Geometric Design

Four semispheres will be generated to model the radome as a thin layer approximation. It may be achieved by using the sphere command, which requires both the center and the radius. The table below shows the parameters to be used for every sphere:
Sphere X (mm) Y (mm) Z (mm) Radius (mm)
1 0 0 -100 250
2 0 0 -100 250+thickness
3 0 0 -100 250+ thickness+t
4 0 0 -100 250+(2*thickness)+t
Note that the sphere command creates the full closed sphere and we need just the upper semisphere. Then, after creating each sphere, we use the explode command to separate it in several surfaces, then remove the lower semisphere with the delete command, and finally we use the group command on the upper remaining surfaces to have one object for every semisphere.
Figure 1. Command line semispheres definition


After creating the four semispheres, in the tree we can see that they have been added in order as Objects, and each one has a different name.
Figure 2. List of geometric entities in the tree