Aircraft Drawings Flashcards
How may you bring out important details of a part in aircraft drawing?
A detail view draw to a larger scale.
Describe information found in the title block of blue print:
Drawing size, Part or assembly name, Scale, Date, Title Block, Drafsman, Film, Checker, Approving Official.
Describe bill of materials:
A list of materials and parts necessary to fabricate or assemble a component or system.
What is the difference between an ALLOWANCE and a TOLERANCE used on aircraft blueprints?
Allowance - Is the diference between the nominal dimension and the maximum and minimum permissible sizes.
Tolerance - The sum of the (+) and (-) alowance figures.
Define clearance as used on aircraft blueprints.
Clearance is a dimension allowable between parts.
What is an orthografic projection?
It is a way of drawing an object using different views such as (top, front and side view).
What might one-view drawings represent in aircraft blueprints?
Objects of uniform thickness, gaskets, shims and plates.
One, two and three view drawings are commonly used for:
Showing a shape of an object.
What type of diagram would a mechanic use for troubleshooting?
Schematic diagrams.
How are dimension lines show on aircraft drawings?
Solid lines broken at midpoint for the insertion of measurements.
Where is the revision block normally located?
Adjacent to the title block or at top RH corner.
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 columms which may be in a corner of the drawing or next to the title block.
Describe a Center Line:
Alternate long and short dashes.
Describe a Phantom Line:
One long and two short, also show alternate positions.
Describe a Hidden Line:
Short dashes evenly spaced.
