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13 Cards in this Set
- Front
- Back
How many views are required to represent the important details of most aircraft parts?
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ONE, TWO, OR THREE views are usually enough
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What kind of parts can be represented by one view drawings?
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Parts with uniform thickness such as Shims, Plates and Gaskets.
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What is the name for a part of a drawing used to bring out important details and how is it drawn?
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Detailed view. Usually drawn to a larger scale than the main drawing.
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What is the purpose of an Orthographic projection.
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It is a way of drawing an object using different views at right angles to each other, such as top, front, and side view.
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What is the purpose of Schematic diagrams?
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They are primarily used for troubleshooting systems
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Why do manufacturers use symbols on aircraft drawings?
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Symbols are a form of shorthand and are used to convey the characteristics of a component with a minimum of drawing.
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Describe the appearance of lines used to show hidden views, alternate positions and the middle of symmetrical objects, and give their proper name.
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Hidden views are shown with HIDDEN LINES, which are short evenly spaced dashes. Alternate positions are shown with PHANTOM LINES made up of light, alternating long dashes and 2 short dashes. CENTER LINES consist of alternating long and short dashes and show the middle of symmetrical objects.
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How can you determine if a drawing has been changed?
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A record of changes is listed either in a revision block or in ruled columns, which may be in a corner of the drawing or next to the title block.
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How are dimensions shown on aircraft drawings and what is their purpose?
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DIMENSION LINES are usually solid and generally broken at the midpoint for insertion of the measure. They provide a means to accurately represent the size of an object.
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What is the difference between an allowance and a tolerance?
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ALLOWANCE is the difference between the nominal dimension and the max/min permissable sizes. TOLERANCE is the difference between the extreme permissable dimensions which may be found by adding the plus and minus allowances.
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What is meant by clearance when used on aircraft drawings.
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An allowable dimension between 2 parts.
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What kinds of information about an aircraft drawing can be found in the title block?
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The part or assembly NAME, drawing SIZE, SCALE, DATE, Company Name, Name or initials of the person responsible for creating or approving the drawing
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What information is contained in a bill of materials?
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A list of the materials and parts needed to fabricate or assemble the component or system shown in the drawing.
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