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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
Q

What are schematic drawings used for?

A

Used for troubleshooting by showing where objects are located in relation to each other and the direction of fluid flow

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26
Q

What are electronic schematic diagrams for?

A

Show symbols for components found in electrical circuits, showing function and flow rather than placement or scale

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27
Q

What are pictorial diagrams showing?

A

Show pictures circuit components look

28
Q

What are schematic diagram used for?

A

Gives an overview representation of the complete aircraft system, which allow fault diagnosis

29
Q

What are the orthographic projection

A

Front
Rear
Top
Bottom
Left side
Right side

30
Q

What is first angle?

A

European, shows a side of the object that is remote from it in the adjacent view

31
Q

What is third angle?

A

America, shows a side of the object that is nearest to it in the adject view

32
Q

What does an engineers sketch have?

A

Should have a title, the date and the sketchers name

33
Q

What is an isometric drawing?

A

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
Q

What is an oblique drawing?

A

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
Q

What are the angles in perspective drawings?

A

Due to perspective, the actual angles and dimensions are inaccurate

36
Q

When reading a drawing it should be done in this order?

A

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
Q

What are centre lines?

A

Long and short dashes, with the short dashes intersecting. They are unbroken for small circles

38
Q

What are dimensions lines?

A

Broken in the middle to fit measurements at the midpoint

39
Q

What are extension lines?

A

Used to extend the line, being very narrow and a short break where they extend away from the object

40
Q

What are section lines?

A

Indicating surfaces of an object in a sectional view and are generally thin full lines with materials in them

41
Q

What are phantom lines?

A

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
Q

What are break lines?

A

Show portions of the object not shown on the drawing, made by solid freehand lines

43
Q

What are hidden lines?

A

Indicate invisible edges or contours, with short dashes evenly spaced

44
Q

What are outline lines or visible lines?

A

Used for all lines on the drawing representing visible lines on the outside

45
Q

What are stitch lines?

A

Used to indicate stitching or sewing lines. Consisting of very short dashes, about half size of hidden lines

46
Q

What are cutting plane lines?

A

Indicates the plane where a sectional view of the object is taken

47
Q

What shows the maximum degree of roughness acceptability?

A

A single number on the symbol for surface finish in um. 1 um=0.001mm

48
Q

What does a thick lined circle portray?

A

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
Q

What can holes be to accommodate fastener heads for flush fittings?

A

Counterbored
Spot faced
Countersunk

50
Q

When depth is not given, what is necessary to achieve a flat seating?

A

Minimum depth

51
Q

What information does the title block contain?

A

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
Q

How are drawing sizes identified?

A

By letters, with the higher the letter up the alphabet, the larger the size is

53
Q

What are R-size drawing?

A

Larger illustrations made on paper 36 x 42 in

54
Q

Is the copy of a 1:1 drawing the same?

A

No, the copy size may differ slightly

55
Q

Where are revisions recorded?

A

In a block on the upper right hand corner of drawings

56
Q

What are some computer graphics terms?

A

CAD - Computer Aided Design
CADD - Computer Aided Design Drafting
CAM - Computer Aided Manufacturer
CAE - Computer Aided Engineering

57
Q

What are microfilm and microfiche?

A

An analog storage system using film reels which are exposed and develop into photographic records

58
Q

What sizes are microfilm available as?

A

16mm and 35mm

59
Q

What is microfiche’s format?

A

A card with pages laid out in a grip format

60
Q

What is the ATA system breakdown?

A

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
Q

Different types of diagrams?

A

Block diagrams
Simplified schematics
System schematics

62
Q

How are schematic diagrams detailed?

A

ATA chapter sub section, page and drawing number

63
Q

What type of information does schematic diagrams not include?

A

Testing

64
Q

what do wiring diagrams show?

A

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
Q

What wiring diagram does boeing aircraft have?

A

Wiring Diagram Manual (WDM) as a collection of diagrams, drawings and lisst which define the wiring and hook up of associated equipment

66
Q

What do manufacturers use to assist or enable wire trace capability?

A

Uses hot links and continuations

Module 7 (13 decks)

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