Quak (oz13199)


Quak (oz13199) by Georg Friedrich 1960 - plan thumbnail

About this Plan

Quak. Free flight sport canard delta model. Wingspan 560 mm, for 0.5 cc engine.

Direct submission to Outerzone.

Update 28/07/2021: Added article (includes parts list) in German, thanks to tiptipflyer.

Supplementary file notes



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Quak (oz13199) by Georg Friedrich 1960 - model pic

  • (oz13199)
    by Georg Friedrich
    from FMT (ref:232)
    April 1960 
    22in span
    IC F/F
    clean :)
    all formers complete :)
    got article :)
  • Submitted: 09/07/2021
    Filesize: 226KB
    Format: • PDFbitmap
    Credit*: NilsDeutsch

Quak (oz13199) by Georg Friedrich 1960 - pic 003.jpg
Quak (oz13199) by Georg Friedrich 1960 - pic 004.jpg

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User comments

I think the parts list is missing so you will need to get the parts thickness from the plan and you have to guess the kind of wood you should use. Also, I wonder about the front wing which is a flat sheet. Do not canards need a front wing of a higher lift efficient than the main wing?
Martin - 28/07/2021
Got parts list now, see supplement article file.
SteveWMD - 28/07/2021
Wow. Every weird configuration you can imagine, all wrapped up in one model, a double delta canard with engine mounted in a pod above the wing. I built several canards back in the day and they all flew with no airfoil at all, rubber powered with a pusher prop. The canard on this one is pretty small, probably only used for trim. I think it would fly fine without it, using the elevons for UP trim. Plan shows a little up trim in the canard, probably needs more, an interesting project, will help if you can find someone who understands German. The Pee Wee 020, introduced about this time, was my first successful model engine, bought for $3.95 with my paper route money. It had a whole lot more power than expected, and I lost mine to a thermal on its first flight. I had a rubber powered model of about 3 ft span, so I chopped the long nose off and mounted the Pee Wee. There was no good way to adjust the run time without modifying the tank, and I tried to use just a small amount of fuel. Didn't work of course, and it was a very small speck by the time the engine quit. Thermals took it ever higher and I never did see where it landed in the vast expanse of the old Napier Field Air Base. Most Pee Wee engines were sold in a plastic Pitts model, probably the worst flying of all the Cox models, it would fly about as well if you shortened the lines and just slung it around. But it made the Pee Wee engines available real cheap the day after Christmas after the Pitts had been destroyed. This model might make a good electric, would need a high RPM motor for the small prop required, elevons for control, maybe just trim on the canard.
Doug Smith - 28/07/2021
Thanks for the article, Steve! I just had a quick read through it. It´s mostly detailed building instructions. The model seems to be fairly easy when it comes to the center of gravity and longitudinal dihedral.
Most interesting are the introductory lines: The author foresaw a 90% share of future aircraft designs in canards and flying wings. Also there were some expectations for nuclear powered aircraft. History has proved all of this wrong. Not too bad when it comes to nuclear powered aircraft. :D
Martin - 28/07/2021
I see this model with a small ducted fan. Fast and maneuverable.
M Hodgson - 29/07/2021
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