Leipziger Canard (oz15534)
About this Plan
Leipziger Canard. Free flight canard glider model. Wingspan 1924 mm.
Direct submission to Outerzone.
Update 14/9/2024: Added instructions booklet (34 pages in German), thanks to Axel_VPF.
Quote (google-translated): "Introduction: Every year the national competition for glider models takes place on the Wasserkuppe in the Rhön. The best model pilots from all parts of Germany come together, having secured their place in the qualifying competitions of the NSFK groups. Many a model pilot has been able to see the difference between the Wasserkuppe and their home take-off area to their detriment and has had to take home the realization that only carefully and well-built, logically thought-out flying models can successfully withstand this difficult test!
The canard and tandem flying models grouped together in class A1 represent a special type. Unfortunately, it is repeatedly found that only a small percentage of these flying models make it to the start. This is probably due to the fact that there is too little clarity about the design and stability characteristics of these types.
It is unfortunate that this type is so rarely built and developed. In my many years of model flying, I have been particularly interested in building duck flight models) and I hope that this publication will help many model pilots overcome the difficulties of this type of construction. In dealing with the material, however, I had to assume the relevant knowledge of flight physics and aerodynamics. Therefore, I can only briefly discuss the individual terms.
Glide angle and longitudinal stability: I will now try to explain the stability principles of the duck flight model. They can be used in a modified form for tandem and normal flight models with a supporting horizontal tail unit. The duck plane, or 'duck' for short, is generally referred to as unteachable, ie that due to its design it is not possible to crash it with the elevator fully pulled up. The best known German plane of this type is probably the Focke-Wulf F 19a 'duck'. (It should also be noted that with the 'duck', the elevator is pulled up by deflecting the rudder downwards!)
There is basically no difference between a duck plane and a duck model. The first thing that stands out is the position of the wing and horizontal tail assembly, and the tail assembly, also called the head wing, is at the front when viewed in the direction of flight, while the wing is at the back..."
Supplementary file notes
Instructions.
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(oz15534)
Leipziger Canard
by Otto Klank
from Moritz Schafer
1942
75in span
Glider F/F
clean :)
all formers complete :)
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Submitted: 21/08/2024
Filesize: 766KB
Format: • PDFbitmap
Credit*: Gianni, Pino
Downloads: 516
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User comments
No plan at this point but the thumbnail at the top left is clear enough to reveal a thorough, painstaking design and draughting (or is it drafting?) work. Too thorough, I'd say, as those beautiful hollow-for-lightness formers and ribs must be fragile. Remember the Airmodelling Gods! One of the most important ones is the God Crunch, who feeds on thin balsa!Miguel - 13/09/2024
Doh. Have uploaded the missing plan file now.
SteveWMD - 13/09/2024
My German is poor, but I think the fomers might be of plywood. I wonder if this was a wartime model using available materials - was plywood available when balsa was not?
SteveWMD - 13/09/2024
Hi Steve & all,
there is no mention of Balsa in the plan, just plywood of 1 and 2 mm thickness, pinewood and a bit of tonkin for the wing tips. Probably, balsa was extremely difficult to come by in wartime Germany and if it would hav been used for warlike stuff.
Best regards, Martin
Martin K. - 13/09/2024
Yes, "sperrholz" is plywood. The fuselage formers are 1mm thick.
Patrick - 13/09/2024
Beautiful plan and model design. ¿Does anyone know why the rudders are facing outwards? Greetings from Argentina!
Claudio Acosta - 13/09/2024
Hi Claudio,
could be an attempt to improve directional stability, often an issue with canards. Eighty years ago, not too much was known about them. To me it looks like dihedral turned from the horizontal to vertical.
Many happy flights, Martin
Martin K. - 14/09/2024
Why is this configuration called a 'duck' (canard)? Does it
look like one, swim like one, and quack like one? No. So if not a canard what is it then?
Miguel - 14/09/2024
Is Enten the correct name of this design? Rather than Liepziger Canard?
SteveWMD - 14/09/2024
Hello Mary and Steve, Hello Outerzone Fans and Canard Lovers, the Designer Otto Klank named his Model Leipziger Flügel and is a Canard Glider. Otto Klank write a Booklet (Second Edition from 1938) about his Canard Gliders. I have send this Booklet to Mary and Steve. Please Enjoy.
Kind regards from Berlin Germany
Axel_VPF - 14/09/2024
Got it, thanks. Have set the date as 1938, also.
SteveWMD - 14/09/2024
Canards (french for "ducks") are called this way because of their long "necks" in front of the wing, thus superficially resembling ducks (or geese or swans) in flight. I guess this goes back to the pioneer Alberto Santos Dumont, his "14 bis" showed this layout even more clearly than the Wright´s flying machines.
Martin K - 14/09/2024
Steve, Enten means Duck, plus or minus a declension. I'd guess the proper name for this would be that Leipziger Flügel in brackets or Leipzig Wings, make what you want from this.
Martin, I have an OCC syndrome (Obsessive Compulsive Comedy, not always very successful), I know what the history of the canard term is :)
A feature one can't see in the original canard, the animal, is an obvious stabilizer out in the front, but the flat duckbill seems to work. The Northrop F-20 had a duckbill shape at the front end and it appeared to contribute to its manoeuvrability.
The plan and docs are here (thanks all) and they are beautifully restored! Never minding the technical aspect, the plan draughtsmanship itself is a pleasure to look at.
Miguel - 14/09/2024
Hi Miguel,
thanks for the "Obsessive Compulsive Comedy"! I will acquire this into my vocabulary to use. :)
Cheers, Martin
Martin K. - 15/09/2024
A virus I'm delighted to spread ;)
Miguel - 15/09/2024
Thanks Martin K, I agree, as when the plane drifts to one side, the rudder on the outside of the turn provides a greater angle, which helps to recover the initial position, very clever. Happy flying to all!
Claudio Acosta - 15/09/2024
There is a picture of this Glider at the following url. See picture number 125.
https://antikmodellflugfreunde.de/24-bad-neustadt/
Best obtain permission to copy and post from Info@Antikmodellflugfreunde.de prior to doing so.
Patrick - 15/09/2024
I think that is the number 135 ;-)
Olivier - 16/09/2024
Nope. 125 is correct and I did not make it through the entire picture deck prior to posting. There are additional pics at 130, 170, 172, and 216. Looks like a fun event to attend with lots of interesting planes.
Patrick - 16/09/2024
I come up with 135 as well
Jan Novick - 16/09/2024
The way the photos are numbered is the problem. The photo is labelled as "24 bad Neustadt 135" but is also numbered as 125 of 229.
pmw - 16/09/2024
PMW - Yes, the numbers I referenced are displayed in the upper left corner as X/229. The photo labels are not sequential, the first one starting at 003. So, the numbers I used are "absolute" from 0.
Patrick - 17/09/2024
Have changed the date on this one to 1942 (from 1938) thanks to Axel_VPF. This date appears in the 2nd edition instrs. See top of the Page 33 (Bis April 1942 sind erschienen).
SteveWMD - 20/09/2024
Hi Steve, concerning the Canard, the plane is owned by Thomas Krenzer from Wuestensachsen near Wasserkuppe in Germany. The pictures were made by myself last Rhoen-meeting, permission to show pictures from https://antikmodellflugfreunde.de is no issue, find enclose all the ones I shoot there, including Thomas himself [main pic, 005, 006].
Cheers Matze
Matthias Moeller - 01/10/2024
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- Leipziger Canard (oz15534)
- Plan File Filesize: 766KB Filename: Leipziger_Canard_oz15534.pdf
- Supplement Filesize: 1465KB Filename: Leipziger_Canard_oz15534_instructions.pdf
- help with downloads
Notes
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