| SpaceCAD Lesson 9. Sectional Views: Gemini Spacecraft Landing System STEP 2. Section A |
| In this
step, we will work on the circle labeled Section A.
Start by setting the Snap to Center,
then starting at the center of Section A, make a circle
that has a radius of 1. Set the Snap
back to Grid, then draw two circles side by side that
each have a radius of 0.2253. They should be
positioned near the top of the circle and slightly off
center to the right. It will look like this:
Now you will use the Arc
(Sp, Ep, Mid)
One limitation of the free version of CadStdŽ, is the absence of the Trim command. With Trim, we could easily remove the portions of the curved lines that overlap the circles. Since we do not have Trim in this version, we need to retrace the portions of the circles that are visible underneath the curves using Arc (Cen, Sp, Ep). You will have to switch your Snap between Center, Grid and None as appropriate. Your goal is to outline the small circles you drew at the top of this page. Draw the circles without overlapping the cables you just drew. When you are finished, delete the original circles. The new circles you have now made are highlighted below. It should look like this:
Click the NEXT button to go to the next step. |
command for the rest of this
step. Draw in the curves below using this
command. It is ok if they are not exactly the same,
but try to keep them as close as possible and scaled very
closely. You will have to change the Snap
to None several times.
