Aircraft

Claim 1

IN AN AIRCRAFT OF THE VERTICAL TAKE-OFF AND LANDING TYPE, WHEREIN VERTICAL LIFT AND FORWARD PROPULSION IS OBTAINED BY EFFLUX NOZZLES CAPABLE OF ORIENTATION BETWEEN VERTICAL AND HORIZONTAL POSITIONS, CONTROL MECHANISM FOR EFFECTING SUCH ORIENTATION, MEANS OPERABLE AS A RESULT OF MOVEMENT OF SAID CONTROL MECHANISM TO MOVE SAID NOZZLES FROM VERTICAL TO A HORIZONTAL POSITION TO PRODUCE A SLOW SPEED OF ORIENTATION, SAID MEANS BEING INOPERATIVE WHEN SAID CONTRL MECHANISM IS OPERATED TO MOVE SAID NOZZLES IN THE OPPOSITE DIRECTION OT ENSURE RAPID ORIENTATION OF SAID NOZZLES FROM A HORIZONTAL POSITION TO A VERTICAL POSITION, A CONTROL LEVER MOVEABLE IN EITHER DIRECTION ACCORDING TO THE REQUIRED DIRECTION OF ORIENTATION, A DASH-POT BROUGHT INTO OPERATION BY MOVEMENT OF THE LEVER WHEN THE LATTER IS MOVED TO GIVE A SLOW ORIENTATION, A GATE IN WHICH THE LEVER MOVES, THE GATE BEING CALIBRATED TO SHOW DIFFERENT ANGLES OF ORIENTATION OF THE NOZZLES AND A PRESELECTOR STOP IN THE GATE WHICH CAN BE SET TO LIMIT ANGULAR MOVEMENT OF THE LEVER IN THE DIRECTION WHICH WILL PRODUCE A QUICK ORIENTATION OF THE NOZZLES AND AN OVERRIDE AND FOLLOW UP LEVER WHICH IS OPERABLE IF REQUIRED TO INCREASE THE SPEED OF ORIENTATION OR FOR USE IN AN EMERGENCY IN THE EVENT OF THE DASH-POT NOT OPERATING EFFICIENTLY.