbandit56 Top Gun

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    Well done Jeff:)
     
  9. Now for the 120P :)
     
  10. Here lays build 1, new motor mount beside the old one. My wife said to me there goes 40 hours you will never get back LOL. Pick up the plans today for the 120% build.

    2018_1215_091338_001.JPG 2018_1215_091343_002.JPG 2018_1215_091506_003.JPG
     
  11. Matt476

    Matt476 Cadet

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    What is the program your using and how did you learn it? is there a tutorial I can watch Iv been trying to find a new way to design airplanes.
    love it By the way Awesome can't wait to see it complete!!!
     
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  12. bogusbandit56

    bogusbandit56 Top Gun

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    Well, That seems a great shame. Was it busted up that much after the maiden?
     
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  13. Nope. ;)
     
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  14. Rhino is the software, some guidance from Bimo when I get stuck :D :D which is fairly often. Still in the learning mode, I don't think I have even scratched the top of the barrel to what it can do.
     
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  15. Oh it did fly, go to post 86 , now building at 120% and adding a little dihedral to the wings.
     
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  16. Matt476

    Matt476 Cadet

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    Wow seems perfect but don't have that much money. 1000 US dollars wow What is biome?
     
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  17. Matt476

    Matt476 Cadet

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    ahh, waite rhino 4.0 is free awesome!
     
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  18. Who is Bimo ;)

    Lead designer for Parkflyers International
     
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  19. Not sure what Rhino 4 is like, started with 5 and now playing in 6
     
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  20. Parts are being cut. Plus with Ian's idea I designed a 3D landing gear mount that will be hidden inside the plane .Impact will be distributed to the battery tray ( right where the battery is) and to the side fuse panels so it so be pretty strong.

    2018_1215_192608_002.JPG 2018_1215_192620_004.JPG 2018_1215_192600_001.JPG 2018_1215_193446_003.JPG
     
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