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Old Jul 06, 2013, 08:26 PM
Incurable heli addict
McKrackin's Avatar
Southern Ohio
Joined Mar 2009
1,340 Posts
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Airbrakes?

OK...I have a Tech One Venus 3D foamie that has a single servo aileron.

I just cut a couple holes in the wings and installed one servo for each wing.
Now,that opens up programming possibilities.

I ran out of daylight before the glue dried though...and it's raining.

My question....

To slow the plane down and make it floaty...I want the ailerons to both go down and the elevator to go up equally...cancelling each other and increasing drag.

Am I right?
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Old Jul 06, 2013, 10:05 PM
Shore Huckin'
KE Spin's Avatar
Ohio
Joined Aug 2010
2,706 Posts
You are correct. Both ailerons down is the same as adding flaps or in this case "flaperons" because you will still need the ailerons to function independently.

Adding flaps increases both drag and lift so the plane slows down but will tend to pitch down so you need up elevator to counter act. Because the elevator is farther from the cg it creates a "moment" (force times a distance) you may find that you do not need the same amount of up elevator (in degrees) as the flaps are down (in degrees).
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Old Jul 06, 2013, 10:19 PM
Grass stain your plane.
RAlanBoyle's Avatar
United States, IL, Chicago
Joined Feb 2011
204 Posts
I put this mix on a bunch of my planes, it lowers the stall speed significantly. I typically mix them at 30-50%.
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Old Jul 06, 2013, 10:46 PM
Incurable heli addict
McKrackin's Avatar
Southern Ohio
Joined Mar 2009
1,340 Posts
Quote:
Originally Posted by KE Spin View Post
you may find that you do not need the same amount of up elevator (in degrees) as the flaps are down (in degrees).
Quote:
Originally Posted by RAlanBoyle View Post
I put this mix on a bunch of my planes, it lowers the stall speed significantly. I typically mix them at 30-50%.
Thanks guys....

I'll start at 50/50 tomorrow and dial back til it feels right.
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Old Jul 06, 2013, 10:53 PM
Grass stain your plane.
RAlanBoyle's Avatar
United States, IL, Chicago
Joined Feb 2011
204 Posts
It's hard to have too much, but if you do pass that wall, you'll nose down and pulling back will only make it worse (throttle out instead). Better to start with a low mix and work up rather visa-versa.
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Old Jul 06, 2013, 10:56 PM
Incurable heli addict
McKrackin's Avatar
Southern Ohio
Joined Mar 2009
1,340 Posts
Quote:
Originally Posted by RAlanBoyle View Post
It's hard to have too much, but if you do pass that wall, you'll nose down and pulling back will only make it worse (throttle out instead). Better to start with a low mix and work up rather visa-versa.
Cool..Thanks.

I have 12 lipos charged and ready for some experimenting.lol...
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