Name
|
Description
|
Attributes
|
AveragePreInletPress
|
Average Tank pressure prior to Thruster inlet. This is a weighted average (based on mix ratio) of the Tank.TankPressure property of all attached Tanks with open valves. This property is used in the calculation of the Thruster.ThrusterInletPressure along with the Thruster pressure drop coefficients.
|
Type: Variable
Access: Read-Only
Units: kPa
|
AveragePreInletRefTemp
|
Average Tank reference temperature prior to Thruster inlet. This is a weighted average (based on mix ratio) of the Tank.TankRefTemperature property of all attached Tanks with open valves. This property is used in the calculation of Thrust and Isp along with the AveragePreInletTemp, ThrusterInletPressure, and Thruster coefficients.
|
Type: Variable
Access: Read-Only
Units: Deg C
|
AveragePreInletTemp
|
Average Tank temperature prior to Thruster inlet. This is a weighted average (based on mix ratio) of the Tank.TankTemperature property of all attached Tanks with open valves. This property is used in the calculation of Thrust and Isp along with the AveragePreInletRefTemp, ThrusterInletPressure, and Thruster coefficients.
|
Type: Variable
Access: Read-Only
Units: Deg C
|
DeclaredName
|
The name of the object as declared.
|
Type: String
Access: Read-Only
|
DisplayName
|
The name displayed for this object in output windows such as views, plots, and reports.
|
Type: String
Access: Read/Write
|
DutyCycle
|
The percentage of on-time of the thruster during a burn. This property scales the mass depletion and the acceleration due to thrust.
|
Type: Variable
Access: Read/Write
|
ForceTankConsistency
|
Determines whether the temperature and/or pressure of the attached Tanks are equalized post-burn. The equalized temperature and/or pressure are computed as a weighted average of all attached Tanks, based on their mix ratios.
|
Type: Variable
Access: Read/Write
|
IspScaleFactor
|
Scale factor applied to the Isp that is used in determining mass flow.
|
Type: Variable
Access: Read/Write
|
MaxPressureDiff
|
The maximum pressure difference that is allowed between Tanks attached to this Thruster, if consistency checking is enabled by setting TestTankConsistency to 1.
|
Type: Variable
Access: Read/Write
Units: kPa
|
MaxTempDiff
|
Maximum temperature difference that is allowed between Tanks attached to this Thruster, if consistency checking is enabled by setting TestTankConsistency to 1.
|
Type: Variable
Access: Read/Write
Units: Deg C
|
ObjectId
|
The unique identifier for the object.
|
Type: Variable
Access: Read-Only
|
ObjectType
|
The type of the object.
|
Type: String
Access: Read-Only
|
Orientation
|
Dimensionless unit vector representing pointing direction of the applied acceleration in the Spacecraft body coordinate frame. This is only used to determine the direction of applied acceleration when a Finite Burn using the "Attitude" system is used to maneuver the Spacecraft. Otherwise, the FiniteBurn or ImpulsiveBurn object specifies the direction of the maneuver.
|
Type: Array
Access: Read/Write
Units: m
|
Position
|
The vector representing the dry vehicle center of mass (i.e. no attached Tanks are included in this property) referenced from the origin of the Spacecraft's body fixed frame. This property is used in calculating the CenterOfMass, which includes all attached Tanks in its calculation.
|
Type: Array
Access: Read/Write
Units: m
|
ScaleFactor
|
A measure of the efficiency of the thruster. This property adjusts the acceleration due to thrust without changing the mass depletion.
|
Type: Variable
Access: Read/Write
|
TankValve
|
Determines the state of a valve controlling mass flow from a set of tanks to the thruster. A value of 0 indicates no mass will flow and a value of 1 indicates mass will flow.
|
Type: Array
Access: Read/Write
|
TestTankConsistency
|
Determines whether temperature and pressure consistency checks are performed when multiple Tanks simultaneously feed a Thruster.
|
Type: Variable
Access: Read/Write
|
ThrusterC1
|
First coefficient of the thrust performance polynomial.
|
Type: Variable
Access: Read/Write
Units: N
|
ThrusterC10
|
Tenth coefficient of the thrust performance polynomial.
|
Type: Variable
Access: Read/Write
Units: N/kPa^C11
|
ThrusterC11
|
Eleventh coefficient of the thrust performance polynomial.
|
Type: Variable
Access: Read/Write
|
ThrusterC12
|
Twelfth coefficient of the thrust performance polynomial.
|
Type: Variable
Access: Read/Write
Units: N
|
ThrusterC13
|
Thirteenth coefficient of the thrust performance polynomial.
|
Type: Variable
Access: Read/Write
|
ThrusterC14
|
Fourteenth coefficient of the thrust performance polynomial.
|
Type: Variable
Access: Read/Write
Units: 1/kPa
|
ThrusterC15
|
Fifteenth coefficient of the thrust performance polynomial.
|
Type: Variable
Access: Read/Write
|
ThrusterC16
|
Sixteenth coefficient of the thrust performance polynomial.
|
Type: Variable
Access: Read/Write
Units: 1/kPa
|
ThrusterC2
|
Second coefficient of the thrust performance polynomial.
|
Type: Variable
Access: Read/Write
Units: N/kPa
|
ThrusterC3
|
Third coefficient of the thrust performance polynomial.
|
Type: Variable
Access: Read/Write
Units: N
|
ThrusterC4
|
Fourth coefficient of the thrust performance polynomial.
|
Type: Variable
Access: Read/Write
Units: N/kPa
|
ThrusterC5
|
Fifth coefficient of the thrust performance polynomial.
|
Type: Variable
Access: Read/Write
Units: N/kPa^2
|
ThrusterC6
|
Sixth coefficient of the thrust performance polynomial.
|
Type: Variable
Access: Read/Write
Units: N/kPa^C7
|
ThrusterC7
|
Seventh coefficient of the thrust performance polynomial.
|
Type: Variable
Access: Read/Write
|
ThrusterC8
|
Eighth coefficient of the thrust performance polynomial.
|
Type: Variable
Access: Read/Write
Units: N/kPa^C9
|
ThrusterC9
|
Ninth coefficient of the thrust performance polynomial.
|
Type: Variable
Access: Read/Write
|
ThrusterGravityConst
|
The value of the gravitational acceleration at the surface of the Earth. Used in the conversion of specific impulse (Isp) between English and MKS units. The default value is 9.81 m/s^2 but can be adjusted to the value adopted by the thruster manufacturer. Used for mass depletion.
|
Type: Variable
Access: Read/Write
Units: m/s^2
|
ThrusterInletPressure
|
Pressure at the Thruster inlet. This is calculated based on the Thruster.AveragePreInletPressure property and the pressure drop coefficients, Thruster.PC1-6. This property is used in the calculation of Thrust and Isp along with the AveragePreInletTemp, AveragePreInletRefTemp, and Thruster coefficients.
|
Type: Variable
Access: Read-Only
|
ThrusterK1
|
First coefficient of the specific impulse (Isp) performance polynomial.
|
Type: Variable
Access: Read/Write
Units: s
|
ThrusterK10
|
Tenth coefficient of the specific impulse (Isp) performance polynomial.
|
Type: Variable
Access: Read/Write
Units: s/kPa^K11
|
ThrusterK11
|
Eleventh coefficient of the specific impulse (Isp) performance polynomial.
|
Type: Variable
Access: Read/Write
|
ThrusterK12
|
Twelfth coefficient of the specific impulse (Isp) performance polynomial.
|
Type: Variable
Access: Read/Write
Units: s
|
ThrusterK13
|
Thirteenth coefficient of the specific impulse (Isp) performance polynomial.
|
Type: Variable
Access: Read/Write
|
ThrusterK14
|
Fourteenth coefficient of the specific impulse (Isp) performance polynomial.
|
Type: Variable
Access: Read/Write
Units: 1/kPa
|
ThrusterK15
|
Fifteenth coefficient of the specific impulse (Isp) performance polynomial.
|
Type: Variable
Access: Read/Write
|
ThrusterK16
|
Sixteenth coefficient of the specific impulse (Isp) performance polynomial.
|
Type: Variable
Access: Read/Write
Units: 1/kPa
|
ThrusterK2
|
Second coefficient of the specific impulse (Isp) performance polynomial.
|
Type: Variable
Access: Read/Write
Units: s/kPa
|
ThrusterK3
|
Third coefficient of the specific impulse (Isp) performance polynomial.
|
Type: Variable
Access: Read/Write
Units: s
|
ThrusterK4
|
Fourth coefficient of the specific impulse (Isp) performance polynomial.
|
Type: Variable
Access: Read/Write
Units: s/kPa
|
ThrusterK5
|
Fifth coefficient of the specific impulse (Isp) performance polynomial.
|
Type: Variable
Access: Read/Write
Units: s/kPa^2
|
ThrusterK6
|
Sixth coefficient of the specific impulse (Isp) performance polynomial.
|
Type: Variable
Access: Read/Write
Units: s/kPa^K7
|
ThrusterK7
|
Seventh coefficient of the specific impulse (Isp) performance polynomial.
|
Type: Variable
Access: Read/Write
|
ThrusterK8
|
Eighth coefficient of the specific impulse (Isp) performance polynomial.
|
Type: Variable
Access: Read/Write
Units: s/kPa^K9
|
ThrusterK9
|
Ninth coefficient of the specific impulse (Isp) performance polynomial.
|
Type: Variable
Access: Read/Write
|
ThrusterOn
|
Determines whether a thruster is on or off. Individual valves connected to a Thruster can also be opened or closed using the Valve.State property.
|
Type: Variable
Access: Read/Write
|
ThrusterPC1
|
First coefficient of the polynomial to model the pressure drop from Tank to Thruster
|
Type: Variable
Access: Read/Write
Units: kPa
|
ThrusterPC2
|
Second coefficient of the polynomial to model the pressure drop from Tank to Thruster
|
Type: Variable
Access: Read/Write
|
ThrusterPC3
|
Third coefficient of the polynomial to model the pressure drop from Tank to Thruster
|
Type: Variable
Access: Read/Write
|
ThrusterPC4
|
Fourth coefficient of the polynomial to model the pressure drop from Tank to Thruster
|
Type: Variable
Access: Read/Write
|
ThrusterPC5
|
Fifth coefficient of the polynomial to model the pressure drop from Tank to Thruster
|
Type: Variable
Access: Read/Write
|
ThrusterPC6
|
Sixth coefficient of the polynomial to model the pressure drop from Tank to Thruster
|
Type: Variable
Access: Read/Write
|
Type
|
The type of thruster.
|
Type: String
Access: Read/Write
|
UnboundedDutyCycle
|
The percentage of on-time of the thruster during a burn. This property offers the same functionality as the DutyCycle property, but doesn't have range restrictions. It is recomended that the primary DutyCycle property be used, but this property is supported to offer compatibility with previous versions of FreeFlyer. This property scales the mass depletion and the acceleration due to thrust.
|
Type: Variable
Access: Read/Write
|
Valves
|
The Valves that connect the thruster to tanks.
|
Type: Array of Valve
Access: Read-Only
|
