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9 Cards in this Set
- Front
- Back
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what type of lines are used on aircraft drawings to indicate hidden views, center lines, and alternate position lines
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center lines- thin lines composed of alternating long and short dashes. (used to indicate the center of an object or void) alternate position lines- medium width lines composed if one lining and two short evenly spaced dashes. (used to show the alternate position of a part or the relative position of a missing part.) |
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define tolerance as used in aircraft drawings
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the difference between the plus and minus allowable dimensions of a part. (+ & - of .005=.010) |
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define clearance as used in aircraft drawings
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clearance is the dimensions given for the space between parts
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what info is given in the title block of a blue print |
drawing number name of part or assembly scale date name of the firm name of the draftsman name of the checker name of the approving official |
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why are dimensions used and how are they shown on the aircraft drawings
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dimensions are the solid narrow lines, broken at midpoint for the insertion of measurements. (used to indicate the size of an object) |
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how can a change to an aircraft drawing be identified |
by its version letter. (A,B,C, etc.) the revision letters are usually listed in the table next to the title block or in the corner of the drawing. |
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why is the "bill of materials" associated with aircraft blueprints
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it is a list of parts and materials necessary for fabrication or assembly of a component or system |
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why are symbols used when drawing aircraft blue prints |
symbols are a type of shorthand used in aircraft drawing. they express the characteristics of a component with minimum amount of drawing or writing. |
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how many views are required to determine the shape of an object
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3 views top front right side |
