Aircraft Drawing Flashcards
When reading a blueprint, a dimension is given as 4.387 inches to +0.005 -0.002. Which statement is true?
The minimum acceptable size is 4.385 inches.
(Refer to Figure 24.) Using the information, what size drill would be required to drill the clevis bolthole?
5/16 inch
1) A detail drawing is a description of a single part.
2) An assembly drawing is a description of an object made up of two or more parts. Regarding the above statements,
Both no.1 and no.2 are true
(Refer to Figure 36.) The diameter of the holes in the finished object is
1/2 inch
(Refer to Figure 38.) An aircraft reciprocating engine as a 1,850 cubic-inch displacement and develops 1,250 brake-horsepower at 2,500 RPM. What is the brake mean effective pressure?
217
Refer to Figure 41.) Determine the fuel consumption with the engine operating at cruise, 2,350 RPM
55.3 pounds per hour
What is used to indicate that a surface must be machine finished?
Finished marks
(Refer to Figure 39.) Determine the minimum wire size of a single cable in a bundle carrying a continuous current of 20 amperes 10 feet from the bus to the equipment in a 28-volt system with an allowable 1-volt drop
No.12
What is the allowable manufacturing tolerance for the bushing where the outside dimensions shown on the blueprints are: 1.0625 +.0025 -.0003?
-.0028
1) According to 14 CFR part 91, repairs to an aircraft skin should have a detailed dimensional sketch included in the permanent records.
2) On occasion, a mechanic may need to make a simple sketch of a proposed repair to an aircraft, a new design, or a modification.
Regarding the above statements,
Only no.2 is true
(Refer to Figure 35.) Identify the extension line
3
A line used to show an edge which is no visible is a
Hidden line
A drawing in which the subassemblies or parts are shown as brought together on the aircraft is called
An installation drawing
Which of the following terms is/are used to indicate specific measured distances fro the datum and/or other points identified by the manufacturer, to points in or on the aircraft?
1) Zone numbers
2) Reference numbers
3) Station numbers
3
A specific measured distance from the datum or some other point identified by the manufacturer to a point in or on the aircraft is called a
Station number
1) A measurement should not be scaled from an aircraft print because the paper shrinks or stretches when the print is made.
2) When a detail drawing is made, it is carefully and accurately drawn to scale, and is dimensioned.
Regarding the above statements,
Both no.1 and no.2 are true.
In a sectional view drawing, what sections illustrate particular parts of an object?
Removed
(Refer to Figure 37.) The vertical distance between the top of the plate and the bottom of the lowest 15/64-inch hole is
2.367
In the reading of aircraft blueprints, the term ‘tolerance’, used in association with aircraft parts or components,
Is the difference between extreme permissible dimensions that a part may have and still be acceptable
(Refer to Figure 30.) Identify the bottom view of the object
1
(Refer to Figure 33.) Which material section-line symbol indicates cast iron?
3
(Refer to Figure 31.) What are the proper procedural steps for sketching repairs and alterations?
3,1,4,2
(Refer to Figure 29.) Identify the left side view of the object shown.
3
For sketching purposes, almost all objects are composed of one or some combination of six basic shapes; these include the
Triangle, circle, cube, cylinder, cone, and sphere
(Refer to Figure 39.) Determine the maximum length of a no.16 cable to be installed from a bus to the equipment in a 28-volt system with a 25-ampere intermittent load and a 1-volt drop.
8 feet
A hydraulic system schematic drawing typically indicates the
Direction of fluid flow through the system
(Refer to Figure 34.) What is the dimension of the chamfer
0.0625 x 45 degrees
(Refer to Figure 32.) What is the next step required for a working sketch of the illustration?
Sketch extension and dimension lines
1) Skeletons are usually made with the aid of drafting instruments.
2) Sketches are usually more complicated to make when using graph paper.
Regarding the above statements,
Neither no.1 nor no.2 is true
one purpose for schematic diagrams is to show the
Functional location of components within a system
What material symbol is frequently used in drawings to represent all metals?
Cast iron
What should be first step of the procedure in sketching an aircraft wing skin repair?
Block in the views
(Refer to Figure 27.) In the isometric view of a typical aileron balance weight, identify the view indicated by the arrow
3
(Refer to Figure 39.) Determine the maximum length of a no.12 single cable that can be used between a 28-volt bus and a component utilizing 20 amperes continuous load in free air with a maximum acceptable 1-volt drop
26.5 feet
(Refer to Figure 39.) Determine the cable size of a 40 foot length of single cable in free air, with a continuous rating, running from a bus to the equipment in a 28-volt system with a 15-ampere load and a 1-volt drop
No.10
Sketches are usually made easier by the use of
Graph paper
(Refer to Figure 34.) What would be the minimum diameter of 4130 round stock required for the consideration of the clevis that would produce a machined surface?
1 inch
(Refer to Figure 34.) What is the maximum diameter of the hole for the clevis pin?
0.3175
(Refer to Figure 38.) An aircraft reciprocating engine has a 2.800 cubic-inch displacement and develops 2,000 brake horsepower at 2,200 RPM, what is the brake mean effective pressure?
257.5
The drawings often used in illustrated parts manuals are
Exploded view drawings
What type of diagram shows the wire size required for a particular installation?
A wiring diagram
In what type of electrical diagram are images of components used instead of conventional electrical symbols?
A pictorial diagram
What type of drawing line consists of alternating long and short lines
Center
The measurements showing the ideal or ‘perfect’ sizes of parts on drawings are called
Dimensions
Zone numbers on aircraft blueprints are used to
Locate parts, sections, and views on large drawings
What type of line is normally used in a mechanical drawing or blueprint that indicates invisible edges or contours?
Medium weight short dashes, evenly spaced
In order to locate wing and stabilizer frames, what numbering system is used?
Station numbers
A simple way to find the center of a circle on a sketch or drawing, or a circular piece of material is used to
Draw two non-parallel chord lines across the circle and then corresponding perpendicular bisector lines across each chord line
Working drawings may be divided into three classes. They are:
Detail drawings, assembly drawings, and installation drawings
Which statement is true regarding an orthographic projection?
One-view, two-view, and three-view drawings are the most common
1) schematic diagrams indicate the location fo individual components in the aircraft.
2) Schematic diagrams indicate the location of components with respect to each other within the system.
Regarding the above statements,
Only no.2 is true
(Refer to Figure 41.) Determine how much fuel would be required for a 30-minute reserve operating at 2,300 RPM
25.3 pounds
Schematic diagrams are best suited for which of the following?
Troubleshooting and system malfunctions
What is the class of working drawing that is the description/depiction of a single part?
Detail drawing
Which statement is applicable when using a sketch for making a part
The sketch must show all information to manufacture the part.
(Refer to Figure 40.) Determine the proper tension for a 3/16 inch cable (7x19 extra flex) if the temperature is 87F
125 pounds
(Refer to Figure 38.) An aircraft reciprocating engine has a 2,800 cubic inch displacement, develops 2,000 brake-horsepower, and indicates 270 brake mean effective pressure. What is the engine speed (RPM)?
2,100
(Refer to Figure 28.) Identify the bottom view of the object shown.
2
(Refer to Figure 40.) Determine the proper tension for a 1/8 inch cable (7x19) if the temperature is 80F
70 pounds
