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3. Create side view sketch of the middle and bottom shell

4. Create a top view profile for the middle shell

5. Convert entities the middle shell profile into a new sketch

6. In a new sketch, Convert Entities the middle shell profile and then linear sketch pattern it downwards (2 inches), this creates the upper fillet reference

7. Add 2 points into the same sketch, where the upper fillet intersect with the bottom shell profile

8. Make a 3D new sketch, and make a new point that is mated along X with one of the intersection points from the upper fillet sketch

9. Insert a reference plane that is defined by those 3 points

10. On this plane, draw a airfoil profile between the intersection points of the upper fillet and bottom shell profiledraw an airfoil between the 2 points from the step above.