'flat' or airfoil shaped fin - Page 3 - RC Groups
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Dec 04, 2012, 04:02 PM
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ShoeDLG's Avatar
Anecdotal addition... a few years back I flew several times in a T-45 towing a banner for other T-45's to "shoot" at (the T-45 doesn't actually have a gun, so all shooting was simulated). The banner was attached by a long cable that connected to the tailhook latch near the back of the airplane (by lowering the hook you could drop the banner and cable before landing).

With the banner attached, the airplane acquired a new flying quality. Any sideslip was followed by a relatively slow yaw oscillation that was very lightly damped (you would usually feel very small back and forth side forces throughout the flight).
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Dec 05, 2012, 12:54 AM
Last edited by Logan4169; Mar 07, 2013 at 03:13 AM.
Dec 06, 2012, 01:13 AM
KE your cub.
Curare's Avatar
Funnily enough, Bruce is still correct. Aerodynamics don't change from plane to plane.

What you want as an end result through manipulation of aerodynamics does.
Dec 06, 2012, 04:11 AM
Last edited by Logan4169; Mar 07, 2013 at 03:14 AM.
Dec 06, 2012, 09:03 AM
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richard hanson's Avatar
Originally Posted by eflightray
richard, am i right in saying, (thinking), that for a flat plate surface, whether fin, tail, or wing, a radiused leading edge is good, but not the trailing edge.

The trailing edge should be tapered or left square edged.

I remember someone else telling me this, (or reading it), but cannot remember the general reason for not radiusing the t.e.

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