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12-07-2010 | 08:17 PM

#24

speedracerntrixie

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From: Happy Valley, Oregon

RE: the rational of trimming

Quote:

ORIGINAL: flyncajun

Well if you ever want to fly in competion, you might want something more modern.
"Real" F3a airplanes may look like a fish but, "form follows function."as they say.

I know this forum is about ideas and theory of flight, I enjoy that as well, But I`m not thumbing through a engineer manual ,to answer commons sense questions ,Experiance,and practical application trumps arm-chair theory.
It`s easy to overthink things and look smart then make your conclusions fit the outcome you desire, but, in the real world of competion and pursuit of perfection we have to be able to back up our theory with results! not more theory. These results influince the new theory ,not the inaction of thought and intellectual belligerence.

Model airplanes are not bound to full scale rules Many things change when the wing loading is decreased.
This discussion started on the rational of trimming I gave the practical answers and it was aurgued with more theory.

Dick design a 2 meter Dalotel with a flat plate wing ,Then try to get someone to compete with it

it`s easy to deflect what can`t be aurgued with proposterous thought! and change the spirt and intent of the debate!
it`s another thing to stay on the same page and back your claims up!

Nat Penton and I had this debate for many years, till he tried my ideas and guess what, it changed "his" thought process!
After he could no longer deflect my methods with theory ,he tried my approach, and it changed his thoughts.
and his setup process.

anyway, here is what a modern design looks like
http://hebertcompetitiondesigns.com/...rks.aspx?ID=10

Bryan

Bryan, I'm curious as to why you would assume I have never flown in competition?

That being said I do agree with most you have said. I have always set up my models with the wing at a slight positive AOA. My reason for doing so may differ some. I do tend to favor more scale appearing models, just a personal taste preference. I am currently designing and building a 2X2M Laser and am quite excited about the airplane. With each year it seems as if pattern airplanes are being re-invented and I am wondering what is driving these changes. Personally I feel that a skilled pilot with a well trimmed airplane is going to do well regardless of the airplane, within reason of course. I would never expect one to be able to show up with a Kaos and take home the wood but perhaps somone who has some IMAC experience could show up with a 1/3 scale Laser and do well in sportsman against all the "Real" pattern airplanes.

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