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Old May 18, 2012, 05:38 PM
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Knoll53's Avatar
United States, CA, Marina
Joined Sep 2006
2,861 Posts
Mini-HowTo
Horten IV elevon linkage

After toying around a bit with this concept, I've come up with a rather easy method for what appears to be a very complex linkage arrangement. Materials are brass tubing, music wire and solder.

This prototype does not quite have the correct geometry with more deflection in one direction rather than the other, but overall deflection is good. Would require a very big arm on the servo to drive it. All do-able. Next time I'll use a drill press to drill the tubing for the axle.

Kent

Horten IV elevon linkage (0 min 22 sec)
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Old May 19, 2012, 08:52 AM
An itch?. Scratch build.
eflightray's Avatar
South Wales U.K.
Joined Mar 2003
13,645 Posts
Sorry, but here comes mister awkward.

Why have you made something so 'complicated' when individual servos working push rods to control horns are so easy ?

The rotating angled rod still seems to take up room within the wing section if it's for scale reasons, and you still need two servos.

Also if a totally hidden control was required, wouldn't an RDS drive be easier ?
Remote rds drive thread

But all that said, your mechanism is fascinating
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Old May 22, 2012, 03:53 PM
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Knoll53's Avatar
United States, CA, Marina
Joined Sep 2006
2,861 Posts
Welcome mister awkward.

This is a scale version of the linkage used on the Horten IV. Just another unique example from a truly unique sailplane. Although my version is just a prototype, it is more robust than expected. With a little more development, it could be useful.

As you've noted, this linkage is entirely internal, like RDS. But unlike RDS, this linkage and tolerate sand, which is a given for me.

Also, multiple elevons could be operated by one pushrod. Although they are tied together by the pushrod, each elevon can have a different deflection, depending on geometry.

Kent
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