More Options... for maneuvers
The More Options... button opens the More Attitude Options dialog box, which presents some or all of the following parameters, depending on the selected Attitude Control option.
Parameter | Description |
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Use attitude page definition for other STK functions | If you select this, then all other calculations in STK, including the 3D Graphics window, will use the attitude specified by the satellite object’s Basic - Attitude properties, ignoring the actual attitude during the maneuver. |
Use maneuver attitude for other STK functions | If you select this, then all other calculations in STK, including the 3D Graphics window, will use the attitude calculated during the maneuver. |
Direction opposite engine exhaust | If you are using an engine model instead of a thruster set, this setting specifies whether the engine acceleration (the direction opposite the engine's exhaust) is aligned with the positive or negative X, Y, or Z body axis. To specify a direction other than along a body axis, use a thruster set, in which case this option becomes disabled. |
Constraint Vector | For the attitude control settings that don't fully define the attitude, the spacecraft attitude is aligned with the thrust direction based on the orientation of the engine(s). Use these fields to specify a constraint vector in spacecraft body coordinates to complete the attitude definition. Define the vector toward which this body vector is constrained, and specify whether it is positive or negative.
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Attitude Before and After Maneuver | Prior to and after the maneuver, Astrogator uses the attitude specified by the Basic - Attitude properties, unless there are multiple maneuvers in the MCS. During the maneuver, Astrogator uses the attitude defined by the Maneuver segment. The Lead Duration and Trail Duration fields specify how long before the maneuver starts and how long after the maneuver ends Astrogator continues to use the attitude specified in the Maneuver segment. The attitude during the lead time is held inertially fixed as the attitude at ignition. Similarly, the attitude at the maneuver's end is the inertial attitude after the Maneuver segment. This attitude may be different than the attitude used when the engine shuts down, such as in the case where a satellite runs out of fuel during a maneuver. The transition between attitudes is modeled as an instantaneous reorientation. |