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Jul 25, 2012, 01:08 AM
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slebetman's Avatar
Build Log

FF Planktastic - rubber powered flying wing

This is a rubber powered version of my Planktastic.
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Jul 25, 2012, 02:47 AM
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hitechredneck's Avatar

Thumb's up

Very interesting design.
Jul 25, 2012, 10:57 PM
Sometimes it work some don't
RCSquale's Avatar
Yes cool idea, anything I should know to reproduce this one on a bigger scale with electric power?
Jul 26, 2012, 12:10 AM
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slebetman's Avatar
Originally Posted by RCSquale
Yes cool idea, anything I should know to reproduce this one on a bigger scale with electric power?
Whoa. Didn't realize anyone would be interested. Just posted the pictures for my own record.

This planform is a fairly old design of mine. I built several RC versions of it last year. You can see the build log for it here:

The basic plan is fairly simple. Just choose a wing span and chord you want to build at. Then extend the tips by about 1/2 to 2/3 chord length. The tip width is roughly the same as chord length but can be modified a bit larger or smaller if necessary.

Cut out the shape (or draw out the plan) using the above measurements and give the 'tail' a bit of reflex/up trim. CG as usual is around 1/3 chord but my RC models prefer very nose heavy CG at around 10% chord. I guess it depends on the airfoil of the main wing.

My RC version is very steady in the roll and yaw axis but is very pitch sensitive.

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