Fixed-Time Sliding Mode Control of a Thrust-Vectored Planar VTOL UAV With Strongly Coupled Dynamics. - Jhonatan F. Eulopa-Hernandez; Jairo Olguin-Roque; Diego Alfredo Padilla Pérez; Pablo-Alejandro Arizpe-Carreón; Carlos Couder-Castañeda (IEEE Access, 2026)