Wing Spar Photo/Diagram wanted
Was trying to explain to someone what a wing spar for a GA type aircraft is.does, looks like, how its made etc, but as I;venever seen an aircraft pulled apart to the extent where the wing spar/s are viable, I'm not sure myself.
Does anyone out there have have a photo, diagram, drawings of a spar, any GA aircraft will do, but would like a Chieftain PA31 for example would be much appreciated.
Cheers