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17 Cards in this Set
- Front
- Back
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What type of lines are used on aircraft drawings to indicate hidden views, centerlines, and alternate position lines? |
A hidden view is made up of medium width short dashes representing an edge that cannot be seen. A center line is made up of thin lines composed of long and short dashes and are used to indicate the center or void of an object. A alternate position lines are medium width lines composed of one long and two short evenly spaced dashes showing the alternate position of a part. |
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How are dimension lines shown on aircraft drawings? |
Dimension lines are solid and usually broken at midpoint for insertion of measurement indications I------27"------I |
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What is a sketch repair? |
A basic drawing showing specific information and provides minimum detail needed to manufacture a part. |
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How may an aircraft drawing of a part be drawn to bring out pertinent details? |
By drawing a detail view at a larger scale. |
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What type of drawing is most helpful in troubleshooting a system? |
A schematic. |
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Define "Tolerance" as used in aircraft drawings. |
The difference between the plus and minus allowable dimension of a part. (+/- of .005= .010) |
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Define "clearance" as used in aircraft drawings. |
Clearance is the dimension given for the space between parts |
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What is a fuselage station number? |
It is the distance from the datum measured in inches along the longitudinal axis. |
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What information is given in the title block of a blueprint? |
The drawing #, name of the part or assembly, the scale, date, name of the firm, name of the draftsman, the checker and the approving official. |
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Where is the title block found on an aircraft drawing? |
In the lower right corner. |
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Why are dimensions used and how are they shown on the aircraft drawings? |
Dimensions are solid narrow lines, broken at midpoint for insertion of measurements. They are used to indicate the size of an object. |
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How can a change to an aircraft drawing be identified? |
By its Revision |
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What is the "bill of materials" associated with aircraft blueprint? |
A list of materials and parts needed for fabrication or assembly of a component or system. |
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Why are symbols used when drawing aircraft blueprints? |
They show characteristics of a component with a minimum amount of drawing. |
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What is an orthographic projection? |
An object illustration showing views at right angles front and side views |
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How many views are required to determine the shape of an object? |
3 views Front, Top and Right side |
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What is the purpose of one view drawings? |
They are used for objects of uniform thickness, such as gaskets, shims and plates |
