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General
Aircraft Drawings
| Question | Answer |
|---|---|
| What type of lines are used on aircraft drawings to indicate hidden views, center lines, and alternate position Hnes? | A hidden view line represents and edge that cannot be seen when looking at the part from a specific position. Center lines are used to indicate the center of an object or center of a void. Alternate position lines show alternate position of a part. |
| How are dimension lines shown on aircraft drawings? | Dimension lines are solid, and usually broken at midpoint for insertion of measurement indications. |
| What is a sketch for a repair? | It is a 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 a larger scale than the principal view. |
| What type of drawing is most helpful in troubleshooting a system? | A schematic. |
| Define "tolerance" as used in aircraft drawings. | The difference between the plus and minus allowable dimension of a part. (i of .005 = .010) |
| Define "clearance" as used in aircraft drawings | Clearance is the dimension given for the space between parts |
| . What is a fuselage station number? | It is the distance from the datum measured in inches along the longitudinal axis. |
| What information is given in the title block of a blueprint? | The drawing number, the name of the part or 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? | In the lower right corner. |
| Why are dimensions used, and how are they shown on the aircraft drawings? | Dimensions are solid narrow lines, broken at midpoint for the insertion of measurements. They are used to indicate the size of an object. |
| How can a change to an aircraft drawing be identified? | By its revision letter (A, B, C, etc.) The revision letters are usually listed in a table next to the title block or in the corner of the drawing. |
| What is the "bill of materials" associated with aircraft blueprints? | It is a list of materials and parts necessary for fabrication or assembly of a component or system |
| Why are symbols used by manufacturers when drawing aircraft blueprints? | Symbols are a type of shorthand used in drawings. They express the characteristics of a component with a minimum amount of drawing or writing. |
| 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. |
| How many views are required to determine the shape of an object | Three views: Front, Right and Top |
| What is the purpose of one view drawings? | They are used for objects of uniform thickness, such as gaskets, shims, and plates. |
Created by:
llanesjc29