Saturday we got the rib up to 2.2 psi. At that pressure it supported a 55 pound side load without distorting. I think this rib has told us all it can. The next test rib will incorporate mounts for the leading and trailing edge inflated spars and a few upgrade to the end cap interfaces.
Glad to see you exceeded your goal of 2 psi and 50 lb load for the rib.
Well done!