Pattern for rivets and belly fire protection on RV-10
I am planning on putting a sandwich of either Titanium or SS and Fiberfrax on the belly of my RV-10. I have a QB fuselage so the skins are already riveted on. The forward floor ribs of the RV-10 angle out as opposed to straight back. Does the sandwich need to be riveted to the doubled structure of the skin and the floor rib or can I just make a rectangular sandwich and capture it by just riveting through the skin? If I do the later, I would obviously try to capture as many ribs as possible.
If it is recommended not to rivet just to the skin, the shape of the sandwich will be a trapezoid and the seam running front to back will be exposed a bit to the slipstream. Might that cause any potential problems in peel-back?
I am about to put the floorboards in and it would be much easier to put the sandwich in now while I have access to the floor ribs and can easily drill through them.
I will probably go just 18 inches back from the firewall which would cover the fuel pump. According to pictures and accounts of an actual RV-10 fuel fire, the fire damage did not extend that far back.
Thank you in advance for any feedback.
Builders Blog http://elstien.us/wordpress/
Tail Kit delivered 6-2013
Started building April 2014
QB Wing and Fuse Delivered December 2015
Finished QB wings on September 2018
Moved to Port Orange Florida November 2018
Dues Paid through 2019