It's probably not on your CD.
Yes I did. I received money from Ed Anderson,
Butch, and Peter Cowan.
This was even before Butch started all his
development, I think.
I bought some carbon cloth that I still have,
waiting...
--
Perry Mick
*********************************************************
Hi Perry;
I know you've been long prepared and waiting for the
Shanks and Fixture from me. But do not despair, they'll
shortly be on the way to you.......Like mom used to
say, "A good roast takes longer than a bad one" :)
Believe it or not I've been most anxious to get to the
Goo Gooing manufacturing of the Blades, as it FASCINATES
me to no end. I can't wait to see this process in
progress, I sure wish we lived closer to each other so I
could help you and gain some knowledge and confidence in
the process........I guess for now, I'll just have to
settle for questions and answers from you and the rest.
So I'll start by asking:
-Describe the procedure, only if it's BOILERPLATE, If
it's PROPRIETARY don't.
-Materials?
-Are you going to use very dense foam as core or wood?
-Are you making a Mold? or are you using Paul's template
trick?
My procedure? I can't say it's scientific. It's more like build it
as bulletproof as possible and test it. I've built two carbon fans now,
one for myself that I've been flying for almost 3 years. The other for a
customer. Those were built in molds with the blades being virtually
solid carbon, +/- 30 degree plies and longitudinal plies.
The mold was for the rear blade surface, the forward surface
was shaped by hand with templates. What I do is just extrapolation
of Rutan techniques learned from building a LEZ.
LAEV blades will be much larger, much thicker, so the solid
carbon won't be necessary or desirable. I'm thinking it will
be two molds, one for the each side of the blade. Planning to
use a mold as it will be easier to produce copies than Paul's
fly-away method - which is more in the spirit of Rutan moldless
composite construction - but is best for one-off items (like plans
built Long-EZs). The shank will be wrapped with one or two
plies of glass before adding the carbon blade to insulate the
carbon from the steel. With the method I have in mind, the blade
would be a hollow shell when it comes out of the second mold.
Would then wrap the outside with a couple plies of kevlar oriented
+/-45 degrees for torsion. The filler material would be injected
into the end of the blade. Not certain yet what would be the best
stuff to use for the filler material, anyone have any suggestions?
One thing I thought of was molten plastic. Microballons/epoxy
may tend to crack. I don't really like that two-part expandable
foam stuff.
I'll take photos as I go and let Paul post them.
BTW Perry, I prognosticate you're going to be very busy
building custom Blades for most of us :-)
Take care,
Butch
I wouldn't have a problem with that. I'd like to go to FL and
witness some of the testing myself.
--
Perry Mick
Duckt N7XR
http://www.ductedfan.com
No need Perry. We are building a test stand down here as I want
to make it a dyno too. Mufflers, intake manifolds, etc., etc.. We will
use your blades as a prop load for the dyno.
IMHO Tracy is really too busy to spend a lot of time running his
test stand.
Paul Lamar
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