Generating Cross Section Curves

We will now generate curves just above Z height found at the base of the inlet walls, using a cross section. First we need to reselect the triangle model we are surfacing, as the cross section model, section_Bonnet_Triangles, is currently selected.

To generate the curves:

1. In the CopyCAD Explorer, double click on the icon to the left of the Bonnet_Triangles model name.
   
   
2. Turn off the points and turn back on the curves display, using the and the buttons on the Draw toolbar.
   
   
3. Click on the Curve Generation button on the Main toolbar.
   
   
4. In the Curve Generation dialog box's Generate From area, click on the Triangle Model Cross Section option.
   
   
5. In the Define Plane dialog box, select Z Plane from the Type list box.
   
   
6. Type 62 in the Z box, as this is just above the Z height of the point you selected on the inlet wall.
   
   
7. In the Define Plane dialog box, click on the Accept button
   
   
8. In the Curve Generation dialog box, click on the Curve Fitting Options button.
   
   
9. In the Curve Fitting Options dialog box, enter the following values:
   • In the Curves Parameterisation list box, select Even Breakpoint Insertion in 3D
     
     
   • Number of breakpoints = 24
     
     
   • Curve Fitting Tolerance = 0.05

Leave the other default values.

10. In the Curve Generation dialog box, click on the Apply button, then the Accept button.

Finally, we need to delete the extra curve created through the bonnet that is not part of an inlet.

11. Click on the Curve Editing button on the Main toolbar.
    
    
12. Click on the extra curve, as shown in the example below.

13. On the Curve Editing side toolbar, click on the Delete Curves button .

Now you have created all the curves needed for the remaining surfaces, you can create a trimmed surface over the main part of the bonnet.

Next:

Creating the Bonnet Trimmed Surface