ChemicalTank Object

Description

The ChemicalTank object is a base type that provides mixture ratio, fill line, density, temperature, pressure, and volume properties to the objects that derive from it. See the Maneuvering Guide for more information.

Users cannot create instances of this type of object. However, users can access instances of this object type that have been created indirectly, for example as children of other objects. Users can also access any static properties and methods on this object type.

Inheritance Hierarchy: Object->Hardware->Tank->ChemicalTank

Derived Types: InterpolatedTank, SphericalTank

Available In Editions:

Engineer

Mission

Timing Precision Mode

This page describes functionality in millisecond timing precision mode. Millisecond timing precision mode is deprecated and will be removed in a future release. We recommend that you migrate your Mission Plans to nanosecond timing precision mode.

Click here to see the documentation for this object in nanosecond timing precision mode.

Name	Description	Attributes
DeclaredName	The name of the object as declared.	Type: String Access: Read-Only
MassMixPartsPer	Indicates the ratio of mass supplied by this Tank when more than one Tank is being used to supply a Thruster. This property sets the number of parts supplied by this Tank; the resulting ratio is calculated as parts supplied by this Tank per total parts supplied by all Tanks for a given Thruster. This property is used in the calculation of the Thruster AveragePreInletPress, AveragePreInletRefTemp, and AveragePreInletTemp properties. If only one Tank is used at a time, this property should be set to 1.	Type: Variable Access: Read/Write Units: parts
MOI	The tank moment of inertia tensor.	Type: Matrix Access: Read-Only Units: kg m^2
Name	The name displayed for this object in output windows such as views, plots, and reports.	Type: String Access: Read/Write
ObjectId	The unique identifier for the object.	Type: Variable Access: Read-Only
ObjectType	The type of the object.	Type: String Access: Read-Only
TankCenterOfGravity	The center of gravity associated with the fuel mass in the tank. This location is determined based on the tank's reference location, fill line orientation, tank volume, fuel mass, and fuel density. The location is referenced from the origin of the Spacecraft BCS and is measured in meters.	Type: Array Access: Read-Only Units: m
TankFuelDensity	The density of the fuel in the Tank.	Type: Variable Access: Read/Write Units: kg/m^3
TankMass	The current mass of the fuel in the Tank. This property is updated as fuel is consumed.	Type: Variable Access: Read/Write Units: kg
TankOrientation	The unit vector in the Spacecraft body coordinate system that defines the primary axis (or z-axis) of the tank. The tank's fill line is oriented perpendicular to this axis. The tank's center of gravity is determined based on this fill line orientation, the tank reference location, tank volume, fuel mass, and fuel density.	Type: Array Access: Read/Write
TankPressure	The pressure of the Tank. The Thruster.AveragePreInletPress property indicates the weighted average pressure (based on mix ratio) for all Tanks attached to that Thruster with open valves. If the TestTankConsistency property of a Thruster is set to 1, the pressure for each Tank attached to that Thruster cannot differ by more than the MaxPressureDiff for that Thruster. If the ForceTankConsistency property of a Thruster includes pressure equalization, the pressure of each Tank attached to that Thruster will be equalized post-burn using a weighted average of all attached Tanks, based on their mix ratios.	Type: Variable Access: Read/Write Units: kPa
TankPressureControl	Specifies whether to model a reduction of tank pressure as mass is depleted (blow down system), or to model a pressure-regulated system.	Type: Variable Access: Read/Write
TankReference	The geometric center of the tank. This location is referenced from the origin of the Spacecraft BCS. The tank's center of gravity is determined based on this reference location, the fill line orientation, tank volume, fuel mass, and fuel density.	Type: Array Access: Read/Write Units: m
TankRefTemperature	The temperature of the Tank when it is first loaded with fuel. The Thruster.AveragePreInletRefTemp indicates the weighted average reference temperature (based on mix ratio) for all Tanks attached to that Thruster with open valves. The AveragePreInletRefTemp is used in the calculation of Thrust and Isp along with the AveragePreInletTemp, ThrusterInletPressure, and Thruster coefficients.	Type: Variable Access: Read/Write Units: Deg C
TankTemperature	The temperature of the Tank. The Thruster.AveragePreInletTemp property indicates the weighted average temperature (based on mix ratio) for all Tanks attached to that Thruster with open valves. The AveragePreInletTemp is used in the calculation of Thrust and Isp along with the AveragePreInletRefTemp, ThrusterInletPressure, and Thruster coefficients. If the TestTankConsistency property of a Thruster is set to 1, the temperatures of all Tanks attached to that Thruster cannot differ by more than the MaxTempDiff for that Thruster. If the ForceTankConsistency property of a Thruster includes temperature equalization, the temperature of each Tank attached to that Thruster will be equalized post-burn using a weighted average of all attached Tanks, based on their mix ratios.	Type: Variable Access: Read/Write Units: Deg C
TankVolume	The physical volume of the Tank.	Type: Variable Access: Read/Write Units: m^3

Name

Description

Attributes

TankCOGX

The X-component of the center of gravity associated with the fuel mass in the tank. This location is determined based on the tank's reference location, fill line orientation, tank volume, fuel mass, and fuel density. The location is referenced from the origin of the Spacecraft BCS and is measured in meters.

This property has been Deprecated. Please use the TankCenterOfGravity vector property instead.