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Arts and Humanities
ORAL General Aircraft Drawings
Terms in this set (13)
What are schematic diagrams generally used for?
Mainly used for trouble-shooting.
How many views may be required to determine the shape of an object when reading an aircraft drawing?
One-, two-, and three-view drawings are most commonly used.
What are one-view drawings used for?
Used for objects of uniform thickness, such as gaskets, shims, and plates.
What kind of information is contained in the title block of a blueprint?
A drawing number, name of the part or assembly, scale, date, name of the firm, name or initials of the draftsman, checker, and approving official.
What is a "bill of material" associated with aircraft blueprints?
A list of materials and parts necessary for the fabrication or assembly of a component or system.
Define "clearance" as used on aircraft blueprints.
A dimension allowable between parts.
Why are dimensions used and how are they shown on aircraft drawings?
Dimensions are used to determine the size of an object. Dimension lines are solid, usually broken at midpoint for insertion of measurement indications.
Define "tolerance" as used on aircraft blueprints.
Tolerance is the sum of the plus and minus allowance figures.
What types of lines are used on mechanical drawings to show alternate position? Hidden views? Center lines?
Phantom lines show alternate position: one long and two short. Hidden lines are short dashes evenly spaced. Center lines are alternate long and short dashes.
Where and how are aircraft drawing changes identified?
Changes are usually listed as revisions in ruled columns, either adjacent to the title block or at one corner of the drawing.
Why are symbols used when drawing aircraft blueprints?
Symbols are the shorthand of drawing and portray the characteristics of a component with a minimum amount of drawing.
How may an aircraft drawing of a part be drawn to bring out pertinent details?
By drawing a detailed view at a larger scale than the principle view.
What is an orthographic projection?
It is a way of illustrating an object in a drawing showing different views at right angles to each other, such as a front and right side view.
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