Flashcards in Aircraft Drawings Deck (27)
What information is given in the title block of a drawing?
Name and address of the company who made the part, the name of the part, the scale of the drawing, the name of the draftsmen, the name of the engineer approving the part, and the number of the part (the drawing number).
What line is used to indicate an alternate position?
The phantom line, one long and two short dashes.
What line is used to illustrate hidden views?
The hidden line, short dashes with even spaces.
What line is used to illustrate centers of objects?
The center line, long and short dashes.
What line is used to size objects?
The dimension line, solid line broken at center point for dimensions.
How are changes made to a drawing indicated?
Revisions on columns near title block.
What is meant by tolerance on an aircraft drawing?
The allowable plus or minus variation from the dimension given on the drawing.
What is meant by clearance on an aircraft drawing?
The amount of space, or separation, that is allowed between two components or parts.
What is a BOM?
Bill of Materials, a list of materials and parts necessary for the fabrication or assembly of a component.
Why are symbols used on drawings?
Serves as short hand, to reduce the complexity of the drawing.
How many views are used to show most objects in an aircraft drawing?
What is a detail drawing?
A drawing that includes all the information needed to fabricate the part.
What is the purpose for one view drawings?
To show objects of uniform thickness.
What type of drawing is most helpful in troubleshooting a system?
A schematic diagram.
What is an orthographic drawing?
A drawing showing different views of a part at right angles.
How can you know that the aircraft drawing you are using is the most current version of the drawing?
By the number in the revision block and by the log of the most recent drawings.
How many views can there be in an orthographic projection?
What is a fuselage station number?
The distance in inches from the datum, measured along the longitudinal axis of the fuselage.
Where is the title block normally located on an aircraft drawing?
In the lower right-hand corner of the drawing.
What is an assembly drawing?
A drawing that shows all the components of a part in an exploded form, depicting relationship between parts. A parts list is included with an assembly drawing.
What is an installation drawing?
A drawing that shows the location of the parts and assemblies on the complete aircraft.
What is a block diagram?
A drawing that shows the various functions of a system by a series of blocks. These blocks do not include any detail, but instead indicate what happens in each block.
What is a butt line?
A reference line to the right or left of the center line of the aircraft.
How are dimensions shown on an aircraft drawing?
By numbers shown in the break of a dimension line.
What is the purpose of a sketch of a repair?
It shows a specific bit of information and includes the minimum amount of detail needed to manufacture the part.
What are the four steps in making a sketch?
Block in the space and basic shape used for the sketch.
Add details to the basic block.
Darken lines that are to show up as visible lines in the finished sketch.
Add dimensions and any other information that will make the sketch more usable.