Has anyone tried to do a plank "pitcheron" ?

Idea is :

- Rotating pivot for full wing ailerons;
- Elevators and any other things like crow brakes can be on the command surfaces.

Why for ?

Aileron authority should be MUUUUUCH higher, with smaller energy loss.

Elevator control, or lack thereof is the first thing that comes to mind.

IRJ

It could work if you used a large enough chord, large control surfaces and low enough aspect ratio. Without a big chord I think you might have problems getting enough pitch stability and pitch control from the small surfaces. You will need to also consider using a low camber foil and or dialling in a lot of diff and mix between the wing rotation and control surfaces.

Complex to set up and not sure that many advantages for the effort.

http://www.northcountyflyingmachines.com/snark.htm

https://www.rcgroups.com/forums/showthread.php?t=973557

Thank you for the info.
Below a drawing of what it might be.

You could also do a canard like that too. Might look more natural.

Just make it a plank "wingeron" with elevons on the back of each rotating wing panel, then it will work.
You can't "Crow Brake" without a tail, dude! The fuse will just be at a different incidence to the wing.

I'm waiting for the day one of the slope guys suggests a plane with nothing more than a weight inside, slewing around to control its direction.

Did I just say that?

OMG!

Unsubscribing NOW!

R,
Target

Originally Posted by target

.....

I'm waiting for the day one of the slope guys suggests a plane with nothing more than a weight inside, slewing around to control its direction.

......

Wouldn't that belong in the Scale forum? Someone was looking for a hang glider plan earlier weren't they?

Originally Posted by Sleedo

Wouldn't that belong in the Scale forum? Someone was looking for a hang glider plan earlier weren't they?

Sleedo, no fair I just about spit my eggs all over the computer screen

Originally Posted by target

I'm waiting for the day one of the slope guys suggests a plane with nothing more than a weight inside, slewing around to control its direction.

Done years ago, an AL tube and fabric Rogallo hang glider, 'pilot' was a GI Joe with servos to move the arms to shift weight and the battery and RX in his chest. Pre-computer mixing, you held your TX at a 45 deg angle. Flew like a brick but looked cool(*). Plans were in MAN or American Aircraft Modeler.

(*) which is sometimes reason enough to do things

Nauga,
who built two and would like to find his plans again

how does the elevator work?


the snark is cool but planks with tails are not planks any more.

RC - PARAGLIDER "ACRO" (2 min 31 sec)

Originally Posted by satinet

how does the elevator work?

the snark is cool but planks with tails are not planks any more.

Yeah, I've been intrigued by this plane ever since I saw the video a few years ago - it seemed to fly exceptionaly well. I'd love to know what section it had - I'm guessing a plank airfoil rather than a "conventional" one, otherwise the download the tail would need to produce from that small moment arm would be very high and it would be uncontrolable or at best very draggy.

Originally Posted by target

I'm waiting for the day one of the slope guys suggests a plane with nothing more than a weight inside, slewing around to control its direction.

Did I just say that?

I agree that a TWF with four additional flying surface does seem to be a solution searching for a problem, and overly complex. However, a variable CG could have advantages on a plank, though not as the primary control mechanism in pitch (I'm sure it wouldn't have enough authority), more a tuning aid to enable turns to be made with less elevator.

I've considered installing a servo actuated, longitudinally sliding weight near the CG, programmed to a slider on the TX in hopes of exploring the effects in realtime. Not as a dynamic mass but a moveable trim weight. My experience is limited so i don't really know what to look for most of the time regarding handling issues... "If it's flying, it must be pretty close !"

Have others been successful with this idea, I don't think i've seen it discussed here.