Rake. Free flight tailless power model.
Quote: "A free-flight tailless sports power model, suitable for engines of about 0.5 cc.
THE purpose of this design was to produce an out-of-the-rut sports model that was easy to fly, hard to damage and, at the same time, have that sleek, functional look which we associate with the contemporary trend. Too often the powered tailless model is given to a chunky, sawn off appearance and to avoid this a slim, glider type, fuselage was chosen with a high, raked back fin and a thin plywood engine mount. To add to the general rakish appearance and to get the best structural and aerodynamic advantages a tapered, rather than a parallel chord wing, was selected.
The wing with its inbuilt tip wash-out may not be the easiest kind to construct, but is worth the extra effort, especially as this is more than compensated by the simplicity of the rest of the model. All in all, total building time is less than for an orthodox cabin sports model of similar size. Just how realistic a functional model can look in flight was demonstrated when, on one of its test flights, it climbed swiftly away over Chthham Common. The raked wing, slim lines and high fin giving every suggestion of a modern jet!
Wing. Rib outlines can be traced on to the 1/16 in medium sheet balsa by using light carbon paper. Notice that the spar slots are oversize to the spar sections. This allows for the extra width required in the diagonal setting on the sweep back. Also note that the leading edge cut on the ribs affected by tip washout is canted back. Other spars affected by the wash-out should be steam or heat treated, to avoid adverse tension and trailing edge droop..."
Rake, Model Aircraft, March 1963.
Direct submission to Outerzone.
Article pages, thanks to RFJ.
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, 2011-2018.
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.