Description
Spacecraft parameters that can be modified by an Update segment.
Members
| Member | Value | Description |
|---|---|---|
| eVAUpdateParamDragArea | 0 | Drag Area - the cross-sectional area of the spacecraft assumed perpendicular to the direction of motion, used for atmospheric drag calculations. |
| eVAUpdateParamSRPArea | 1 | Solar Radiation Pressure (Spherical) Area - the cross-sectional area of the spacecraft assumed perpendicular to the direction of solar radiation, used for solar radiation calculations. |
| eVAUpdateParamDryMass | 2 | Dry Mass - the mass of the spacecraft exclusive of propellant. |
| eVAUpdateParamFuelMass | 3 | The mass of the spacecraft propellant. |
| eVAUpdateParamFuelDensity | 4 | The density of the fuel tank. |
| eVAUpdateParamTankPressure | 5 | The fuel tank pressure. |
| eVAUpdateParamTankTemp | 6 | The temperature of the fuel tank. |
| eVAUpdateParamCr | 7 | Solar Radiation Pressure (Spherical) Coefficient (Cr) - the reflectivity of the spacecraft used for solar radiation pressure calculations, where 2.0 is fully reflective and 1.0 is not reflective at all. |
| eVAUpdateParamCd | 8 | Drag Coefficient (Cd) - the dimensionless drag coefficient associated with the drag area. |
| eVAUpdateParamCk | 9 | Radiation Pressure (Albedo/Thermal) Coefficient (Ck) - the reflectivity of the spacecraft used for central body radiation pressure (albedo / thermal pressure) calculations, where 2.0 is fully reflective and 1.0 is not reflective at all. |
| eVAUpdateParamRadiationPressureArea | 10 | Radiation Pressure (Albedo/Thermal) Area - the cross-sectional area of the spacecraft assumed perpendicular to the direction of central body radiation, used for central body radiation (albedo / thermal pressure) calculations. |