Class InertialForces

  • All Implemented Interfaces:
    ForceModel, EventDetectorsProvider, ParameterDriversProvider

    public class InertialForces
    extends Object
    implements ForceModel
    Inertial force model.

    This force model adds the pseudo-forces due to inertia between the integrating frame and a reference inertial frame from which this force model is built.

    Two typical use-cases are propagating AbsolutePVCoordinates in either:

    • a non-inertial frame (for example propagating in the rotating ITRF frame),
    • an inertial frame that is not related to the main attracting body (for example propagating in EME2000 frame a trajectory about the Sun and Jupiter).

    In the second used case above, the attraction from the two main bodies, i.e. the Sun and Jupiter, should be represented by SingleBodyAbsoluteAttraction instances.

    Author:
    Guillaume Obrecht, Luc Maisonobe
    See Also:
    SingleBodyAbsoluteAttraction
    • Method Detail

      • dependsOnPositionOnly

        public boolean dependsOnPositionOnly()
        Check if force model depends on position only at a given, fixed date.
        Specified by:
        dependsOnPositionOnly in interface ForceModel
        Returns:
        true if force model depends on position only, false if it depends on velocity, either directly or due to a dependency on attitude
      • acceleration

        public Vector3D acceleration​(SpacecraftState s,
                                     double[] parameters)
        Compute acceleration.
        Specified by:
        acceleration in interface ForceModel
        Parameters:
        s - current state information: date, kinematics, attitude
        parameters - values of the force model parameters at state date, only 1 value for each parameterDriver
        Returns:
        acceleration in same frame as state
      • acceleration

        public <T extends CalculusFieldElement<T>> FieldVector3D<T> acceleration​(FieldSpacecraftState<T> s,
                                                                                 T[] parameters)
        Compute acceleration.
        Specified by:
        acceleration in interface ForceModel
        Type Parameters:
        T - type of the elements
        Parameters:
        s - current state information: date, kinematics, attitude
        parameters - values of the force model parameters at state date, only 1 value for each parameterDriver
        Returns:
        acceleration in same frame as state