Lesson 10

In this lesson you will use these CAD commands:

Copy	Move
Line	Arc (Sp, Ep, Mid)
Rectangle	Poly Line
Mirror X	Delete
Mirror Y	Scale
Circle	Rotate

This lesson is an orthographic drawing. Orthographic projection is a way to completely define a three-dimensional object with two-dimensional drawings. Imagine you were photographing a 3D object. You could position the camera directly in front of the object and snap a front view. You could then position the camera directly above the object to get a top or plan view. Moving around to the right, you could take a right view shot of the object, etc. In each case, you would position the camera to be at eye level with the object. In other words, the camera lens and the object side that you are photographing should be parallel. These snapshots would correspond to orthographic projections of the object.

Click here for a visual example:
In our drawing, we will do a top or plan view, a side view, and a front view. For the top view, also called the plan, we will only draw the right side of the Shuttle, then we will use the Mirror X command to make a perfectly symmetrical Shuttle.

Click here if you would like to see the original NASA drawing of the Space Shuttle Orbiter that was the basis for this project.

Top (Plan) view of the Space Shuttle

Click here to start the lesson.