How to create a turbofan exhaust mixer in CATIA V5

Chris Shakal

12 Dec, 2012 05:07 PM

Steps below:

1. Step 1:

   Enter GSD, and create a circle in sketcher.
   

   

2. Step 2:

   Offset a plane from the plane you created the circle with. Enter sketcher on the new plane and create the lobed shape shown. Dimensions aren't critical, since this isn't a technically correct mixer.
   

   

3. Step 3:

   Model should look like this:
   

   

4. Step 4:

   Extrude each sketch a little bit. The dimensions don't matter, because they'll be used as tangency supports later.
   

   

5. Step 5:

   Create a multi-section surface with the two sketches. Use the extrusions as Supports for tangency. Make sure the Closing Points are correct.
   

   

6. Step 6:

   Hide the extrusions and sketches. Thicken the multisection surface a little bit.
   

   

7. Step 7:

   Enter sketcher on a new plane 90 degrees from the first 2 planes. Make the sketch shown. I kind of guessed on the dimensions and made it look right.
   

   

8. Step 8:

   Make a 360 degree rotational extrusion with the sketch.
   

   

9. Step 9:

   Split the mixer with the rotated extrusion and cut off the back part.
   

   

10. Step 10:

    You should end up with something like this:
    

    

11. Step 11:

    Rendered: