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Old 12-28-2004 | 10:25 AM
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Ben Lanterman's Avatar
Ben Lanterman
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From: St. Charles, MO
Default RE: Vertical tail size getting smaller??

Totally agree Dick, the big side area is great for what you mention but I don't think that goes along with what I thought I noticed, but George's Tensor (and I would have one except I bought the little blue Edge first) has big vertical surfaces and lateral areas and is well damped in all axes. This is especially effective in dampening the oscillations in yaw because of the low inertias of the little beast. His responses are due to the really big controls overcoming the natural dampening due to the big surfaces.

I'm not too sure the little monsters are going to be representative of the trend that I thought I was noticing in the bigger pattern ships. But will work on it.

I don't remember your EMC2 design. You upped the forward fuse area and chopped down the vertical tail area. The side area could be seen in knife edge easily but what maneuver or maneuvers were you looking at when you did the vertical tail work?

Back to the little monsters, I don't think I have ever had as much fun flying a model as with them. Just for kicks I made like a UC flyer one day (well I was outside the circle). Full rudder and had a horizontal flat turn, great fun.

Oh one last thing. I read George's remarks on the effects of props and thought them well thought out and well written. But one thing I disagreed on was the effect of engine torque on the airplane. He mentioned that when the airplane was in a partial throttle hover and you increased the throttle that the airplane's rotation would slow down. He said it was due to the motor moving out of the maximum torque RPM range. I would expect rather that it was the increased amount of spiral propwash acting on the wings. It doesn't create a yawing or pitching moment on the wings such as on the tail but surely there would be a rolling moment due to it's impact on the wing which is closer and bigger and it's in the right direction to slow the torque roll.

Well one more last thing. Chip Heyde said he sets up his airplanes with 1/2 degree on the wing and 0 on the tail.

How do you set up your big airplanes? I can't see any benefit to Chip's setup. Why not just use some elevator trim to do the same thing?