charisma,
Maybe this is a start.
http://www.aircraftdesigns.com/Page7.htm
I'm sure there's at least one other program out there. Can't remember where I found it though.
If I come across it I'll let you know
Bobster
Royce,
I have no usefull information to pass on as yet (I seem to recall I have photocopied part of a 1970's book which contains some info on contruction of composite rotorblades) but I came across this site while searching for NACA 8-H-12 airfoil data.
http://www.icon.fi/~jtki/gyrocopt.html...
