Defining User-Prescribed Orbital Motion

When an object moves according to a fully-prescribed motion, it does not react to the flow. The object will orbit and rotate only about the specified axes, and at prescribed angular velocities.

If one of the two motion elements is to be user-prescribed, then only that one will be defined using the User-Prescribed properties (as shown below). The other will be defined using the Flow-Driven properties.

To open the Motion Editor:

1. On the Motion quick edit dialog, set the Type to Combined Orbital/Rotational. (If Flow-Driven is unchecked for both motion types, both typesare User-prescribed.)
2. Click Edit... on the Edit Motion line.

To Define User-Prescribed Orbital Motion

1. Click the Angle property button for Orbital Properties.
2. Select the Variation Method for Orbit.
3. Enter the appropriate values.
4. Click Apply.
5. Repeat for the Angular Rotation property.
6. Click OK when finished to close the dialog.

Since both elements in an orbital motion are angular rotations, both use the same angular property variations described in the Angular Rotation topic. The following lists these variation methods for User-Prescribed Orbital motion, and lists where to find more details and illustrations about each:

Variation Methods: User Prescribed Angular Motion

Angle: Constant

Angle: Oscillating

Angle: Table