The description doesn't sound too different from many of the non-composite
slopers that were around in the early and mid-80's.  A plane that comes to
mind is the original non-composite CR Turbo, which had a wood fuselage and
balsa sheeted foam wing.  It could fly in light lift, or ballasted it up
for heavy conditions, where it was quite fast.  I'm sure there were lots of
similar planes out there at the time...maybe some are still available?  It
seems like wood fuselages are pretty rare, these days on slope planes, though.

What comes to mind to me would be a desing something along the lines of
wooden Multiplex Lucky, a 2-3 channel plane which flies well in both light
and heavy conditions.  

Here's what I'm thinking:

- 72-76" span
-could be built with ailerons, or ailerons and flaps
-RG-15 airfoil
-Single or double taper planform
-Blue or pink core wing with 1/64" ply or obecci sheeting, maybe a carbon
capped spar.
-Conventional tail
-Optional rudder
-Rectangular cross section balsa fuselage with ply formers and
reinforcemnt.  Possibly fiberglass and carbon reinforcement as well.  I'm
thinking of something along the lines of the original CR Contender wood
fuselage (only not a wingeron), if anyone remembers that plane.

I think the above could be built light enough to fly in light lift, yet
still be plenty strong to be ballasted up and go really fast.
Unfortunately, that's the extent of my design talents. :)

-
>
>On Wed, 15 May 2002, Ryan Flowers wrote:
>
>>OK I'm here at work for a 14 hour day, mind wandering back to slope soaring
>>every so often, wondering when I'll get out next, as I have to work 60 hours
>>this week.
>>
>>So, I thought I'd raise a question that we can all debate, to stir things up
>>a bit. Please reply to list only.
>>
>>I'd like to present a design challenge.
>>
>>Minimal composites (no bagging, etc).  Fiberglass, CF tape OK.
>>Minimum 48" span, max 90".
>>variable wing loading, from 7oz to 15oz ft/sq using ballast
>>Radio to be used is Hitec Focus 3 with 2-4 servos.
>>Any planform OK.  dihedral/polyhedral OK.
>>Any airfoil is OK.
>>
>>The idea would be to make a plane that was well suited to flying light slope
>>lift, but strong enough (and can be ballasted) to fly in the heaviest
>>conditions.  being able to slow down and thermal would be a benefit but not
>>required.   Idiot proof (in construction and durability) is important, but
>>not as important as being more versatile than the average glider.
>>
>>The speding limit on materials would be $100, not including radio.
>>
>>I'm no judge but the design ideas I like best will win someone a free
>>website on my server :) If you want a domain name for your website you can
>>buy it and I'll host it for free, otherwise it'll be a domain name like
>>yourname.myname.com.
>>
>>Any takers?
>>
>>___________
>>Ryan Flowers
>>
>>
>>
>>
>>
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