Recently heard one of our customers heat treat AD rivets to about 200 F for one hour prior to installation so they drive easier. As a structural repair tech and current instructor I have never heard of this practice. My concern is they are annealing the rivets and they will never handle the...
We are a group of C-130 flight engineers trying to determine the amount of fuel that can be transferred in a manner not covered in the operations manual.
We need to determine a GPM or GPH for fuel flow into a tank.
The pipe length is 3 feet, the tube is .5 ID 6061 AL, Fluid density is .03...
I have read the great thread on blind fasteners but need to ask this question.
My SRM and the Cherry/Textron Cherrymax manual call for using a hole tolerance of .160-.164 for a nominal -5 diameter rivet. M7885/( )-5
The SRM calls for a #20 finish drill. The Cherry/Textron specs will not allow...
Standard practice is to bend across the grain for single bends.
My question relates to different bends in a flat sheet.
Say you need to make a triangular gusset that is riveted on 2 flanges in a 90 degree corner. If you layed the sheet out to where one bend was cross grain, the other bend...
I am soliciting suggestions for the appropriateness and usefulness of a new forum under the Aeronautical Engineering banner. "Aircraft Structures Best Practices" or any variation suggested by the board.
Specifically it will be devoted to the Technicial/Mechanic side of structural engineering...
Does anyone have a reference or data that specifies a suitable blind fastener to replace a NAS623 screws?
My SRM and other reference material does not address this problem.
Assume tension load is a factor.
TIA
Rob130
Is there a standard practice when installing protruding head upset flush, or flush both sides rivets, to determine the amount of material removed to allow the buck tail to be flush?
I would assume the dimension would be a specific width for the csk relative to the rivet diameter or a % of the...
I am a structural mechanic with 30 years military and civilian experience. Presently I teach structural repair courses for the military. I have come upon some conflicting repair designs for two different types of aircraft.
It involves pressurized flush skin repair over an obstructed area...
I have come upon some conflicting information on the E rivet. TO 1-1A-9 Aerospace Metals Manual pg.3-20 para f. states D/DD/E rivets can be kept refrigerated at -10 degrees
and must be driven within 30 minutes.
I was under the assumption that the E rivet did not require any special handling...
Does a table exist to compare the static joint strength of a NAS1097AD rivet to the MS20426AD rivet?
MIL-HDBK-5H on shows the NAS1097E rivet for comparison. I teach a course in structural repair and would find this comparison useful.
