Rotary wing aircraft having autopiloting means
阅读：36发布：2021-03-01
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1. A FREE-FLYING, PILOTLESS HELICOPTER COMPRISING, IN COMBINATION: AN AIRFRAME, TWO SPACED AND SIDE BY SIDE LIFTING ROTORS ON SAID AIRFRAME, AERODYNAMIC MEANS CONTROLLING THE ATTITUDE OF THE AIRFRAME, SAID AERODYNAMIC MEANS INCLUDING MEANS FOR DIFFERENTIALLY VARYING THE COLLECTIVE PITCHES OF SAID ROTORS AND HAVING HINGED FLAP MEANS DISPOSED IN THE SLIP STREAM OF EACH OF SAID ROTORS, SAID FLAP MEANS BEING SUSPENDED PARALLEL TO THE PITCHING AXIS OF THE AIRFRAME, MEANS FOR VARYING THE ANGULAR ADJUSTMENT OF SAID HINGED FLAP MEANS, EACH OF SAID ROTORS INCLUDING A DRIVEN HUB HAVING A VERTICAL AXIS, RADIALLY EXTENING BLADES MOUNTED ON SAID HUB, SAID BLADES BEING ARRANGED TO SWEEP A CONSTANT PATH RELATIVELY TO SAID AXIS; AN OUTOPILOT SYSTEM, SAID AUTOPILOT SYSTEM INCLUDING TWO LINEAR ACCELEROMETERS, SAID ACCELEROMETERS BEING SENSITIVE TO, AND EMITTING OUTPUTS REPRESENTING THE RESULTANTS OF, THE LINEAR ACCELERATION OF THE AIRFRAME AND THE COMPONENT OF GRAVITY ACTING ALONG ONE AND THE OTHER RESPECTIVELY OF TWO ANGULARLY SPACED LINES NORMAL TO THE ROTOR AXIS AND FIXED IN THE AIRFRAME, SAID AUTOPILOT SYSTEM INCLUDING MEANS FOR RECEIVING REMOTELY GENERATED COMMAND SIGNALS AND EMITTING OUTPUTS REPRESENTING A HORIZONTAL VELOCITY OF SELECTED SPEED IN A SELECTED AZIMUTH OF THE AIRFRAME, AND MEANS FOR SUMMING AND RESOLVING ALL SAID OUTPUTS AND APPLYING THEIR RESULTANTS TO SAID AERODYNAMIC MEANS WHEREBY THE ATTITUDE OF SAID AIRFRAME IS ARRANGED TO LOCATE SAID ANGULARLY SPACED LINES INCLINED TO THE HORIZONTAL TO PRODUCE A HORIZONTAL VELOCITY OF THE SELECTED SPEED IN THE SELECTED AZIMUTH.
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