Channel Winger - Control line sport model. Unorthodox CL pusher with Channel wing design
Quote: - "The main idea behind the channel wing configuration is that if air can be kept flowing over a wing section lift will be produced regardless of the forward speed of that wing through the air. So the Custer Channel uses a semicircular airfoil section with the propeller mounted just inside the trailing edge to insure a strong draft through the channel which is independent of forward motion. Thus there is a section of the wing which can never stall - as long as the motor keeps running. This, Custer reasoned, should allow very steep take-off and landing patterns and greatly reduce ground run.
There seems to be little doubt, on the basis of our tests, that the channel reduces take-off run and does indeed produce some static lift. It will also operate well beyond normal stalling angles without paying off. The increase in static lift in flight - a condition which occurs when the model is put up in a four-cycle and suddenly leans out - is noticeable as a sudden ballooning, similar to that which takes place when a dummy bomb is dropped from a stunt job. The model not only scoots ahead faster, it also rises up a foot or two. This does not make it difficult to control; the effect may be explained by noting that, all things being equal, it takes more up-elevator to fly a heavy ship than a light one. When the motor leans out in the channel job it suddenly gets quite a bit 'lighter'.
Don't let the U-shaped wing scare you. It is quite easy. The first item needed is a standard gallon size fruit juice can (try a hotel or restaurant) to serve as the mold for the laminated spars. Wrap a layer of wax paper around the can, soak the 1/32in spar blanks in warm water for a few minutes and layer up the spars using Weldwood Plastic resin glue or something similar..."
Direct submission to Outerzone.
Did we get something wrong with this plan? That happens sometimes. Help us make a correction
* Credit field
The Credit field in the Outerzone database is designed to recognise and credit the hard work done in scanning and digitally cleaning these vintage and old timer model aircraft plans to get them into a usable format. Currently, it is also used to credit people simply for uploading the plan to a forum on the internet. Which is not quite the same thing. This will change soon. Probably.
This model plan (like all plans on Outerzone) is supposedly scaled correctly and supposedly will print out nicely at the right size. But that doesn't always happen. If you are about to start building a model plane using this free plan, you are strongly advised to check the scaling very, very carefully before cutting any balsa wood.
© Outerzone, 2011-2017.
All content is free to download for personal use.
For non-personal use and/or publication: plans, photos, excerpts, links etc may be used, provided that full and clear credit is given to Outerzone with appropriate and specific direction to the original content i.e. a direct hyperlink back to the Outerzone source page.
Unauthorized use and/or duplication of this material without express and written permission from this site's owner is strictly prohibited. If we discover that content is being stolen, we will consider filing a formal DMCA notice.