uavsim.flightdynamicsmodel
Class AircraftRigidBodyElement

java.lang.Object
  uavsim.flightdynamicsmodel.AircraftRigidBodyElement

All Implemented Interfaces:

java.lang.Cloneable

public class AircraftRigidBodyElement
extends java.lang.Object
implements java.lang.Cloneable

Defines a single element of the finite-element model of the rigid-body model of an aircraft. For compatibility with the other classes derived from the original source (Physics for Game Developers by David Bourg), the member variables are public and mutable. Eventually they will be protected appropriately.

Author:

Dan Tappan [18.08.11]

Field Summary

double	_area the area in square feet
Vector	_centerOfGravity the center of gravity
int	_controlSurfacePosition the position of this element if it is functioning as a control surface.
double	_dihedralAngle the dihedral angle in degrees, which is its perpendicular component
double	_incidenceAngle the angle of incidence in degrees, which is its default pitch without any input
Vector	_localInertia the local inertia imparted on the rigid body by this element
double	_mass the mass in pounds
Vector	_normalVector the normal vector of this element based on its attitude
Vector	_relativeOrigin the origin of the center of the element from a fixed reference point on the model it is part of.

Constructor Summary

AircraftRigidBodyElement(double mass, double area, double incidenceAngle, double dihedralAngle, Vector relativeOrigin, Vector localInertia)
Creates a rigid-body element.

Method Summary

AircraftRigidBodyElement

clone()

Methods inherited from class java.lang.Object

equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

_area

public double _area

the area in square feet

_centerOfGravity

public Vector _centerOfGravity

the center of gravity

_controlSurfacePosition

public int _controlSurfacePosition

the position of this element if it is functioning as a control surface. For static surfaces, like a wing, this is not applicable, but for ailerons, elevators, and the rudder, it refers to positive (+1), neutral (0), and negative (-1) deflection. Proportional deflection is not implemented yet, so these inputs correspond to {+15,0,-15} degrees, respectively

_dihedralAngle

public double _dihedralAngle

the dihedral angle in degrees, which is its perpendicular component

_incidenceAngle

public double _incidenceAngle

the angle of incidence in degrees, which is its default pitch without any input

_localInertia

public Vector _localInertia

the local inertia imparted on the rigid body by this element

_mass

public double _mass

the mass in pounds

_normalVector

public Vector _normalVector

the normal vector of this element based on its attitude

_relativeOrigin

public Vector _relativeOrigin

the origin of the center of the element from a fixed reference point on the model it is part of. Initially, before the center of gravity is calculated for the aircraft, the coordinate system is inline from the tail. Afterwards, it is with respect to the center of gravity

Constructor Detail

AircraftRigidBodyElement

public AircraftRigidBodyElement(double mass,
                                double area,
                                double incidenceAngle,
                                double dihedralAngle,
                                Vector relativeOrigin,
                                Vector localInertia)

Creates a rigid-body element.

Parameters:

mass - - the mass in pounds

area - - the area in square feet

incidenceAngle - - the angle of incidence in degrees, which is its default pitch without any input

dihedralAngle - - the dihedral angle in degrees, which is its perpendicular component

relativeOrigin - - the origin of the center of the element from a fixed reference point on the model it is part of

localInertia - - the local inertia imparted on the rigid body

Method Detail

clone

public AircraftRigidBodyElement clone()

Overrides:

clone in class java.lang.Object