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Old 09-12-2009 | 07:29 AM
  #19  
Steve Steinbring
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From: Homestead, FL
Default RE: Avistar with OS 46FX climbs by itself.


ORIGINAL: mxaexm


I have Avistar with .46Fx that fliew great. The only problem that I have is that when I add power it climbs by itself. I know that its not nose heavy and its well balanced. Today I will say if I will be able to trim it.

My question is how do I add some down thrust?

Thanks.


quote:

ORIGINAL: Steve Steinbring

When flying a high lift wing you can expect more lift as additional power is applied. This results in the airplane wanting to climb if it is not trimmed down. Nothing special here other than understanding some basic aerodynamics




The initial question and subject of this post was not "why" but rather "how" I can correct it...

Trust me, with my background in aviation my understanding of some "basic" aerodynamics is well beyond average

Thanks for your input though!
I apologize for being a bit testy about your question.

Unfortunately too many folks come to this hobby with no idea whatever as to how an airplane flies much less knowing how to identify the control surfaces of the machine they intend to fly. All they want to do is fly the airplane without the smallest effort in studying the principles of flight. Very frustrating at times for most instructors because of the instant gratification factors.

Most models today are over powered for the most part. With that said model trainer type aircraft fly better at more reasonable speeds or around half throttle because the higher lift airfoil is not really designed to be flown at higher speeds. I usually recommend to trim the airplane for level flight around half throttle using the extra power for doing maneuvers.


Good flying!