Aircraft Drawings Flashcards
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What type of lines are used on aircraft drawings to indicate hidden views, alternate positions, and center lines?
A hidden view line is a medium width line made up of short dashes. It represents an edge that cannot be
seen when looking at the part from a specific position.
Define “tolerance” as used in aircraft drawings.
It is the sum of plus and minus allowance figures when a dimension shows an allowable variation.
Define “clearance” as used in aircraft drawings.
Clearance is the dimensions given for fits between moving parts.
What information is given in the title block of a blueprint?
The drawing number, the name of the part or assembly, the scale, the date, the name of the firm, the name of the draftsman, the checker, and the approving official.
Why are dimensions used, and how are they shown on an aircraft drawing?
Dimensions are solid narrow lines, broken at midpoint for the insertion of measurements. They are used to indicate the size of an object.
How can a change to an aircraft drawing be identified?
They are usually listed in columns, either next to the title block or at one corner of the drawing.
What is a “bill of material” associated with aircraft blueprints?
It is a list of materials and parts necessary for fabrication or assembly of a component or system.
Why are symbols used when drawing aircraft blueprints?
Symbols are a type of shorthand used for drawing. They show the characteristics of a component with a minimum amount of drawing.
How many views are required to determine the shape of an object?
Two views will not always determine the shape of an object. If three views are given, all three must be reviewed.
