The aluminum tube in my recent 6” static test weighed 13.9 lbsm.; a similar
Carbon fiber tube in my possession weighs 5.5 lbsm and is tested to burst
at almost twice the aluminum tubes’s burst pressure....
So I’m looking at composite tubing: I observe that the rocket industry
pretty much universally uses pins as fasteners, yet pins are the least
strong choice, analytically.
Is there some obvious—or not—reason that I should not be using a
countersunk fastener with a composite tube?
Bill