The Update segment can be used to modify satellite properties and user variables to reflect changes that occur during the mission.
The General tab can be used to update all of the Spacecraft Configuration and Fuel Tank parameters except Tank Volume and GPS Solar Radiation Pressure. For each parameter, the Update segment can carry out the actions described in the following table:
| Action | Description |
|---|---|
| Add value | Add the quantity entered in the Value column to the current value for this parameter. |
| Subtract value | Subtract the quantity entered in the Value column from the current value for this parameter. |
| Set to new value | Replace the current value for this parameter with the quantity entered in the Value column. |
| No change in value. | Leave the current value for this parameter unchanged (ignoring any quantity that may appear in the Value column). |
The User Variables tab can be used to edit the values of user variables that have been defined for the mission.
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