A heretical statement, but I was wondering when CF ISN'T the answer ? If I have a structural design which is STIFFNESS driven, like a wing or telescope, rather than strength driven, is CF "better".

I've been studying the concept of specific modulus, or stiffness-to-weight ratio and ended up in a confusion of different design approaches related to the telescope project I mentioned last week.

Steve

Yes, well that's obvious, but I'm asking more from the structural engineering perspective.

Steve