fusion_engine Class Reference

A simple fusion engine model. More...

#include <fusion_engine.h>

Inherits dsim_model.

Public Member Functions
void	initialize_data ()
	Initialize outlets and output variables.
void	initialization_complete ()
	Finish initialization. More...
void	initialize_timestep ()
	Computation done prior to numerical integration.
void	rhs (double t, double jd)
	Computation done during numerical integration. More...
void	complete_timestep ()
	Computation done after numerical integration. More...

Protected Attributes
dsim_variable	unitVector_dsim
	Unit vector.
dsim_variable	positionVector_dsim
	Position vector.
dsim_variable	mGimbalToBody_dsim
	From gimbal frame to body frame.
dsim_variable	eff_dsim
	Engine efficiency.
dsim_variable	maximumThrust_dsim
	Maximum thrust.
dsim_variable	centerOfMass_dsim
	parent object COM, for computing torques
dsim_variable	qECIToBody_dsim
	parent object quaternion
Inputs
dsim_variable	exhaustVelocity_dsim
	Exhaust velocity.
dsim_variable	throttle_dsim
	Throttle.
dsim_variable	gimbalAngle_dsim
	Gimbal angle.
dsim_variable	mixtureRatio_dsim
	Mixture ratio.
States
dsim_variable	massR2_dsim
	Mass of reactant 2.
dsim_variable	massR1_dsim
	Mass of reactant 1.

Outputs
dsim_variable	thrust_dsim
	Engine instantaneous thrust.
dsim_variable	thrusterUnitVector_dsim
	UnitVector.
dsim_variable	mass_dsim
	Total fuel mass.
dsim_variable	thrusterOn_dsim
	1 if a thruster is on
dsim_variable	appliedForce_dsim
	Applied force to parent.
dsim_variable	appliedTorque_dsim
	Applied torque to parent.
dsim_variable	thrusterNozzleWidth_dsim
	Thruster nozzle width (3D display)
dsim_variable	thrusterFuelType_dsim
	Thruster fuel type (3D display)

Detailed Description

A simple fusion engine model.

Models an array of p-B11 fusion engines. The engines have two fuel sources and each has a controllable thrust and exhaust velocity. The thrust vector can be changed by two gimbal angles per engine. This is an ideal rocket engine model and can be used for any electric-type thruster.

Member Function Documentation

initialization_complete()

void fusion_engine::initialization_complete

(

)

Finish initialization.

Get the parent center of mass and quaternion.

References centerOfMass_dsim, and qECIToBody_dsim.

rhs()

void fusion_engine::rhs	(	double	t,
		double	jd
	)

Computation done during numerical integration.

The right hand side applies the force and torque to the parent object and computes the mass derivative using the mass flow.

References appliedForce_dsim, appliedTorque_dsim, massR1_dsim, massR2_dsim, and mixtureRatio_dsim.

complete_timestep()

void fusion_engine::complete_timestep

(

)

Computation done after numerical integration.

Set the fuel mass remaining for both reactants at the end of the timestep.

References mass_dsim, massR1_dsim, and massR2_dsim.

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The documentation for this class was generated from the following files:

• fusion_engine.h
• fusion_engine.cc