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• There is a separate Sketch tab and a new End Sketch button. All the sketching tools are now under the Sketch tab and you need to select the End Sketch button when you are done with the sketch. You should be able to figure it out by poking around. 

• If you are having You can skip the part of the video that involves sketching the chord at the blade tip since you may have trouble snapping to the leading edge of the blade when sketching. This is done to determine the angle between the rotation plane and the chord at the blade tip, you may skip that part of the video. 

  NOTE: The tip chord angle to the incident airflow before any rotations are made to the blade geometry

  . The video tells you what the angle is; it is -1.06 degrees.  

• So in In order determine the total angle you must rotate the blade to get a desired blade pitch, use the expression

  LaTeX Formatting
  $$ \theta = \alpha - 1.06 $$

  where theta is the number of degrees you must rotate the blade, and alpha is the desired pitch angle. Alpha should be negative for positive pitch angles, and positive for negative pitch angles (this is to remain consistent with the way the rotations were defined in the videos, where theta was a negative angle). 

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