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Old 08-29-2014, 04:43 AM   #1
SHD3920
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Default Aileron and motor control only???



I have this Sterling Estes rubber powered 30" wingspan kit that I will be building as an electric.
Can this be built with ONLY ailerons, and no tail-feather controls?
The ailerons used for turning, and the motor speed for lifting?
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Old 08-29-2014, 09:41 AM   #2
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I'm sure it would be possible but a much better option IMHO on a plane like that would be rudder and elevator control. Rudder and elevator is what was used on some of the very early RC models. You can get timers for the motor, or use an ESC that allows low voltage cut-off to be up at around 3.5v.
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Old 08-29-2014, 01:26 PM   #3
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Its possible...

You build in a slight up thrust so as power increases it tends to pull the nose up.

You'll also want to have significant "differential" aileron throw to prevent adverse yaw issues.

Normally when doing 2 ch for turn and power you would use rudder instead of aileron because of the adverse yaw potentially making it turn opposed to the direction commanded.
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Old 10-08-2014, 05:28 AM   #4
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What are you going to do when the wind comes up? Power up, climb, get pushed back.

You want elevator control if you are going to fly in any kind of wind.

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Old 10-08-2014, 05:46 AM   #5
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Years ago... there was a guy with a 2 ch rudder-throttle plane that could do quite the aerobatic routine. Loops, snap-rolls. cuban-8's and even brief knife edge.

Its all in how you set the model up.... and pilot skill.
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Old 10-10-2014, 11:08 PM   #6
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Also we think that ailerons turn the plane. That's wrong. If your plane is flying level the ailerons will bank the plane and it will dive. Only the application of elevator picks the nose up and the horizontal vector of that elevator is what actually turns the plane.

Even if you have positive decalage and add power to a plane without an elevator, it is still the positive decalage in the horizontal stabilizer that turns the plane, acting as an elevator.

So--all turns are bank and yank, ailerons or not! The exception is the indoor 3D planes without rudder/aileron coupling which can actually (due to their outlandishly outsized rudders) actually flat turn without even banking.
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Old 12-03-2014, 02:18 AM   #7
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Originally Posted by SHD3920 View Post

I have this Sterling Estes rubber powered 30" wingspan kit that I will be building as an electric.
Can this be built with ONLY ailerons, and no tail-feather controls?
The ailerons used for turning, and the motor speed for lifting?
If you are still interested in an aileron only control system, check out these plans from Outerzone. Will give you an idea on how others have done it. Note that these are designs from many years ago. If anyone is currently flying aileron only I haven't heard about it.

http://www.outerzone.co.uk/plan_details.asp?ID=1338 Tokyo Echo

http://www.outerzone.co.uk/plan_details.asp?ID=1720 Quest

http://www.outerzone.co.uk/plan_details.asp?ID=5769 X-Craft

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Old 12-03-2014, 06:30 AM   #8
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There are a number of 'Supermarket Toy' models that use motor for climb / descent ... but none that I know of use ailerons. Usually turn is done by them having twin motors and differential thrust.
I have a twin engine P38 ... its purely motor control for direction and pitch. Does it fly well ? No. Does it fly ? About 5 sec's !!

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Old 12-03-2014, 07:24 AM   #9
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Yeah
Ailerons provide roll to your airplane, and you pull on the elevator to make the turn.

Many years ago, our model transmitters only had one pushbutton to control your model. That pushbutton sent a signal to your receiver that actuated a relay to step an escapement. The escapement would give you neutral rudder, right rudder, neutral, left, neutral, right and so on. It was powered by a rubber band. When the rubber band ran out, you have a free flight model.

As indicated, these models were rudder only. The rudder was often slanted backwards so a rudder command also provided a little up elevator effect in the process.

As for acrobatics with this, we had a club member long ago that could do stuff with this pushbutton radio that a few of us would have difficulty doing with a full proportional radio. He actually put a tiny 049 glow powered model completely through the windshield of an old car parked in the area.

For what it's worth, I've still got one of those Controlaire push button transmitters and its receiver. It operates on 27 Mhz, and after some 60 years it still works.

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Old 12-03-2014, 02:30 PM   #10
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The original post was from August. The OP has not posted in the thread since then so he has either lost interest or already resolved his question.

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