31results about How to "Take off and land smoothly" patented technology

The invention relates to an unmanned aerial vehicle take-off and landing platform which comprises a box body composed of a bottom plate, side plates and a top plate; the bottom plate and the side plates are hinged; the side plates are fixedly connected through buckles, and the side plates and the top plate are fixedly connected through buckles; a plurality of third springs are evenly distributed on the bottom plate, a supporting plate is fixed to the top ends of the third springs, a plurality of supporting rods are hinged to the side wall of the supporting plate, free ends of the supporting rods are connected with the bottom plate in a sliding mode, and the top face of the supporting plate is used for parking an unmanned aerial vehicle. Protection devices are arranged on the side plates. According to the unmanned aerial vehicle, the springs are arranged on the bottom plate and the side plates, so that a damping device can be formed, acting force caused by bumping and vibration can be offset in the transportation process, and safe transportation of the unmanned aerial vehicle is guaranteed.

The invention provides a rotor-type unmanned aerial vehicle automatically adjusting a gravity center after loading and an adjustment method. The rotor-type unmanned aerial vehicle includes a machine body provided with a rotor assembly, the bottom of the machine body is provided with a testing device for supporting the machine body to test the weight and the gravity center of the machine body and a translational mechanism connected with the machine body; the translational mechanism comprises a mobile output end for fixing a load. According to the rotor-type unmanned aerial vehicle automatically adjusting the gravity center and the adjustment method, a gravity center position of the unmanned aerial vehicle is controlled through installation of the testing device and the translational mechanism on the machine body, so that the unmanned aerial vehicle can perform smooth taking-off and landing and safe landing, and the security of the unmanned aerial vehicle is improved; and the adjustment method is simple in process, enables detection and adjustment to be carried out from time to time, and is applicable to a working condition that requires to frequently modify the machine body.

A double-duct UAV with double-motor horizontal cloth cooperative control, including double-duct, double-motor, and rudder surface components. Propellers on both sides, where the planes of the propeller rotation axes on both sides are parallel to but not coplanar with the plane where the dual motors are located; the rudder surface component is located under the duct, and the rudder surface is pushed and deflected by the rocker rod structure to control the attitude and direction of the drone , through the ESC to control the motor speed, adjust the lift force and roll attitude of the UAV, the ESC and the steering gear act synchronously, increase the power output of the dual motors, unify the speed, and make the dual motors correspond to them during the vertical take-off and landing of the UAV The synchronous belt, synchronous wheel, duct and rudder surface components work together to achieve stable take-off and landing and high-speed level sailing. The invention has a triangular symmetrical layout, good structure rigidity, high space utilization rate, double motors are placed horizontally and centrally, synchronous belts are used to cooperate to transmit power to the propeller, and the dual powers have a unified speed to increase the lift force and ensure the take-off and landing process of the drone. The take-off and landing process is stable. At the same time, there is a set of linkage rudder surfaces under the propeller duct on each side, which cooperate with the ESC to realize the pitch, yaw, and roll motion control of the whole machine.

The invention provides a double-duct tilt aircraft. The double-duct tilt aircraft comprises duct rotor seats, a machine body, duct rotors, flaps, driven synchronous pulleys, synchronous belts, a driving synchronous pulley, an undercarriage, a turbine, a main wing, a storage battery set, a cockpit, an electronic operating device, a hydraulic power unit, a servo motor, a worm, a worm support, driven bevel gears, driving bevel gear shafts, a kerosene reciprocating engine, first cranks, first hydraulic cylinders, second hydraulic cylinders and second cranks. The flying speed and posture of the double-duct tilt aircraft are controlled by the duct rotors, the flaps and the main wing jointly, so that the double-duct tilt aircraft has the characteristics of being large in lift force, smooth and steady in taking off and landing and high in air flying speed. The cockpit is arranged on utmost upper portion of the double-duct tilt aircraft, so that a pilot has a good sight range, and the operation of the double-duct tilt aircraft is greatly facilitated. The main wing can be driven by the servo motor to rotate by 90 degrees and keep parallel to the machine body when parked, so that space is saved, and traffic jam in a city is eased.

The invention belongs to the technical field of unmanned aerial vehicle auxiliary equipment, and particularly discloses a self-stabilized multi-unmanned aerial vehicle landing device based on a parallel four-bar mechanism for an unmanned boat platform. The self-stabilized multi-unmanned aerial vehicle landing device comprises an unmanned boat, a six-degree-of-freedom parallel platform is arranged on the unmanned boat, a multi-layer rotating platform matched with the six-degree-of-freedom parallel platform is arranged on the six-degree-of-freedom parallel platform, unmanned aerial vehicle fixing devices are correspondingly arranged on any platform of the multi-layer rotating platform, and unmanned aerial vehicles are arranged on the unmanned aerial vehicle fixing devices. According to the self-stabilized multi-unmanned aerial vehicle landing device, through matching of the six-degree-of-freedom parallel platform and the multi-layer rotating platform on the unmanned boat, the multi-layer rotating platform can be ensured to be always in a horizontal state, a plurality of unmanned aerial vehicles can be stared and stopped, then the unmanned aerial vehicles and the unmanned aerial vehicle fixing devices are matched, the action of quickly and smoothly taking off and landing on of the unmanned aerial vehicles on the unmanned boat is achieved, and unmanned aerial vehicle landing gears on the unmanned aerial vehicles play a role of increasing of unmanned aerial vehicles fixing.