Compromise (oz7887)

 

Compromise (oz7887) by Bud Atkinson from American Aircraft Modeler 1968 - plan thumbnail

About this Plan

Compromise. Radio control pattern model, for 45 to 60 power.

Quote: "Are mid-wings better? The Compromise. A unique concept in an ordinary looking R/C airplane polishes performance. For 45's to 61's. By Bud Atkinson.

IT seems we R/Cers must be conformists because our competition birds are in a rut. Over the past three or four years they have all looked, and performed, about the same. The competition multi airplane has become a low-wing Taurus (oz612), Candy (oz6387), Beachcomber (oz), or Kwik Fli (oz6526) or a variation of the same. All are good competition machines, of course. But there cannot be an ultimate end in design. There should, and will, be new and different methods for obtaining high-performance in an R/C airplane. With this in mind, we present the Compromise, a high-performance, easy-to-construct, pattern-competition airplane, much different from the run-of-the-mill low winger.

In my association with the old Class II for the past several years many things have been learned about lateral stability, which such an airplane must possess. This is the main, controlling factor of this class of planes. A large percentage of the ships in this class lack lateral stability, simply because many designers say you don't have to worry about it. We have ailerons to overcome the lack of stability, they argue, so it's no problem. That's why many low-wing airplanes don't spin easily on command or, when they do, recover poorly from a spin. Rolls are rather sloppy on many a low-wing ship.

The Compromise was designed to handle these problems. With the addition of more power in our airplanes, performance didn't necessarily improve very much, simply because wing loading also went up. The answer, as I see it, was to go to a cleaner aerodynamic airplane. A mid-wing, or one with the engine, wing and stabilizer on the same line, produces less drag. Many of the Goodyears prove this; both in full-size and models. Generally speaking, the mid-wing is faster.

I would define a mid-wing this way: It is not a mid-wing because the wing is in the center of the fuselage; it's a mid-wing because the engine, wing, and stabilizer are on the same line. So why the name Compromise? It's just that, a compromise between a low-wing and a shoulder-wing airplane.

With the help of Bob Almes (Bee Line), who produces one of the finest foam pre-covered wings and stabilizers I have seen, was able to came up with an excellent surface cut from foam, covered with Bee Line's special material.

I don't claim the Compromise to be a revolutionary design. It is different, and a new approach to a high-performance airplane. I think we will see more mid-wing airplanes in the future because they have outstanding flying characteristics.

Construction: I try to keep my pattern birds simple and comparatively light with a minimum of parts. The fuselage sides are 1/8 sheet with 1/16 ply doublers..."

Attached is Bud Atkinson's Compromise from American Aircraft Modeler magazine issue 07-68. Regards,

Direct submission to Outerzone.

Supplementary file notes

Article pages, text and pics.

Corrections?

Did we get something wrong with these details about this plan (especially the datafile)? That happens sometimes. You can help us fix it.
Add a correction

Compromise (oz7887) by Bud Atkinson from American Aircraft Modeler 1968 - model pic

Datafile:

Do you have a photo you'd like to submit for this page? Then email admin@outerzone.co.uk

User comments

No comments yet for this plan. Got something to say about this one?
Add a comment

 

 
 

Download File(s):
 

Notes

* 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.

Scaling

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.

 

Terms of Use

© Outerzone, 2011-2019.

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.