Thread: Just doodles...
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Old January 19th 07, 06:00 PM posted to rec.aviation.homebuilt
cavelamb himself
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Default Just doodles...

Richard Riley wrote:
On Fri, 19 Jan 2007 07:30:58 GMT, cavelamb himself
wrote:


Well, hello again.

"That which doesn't kill me - has made a huge tactical mistake".

Not up to 100%, but I'm still kicking and getting my strength back.
Can't believe how long it has taken, but...
No new tumors!



One of the best short sentences in english. Right up there with "It's
benign"


You got that right, Richard.
Ranks right up there with, "Do it again, Stud?".

Only problem now is boredom!
A person can only watch TV for so long before his brains liquefy.

I've dusted off the sketches of the low wing design study and
worked on them up a bit. It seems to be coming along nicely.



I know it's just a sketch, but you're going to want some kind of
aileron differential for adverse yaw. Hinging them at the upper
surface is probably plenty.


Agreed, again.

Using a torque tube for the ailerons would place the rotation point
at the center of the tube. Simple hangErs mounted on the aft spar.

But playing around with the shape of the bellcranks should work out
as well. The outboard arms could angle forward a few degrees.
There is plenty of room for that as the total travel is small.
They poke thru the fuselage skin into the wing root.

While it doesn't show on the elevator animation (lazy) it looks like
there is probaby some aileron/elevator interaction. Tie the inboard end
of the pushrods to the back side of the stick horn and the ailerons
will deflect down a couple of degrees with aft stick and reflex up a
couple with forward stick.

I decided to keep the aileron mechanism out of the wing in order to
seal up a few ribs for an optional wet wing. The nose tank only holds
about 8 gallons. So maybe 6 to 11 gallons in each wing? Looks do-able.

Split flaps could be included very easily. Again, torque tube spar
that fits over the aileron tube (ala Wittman and Bede?). Wouldn't do
much for adding lift, since they would be so small, but could be helpful
for drag when you need it.

For the VW sport version I don't think I'd bother.
Keep it light and simple.

I know it's just a sketch, but if I ever decide to take on another
project, this will probably be the one.

It shouldn't cost more than about 5K with an 1835 VW.
Anybody want to buy a Vulcan?


Richard