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Module 7 > 7.5: Engineering Drawings and Standards > Flashcards

7.5: Engineering Drawings and Standards Flashcards

1
Q

What are three types of working drawings?

A

Detailed drawings
Assembly drawings
Installation drawings

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2
Q

What are detailed drawing also called?

A

FAB for fabrication drawings

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3
Q

What do detailed drawings not include?

A

Location
Position
Fastening method

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4
Q

What do detailed drawings include?

A

Size and shape
Materials and heat treatments
Protective finish instruction
Machine finish if required
Part numbering and marking instruction

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5
Q

How may separate detailed drawings are for parts?

A

Can be included in one drawing or in assembly or installation drawings

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6
Q

What is an assembly?

A

A multiple piece item that can be disassembled into its components or units without being destroyed

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7
Q

What are assembly drawings?

A

Depict the relationship between two or more parts

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8
Q

Where are the assembly drawing details?

A

On the lower right hand corner of the drawing

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9
Q

Are materials specified by assembly drawings?

A

No

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10
Q

What are installation drawings?

A

Brings all the sub assemblies together and describe where exactly certain parts or assemblies are to be permanently fixed on the aircraft

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11
Q

What parts are dimensions given to on installation drawings?

A

Only given for those adjustments necessary for a part to function

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12
Q

What lines are used to show parts of an aircraft that are not involved in the installation?

A

Using phantom lines

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13
Q

What are parts only used as a reference have on them?

A

Their part name and “Ref” beside it

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14
Q

What do installations show?

A

Gives locations of parts within the aircraft structure

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15
Q

What is a sectional drawing?

A

Used to show a part’s internal construction or shape

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16
Q

What are four types of sectional drawings?

A

Revolved section drawings
Removed section drawings
Complete section drawings
Half section drawings

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17
Q

What is a revolved section drawing?

A

Shows a cutting plane perpendicular through the feature and then rotated 90 degrees, with measurements projected from the adjacent view. it is used when only the shape of the part needs to be shown

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18
Q

What is a removed section drawing?

A

Shows simple objects internally and is used when a drawing becomes cluttered or not enough room

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19
Q

What is a complete sectional drawing?

A

Used for complex assemblies using section lines and details of individual parts

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20
Q

What is a half sectional drawing?

A

Can be used to view both the outside and inside of a part, with the upper half showing the assemblies internal construction and the lower half showing the entire assembly as it appears from the outside

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21
Q

What are block diagrams?

A

Used as an aid for troubleshooting complex electrical and electronic systems, by having blocks that represent several components that are replaceable components

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22
Q

What are two types of flowcharts?

A

Troubleshooting flowcharts
Logic flowcharts

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23
Q

What are troubleshooting flowcharts?

A

A series of yes and no questions that can be used for troubleshooting

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24
Q

What are logic flowcharts?

A

Used for analysing digitally controlled components and system, and use standardised symbols

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25
What are schematic drawings used for?
Used for troubleshooting by showing where objects are located in relation to each other and the direction of fluid flow
26
What are electronic schematic diagrams for?
Show symbols for components found in electrical circuits, showing function and flow rather than placement or scale
27
What are pictorial diagrams showing?
Show pictures circuit components look
28
What are schematic diagram used for?
Gives an overview representation of the complete aircraft system, which allow fault diagnosis
29
What are the orthographic projection
Front Rear Top Bottom Left side Right side
30
What is first angle?
European, shows a side of the object that is remote from it in the adjacent view
31
What is third angle?
America, shows a side of the object that is nearest to it in the adject view
32
What does an engineers sketch have?
Should have a title, the date and the sketchers name
33
What is an isometric drawing?
Constructed so that all edges form the same edges form the same angle of 30 degrees to the drawing plane, with all distances are the same length as the actual side
34
What is an oblique drawing?
An isometric drawing with one object face parallel to the drawing plane and two axis perpendicular to each other. This depth axis is typically 45 degrees
35
What are the angles in perspective drawings?
Due to perspective, the actual angles and dimensions are inaccurate
36
When reading a drawing it should be done in this order?
Read the drawing number and description of the article Check the model affected The latest change letter The next assembly listed Read illustrations Determine shape through carefully inspecting views Determine dimension
37
What are centre lines?
Long and short dashes, with the short dashes intersecting. They are unbroken for small circles
38
What are dimensions lines?
Broken in the middle to fit measurements at the midpoint
39
What are extension lines?
Used to extend the line, being very narrow and a short break where they extend away from the object
40
What are section lines?
Indicating surfaces of an object in a sectional view and are generally thin full lines with materials in them
41
What are phantom lines?
Indicates the alternate position of parts of the object or the relative position of missing part, composed of one long and two short lines
42
What are break lines?
Show portions of the object not shown on the drawing, made by solid freehand lines
43
What are hidden lines?
Indicate invisible edges or contours, with short dashes evenly spaced
44
What are outline lines or visible lines?
Used for all lines on the drawing representing visible lines on the outside
45
What are stitch lines?
Used to indicate stitching or sewing lines. Consisting of very short dashes, about half size of hidden lines
46
What are cutting plane lines?
Indicates the plane where a sectional view of the object is taken
47
What shows the maximum degree of roughness acceptability?
A single number on the symbol for surface finish in um. 1 um=0.001mm
48
What does a thick lined circle portray?
Drilled holes, and their diameter may be shown by a note. If the hole is blind, the note includes depth. Reamed holes symbols include a note. Threaded holes have thick circular lines for the thread crest and a thin, broken one for the root
49
What can holes be to accommodate fastener heads for flush fittings?
Counterbored Spot faced Countersunk
50
When depth is not given, what is necessary to achieve a flat seating?
Minimum depth
51
What information does the title block contain?
Drawing number Name of the part or assembly Scale The date Name of the firm Name of the drafter, the checker and person approving the drawing
52
How are drawing sizes identified?
By letters, with the higher the letter up the alphabet, the larger the size is
53
What are R-size drawing?
Larger illustrations made on paper 36 x 42 in
54
Is the copy of a 1:1 drawing the same?
No, the copy size may differ slightly
55
Where are revisions recorded?
In a block on the upper right hand corner of drawings
56
What are some computer graphics terms?
CAD - Computer Aided Design CADD - Computer Aided Design Drafting CAM - Computer Aided Manufacturer CAE - Computer Aided Engineering
57
What are microfilm and microfiche?
An analog storage system using film reels which are exposed and develop into photographic records
58
What sizes are microfilm available as?
16mm and 35mm
59
What is microfiche's format?
A card with pages laid out in a grip format
60
What is the ATA system breakdown?
First two numbers are system/chapter identification Third number gives the section Fourth number gives the sub section Fifth and sixth number represent the subject
61
Different types of diagrams?
Block diagrams Simplified schematics System schematics
62
How are schematic diagrams detailed?
ATA chapter sub section, page and drawing number
63
What type of information does schematic diagrams not include?
Testing
64
what do wiring diagrams show?
The detailed wiring of the system and show the size of wire and type of terminals to be used for a particular application. They show where they connect within the system and provide additional information through ATA chapters, part numbers and serial numbers
65
What wiring diagram does boeing aircraft have?
Wiring Diagram Manual (WDM) as a collection of diagrams, drawings and lisst which define the wiring and hook up of associated equipment
66
What do manufacturers use to assist or enable wire trace capability?
Uses hot links and continuations

Module 7 (13 decks)

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