Air Frame (Rivets)
Alloy 2117 rivets are heat treated
By the manufacturer and do not require heat treatment before being driven.
Are less subject to corrosion than uncoated aluminum alloys
Clad aluminum alloys are used in aircraft because they:
Rivet pitch
Distance between the centers of adjacent rivets in the same row
Must be reheat treated before use.
Heat-treated rivets in the D and DD series that are not driven within the prescribed time after heat treatment or removal from refrigeration:
Possibility of causing Delamination
Hole filling fasteners (for example, MS20470 rivets) should not be used in composite structures primarily because of the:
56
How many MS20470 AD-4-6 rivets will be required to attach a 10 x 5 inch plate, using a single row of rivets, minimum edge distance, and 4D spacing?
Shear Failure
Joggles in removed rivet shanks would indicate partial
Overall length of 5/16 inch.
MS20426AD-6-5 indicates a countersunk rivet which has
Annealing of aluminum
Removes stresses caused by forming
Heat treatment
The aluminum alloys used in aircraft construction are usually hardened by which method?
1/8 inch in diameter and 1/2 inch long
The dimensions of an MS20430AD-4-8 rivet are:
Soften to facilitate riveting
A DD rivet is heat treated before use to:
Diameter of the rivets being used.
A factor which determines the minimum space between rivets is the:
Have a slightly greater radius than the rivet head
A rivet set used to drive MS20470 rivets should:
1/4 inch
A sheet metal repair is to be made using two pieces of 0.040-inch aluminum riveted together. All rivet holes are drilled for 3/32-inch rivets. The length of the rivets to be used will be:
5/16 inch
A sheet metal repair is to be made using two pieces of 0.0625-inch aluminum riveted together. All rivet holes are drilled for 1/8-inch rivets. The length of the rivets to be used will be
Shear loads
A well-designed rivet joint will subject the rivets to
Repairable, using approved methods
Aircraft structural units, such as spars, engine supports, etc., which have been built up from sheet metal, are normally:
One and one-half times the rivet diameter plus .096 inch
The length of a rivet to be used to join a sheet of .032-inch and .064-inch aluminum alloy should be equal to:
5/16 inch.
The length of rivet to be chosen when making a structural repair that involves the joining of 0.032-inch and 0.064-inch aluminum sheet, drilled with a No. 30 drill, is:
2.
The primary alloying agent of 2024-T3 is indicated by the number:
One and one-half times the diameter of the rivet shank
The shop head of a rivet should be:
Attach parts or components with screws to sheet metal
Threaded rivets (Rivnuts) are commonly used to:
Low strength characteristics
Under certain conditions, type A rivets are not used because of their:
Drill to the base of the manufactured rivet head with a drill one size smaller than the rivet shank and remove the rivet with a punch.
What is generally the best procedure to use when removing a solid shank rivet?
Thickness of the material is greater than the thickness of the rivet head.
What is one of the determining factors which permits machine countersinking when flush riveting?
Three times the diameter of the rivet shank.
What is the minimum spacing for a single row of aircraft rivets?
To retard age hardening
What is the purpose of refrigerating 2017 and 2024 aluminum alloy rivets after heat treatment?
118°
What should be the included angle of a twist drill for hard metal?
90°
What should be the included angle of a twist drill for soft metals?
Shear
What type loads cause the most rivet failures?
Only after a period of age hardening.
When an MS20470D rivet is installed, its full shear strength is obtained
Lower speed with more pressure applied to the drill
When comparing the machining techniques for stainless steel sheet material to those for aluminum alloy sheet, it is normally considered good practice to drill the stainless steel at a:
140° and turn at a low speed.
When drilling stainless steel, the drill used should have an included angle of:
Straighten cold and Reinforce
When straightening members made of 2024-T4, you should:
Apply pressure on the forward stroke, only, except when filing very soft metals such as lead or aluminum.
Which is correct concerning the use of a file?
Rivet length
Which of the following need not be considered when determining minimum rivet spacing?
2
Which part of the 2017-T36 aluminum alloy designation indicates the primary alloying agent used in its manufacture?
5056 aluminum
Which rivet is used for riveting magnesium alloy structures?
Monel
Which rivet is used for riveting nickel-steel alloys?
2117-T3
Which rivet may be used as received without further treatment?
MS20470AD-4-4
Which rivets should be selected to join two sheets of .032-inch aluminum?
Steel Parts
Mild steel rivets are used for riveting:
Dimples
Most rivets used in aircraft construction have:
