LookAheadPropagator#

class ansys.stk.core.stkobjects.LookAheadPropagator#

IntEnum

Overview#

UNKNOWN

Reserved for look ahead propagators that are not currently supported.

HOLD_CENTRAL_BODY_INERTIAL_POSITION

The HoldCBIPosition look ahead propagator keeps position and velocity constant in the inertial (i.e., CBI) frame.

HOLD_CENTRAL_BODY_FIXED_POSITION

The HoldCBFPosition look ahead propagator keeps position and velocity constant in the fixed (i.e., CBF) frame.

TWO_BODY

Two-Body is an analytical propagator that generates ephemeris by evaluating a formula.

J2_PERTURBATION

The J2 Perturbation (first-order) propagator accounts for secular variations in the orbit elements due to Earth oblateness.

J4_PERTURBATION

The J4 Perturbation (second-order) propagator accounts for secular variations in the orbit elements due to Earth oblateness.

DEAD_RECKONING

The DeadReckon look ahead propagator projects the motion of the vehicle along a straight line, along the last velocity vector.

BALLISTIC

The Ballistic Propagator defines an elliptical path that begins and ends at the Earth’s surface. Specifying a fixed flight time, initial velocity or altitude can further refine the shape of the trajectory.

Import detail#

from ansys.stk.core.stkobjects import LookAheadPropagator