Aircraft Drawings Flashcards
What type of lines are used on aircraft drawings to indicate hidden views, center lines, alternate position lines?.
A hidden line is medium with line made up of short dashes. It represents an edge that cannot be seen when looking at the part from a specific angle
Center lines are thin lines composed of alternating long and short dashes, used to indicate the center of an object or a hole
Alternate position lines are medium with lines composed of one long and two short evenly space dashes, used to show alternate position of a part or relative position of missing part
how are dimension line shown on aircraft drawings?
Solid lines usually broken at midpoint for insertion of measurement indication
what is a sketch for a repair?
Basic drawing that shows specific information and provides minimum detail needed to manufacture a part
how may an aircraft drawing of a part be drawn to bring out pertinent details?
By drawing a detailed view at larger scale than principal view
what type of drawing is most helpful and troubleshooting a system?
Schematics
Define “tolerance” as used in aircraft drawings.
The difference between + & - allowable dimensions
define “clearance” as used in aircraft drawings.
The dimension given for a space between parts
what is a fuselage station number?
Distance from the data measured in inches along the longitudinal axis
What information is given in the title block of a blueprint?
Drawing number,
the name of the park assembly,
the scale, the date, the name of the firm,
the name of the draftsman,
the checker, and the approving official.
Where is the title block usually found on an aircraft drawing?
The lower right corner
Why are dimensions used, and how are they shown on aircraft drawings?
Are used to indicate the size of a part and are solid with narrow lines broken at midpoint or measurements
how can a change to an aircraft drawing be identified?
By its revision letter (a,b,c)
What is the “bill of materials” associated with aircraft blueprint?
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 express the characteristics of a component with a minimum amount of drawing or writing (shorthand abreviations)
What is an orthographic projection?
A way of illustrating an object in a drawing , by showing different views at right angles to each other , such as front and side views.
