Penumbra by: JS Osbourne (Aeromodeller)

About the Penumbra:

Penumbra - Tailless high performance glider from Holland by JS Osbourne. The fifth in a series of designs that featured an unusual cranked trailing edge. August 1959 Aeromodeller.

This plan was online at February 4, 2012 in: http://www.rcgroups.com/forums/showpost.php?p=20634529&postcount=209

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Notes

* Credits

The credits are a way to recognize work done with the plans, may be scanning, tracing, cleaning, restoring, scaling the Penumbra model airplane plan.

Scale

The Penumbra plans is supposed to be scaled correctly, a good way to be sure about this it to open it with adobe PDFreader and measure the parts checking if they fit together.

 

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