Part Modeling > Edit Features > Pattern > Fill Patterns > Example: Rotating Circular or Spiral Fill Pattern Members
  
Example: Rotating Circular or Spiral Fill Pattern Members
Begin with the original part and the pattern leader:
When you create a Fill pattern with a circular or spiral grid template, you can select the Follow template rotation option to rotate the members along the grid template.
When you clear the Follow template rotation check box, all pattern members share the pattern leader's orientation.