FAA Aviation Mechanic General (AMG)Aircraft Drawings, Weight and BalanceEasy
A drafter needs to depict a bracket so that a technician can clearly see its true length, width, and height without distortion. Which drawing technique is used to show the front, top, and side of the part as separate, related views?
- AIsometric projection
- BOrthographic projection
- CExploded view
- DPerspective drawing
Show answer & explanationAnswer & explanation
Correct answer: B. Orthographic projection
Orthographic projection shows an object as a series of separate two-dimensional views (front, top, side) that together represent the true dimensions without distortion. Isometric and perspective drawings show the object as a 3-D image and are used for illustration, not precise dimensioning.
Why the other options are wrong
- A. Isometric shows a 3-D pictorial view, not separate true-shape views.
- C. Exploded views separate assembled parts to show relationships, not true shape.
- D. Perspective drawings show depth realistically but distort true dimensions.
Orthographic Projection
A drafting method that shows an object in two or more separate views (front, top, side), each true to scale, to fully describe its shape and dimensions.
- Standard views: front, top, side (right side)
- Each view shows true shape/size with no distortion
- Used for detailed manufacturing drawings
Memory trick: 'Ortho' = straight-on, three honest views tell the whole truth