My new concept of a control system

Willi Von Klugerman · 6 March 2010, 07:03 PM

I have devised a new way for a control system which is a combonation of ailerons and wing warping.The idea is that a four feet portion of the aircrafts wing (starting from the wing tips) would twist.Each flap is held by a single spar which also enables it to rotate.It would be controled just like any other aircraft.

John McKenzie · 7 March 2010, 12:20 AM

Hi Willi ......Looks like that dastardly A H G Fokker has stolen your idea and has gone and used it in his V1

Leif Ohlsson · 7 March 2010, 08:43 AM

... or Hanns Klemm, in his Klemm L20 (although just a single feet, not four, and working in conjunction with normal ailerons.

Photos are from a model [Source: Photos]

Leif Ohlsson · 7 March 2010, 08:45 AM

Sketches are original Hanns Klemm. [Source: Sketches]

Leif

John McKenzie · 7 March 2010, 09:19 AM

So it looks like Klemm copied Fokker , and Fokker copied Willi 's idea ..Correct ?

Willi Von Klugerman · 7 March 2010, 04:44 PM

Yep,looks like Fokker and Klemm had beaten me to the punch!

But to make up for that,I had just designed a new machine thats 100% original.The frame of the fuselage consists of only 11 bamboo rods and the cockpit being on top of the wing.I designate it as the Lee Flyer IV.

John McKenzie · 7 March 2010, 10:07 PM

" Think I'll get one of those Muriel "......

"I shouldn't Willi , you're close enough to your wings already ! "

Custermen · 13 March 2010, 07:08 PM

This may be a little off topic, but I had to take this opportunity to post my 1st time on this Forum.

There was an aircraft made in the 1960s that used warped-wing technology. The XV-11 "Marvel" was a STOL (Short-Takeoff and Landing) experimental aircraft that was designed and built by the Raspett Lab at Mississippi State University. The aircraft was a pusher aircraft made of composite material. The composite material made the warped-wing design work.

It also used boundary layer control, which the lab had been experimenting with on various aircraft. The BLC design featured the top surface of the wing with rows of tiny holes. The aircraft had a vacuum system that sucked air thru the holes into the wing, thus reducing the air pressure and allowed the boundary layer to remain attached to the wing at high angles of attack.

The wing warping was accomplished by having a series of "Ribs" that fit inside the wing. The ribs were shaped in a slight curve. The controls would rotate the ribs so the curve would move from being aligned fore/aft to a position that was vertical. The wing's skin had layers of composite that overlapped in some manner(I don't recall). As the curved ribs rotated down, the trailing edge of the wing would bend down, almost like a flap.

I can't find a photo of it. There is an article about it on Wikipedia with the Spec's.

Steve

David Paule · 29 March 2010, 07:32 AM

Controllable wingtips offer a unique opportunity for spin entry. Since they can be controlled to develop a stalling angle when the rest of the wing hasn't quite stalled yet, the wing will pick up a lot more drag on that one side while it stalls and loses lift, and snap into a spin.

Snap rolls on take-off and landing will become routine, especially with crosswinds.

This is a very exciting concept. Not what you'd call "safe," but plenty exciting.
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