"Rich S." wrote:

"Richard Lamb" wrote in message
...

there is a reference dimension under the fuselage = 48"
and a little lower just above the frames is a foot/inch scale.

that help?

Got it!

Rich S..

Great!

Now, your assignment, should you choose to accept it, is to draw up
a reeeeeaaaaaaly light weight retract system for it bg.

Gear mounts on front side of the main spar (sorry, no tricycles)
5x5 wheels with MacGreary rubber,
band brakes with cables? or hydraulic actuation.

If need be (and it will), we'll rework the root using that 15%
Ribblet
airfoil (get all the buzz-words in!) or a 23012/15 (nil CP travel -
important
in such a tiny package) and add a P-51 style planform to provide
room for
the wheels.

now we're too cool...


Some other minor wing concerns:

At stall speeds, the root chord still has an RN (Reynolds Number)
of at least 3 million.

But the tips, being shorter, show barely 2 million.
So what does that imply?

Well, for one, many of the fancy airfoils get pretty lame below
three meg.
Which might result in:
Sloppy aileron control at low speeds at best?
Or even a TIP stall - i,e: a nice fun wing drop at the break (or
before???)

Looking for an airfoil that performs well at these low RN led me to
the
old NACA 4 digit 2312. It is considered a turbulent airfoil, rather
than
a laminar type. But it ought to hold on a little better when slow.

Which means that the rib patterns would be a pure-D beast to loft,
were if not for a little CAD magic.

The more ribs (assuming they fit right) and the thicker the skin the
better
we can hold the desired airfoil shape - but both mean _heavier_.
The dreaded C word - (compromise),

Oh golly, well, that at least scratches the surface....