Spacecraft Properties components are a subset of Calculation Object components. These objects can be used to report how a propagator plugin changes these values over time.
ComponentBrowser */ SetValue "Calculation Objects" {Component} {Attribute} <Value> [{Unit}]
ComponentBrowser */ Duplicate "Calculation Objects" {Component} <Duplicate Component Name>
When the Spacecraft Properties components' properties are changed by a propagator evalution plugin, they keep the new value in subsequent steps in the propagation, and in subsequent segments in the Mission Control Sequence.
The Spacecraft Properties components are:
| Component | Description |
|---|---|
| Cd | Drag coefficient |
| Cr | Solar radiation pressure coefficient |
| DragArea | Drag area |
| RadPressureArea | Radiation pressure area |
| RadPressureCoefficient | Radiation pressure coefficient |
| SRPArea | Solar radiation pressure area |
The attributes for each component have the same names and value selections that appear in the Astrogator graphical user interface.
ComponentBrowser */ Duplicate "Calculation Objects" DragArea "My DragArea"
ComponentBrowser */ SetValue "Calculation Objects" "Copy of SRPArea" ComponentName "My SRP Area"
STK Programming Interface 11.0.1