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2202 final
George
| Question | Answer |
|---|---|
| A well designed rivet joint will subject the rivets to? | sheer loads |
| the main difference between lockbolt/huckbolt tension and shear fasteners other than their application is the? | number of locking color grooves |
| Alloy 2117 rivets are heat treated? | By the manufacturer and do not require heat treatment before being driven |
| The general rule for finding the proper rivet diameter is? | Three times the thickness of the thickest sheet |
| The sharp head of a rivet should be? | 1 and 1/2 times the diameter of the rivet Shank |
| One of the main advantages of hi-lock type fasteners over earlier generations is that? | They can be installed with ordinary hand tools |
| the markings on the head of a Dzus fastener identify the? | Body diameter, type of head, and length of the fastener |
| The Dzus Turn lock fastener consists of a stud, grommet, and receptacle. The stud length is measured in? | Hundredths of an inch |
| The Dzus turn lock fastener consists of a stud, grommet, and receptacle. The stud diameter is measured in? | Sixteenths of an inch |
| threaded rivets (rivnuts) are commonly used to? | Attach parts or components with screws to sheet metal |
| the installation of cherrymax and Olympic-lok Rivets is accomplished by utilizing? | A pulling tool |
| 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 |
| select the alternative which best describes the function of a flute section of A twist drill? | Forms the cutting edges of the drill point |
| 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? | 56 |
| Longitudinal (fore and aft) Structural members of a semi monocoque fuselage are called? | Longerons and stringers |
| shallow scratches in sheet metal may be repaired by? | Burnishing |
| What should be the included angle of a twist drill for soft metals? | 90 degrees |
| when comparing the machining techniques for stainless steel sheet material to those four aluminum alloy sheet, it is normally considered good practice to drill the stainless steel at a? | Lower speed with more pressure applied to the drill |
| 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 |
| 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 occurred, groups of consecutive rivet heads will be tipped in the same direction |
| What is the minimum edge distance for aircraft rivets? | Two times the diameter of the rivet Shank |
| when drilling stainless steel, the drill used should have an included angle of? | 140 degrees and turn at a low speed |
| what is the minimum spacing for a single row of aircraft rivets? | Three times the diameter of the rivet shank |
| 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 |
| 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 |
| When repairing a small hole on a metal stressed skin, the major consideration in the design of the patch should be? | The shear strength of the riveted joint |
| which procedure is correct when using a reamer to finish a drilled hole to the correct size? | Turn the reamer only in the cutting direction |
| 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 to the upper surface |
| when straightening members made of 2024-T4, you should? | Straighten cold and reinforce |
| clad aluminum alloys are used in aircraft because they? | Are less subject to corrosion than uncoated aluminum alloys |
| Which statement is true regarding a cantilever wing? | No external bracing is needed |
| aircraft structural units, such as spars, engine supports, etc., which have been built up from sheet metal, are normally? | Repairable, using approved methods |
| a factor which determines the minimum space between rivets is the? | Diameter of the rivet being used |
| what should be the included angle of A twist drill for hard metal? | 118 degrees |
| parts fabricated from alclad 2024-T3 aluminum sheet stock must have all? | Scratches, kinks, tool marks, Nicks, ETC., must be held to a minimum |
| the monocoque fuselage relies largely on the strength of? | Skin or covering |
| which parts of a semi-monocoque fuselage prevents tension and compression from bending the fuselage? | Longerons and stringers |
| rivet gauge, or transverse pitch is the distance between the? | Centers of rivets in adjacent rows |
| rivet pitch is the distance between the? | Centers of adjacent rivets in the same row |
| what is indicated by a black “Smokey" residue streaming back from some of the rivets on an aircraft? | Fretting corrosion is occurring between the rivets and the skin |
| The identifying marks on the heads of aluminum alloy rivets indicate the? | Specific alloy used in the manufacture of the rivets |
| When an MS20470D rivet is installed, it's full shear strength is obtained? | Only after a period of age hardening |
| which of the following need not be considered when determining minimum rivet spacing? | Rivet length |
| what is the purpose of refrigerating 2017 and 2024 aluminum alloy rivets after heat treatment? | To retard age hardening |
| under certain conditions, type A rivets are not used because of their? | Low strength characteristics |
| a rivet set used to drive MS20470 Rivets should? | Have a slightly greater radius than the rivet head |
| Heat-treated rivets in the D and DD series that are not driven within the prescribed time after heat treatment or removal from refrigeration? | Must be reheat-treated before use |
| The dimensions of a MS20430AD-4-8 Rivet are? | 1/8 inch in diameter and 1/2 inch long |
| 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 manufacture? | 2 |
| Sheet metal repair is to be made using two pieces of 0.040 inch aluminum rivet together. All rivet holes are drilled for 3/32 inch rivets. The length of the rivets to be used will be? | 1/4 inch |
| most of its used on aircraft construction have? | Dimples |
| MS20426AD-6-5 Indicates a countersunk rivet which has? | an overall length of 5/16 inch |
| Which rivet may be used as received without further treatment? | 2117-T3 |
| which rivets should be selected to join two sheets of .032 inch aluminum? | MS20470AD-4-4 |
| 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? | 5/16 |
| Mild steel rivets are used for riveting? | Steel parts |
| a DD rivet is heat treated before use to? | Soften to facilitate riveting |
| when riveting dissimilar metals together, what precautions must be taken to prevent an electrolytic action? | Place a protective separator between areas of potential electrical difference |
| the length of a rivet to be used to join a sheet of .032 inch and .064 inch aluminum alloy should be equal to? | 1 and 1/2 times the rivet diameter plus .096 inch |
| What is generally the best procedure to use when removing a solid Shank rivet? | 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 |
| Joggles in removed rivet Shanks would indicate partial? | Sheer failure |
| What type loads cause the most rivet failures? | Shear |
| which rivet is used for riveting magnesium alloy structures? | 5056 aluminum |
| which rivet is used for riveting nickel-steel alloys? | Monel |
| 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? | 5/16 Inch |
| if a streamlined cover plate is to be hand formed using a form block, a piece of dead soft aluminum should first be placed over the hollow portion of the mold and securely fastened in place. The bumping operation should be? | Started by tapping the aluminum lightly around the edges and gradually working down into the center |
| A piece of flat stock that is to be bent to a closed angle of 15 degrees must be bent through an angle of? | 165 degrees |
| when a piece of aluminum alloy is to be bent using a minimum radius for the type and thickness of material,? | The layout should be made so that the bend will be 90 degrees to the grain of the sheet |
| layout blank length of a piece of metal from which a simple L-shaped bracket 3 inches by 1 inch is to be bent depends upon the radius of the desired bend. The bracket which will require the greatest amount of material is one which has a bend radius of? | 1/8 inch |
| if it is necessary to compute a bend allowance problem and bend allowance tables are not available, The neutral axis of the band can be? | Found by adding approximately one-half of the stock thickness to the bend radius |
| Unless otherwise specified, the radius of a bend is the? | Inside radius of the metal being formed |
| the sharpest bend that can be placed in a piece of metal without critically weakening the part is called the? | Minimum radius of bend |
| the most important factors needed to make a flat pattern layout are? | Radius, thickness, and degree of bend |
| a piece of sheet metal is bent to a certain radius. The curvature of the bend is referred to as the? | Bend radius |
| you can distinguish between aluminum and aluminum alloy by? | Testing with a 10 percent solution of caustic soda |
| the purpose of a joggle is to? | Increase obstruction for a sheet or an extrusion |
| When bending metal, the material on the outside of the curve stretches while the material on the inside of the curve compresses. That part of the material which is not affected by either stress is the? | Neutral line |
| The sight line on a sheet metal flat layout to be bent in a cornice or box break is measured and marked? | One radius from the bend tangent line that is placed under the brake |
| on a sheet metal fitting layout with a single bend, allow for stretching by? | Subtracting the setback from both legs |
| the aluminum alloys used in aircraft construction are usually hardened by which method? | Heat treatment |
| In gas tungsten arc (GTA) welding, a stream of inert gases used to? | Prevent the formation of oxides in the puddle |
| which statement best describes magnesium welding? | Filler rod should be the same composition as base metal |
| Which statement is true in regard to welding heat-treated magnesium? | The welded section does not have the strength of the original metal |
| The oxyacetylene Flame for silver soldering should be? | Neutral |
| why is it necessary to use flux in all silver soldering operations? | To chemically clean the base metal of oxide film |
| engine mount members should preferably be repaired by using a? | Larger diameter tube with fish mouth and rosette welds |
| What method of repair is recommended for a steel tube longeron dented at a cluster? | Welded patch plate |
| welding over brazed or soldered joints is? | Not permitted |
| which statement concerning soldering is correct? | Joints in electric wire to be soldered Should be mechanically secure prior to soldering |
| A resurfaced soldering iron cannot be used effectively until after the working fase has been? | Tinned |
| which of the following can normally be welded without adversely affecting strength? 1. Aircraft bolts, 2. SAE 4130 Chrome/Molybdenum Tubing, 3. Spring steel struts, 4. Most heat-treated steel/nickel alloy components? | 2 |
| in selecting a torch tip size to use in welding, the size of the tip opening determines the? | Amount of heat applied to the work |
| why should a carburizing flame be avoided when welding steel? | It hardens the surface |
| Important considerations when selecting welding rod is? | Material compatibility |
| the oxyacetylene flame used for aluminum welding should? | Be neutral and soft |
| a very thin and pointed tip on a soldering copper is undesirable because it will? | Cool too rapidly |
| Filing or grinding a Weld bead is considered to be? | A way to bring about strength reduction in joint |
| Acetylene at a line pressure above 15 PSI is? | Dangerously unstable |
| cylinders used to transport and store Acetylene? | Contain acetone |
| a welding torch backfire may be caused by? | A loose tip |
| which statement concerning a welding process is true? | The inert-arc welding process uses an inert gas to protect the Weld zone from the atmosphere |
| Where should the flux be applied when oxyacetylene welding aluminum? | Painted on the surface to be welded and applied to the welding rod |
| what purpose does flux serve in welding aluminum? | Minimizes or prevents oxidation |
| why are aluminum plates 1/4 inch or more thick usually preheated before welding? | Reduces internal stresses and assures a more complete penetration |
| How should a welding torch flame be adjusted to Weld stainless steel? | Slightly carburizing |
| Oxides form very rapidly when alloys or metals are hot. It is important, therefore, when welding aluminum to use a? | Flux |
| in gas welding, the amount of heat applied to the material being welded is controlled by the? | Size of the tip opening |
| oxygen in Acetylene cylinders are made of? | Steel |
| when a butt welded joint is visually inspected for penetration,? | The penetration should be 100 percent of the thickness of the base metal |
| Annealing of aluminum? | Remove stresses caused by forming |
| edge notching is generally recommended in butt welding above a certain thickness of aluminum because it? | Aids in getting full penetration of the metal and prevents local distortion |
| If too much Acetylene is used in the welding of stainless steel,? | The metal will absorb carbon and lose its resistance to corrosion |
| the shielding gas is generally used in the gas tungsten arc (GTA) welding of aluminum consists of? | Helium or argon, or a mixture of helium and argon |
| high pressure cylinders used to transport and store acetylene must? | Contain acetone |
Created by:
Lucas1999