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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 ? |
One, two or three views are usually enough. |
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What kinds of parts can be represented by one-view drawings ? |
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 ? |
A detailed view, which is usually drawn to a larger scale than the main drawing. |
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What is the purpose of schematic diagrams ? |
They are primarily used for troubleshooting systems. |
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Describe an orthographic projection. |
It is a way of drawing an object using different views at right angles to each other, such as a top, front, and side view. |
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Why do manufacturers use symbols on aircraft drawings ? |
Symbols are a form of short hand and are used to convey the characteristics of a conponent 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. |
Hidden views are shown with hidden lines, which are short, evenly spaced dashes. Center lines, consisting of alternating long and short dashes, show the middle of symmetrical objects. |
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How can you determine if a drawing has been changed ? |
A record of the 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 ? |
>Dimension lines are usually solid and generally broken at the midpoint for insertion of the measurement . >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" ? |
>An allowance is the difference between the nominal dimension and the maximum and minimum permissible sizes. >The tolerance is the difference between the extreme permissible dimensions, which may be found by adding the plus and minus allowances. |
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What is meant by "clearence" when used on aircraft drawings ? |
An allowable dimension between two parts. |
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What kinds of information about an aircraft drawing can be found in the title block ? |
The part or assembly name, drawing size, scale, date, company name, name or initials of the people responsible for creating or approving the drawing. |
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What information is contained in a " bill of materials" |
A list of the materials and parts needed to fabricate or assemble the component or system shown in the drawing. |