|Quoting traindoc (Thread starter):|
The damage to aluminum skinned A/C is relatively straight forward: you cut out the damaged area and rivet in the replacement. Obviously, carbon fiber cannot be repaired this way
Correct, you can't rivet on carbon fiber. You cut out the damaged area and connect a replacement with non-expanding fasteners (Hi-Loks or similar). You can use aluminum (temporary), titanium, or new carbon.
You can patch it the the same way you patch aluminum now. Or, if you want a cleaner repair, you do a scarf repair with a new layup. This is exactly the same repair that's used on nacelles today, which are almost exclusively FRP and have been for decades.