 For
centuries man has dreamed
of flying. Early artist
and inventors including
Leonardo da Vinci and
Otto Lilienthal drew sketches
and even built primitive
hang gliders in an effort
to soar like birds. In
the 1940's a pioneering
young NASA researcher
named Francis Rogallo
developed a new design
called the " flexible
wing". This design
was not only considered
for use in the Gemini
and Apollo Space programs,
but also spawned the birth
of hang gliding as a recreational
sport.
Additional Information
http://www.kittyhawk.com/rogallo/index.html#book
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