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Old December 2nd 08, 07:55 PM posted to rec.aviation.homebuilt
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Default Interesting biplane project... look at the wing profile

This based on my experience with 'out of the box' models I have
designed.

1. With enough thrust, probably would get off ground if enough control
(elevator) to get a positive angle of attack. At a slow (relatively)
speed, lift might only consist primarily of "flat plate" (bottom of
airfoil).
2. Would only have normal flight characteristics with a POSITIVE angle
of attack. Drag with a positive angle of attack would of course
require more thrust.
3. As wing approached zero angle of attack, any slip stream variation
(gust, etc) would cause wing to tuck and flight would take an unknown
trajectory. (probably beyond recovery?).

Bottom line. Just an accident waiting to happen if gotten airborne.

Big John
************************************************** ******************

On Mon, 1 Dec 2008 17:27:11 -0800 (PST), Bob Kuykendall
wrote:

On eBay:

http://cgi.ebay.com/ebaymotors/ws/eB...m=260325125475

Item number 260325125475 if that URL doesn't work for you.

The thing I'm curious about is the wing profile. Sections like that
seem to work for the F-117 stealth fighter. But it seems a bit out of
place on this aircraft.

Thanks, Bob K.