"""Defines the StochasticGenericMotor class."""
from rocketpy.motors import GenericMotor
from .stochastic_motor_model import StochasticMotorModel
# pylint: disable=too-many-arguments
[docs]
class StochasticGenericMotor(StochasticMotorModel):
"""A Stochastic Generic Motor class that inherits from StochasticModel.
See Also
--------
:ref:`stochastic_model` and
:class:`GenericMotor <rocketpy.motors.GenericMotor>`
Attributes
----------
object : GenericMotor
GenericMotor object to be used as a base for the stochastic model.
thrust_source : list
List of strings representing the thrust source to be selected.
total_impulse : int, float, tuple, list
Total impulse of the motor in newton seconds.
burn_start_time : int, float, tuple, list
Burn start time of the motor in seconds.
burn_out_time : int, float, tuple, list
Burn out time of the motor in seconds.
dry_mass : int, float, tuple, list
Dry mass of the motor in kilograms.
dry_I_11 : int, float, tuple, list
Dry inertia of the motor in kilograms times meters squared.
dry_I_22 : int, float, tuple, list
Dry inertia of the motor in kilograms times meters squared.
dry_I_33 : int, float, tuple, list
Dry inertia of the motor in kilograms times meters squared.
dry_I_12 : int, float, tuple, list
Dry inertia of the motor in kilograms times meters squared.
dry_I_13 : int, float, tuple, list
Dry inertia of the motor in kilograms times meters squared.
dry_I_23 : int, float, tuple, list
Dry inertia of the motor in kilograms times meters squared.
chamber_radius : int, float, tuple, list
Chamber radius of the motor in meters.
chamber_height : int, float, tuple, list
Chamber height of the motor in meters.
chamber_position : int, float, tuple, list
Chamber position of the motor in meters.
nozzle_radius : int, float, tuple, list
Nozzle radius of the motor in meters.
nozzle_position : int, float, tuple, list
Nozzle position of the motor in meters.
center_of_dry_mass_position : int, float, tuple, list
Center of dry mass position of the motor in meters.
interpolation_method : str
Interpolation method to be used. This attribute can not be randomized.
coordinate_system_orientation : str
Coordinate system orientation to be used. This attribute can not be
randomized.
"""
[docs]
def __init__(
self,
generic_motor,
thrust_source=None,
total_impulse=None,
burn_start_time=None,
burn_out_time=None,
propellant_initial_mass=None,
dry_mass=None,
dry_inertia_11=None,
dry_inertia_22=None,
dry_inertia_33=None,
dry_inertia_12=None,
dry_inertia_13=None,
dry_inertia_23=None,
chamber_radius=None,
chamber_height=None,
chamber_position=None,
nozzle_radius=None,
nozzle_position=None,
center_of_dry_mass_position=None,
):
"""Initializes the Stochastic Generic Motor class.
See Also
--------
:ref:`stochastic_model` and
:class:`GenericMotor <rocketpy.motors.GenericMotor>`
Parameters
----------
generic_motor : GenericMotor
GenericMotor object to be used for validation.
thrust_source : list, optional
List of strings representing the thrust source to be selected.
total_impulse : int, float, tuple, list, optional
Total impulse of the motor in newton seconds.
burn_start_time : int, float, tuple, list, optional
Burn start time of the motor in seconds.
burn_out_time : int, float, tuple, list, optional
Burn out time of the motor in seconds.
dry_mass : int, float, tuple, list, optional
Dry mass of the motor in kilograms.
dry_I_11 : int, float, tuple, list, optional
Dry inertia of the motor in kilograms times meters squared.
dry_I_22 : int, float, tuple, list, optional
Dry inertia of the motor in kilograms times meters squared.
dry_I_33 : int, float, tuple, list, optional
Dry inertia of the motor in kilograms times meters squared.
dry_I_12 : int, float, tuple, list, optional
Dry inertia of the motor in kilograms times meters squared.
dry_I_13 : int, float, tuple, list, optional
Dry inertia of the motor in kilograms times meters squared.
dry_I_23 : int, float, tuple, list, optional
Dry inertia of the motor in kilograms times meters squared.
chamber_radius : int, float, tuple, list, optional
Chamber radius of the motor in meters.
chamber_height : int, float, tuple, list, optional
Chamber height of the motor in meters.
chamber_position : int, float, tuple, list, optional
Position of the motor chamber in meters.
nozzle_radius : int, float, tuple, list, optional
Nozzle radius of the motor in meters.
nozzle_position : int, float, tuple, list, optional
Nozzle position of the motor in meters.
center_of_dry_mass_position : int, float, tuple, list, optional
Center of dry mass position of the motor in meters.
"""
super().__init__(
generic_motor,
thrust_source=thrust_source,
total_impulse=total_impulse,
burn_start_time=burn_start_time,
burn_out_time=burn_out_time,
propellant_initial_mass=propellant_initial_mass,
dry_mass=dry_mass,
dry_I_11=dry_inertia_11,
dry_I_22=dry_inertia_22,
dry_I_33=dry_inertia_33,
dry_I_12=dry_inertia_12,
dry_I_13=dry_inertia_13,
dry_I_23=dry_inertia_23,
chamber_radius=chamber_radius,
chamber_height=chamber_height,
chamber_position=chamber_position,
nozzle_radius=nozzle_radius,
nozzle_position=nozzle_position,
center_of_dry_mass_position=center_of_dry_mass_position,
interpolate=None,
coordinate_system_orientation=None,
)
[docs]
def create_object(self):
"""Creates a `GenericMotor` object from the randomly generated input
arguments.
Returns
-------
GenericMotor
GenericMotor object with the randomly generated input arguments.
"""
generated_dict = next(self.dict_generator())
return GenericMotor(
thrust_source=generated_dict["thrust_source"],
burn_time=(
generated_dict["burn_start_time"],
generated_dict["burn_out_time"],
),
propellant_initial_mass=generated_dict["propellant_initial_mass"],
dry_mass=generated_dict["dry_mass"],
dry_inertia=(
generated_dict["dry_I_11"],
generated_dict["dry_I_22"],
generated_dict["dry_I_33"],
generated_dict["dry_I_12"],
generated_dict["dry_I_13"],
generated_dict["dry_I_23"],
),
chamber_radius=generated_dict["chamber_radius"],
chamber_height=generated_dict["chamber_height"],
chamber_position=generated_dict["chamber_position"],
nozzle_radius=generated_dict["nozzle_radius"],
nozzle_position=generated_dict["nozzle_position"],
center_of_dry_mass_position=generated_dict["center_of_dry_mass_position"],
reshape_thrust_curve=(
(generated_dict["burn_start_time"], generated_dict["burn_out_time"]),
generated_dict["total_impulse"],
),
coordinate_system_orientation=generated_dict[
"coordinate_system_orientation"
],
interpolation_method=generated_dict["interpolate"],
)
