Vtol aircraft having freely pivoted propulsion means

Claim 1

A FLYING MACHINE WITH A FIXED WING SYSTEM CAPABLE OF MANEUVERING DURING THE VARIOUS PHASES OF FLIGHT, VERTICAL, HOVERING, TRANSITORY AND HORIZONTAL, THE SAID FLYING MACHINE HAVING TWO IDENTICAL PROPULSION UNITS ARRANGED SYMMETRICALLY WITH RESPECT TO ITS LONGITUDINAL PLANE OF SYMMETRY, THE SAID PROPULSION UNITS BEING FREELY ANTICULATED ON A COMMON PIVOTAL AXIS PERPENDICULAR TO THE SAID PLANE OF SYMMETRY AND TO THE AXES OF THRUST OF THE SAID PROPULSION UNITS IN WHICH: AN ARRANGEMENT OF THE WHOLE OF THE MACHINE SUCH THAT SAID PIVOTAL AXIS IS LOCATED BEFORE THE INTAKE SIDE OF THE PROPULSION UNITS; AT LEAST ONE FLAP LOCATED IN THE DISCHARGE FLOW OF EACH OF THE PROPULSION UNITS, THE SAID FLAP BEING ARTICULATED ON THE AXIS WHICH IS PERPENDICULAR TO THE AXIS OF THRUST AND PARALLEL TO THE PIVOTAL AXIS OF THE PROPULSION UNIT; AND CONTROL MEANS FOR EACH OF THE PROPULSION UNITS, PERMITTING THE INCIDENCE OF THE SAID FLAP TO BE VARIED AT WILL WITH RESPECT TO THE DISCHARGE FLOW SO AS TO CAUSE THE PIVOTAL MOVEMENT OF THE CORRESPONDING UNIT BY AERODYNAMIC REACTION.