simIncludeThruster

class simIncludeThruster.thrusterFactory

Bases: object

Simulation Thruster Factory Class

addToSpacecraft(modelTag, thEffector, sc)

This function should be called after all Thruster devices are created with create() It creates the C-class container for the array of TH devices, and attaches this container to the spacecraft object

Parameters:

• modelTag (string) – module model tag string

• thEffector (thrusterEffector) – thruster effector handle

• sc (spacecraft)

addToSpacecraftSubcomponent(modelTag, thEffector, baseEffector, segment=1, r_PcP_P=None)

This function is for adding a thruster cluster to intermediate bodies

Parameters:

• modelTag (string) – module model tag string

• thEffector (thrusterEffector) – thruster effector handle

• baseEffector (stateEffector) – intermediate body to be attached to, see Advanced: Effector Module Branching for the state effectors that can host one

• segment (int) – one-based segment of a multi-body base effector, counting outward from the hub and defaulting to the segment attached to the hub

• r_PcP_P (list) – [m] parent body center of mass relative to the parent body frame origin, in parent frame components, left unset when the two points coincide

create(thrusterType, r_B, tHat_B, **kwargs)

This function is called to setup a thruster device in python, and adds it to the of thruster factory in thrusterList{}. The function returns a copy of the device that can be changed if needed. The first 3 arguments are required, the remaining arguments are optional with:

Parameters:

• thrusterType (string) – thruster manufacturing name.:

• r_B (list) – vector with thruster location in B-frame components:

• tHat_B (list) – vector with thruster force direction unit vector:

• kwargs –

  useMinPulseTime: BOOL

  flag if the thruster model should use a minimum impulse time

  areaNozzle: float

  thruster nozzle exhaust cone exit area

  steadyIsp: float

  thruster fuel efficiency in Isp (seconds)

  MaxThrust: float

  maximum thruster force in Newtons

  thrusterMagDisp: float

  thruster dispersion percentage

  MinOnTime: float

  thruster minimum on time

  cutoffFrequency: float

  frequency of first-order filter dynamics

  swirlTorque: float

  constant momentum from ionic thrusters

  thrBlowDownCoeff: list

  vector with polynomial coefficients for fuel mass to thrust blow down model in descending order

  ispBlowDownCoeff: list

  vector with polynomial coefficients for fuel mass to Isp blow down model in descending order

getConfigMessage()

Returns a FSW THRArrayConfigMsg reflecting the current thruster setup.

Returns:

thrMessage

getNumOfDevices()

Returns the number of RW devices setup.

Returns:

number of thruster devices