I need to know how anyone can see out of that thing on takeoff or landing. Seriously, does it come with a submarine periscope?
one calculates all of the above....bearing of the various parts, shear of the fasteners. some rivets and holes are under more stress than others based on the distance from the centroid of the pattern and moment of the load to that centroid. See post #188. Obviously you want your loads for each hole to be less than shear of the fastener or bearing failure of either of your joined parts. Knowing the loads on the joint and loading of the aircraft is critical. (I do not have formal training in "Aircraft Stress Analysis") There are also issues of cycle fatigue, and safety factor as regards how close to yield of the material you want to design for. ....it gets pretty complicated which is why "Aircraft Stress Analysis" is a specialty.Other folks here with formal training can feel free to correct me, but I do believe I have learned that aircraft riveted joints should be designed for "bearing failure" of the base metal sheet/tube and NOT "shear failure" of the fastener. Shear failure means that when the load reaches a certain point the first rivet fails, which puts the same total load on a fewer number of rivets, so the second rivet fails sooner than the first, which puts the load on even fewer rivets and then the third rivet fails really fast, and the structure "un-zips" almost instantly.
As I said, anyone who has the education to verify or contradict this, please do so ASAP
Those wires will be at resonance with something. Does anyone know about the fatigue properties of these rods if they are free to vibrate? There might also be a corrosion challenge where the CF meets metal.Additionally I understand there are synthetic fibers that have the right properties for use in a trust (whatever the correct amount of stretch/spring/strain is). So if the two "cables" in each bay (now light weight synthetic fibers) are lighter than a single diagonal aluminum tube... it might be a reasonably innovative and greatly simplified way to build an E-AB truss, reducing the number of fittings and parts count far below the old classic method.
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Don't know about the cost, but a piece of the 1/16" round Graphlite carbon rod would make a good low-stretch "cable" brace, with a threaded fitting bonded and/or swaged on to the ends.
I chased the "airplane in a suit case" rabbit down that hole and was lucky to come out sane(ish)...