Aircraft Drawings Flashcards
Oral questions
How many views are required to represent the important details of most aircraft parts
one, two or three views are usually enough
what kinds of parts can be represented by one view drawings
Parts with uniform thickness such as shims, plates and gaskets
what is the name for a part of a drawing used to bring out important details and how is it drawn
A detailed view which is usually drawn to a larger scale than the main drawing
What is the purpose of schematic diagrams
They are primarily used for troubleshooting system
Describe an orthographic projection
It is a way of drawing an object using different views at right angles to each other such as a top, front, and side view .
Why do manufactures use symbols on aircraft drawing
Symbols are form of shorthand and are used to convey the characteristics of a component with a minimum of drawing
describe the appearance of lines used to show hidden views, alternate positions and the middle of symmetrical objects
Hidden views are shown with hidden lines, which are short, evenly spaced dashes.alternate positions are shown with phantom lines made up of light alternating long dashes-and two short dashes, show the middle of symmetrical objects
How can you determine if a drawing has been changed
A record of the changes is listed either in a revision block or in rued columns, which may be in a corner of the drawing or next to the title block
how are dimensions shown on aircraft drawings and what is their purpose
Dimension lines are usually solid and generally broken at the mid point for insertion of the measurement . They provided a means to accurately represent the size of an object
Whats the difference between an allowance and a tolerance
An allowance is the difference between the nominal dimension and the maximum and minimum permissible sizes. The tolerance is the difference between the extreme permissible dimensions, which may be found by adding the plus and the minus allowances
What is meant by clearance when used on aircraft drawing
An allowable dimension between two parts
What kinds of information about an aircraft drawing can be found in the title block
the part or assembly name, drawing size, scale, date, company name, name or initials of the people responsible for creating or approving the drawing.
What information is contained in a bill of materials
A list of the material and parts needed to fabricate or assemble the component or system shown in the drawing.
