The Nasa Para Wings have their origin the the work of Francis Rogallo, he was investigating how to bring Apollo spaceships back to the earth. This principle has been used to build this impressive kites. The construction is quite simple: bit of fabric with quite some bridles. But the result is an interesting kite producing a lot of traction.
Tren de Nasas Jordi Morella
3 - 4 lines, NPWx esp