The invention discloses a dynamics high-precision
simulation method for a wide-envelope and strong-maneuver aircraft and belongs to the field of
aircraft dynamics and control. According to the method, a
rigid body elastic
coupling dynamics high-order model of the wide-envelope and strong-maneuver aircraft is established. According to a modeling process, only
small amplitude linear vibration assumption is taken into consideration; remarkable and quick time-varying
aerodynamic force and torque, engine thrust and torque, gravity, attitude strong maneuver, and a mutual
coupling influence between aerodynamic
rudder quick motion and structure
elastic vibration in the wide-envelope and strong-maneuver
flight process of the aircraft are taken into full consideration; and the model comprises comprehensive high-order nonlinear terms,
coupling influence items between
rigid body motion and
elastic vibration, and influence items of attitude maneuver and the aerodynamic
rudder quick motion on the
elastic vibration and attitudes. According to the high-order model, the real state of the wide-envelope and strong-maneuver aircraft can be truly reflected; through utilization of the high-order model for
simulation analysis, the design reasonability of the aircraft can be verified; and the
verification result is more accurate and reliable than that of a traditional model.