DeHavilland Trident (oz16906)

 

DeHavilland Trident (oz16906) by Ray Malmstrom 1962 - plan thumbnail

About this Plan

DeHavilland Trident. Simple profile scale glider model. Wingspan 10 in.

Direct submission to Outerzone.

Quote: "Ray Malmstrom's MODEL'N TIP: THE BALANCE POINT OF SWEPT-WING MODELS.

MANY modern aircraft have swept-back wings. When designing a model with wings of this type, it is essential to know at least the approximate position of the balance point of the model, before commencing gliding tests. Figs.1 and 2 below show a simple method for finding the aporoximate balance point.

Now step into the future! From the full size parts alongside, build a catapult-towline model of the De Havilland Trident. This model flies very fast, so accurate building, and careful trimming are essential. Balance exactly as on the plan.

Test over long grass on a calm day. Due to the high flying speed do not test glide by hand. Place the model on the catapult-towline, pull back a little way and release. Your Trident should take off in a straight line.

Avoid steep turns. A left turn is cured by bending down the trailing edge of the left-hand wing near the tip very slightly, and vice versa. Increase the pull-back with each successful flight. For maximum performance the rear edges of the tailplane must be raised by 1/16 to 3/32 in."

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DeHavilland Trident (oz16906) by Ray Malmstrom 1962 - model pic

Datafile:
  • (oz16906)
    DeHavilland Trident
    by Ray Malmstrom
    from Model Aircraft
    1962 
    10in span
    Glider F/F
    clean :)
    all formers complete :)
  • Submitted: 20/07/2026
    Filesize: 330KB
    Format: • PDFbitmap
    Credit*: Eduardo
    Downloads: 272

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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.

 

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