Mod 13, Unit 1, Quiz 2, Rivets
Which is correct concerning the use of a file
apply pressure on the forward stroke, only, except when filing very soft metals such as lead or aluminum
Rivet gauge, or transverse pitch is the distance between the
centers of rivets in adjacent rows
Select the alternative which best describes the function of the flute section of a twist drill
forms the cutting edges of the drill point
What is indicated by a black smoky residue streaming back from some of the rivets on an aircraft
fretting corrosion is occuring between the rivets and the skin
A rivet set used to drive MS20470 rivets should
have a slightly greater radius than the rivet head
The aluminum alloys used in aircraft construction are usually hardened by which method
heat treatment
Which statement is true regarding the inspection of a stressed skin metal wing assembly known to have been critically loaded
if genuine rivet tipping has occured, groups of consecutive rivet heads will be tipped in the same direction
Heat treated rivets D and DD series that are not driven within the prescribed time after heat treatment or removal from refrigeration
must be reheat treated before reuse
When an MS20470D rivet is installed, its full shear strength is obtained
only after a period of age hardening
Repairs or splices involving stringers on the lower surface of stressed skin metal wings are usually
permitted but are normally more critical in reference to strength in tension than similar repairs o the upper surface
Hole filling fastners ( for example, MS20470 rivets) should not be used in composite structures primarily because of the
possibility of causing delamination
Aircraft structural units, such as spars, engine supports, etc., which have been built up from sheet metal, are normally
repairable using approved methods
Which of the following need not be considered when determining minimum rivet spacing
rivet length
Parts fabricated from Alclad 2024-T3 aluminum sheet stock must have all
scratches, kinks, tool marks, nicks, etc., held to a minimum
The identifying marks on the heads of aluminum alloy rivets indicate the
specific alloy used in the manufacturer of the rivets
On a sheet metal fitting layout with a single bend, allow for stretching by
subtracting the setback from both legs
What is one of the determining factors which permits machine countersinking when flush riveting
thickness of the material is greater than the thickness of the rivet head
What is the minimum spacing for a single row of aircraft rivets
three times the diameter of the rivet shank
The general rule for finding the proper rivet diameter is
three times the thickness of the thickest sheet
What is the purpose of a gusset or gusset plate used in the construction and repair of aircraft structures
to join and reinforce intersecting structural members
The dimensions of an MS20430AD-4-8 rivet are
1/8 inch in diameter and 1/2 inch long
A single-lap sheet splice is to be used to repair a section of damaged aluminum skin. If a double row of 1/8 inch rivets is used, the minimum allowable overlap will be
13/16 inch
When drilling stainless steel, the drill used should have an included angle of
140 deg and turn at a low speed
The primary alloying agent of 2024-T3 is indicated by the number
2
Which part of the 2017-T36 aluminum alloy designation indicates the primary alloying agent used in its manufacturer
2
