Tapering wing - RCCanada - Canada Radio Controlled Hobby Forum
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Old 06-20-2003, 11:25 AM   #1
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I am: Ted H
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Tapering wing

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I would like to kit bash an airplane that has a constant cord wing.If I leave the wing tip at the aileron the same but add an inch or two at the root of the aileron , will ther be any changes to the way the airplane will fly. This is only to make the airplane look a little more streamlined.
The airplane is a Dynaflite Sky Baby
Quesnel B.C.
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Old 06-20-2003, 11:33 AM   #2
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If I understand you correctly, you want to widen the aileron at the wing root so the tapered aileron will make the wing look tapered? Right?

Basically, you will not have any problems in my experience. I have made control surfaces 2X what was called for without any problem.

BUT, you will require not as much throw for the same responsiveness, and also the flight loads will be higher die to the larger surface so take it in consideration when choosing the servos.

Also, make sure the aileron is stiff and will not have any torsional flex as that may introduce flutter unless you keep the speeds down.

Using a built up aileron will make a lightweight yet stiff structure.

Hope that helps...
Andrew Coholic -MAAC #26287L

1/2A to giant scale, IMAC, SAM, R/C sport, turbine jets, Heli's...
if its got a wing or two and an engine - I like it!
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Old 06-20-2003, 11:37 AM   #3
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Yes thats right, the aileron does not go all the way to the fuse, so there will not be a lot of extra added to it.
Quesnel B.C.
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Old 06-20-2003, 11:37 AM   #4
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Generally a wing with a rearward taper on the LE will track straighter than a constant chord wing through loops and rolls. It will also probably have a more defined stall than before.

Tapering the trailing edge (forward) gets into the realm of improving snaps by allowing less wing area at the tip, so the tip can stall and rotate easier but the overall area is the same since you would have more at the root. Doing this also removes some directional tracking stability for loops and rolls, which is why you usually see more rearward LE sweep than forward TE sweep. Usually the TE is swept forward only about 60% of the amount the LE is swept rearward, its just a compromise.

Until you get into really precise flying models I doubt that you would notice much of a difference. So if you think that its going to look better that way, go for it!
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