so there is relay no ribs just cap strips from the le notched in the spar to the te.
thank you
mark
Hi Mark,
In traditional I-Beam construction, the "caps" of the I-Beam are shaped down to allow the underside of the ribs to glue flush to them. No "notching" of the ribs. A sharp corner causes stress risers as you know.
I have found it somewhat amusing that some think that the slot for the LOs that most I-Beam spars have is cause for alarm. A few people even go so far as to replace the spar caps with plywood. This is just a little ridiculous, IMHO. I do like to face the inside of the TE, and also sandwich between the caps and spar, a piece of .007 strip CF. The rear support spar is also often left out on the smaller I-Beamers, being replaced with "uprights" to keep the ribs from collapsing. On a plane such as the USA-1 however, that 1/16th' rear support spar is necessary. Even "X" bracing between the ribs will not lend enough support.
Built as designed, and covered correctly, an I-beam ship is very durable.
Bill <><