Bi-wing glider

Jono Richards wrote:
A thought came to me the other day...

Now, I have never seen a bi-wing glider, but was thinking,
could a bi-wing glider of, say 15m wingspan, effectively
have 30m performace?

This is probably a stupid uneducated question, and
I would imagine that it hasnt been done because it
wouldnt work! But its certainly something I am interested
in.

Think of it...a bi-wing ETA giving a total of 60m performance!


JR

Look up the "Easy Riser"
I flew one years ago. Tailless biplane (hang) glider.
positive stagger, weight shift pitch & tip rudder roll control.
A classic to fly, but had no performance advantage.
Ultimatly ended up being flown mostly as a powered ultralight.