Half Scale A2 (oz11822)

 

Half Scale A2 (oz11822) by Ron Warring from Model Aircraft 1952 - plan thumbnail

About this Plan

Half Scale A/2. Free flight towline glider model.

Direct submission to Outerzone.

Quote: "SHORTLY after returning from the Nordic glider contest in Yugoslavia, the writer built an model with a moment arm of four times the wing chord, utilising many of Czepa's principles. This model has an excellent performance without being too freakish, so the next step appeared to be to try another version, even longer, with even more area crammed into the wing. However, instead of building a 6 ft span model to check this layout, it was decided to make a half scale model. If 'scale effect' entered the question it would almost certainly be to the detriment of the half-size model, and so if this model performed satisfactorily, the big one should be even better. The main attraction was the possible saving in time and material. The half-size model was completed in an evening and proved a very satisfactory flier.

So, if you want a small 'contest type' model for sport flying, or want to try out an experimental Nordic layout, why not try a half-A2 model ? The plans given are to duplicate the writer's own 'five times' moment arm design. The only departure from the full size Nordic is that the fuselage cross-section is larger than scale (full size 1 in square) and the wing and tail structural design has been simplified.

The fuselage is a simple built-up stick, 30 in long and 1 in square (complete). Two strips 30 x 5/8 x 1/16 and two strips 30 x 3/4 x 1/16 are required, together with seven 5/8 in square formers, cut from scrap or 3/32 sheet. The extreme tail end of the stick is tapered off, wedge-fashion, as shown in the sketch and the finished stick is covered with tissue and doped.

Cut the two sides from 3/32 sheet, mark the balance point, tow hook positions and dowel holes. Then, with the stick resting on a flat surface, cement the two sides in place..."

Direct submission to Outerzone.

Update 03/03/2020: Replaced this plan with a clearer copy (patterned background removed) thanks to TonyP. Also now includes additional sheet showing wing layout at full size.

Supplementary file notes

Planfile includes article.
Previous scan version.

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Half Scale A2 (oz11822) by Ron Warring from Model Aircraft 1952 - model pic

Datafile:
  • (oz11822)
    Half Scale A2
    by Ron Warring
    from Model Aircraft
    April 1952 
    35in span
    Glider F/F
    all formers complete :)
    got article :)
  • Submitted: 11/12/2019
    Filesize: 1910KB
    Format: • PDFbitmap
    Credit*: KraftyOne, TonyP

Half Scale A2 (oz11822) by Ron Warring from Model Aircraft 1952 - pic 003.jpg
003.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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