I've always thought the purpose of countersinking was purely aesthetic. The main reason being to have a smooth surface once screwed, riveted or otherwise. Is this the case or is there some added bonus of strength?
I'm asking because I did my rivets on the read spar of the VS last night. Onbe of the previous parts I had countersunk was the rear spar doubler. Here's a picture from someone elses log;
This particular piece gets riveted to the rear spar and wouldn't be visible on the final build, it also doesn't have anything directly butt up to it. Only thing I could think of is they wanted to reduce the rivet length, so they had it countersunk...
I'm asking because I did my rivets on the read spar of the VS last night. Onbe of the previous parts I had countersunk was the rear spar doubler. Here's a picture from someone elses log;
This particular piece gets riveted to the rear spar and wouldn't be visible on the final build, it also doesn't have anything directly butt up to it. Only thing I could think of is they wanted to reduce the rivet length, so they had it countersunk...