"Shin Gou" wrote in message
om...
A friend of mine is planning to build a trike (powered hang glider).
Could anyone recommend some books about hang glider wing aerodynamics
and design?

Thank you in advance.

Shin Gou

Shin

The Rogallo wing http://en.wikipedia.org/wiki/Rogallo_wing
has a trick associated with it. I do not remember the specifics, but it has
something to do with rigging the outside trailing edge so that it deforms
differently than it otherwise would. This is what makes it stable.

We had a Russian fellow killed up here a few years back, because his new
design did not include this.

I can't find a referance to this specifically, but this:
http://www.davisstraub.com/Glide/airworthiness.htm
might help.

Tell your friend to be careful. The differance between a good trike and a
death trap is very small.