Update: May 27, 8:25 p.m. ET: Announcers on the SpaceX broadcast said Starship will break up above and crash into the planned landing zone in the Indian Ocean. They added that the Super Heavy booster ...

Abstract: Based on the quaternion description, a flight control scheme combining extended state observer (ESO) and nonlinear dynamic inversion (NDI) is developed in this work. The nonlinear model of ...