Wing warpers

[GrzeM]

Hi!
Which part of wing (how big) warped in wing-warper (pre-aileron) plane? I mean for example Fokker Eindecker or Morane L?
Do you have some photos?
G.

[DavidErrol]

Regards,
DavidErrol

[GrzeM]

Thanks, David!
It looks like wings warped downwards, but not upwards.
G.

[Dan_San_Abbott]

GrzeM:
The front spar was rigged solid, no movement. The rear spar was hinged at the fuselage. The rigging on the upper surface of the wings were rigged over pulleys attached to the top of the cabane strut.
On the control stick torque tube was a control lever from which two cables went down to a simular control lever mounted to torque tube atthe base of the lower cabane strut, mounted on the opposite end were crank arms, one for each wire of different lengths, short for the shortest cables and longer for the longer cables. The crank arms were paired. a set for the right hand cables and a set for the left side cables. The control cables went to fittings attached to the under surface of the wing and opposite to the upper surface cables.
In moving the control stick right or left would rotate the torque tube which would move the crank lever up or down and would move the simular lever at the base of the lower cabane strut, in turn rotated the torque tube which moved the differing length crank arms which would pull on the lower cables on one side and let out the cables on the opposite side. Whatever distance one side was pulled down, the opposite side was pulled up by the return cables on the upper side of the wings.
Blue skies,
Dan-San

[Brad]

Hmmmm... a captured Eindecker? That looks like Fokker landing gear, not Morane...

Brad

[GrzeM]

Many thanks, Dan-San!
G.

[wolfenbill]

You're right Brad, it's a captured Eindecker. My astute powers of observation completely overlooked the roundels. And if it looks like one wing is drooped downward it may be due to some damage. Wings don't like to stay warped. They'll straighten out if the pressure is relieved on the control stick or wheel.

[DavidErrol]

The E.III in the photo is E.210/16 which is today in the Science Museum in South Kensington, London. I think the photo was made to show the flexibility of the wing warping control feature....that's why I posted it. There's another photo taken from the rear at the same time on page 4 of C&C (GB) Vol.12, No. 1. In the rear view, the wings aren't twisted (or broken).

DavidErrol

[Cigogne]

The wing bending down in the photo isn't due to damage, but due to the fact that someone is putting pressure on the cable or pushing the wing down. (see Dan-Sans explanation for the exact workings!)

Cigogne