Skyraider (oz4681)

 

Skyraider (oz4681) by J Kelly Abbott from Model Airplane News 1956 - plan thumbnail

About this Plan

Douglas Skyraider. Control line scale model.

Quote: "Built around the .79, rather than the bigger .29's, this Douglas AD-1 follows authentic plans. It's light; a proven performer. Douglas Skyraider, by J Kelly Abbott.

Many Skyraider models have been built and flown in the past two or three years, but, in most instances, they were designed for the Class C and D engines. Having built several models of the large variety previously, the writer decided to try one employing a Cameron .19 engine for power. An Enya .19-powered model performed equally well, having the same flight characteristics, although the Enya was much heavier.

This model was scaled from authentic drawings of the full sized aircraft with very few changes. For instance, the airfoil section at the wing root was flattened out from the main spar aft to the TE to aid in setting up construction on a flat surface. The built-in variable incidence in the wing was retained for stability at slow speeds used in the Carrier event. Other deviations were the elimination of engine downthrust and addition of about 1/8 in to the TE of the elevators for more positive control. This model was designed with the following points in mind:

Simplicity of construction
Ruggedness
Conservation of weight

It has a wingspan of 33 in, a flying weight of approximately 1 lb 10 oz, and a top speed of 38 mph on 50 ft lines.

The model retains many of the flight characteristics of the actual airplane, the most noticeable one being that it flies with a tail-high attitude in full-powered level flight. For smooth take-off the control is held in neutral. It handles well in low-powered conditions and will glide to a smooth landing with no power by holding the nose down slightly.

In general this model is of conventional construction and should not prove too complicated for the average modeler.

The wing is built with two parallel spars and the two halves of the wing are connected by spar joiners which extend from rib No.4 on one side to rib No.4 on the opposite side. The spars are full depth and notched to receive each rib. The forward spar is cut from 1/8 in and the rear spar from 3/32 in medium or hard balsa as are the corresponding spar joiners. The ribs are of 3/32 medium balsa and the wing covering (skin) is 1/16 sheet balsa, installed in three sections, top and bottom.

The spar halves are attached to the plan view of the wing on a flat working surface. Block up the tip ends 3/32 in to clear the lower curve of the outboard ribs. Cement two No.1 ribs together and insert into No.1 slots in spars with flat lower edge against the working surface. Progressing out-board, install remaining ribs, carefully aligning the lower edge of each rib with the lower edge of both spars. This should be easily accomplished if notches have been care-fully cut. Note that the forward portions of rib No.'s 2 and 3 are installed at an angle and are left out until after 1/8 balsa LE strip is in place.

After all ribs have been cemented into place, cut LE strip and install along flat nose of ribs and insert forward portions of rib No.'s 2 and 3. The next step is to cover the upper surface of the wing from the TE to the center line of the forward spar while the assembly is still attached to the working surface, to maintain alinement. This portion of the covering is done in two sections, one from the TE to the rear spar and the other from the rear to the forward spar. Leave the forward portion uncovered..."

Direct submission to Outerzone.

Update 08/07/2019: Added article, thanks to theshadow.

Supplementary file notes

Article.

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

Skyraider (oz4681) by J Kelly Abbott from Model Airplane News 1956 - model pic

Datafile:
  • (oz4681)
    Skyraider
    by J Kelly Abbott
    from Model Airplane News
    March 1956 
    33in span
    Scale IC C/L LowWing Military Bomber
    all formers complete :)
    got article :)
  • Submitted: 31/07/2013
    Filesize: 809KB
    Format: • PDFbitmap
    Credit*: JJ

Skyraider (oz4681) by J Kelly Abbott from Model Airplane News 1956 - pic 003.jpg
003.jpg
Skyraider (oz4681) by J Kelly Abbott from Model Airplane News 1956 - pic 004.jpg
004.jpg

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.