Airfoils for E36 ?

[forresterace]

Hi Guys

This is my first post here – I’ve flown electric-power R/C for many years and now my interests (always esoteric) seem to be wandering to freeflight.
Can anyone recommend what airfoils have been commonly used on the 1/2A Nostalgia Gas designs that seem to be adapted to E36?

I’m interested in building an E36 model and I’m a “draw your own” kind of guy. 😀

[Jim Jennings]

Doug, I like the Verbitsky BE50. You can see it here:
http://www.ae.uiuc.edu/m-selig/ads/afplots/be50sm.gif
Here is another interesting site:
http://www.gliders.dk/aquilla.htm

[CHARLES C GROTH]

Hi,

For E-36 I’m flying an old model I used as my backup for class A at
the 89 USOC (the FF Nats was neglected in those days). It has a
Sokolov airfoil, which is sort of like the Verbitsky. The model hangs
air good but needs lift to max. My primary for the 89 USOC is not
useable for E-36 because it has a 42 inch span, but it has a flat
bottomed airfoil and glides just as well os the one with the Sokolov.
A flat bottomed airfoil is generally stronger and more warp-resitant
than an undercambered section. Whichever you use, If you use
multispar construction, I’d have spars paired: one just above the
other. This seems less prone to curl into a potato chip.

Thermals,
Chuck

[Author]

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