need to pick a 'fix' technique
Posted: Wed Jun 13, 2007 11:06 am
On my right elevator skin, I had a couple stiffener rivets that didn't want to set well down near the TE, and I drilled them out a couple times before deciding to use pop-rivets.
Unfortunately, they're oversized holes now... the TE is already bent, and I tried bucking oops rivets in there, but there's not enough space and I creased the skin a bit with a slipped bar. I don't have any blind rivets that are countersunk -42. I have some countersunk -44, but they're WAY too long, and would interfere with the rivet heads on the other side of the skin.
I have two options as I see it: wait until I can get ahold of some short-grip -4 flush blind rivets, or make some little squares of 0.025 or so alclad with #40 dimpled holes and back up the #30 holes and pull CCC-32's through the assembly.
if I choose option A, is there any reason why I couldn't go ahead and finish the elevator, then pull those last couple rivets after the fact?
if I choose option B, is there any issue with the fact that the holes in the skin and stiffener are oversized? Seems like the loads on those couple rivets probably aren't excessive, and any loads there are will be in tension rather than in shear. There's three adjacent stiffeners with the very aft hole that need filling, and one of them also has the second to aft hole that needs filling.
Unfortunately, they're oversized holes now... the TE is already bent, and I tried bucking oops rivets in there, but there's not enough space and I creased the skin a bit with a slipped bar. I don't have any blind rivets that are countersunk -42. I have some countersunk -44, but they're WAY too long, and would interfere with the rivet heads on the other side of the skin.
I have two options as I see it: wait until I can get ahold of some short-grip -4 flush blind rivets, or make some little squares of 0.025 or so alclad with #40 dimpled holes and back up the #30 holes and pull CCC-32's through the assembly.
if I choose option A, is there any reason why I couldn't go ahead and finish the elevator, then pull those last couple rivets after the fact?
if I choose option B, is there any issue with the fact that the holes in the skin and stiffener are oversized? Seems like the loads on those couple rivets probably aren't excessive, and any loads there are will be in tension rather than in shear. There's three adjacent stiffeners with the very aft hole that need filling, and one of them also has the second to aft hole that needs filling.