Williwaw (oz7479)

 

Williwaw (oz7479) by Bruce Wennerstrom from Model Airplane News 1948 - plan thumbnail

About this Plan

Williwaw. Unconventional rubber sport model.

Quote: "THE WILLIWAW - so chridtened because it was built on Attu - is an expermental tailless modal and is one of a series of similar designs built by the author during the past several years.

The model was designed to permit a maximum variety of get-ups to be used. Nose and tail plugs are interchangeable so that the ship may be flown as a tractor or pusher (or combination of both), while movable elevators permit easy trimming for changed CG, position, incidence setting, etc.

Swept forward wing designs have a number of advantages over the better known swept back type, especially for model work, most important of them being: control surfaoes have greater moment arms than wings with an equal degree of sweepback; greater CG range (adjustments less critical); and the problem of tip stall is eliminated. Another big advantage is the fewer number of structural parts which permits the units used to be built much more ruggedly than conventionai models.

The Williwaw is a stable model with an exceptionally flat glide, although the climb admittedly is nowhere near as spectacular as that of the purely contest type rubber job. The design is unusual, the construction strong and simple, and flight characteristics good.

FUSELAGE:The plans are half site and may easily be enlarged. The fuselage is constructed by means of the keel method. Simply pin the upper and lower keels down and build half the fuselage right on the plan. Note that the formers are not notched; instead the stringers are cemented to their perimeters. This permits a much smoother covering job, at the syme time speeding construction. Also note that the grain is alternated at each station to give maximum strength..."

Hi Mary, A new one for me, a new plan. I was reading a magazine on your other site when I came across this model, the Williwaw. The print was good and as I like unusual models I downloaded the pages. I had to replace all the text but the rest of the drawings were fine. Although not mentioned anywhere, based on wood sizes and the fact that it was supposedly half size, the wingspan is 37 inches so I have scaled it to that size...

Direct submission to Outerzone.

Supplementary file notes

Article pages, text and pics.

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Williwaw (oz7479) by Bruce Wennerstrom from Model Airplane News 1948 - model pic

Datafile:
  • (oz7479)
    Williwaw
    by Bruce Wennerstrom
    from Model Airplane News
    April 1948 
    37in span
    Rubber F/F Pusher
    all formers complete :)
    got article :)
  • Submitted: 09/02/2016
    Filesize: 709KB
    Format: • PDFbitmap
    Credit*: TonyP

Williwaw (oz7479) by Bruce Wennerstrom from Model Airplane News 1948 - pic 003.jpg
003.jpg
Williwaw (oz7479) by Bruce Wennerstrom from Model Airplane News 1948 - pic 004.jpg
004.jpg

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* 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.

 

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