ENGINEERING DRAWINGS, DIAGRAMS AND STANDARDS Flashcards
An ______ is a description of an object made up of two or more parts. It describes the object by stating, in a general way, size and shape. Its primary purpose is to show the relationship of the various parts. An ______ is usually more complex than a detail drawing, and is often accompanied by detail drawings of various parts.
ASSEMBLY DRAWING
An _______ is one which includes all necessary information for a part or an assembly in the final installed position in the aircraft. It shows the dimensions necessary for the location of specific parts with relation to the other parts and reference dimensions that are helpful in later work in the shop.
INSTALLATION DRAWING
A __________ is obtained by cutting away part of an object to show the shape and construction at the cutting plane. The part or parts cut away are shown by the use of (crosshatching) lines.
SECTIONAL VIEW DRAWINGS
A ______ view is used when the interior construction or hidden features of an object cannot be shown clearly by exterior views. For example, the top figure, a sectional view of a coaxial cable connector, shows the internal construction of the connector
FULL SECTION
A _______ drawn directly on the exterior view shows the shape of the cross section of a part, such as the spoke of a wheel.
REVOLVED SECTION
A _____ illustrates particular parts of an object. It is drawn like revolved sections, except it is placed at one side and, to bring out pertinent details, often drawn to a larger scale than the view on which it is indicated.
REMOVED SECTION
The _______ consists of a drawing number and certain other data concerning the drawing and the object it represents. This information is grouped in a prominent place on the print, usually in the lower right-hand corner. Sometimes the _____ is in the form of a strip extending almost the entire distance across the bottom of the sheet.
title block
A list of the materials and parts necessary for the fabrication or assembly of a component or system is often included on the drawing. The list is usually in ruled columns in which are listed the part number, name of the part, material from which the part is to be constructed, the quantity required, and the source of the part or material.
BILL OF MATERIAL
_________ on drawings are similar to the numbers and letters printed on the borders of a map. They help locate a particular point. To find a point, mentally draw horizontal and vertical lines from the letters and numerals specified; the point where these lines intersect is the area sought.
Zone numbers
Parts numbered in the title block can be located on the drawing by finding the numbers in squares along the lower border. Zone numbers read from ________.
right to left
Fuselage station _____ indicates a location that is _____ inches from the datum of the aircraft.
185
The sum of the plus and minus allowance figures is called __________.
tolerance
In __________, there are six possible views of an object, because all objects have six sides—front, top, bottom, rear, right side, and left side
orthographic projection
A _________ uses standardized symbols to indicate specific types of logic gates and their relationship to other digital devices in a system.
logic flowchart
______ are made up of alternate long and short dashes.
Centerlines
_______ are used to extend the line showing the side or edge of a figure for the purpose of placing a dimension to that side or edge.
EXTENSION LINES
__________ indicate the exposed surfaces of an object in sectional view
Sectioning lines
_________, composed of one long and two short evenly spaced dashes, indicate the alternate position of parts of the object or the relative position of a missing part.
PHANTOM LINES
______ indicate that a portion of the object is not shown on the drawing.
Break lines
Short breaks are made by _________.
solid, freehand lines
For long breaks, ________ are used
solid ruled lines with zigzags
________ are solid lines with one arrowhead and indicate a part or portion to which a note, number, or other reference applies.
Leader lines
________ indicate invisible edges or contours.
________ consist of short dashes evenly spaced and are frequently referred to as dash lines.
Hidden lines
A ______ is a light solid line, broken at the midpoint for insertion of measurement indications, and having opposite pointing arrowheads at each end to show origin and termination of a measurement. They are generally parallel to the line for which the dimension is given, and are usually placed outside the outline of the object and between views if more than one view is shown.
dimension line
_____ indicate stitching or sewing lines and consist of a series of evenly spaced dashes.
Stitch lines
The _______ is used for all lines on the drawing representing visible lines on the object.
outline or visible line
The _______ is one of the world’s largest developers of global standards. It is an institution comprised of the national standards organizations from ____ member countries around the world
International Organization for Standardization (ISO)
156
In a ________, the cutting plane extends only halfway across the object, leaving the other half of the object as an exterior view. ______ are used to advantage with symmetrical objects to show both the interior and exterior.
half section
________ are frequently used for the detection of faulty components. They often consist of a series of yes or no questions. If the answer to a question is yes, one course of action is followed. If the answer is no, a different course of action is followed.
Troubleshooting flowcharts
__________ are used to illustrate a particular sequence, or flow of events
Flowcharts
