Defining User-Prescribed Nutating Motion

When an object moves according to a fully-prescribed nutating motion, it does not react to the flow. The object nutates in the specified direction at the prescribed nutation velocity.

To open the Motion Editor:

1. On the Motion quick edit dialog, set the Type to Nutating, and uncheck Flow-Driven.
2. Click Edit... on the Edit Motion line.

To Define User-Prescribed Nutating Motion

The Nutating Angle through which the object sweeps is the only property to define:

1. Select the Variation Method (described below).
2. Enter the appropriate values.
3. Click Apply.
4. Click OK.

Nutation Angle Variation Methods

Constant Nutating Angular Speed

Enter the angular speed at which the object nutates. The units pull-down menu allows selection of either radians per second or RPM.

Table

The table allows for specification of a Nutation Angle position at specific times. The angle is relative to the Initial Position prescribed on the Motion task dialog.

• Enter Nutation Angle and Time data into the table.
• Check the Cyclical box to repeat only forward sweeps through the angle table.
• Check the Reciprocating box to repeat forward and reverse sweeps through the angle table.