Translational motion control of vertical takeoff aircraft using nonlinear dynamic inversion

A nonlinear dynamic inversion (NDI) control law is developed for the translational modes required to maneuver vertical/short takeoff and landing (V/STOL) aircraft in hover and forward flight. The dynamical responses that are ultimately decoupled and prescribed by these control laws determine the forces required to achieve commanded translational acceleration, velocities, and position. The required forces are generated by three dimensional thrust vectoring in the x-z plane with lateral translation motion control via pitch and bank angles are presented. Application of the translational motion control is demonstrated using off-line simulation of a V/STOL aircraft.