Twin CFS Plane

by ghostrider03z | December 3, 2013 | (0) Posted in Projects

Even though I cover everything in the video, here are the specs.

Motors(From this kit): http://www.rctimer.com/product_786.html

Esc: Two 30 amp ESC's

Battery: 3s 2200mah

Full four channel control, however I really only need rudder.

It does not have differential throttle and I probably won't add it since I really dont think of driving it around on the ground as its main goal as a plane.

I will add more suface to the horizonal and vertical stabilizer, hopefully improving stability.

If you guys want, I can make a video going over the dimensions.

I would write more, but I didn't make the video for no reason.

Hope you guys enjoy.

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COMMENTS

alibopo on December 7, 2013
Nice slow flyer! I know you were flying high-alpha at times - but at other times under reasonable throttle, the plane looked and flew tail-heavy. I'm not sure why you felt you needed bigger tail surfaces - just get the balance right, and the tail surfaces will acquire greater authority due to them requiring less input to change the plane's attitude. Just now the tail is supporting too much of the plane's weight, so some of the control input is lost in that task. Ignoring inertia, balance something (anything) well-enough and it takes almost nothing to move it.
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ghostrider03z on December 7, 2013
Actually, I originally had a 1000mah battery strapped in with my 2200. I flew it and felt it to be quite nose heavy so I just took it out. I never really went into depth with the balance so you are probably right, but this plane flies more fun tailish heavy.
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alibopo on December 8, 2013
If you feel like experimenting again, the easiest way to get balance would be to shift your wing back - what's four new skewer holes between friends! :) That would avoid adding extra weight on the nose. Properly balanced this would be a real smooth flyer - none of that wing flutter from near-stall flying - and you wouldn't need to keep popping the throttle to stop the tail sinking.
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ghostrider03z on December 8, 2013
I would move it back, but it would start looking really funny, there is already a ton of of nose in front of the wing lol.
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alibopo on December 9, 2013
Aesthetics! Hah! :) Seriously, have a look at the turbo-prop Pilatus Porter - now there's a plane with a real sticky-out nose. Still, as you say it's more fun as it is, and isn't that is what it's really about. Cheers :)
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alibopo on December 9, 2013
The Pilatus isn't the best example either - there's loads of cargo and passenger planes with wing mounted engines that have the wing mounted near-enough centrally on the fuselage profile. Wing placement is controlled by the balance point. In 'real life' with no engine 'up front' to balance the rear of the plane, the wing (and the centre of lift) needs to move back to where it can best do the job; C-27J Spartan, DHC-4 Caribou, Antonov AN-12, DHC-6 Twin Otter... and almost any passenger jet you've ever travelled on.
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Twin CFS Plane