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Electromagnet electromagnetic ultrasonic thickness measuring method and system based on anti-collision unmanned aerial vehicle
PendingCN121540096AAnalysing solids using sonic/ultrasonic/infrasonic wavesUsing subsonic/sonic/ultrasonic vibration meansUltrasonic thickness measurementFrequency modulation
The invention discloses an electromagnet electromagnetic ultrasonic thickness measurement method and system based on an anti-collision unmanned aerial vehicle, and relates to the field of nondestructive testing, and the method comprises the steps: obtaining the coordinates of a preset detection point, controlling the flight path of the unmanned aerial vehicle, and determining the safety position information of the unmanned aerial vehicle located near the preset detection point; the motion of the multi-degree-of-freedom mechanical arm is controlled through a servo motor and an encoder, contact impact is reduced through a buffer mechanism, and attitude information of the electromagnetic ultrasonic sensor unit aligned with the surface of the to-be-detected object is determined; the magnetic attraction force is adjusted in real time through a closed-loop feedback system, and a linear frequency modulation pulse is adopted as an excitation signal to obtain an echo signal containing acoustic-electromagnetic coupling interference; acoustic-electromagnetic coupling interference is corrected and processed in an auxiliary mode through a multi-mode signal separation algorithm and machine learning, and final thickness data is obtained; and transmitting the final thickness data to a cloud platform, and providing a data visualization interface and an alarm function on the cloud platform. According to the invention, accurate thickness detection and remote monitoring of a complex structure material can be realized.
Owner:CHINA SPECIAL EQUIP INSPECTION & RES INST
Unmanned aerial vehicle vibration reduction support for geographic surveying and mapping
An unmanned aerial vehicle vibration reduction support for geographical surveying and mapping relates to the technical field of geographical surveying and mapping unmanned aerial vehicles and comprises an unmanned aerial vehicle body, a surveying and mapping assembly is arranged on the unmanned aerial vehicle body, four connecting arms are evenly arranged on the side face, propellers are arranged at the tops of the connecting arms, and supporting legs are arranged at the bottoms of the connecting arms; the lower bottoms of the supporting legs are fixedly connected with a buffering support. The buffering support comprises an outer cylinder, a supporting rod and a footstand. The top of the outer cylinder is fixedly connected with the supporting leg, the lower portion of the outer cylinder is provided with an opening, the upper end of the supporting rod extends into the outer cylinder along the opening, the lower end of the supporting rod is connected with the footstand, the portion, extending into the outer cylinder, of the supporting rod is sleeved with a piston, the outer ring of the piston is in sliding fit with the inner wall of the outer cylinder, and the space between the top face of the piston and the outer cylinder is filled with hydraulic oil. The hydraulic oil communicates with a hydraulic oil tank located on the unmanned aerial vehicle body through the oil hole. A compression spring is arranged between the top face of the piston and the top of the inner cavity of the outer cylinder. And the speed that the compression spring is extruded or rebounded is reduced under the action of the hydraulic oil, so that the effect of stabilizing vibration reduction is achieved.
Owner:惠民县自然资源和规划局石庙管理所
A multi-functional drone
This invention relates to the field of unmanned aerial vehicle (UAV) technology and discloses a multi-functional UAV. The UAV includes a stabilizing support mechanism installed at the bottom of each of its four rotor arms. This stabilizing support mechanism can stably support the UAV in soft sand. An auxiliary mechanism is rotatably connected to the top of each stabilizing support mechanism. This auxiliary mechanism assists in supporting the stabilizing support mechanism and improves its cushioning capacity. A secondary support mechanism is detachably connected to the bottom of the UAV. This secondary support mechanism protects the bottom of the UAV and prevents it from tipping over on uneven ground. Through the cooperation of the stabilizing support mechanism and the auxiliary mechanism, the UAV can utilize its own gravity to stabilize itself in sandy or soft soil terrain, preventing it from sinking or tipping over. Furthermore, the structure is purely mechanical, simple, and low-cost, and is relatively reliable in extreme environments.
Owner:SHENZHEN XINJIASHENG PRECISION TECHNOLOGY CO LTD
Unmanned aerial vehicle capable of landing and buffering
The invention relates to the technical field of unmanned aerial vehicles, and particularly discloses an unmanned aerial vehicle capable of landing and buffering, which comprises a fuselage shell, connecting arms are fixedly connected to the opposite angles of the side surfaces of the fuselage shell, and fan blade protection rings are fixedly connected to the ends, away from the fuselage shell, of the connecting arms. A driving motor is fixedly connected to the inner wall of the fan blade protection ring through a support, a driving shaft of the driving motor is fixedly connected with flying fan blades, a mounting frame is fixedly connected to the bottom of the fuselage shell, a damping device is fixedly connected to the bottom of the inner wall of the mounting frame, and a buffering mechanism is fixedly connected to the end, away from the supporting frame, of a fixing rod. According to the unmanned aerial vehicle capable of landing and buffering, the buffering mechanism is arranged, so that the impact force generated when the unmanned aerial vehicle descends can be buffered, and the damping device is arranged, so that the buffered vehicle body can be further damped; damage of parts in the unmanned aerial vehicle caused by violent vibration during descending is avoided.
Owner:SHENZHEN SILVER WINGED BIRD TECHNOLOGY CO LTD
Unmanned aerial vehicle self-adaptive landing system and control method
The invention discloses an unmanned aerial vehicle self-adaptive landing system and a control method. The system includes a flexible deformable landing gear body, a sensor module, a fluid control module, and a control unit. The undercarriage body contains a flexible chamber filled with a controllable fluid. During landing, the control unit instructs the fluid control module to dynamically adjust the fluid in the chamber based on pressure data monitored by the sensor module, so that the undercarriage main body actively deforms to adapt to an irregular ground profile. Point contact is converted into surface contact, so that landing impact load is effectively dispersed, and stress concentration is avoided; and through an automatic attitude leveling function after landing, the stability and safety of landing of the unmanned aerial vehicle in complex terrains are remarkably improved, and the operation range and autonomy of the unmanned aerial vehicle are expanded.
Owner:BEIJING YUNDINGAN TECHNOLOGY CO LTD
Unmanned aerial vehicle mounting device
The invention discloses an unmanned aerial vehicle mounting device, and belongs to the technical field of unmanned aerial vehicles. In order to solve the problems that an existing product is inconvenient to unload, and potential safety hazards exist when goods are hoisted, the following technical scheme is provided, the unmanned aerial vehicle comprises an unmanned aerial vehicle body and a hanging part arranged on the unmanned aerial vehicle body, the hanging part comprises two supporting mechanisms and a suspension mechanism, the supporting mechanisms are arranged on the unmanned aerial vehicle body, and the suspension mechanism is arranged on the unmanned aerial vehicle body. And the left and right parts are symmetrically distributed below the unmanned aerial vehicle main body. According to the unmanned aerial vehicle, the mounting part is arranged to replace an existing support, stable suspension of goods is achieved under the condition that safe take-off and landing of the unmanned aerial vehicle body are guaranteed, and under the condition that a suspension mechanism in the mounting part is matched with a supporting mechanism, lifting of the unmanned aerial vehicle body can achieve locking and releasing of a suspension rope; and the supporting mechanism is further internally provided with a side position restraining assembly, so that the suspended goods can be subjected to side position restraining when the unmanned aerial vehicle main body runs.
Owner:GANSU XIANGCHENG AVIATION TECHNOLOGY CO LTD
Unmanned aerial vehicle with protection structure
The invention discloses an unmanned aerial vehicle with a protection structure, and relates to the technical field of unmanned aerial vehicles. The unmanned aerial vehicle with the protection structure comprises a vehicle body, vehicle arms are installed on the surface of the vehicle body, propeller protectors are installed on the surfaces of the vehicle arms, buffers are arranged at the bottoms of the propeller protectors, and anti-collision devices are installed at the bottoms of the vehicle arms, so that the purpose of providing protection and buffering when the unmanned aerial vehicle is accidentally collided is achieved; when the equipment is impacted, impact is dispersed through elastic deformation of the support structure, linkage energy absorption of related parts is matched, damage to the propeller due to local stress concentration is avoided, impact force can be relieved in a multi-layer mode through the synergistic effect of gas compression, spring contraction and part sliding in the face of vertical impact in the take-off and landing stage, impact damage to the machine body and the machine arms is reduced, and the service life of the equipment is prolonged. The deformation energy absorption of the anti-collision structure, the residual impact transmission unloading force and the assistance of the reset component fully weaken the collision energy and avoid the damage of the core structure.
Owner:SHENZHEN SILVER WINGED BIRD TECHNOLOGY CO LTD
Buffer device for landing of unmanned aerial vehicle
This invention discloses a landing buffer device for unmanned aerial vehicles (UAVs), relating to the field of aviation equipment technology. By integrating the roller body and the sliding plate as two grounding structures onto the landing gear, the device can quickly switch operating modes according to ground conditions through the linkage of the piston cylinder and piston rod. On flat ground, the roller is used first to reduce gliding resistance, while on muddy or slippery ground, the sliding plate is used for grounding, effectively preventing roller jamming and enhancing all-terrain adaptability and landing safety. Simultaneously, the mechanical buffer composed of a second and third spring, combined with the hydraulic damping buffer composed of buffer components, forms a highly efficient double-layer energy-absorbing buffer structure, which to a certain extent alleviates the damage to the aircraft and equipment caused by landing impact, thus improving the landing safety of the UAV.
Owner:JIANGSU HANGYING INTELLIGENT TECH CO LTD
Unmanned aerial vehicle flight anti-collision device
The utility model relates to the technical field of unmanned aerial vehicles, in particular to an unmanned aerial vehicle flight anti-collision device which comprises an unmanned aerial vehicle body, a protection assembly is arranged at the top of the unmanned aerial vehicle body, and a cushioning assembly is arranged at the bottom of the protection assembly. Meanwhile, the paddles are located in the holes, so that the safety is improved, meanwhile, a protection rod is clamped between a first protection plate and a second protection plate, the stability between the first protection plate and the second protection plate is improved, the device can be disassembled through a first fixing bolt and a second fixing bolt, and then the practicability is improved; and after the unmanned aerial vehicle body lands, due to the fact that a hinge rod is hinged between a second protection plate and a supporting seat, a moving block can abut against a damping spring, then pressure is buffered, meanwhile, a damping pad is arranged at the bottom of the supporting seat, and the safety after landing is improved.
Owner:YUNNAN JUNYING AVIATION TECH CO LTD
Unified electric control method and device for turning and shimmy damping of front wheel of airplane
The invention provides a unified electric control method and device for turning and shimmy damping of a front wheel of an airplane, and solves the technical problems of high complexity and poor adaptability. The device comprises a voltage sensor used for collecting a bus voltage value of a DC power supply loop of an inverter; the power switch device is used for controlling the switch-in and switch-out of the energy consumption resistor R1 in the power supply loop; the relay is used for controlling the on-off of a power supply loop between the direct-current power supply and the inverter; and the logic control module is used for responding to a control requirement, outputting a PWM signal according to a preset control strategy of the corresponding control mode and performing power supply loop control. A turning / shimmy damping unified electric control framework based on electric control is formed to be matched with a unified electric control strategy, a hydraulic shimmy damping device is simplified, and meanwhile the weight and cost of an undercarriage are reduced. Through control mode switching, a PWM technology is adopted to drive the front wheel to actively steer in a control state, and shimmy damping is provided in a non-control state.
Owner:BEIJING INST OF SPECIALIZED MACHINERY
Birotor disc type electromagnetic damping shimmy damper for nose landing gear of airplane
The invention discloses a magnetic pole rotating type electromagnetic damping shimmy damper for a nose landing gear of an aircraft, and belongs to the technical field of vibration control of landing gears of aircrafts. The shimmy damper comprises a first stator disc and a second stator disc which are symmetrically arranged, a rotor disc, a plurality of pairs of permanent magnetic poles, a rotating shaft, a top cover, a base and a bearing. The rotor disc is in interference fit with the rotating shaft through the central square hole, the magnetic poles are circumferentially, uniformly and fixedly arranged on two sides of the rotor disc, and the magnetizing directions of the adjacent magnetic poles are opposite. An adjustable air gap is reserved between the stator disc and the magnetic pole. During working, shimmy motion of the nose landing gear is converted into rotation of the rotating shaft through the transmission mechanism, the rotor disc and the magnetic poles are driven to rotate, the stator disc cuts magnetic induction lines to generate eddy currents, damping torque is formed, kinetic energy is converted into heat energy, and efficient shimmy reduction is achieved. External power supply is not needed, the structure is compact, the weight is light, the problems of abrasion and maintenance of a traditional friction or oil damper are solved, and the damper is particularly suitable for a modern aircraft landing gear system.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
Unmanned aerial vehicle with buffer structure
Owner:QIHANG AEROSPACE TECHNOLOGY (NINGBO) CO LTD
Vehicle wheel comprising a drive device and a braking device
A wheel (1) rotatably mounted on an axle and comprising: - a rim (2) connected by a web (3) to a hub (4) pivotably received on the axle, and delimiting with the hub an annular space; - a radial flux electric motor (10) comprising a first stator (11) and a first rotor (12) which are arranged to generate a torque for the rotational driving of the wheel; - a magnetic brake (20) comprising a second stator (21) and a second rotor (22) which are arranged to generate a torque for the braking of the wheel, the electric motor and the magnetic brake extending one inside the other inside the annular space, of the first rotor and the second rotor one being adjacent to the rim and of the the first rotor and the second rotor the other being adjacent to the hub, the first stator and the second stator extending between the first rotor and the second rotor.
Owner:SAFRAN LANDING SYSTEMS
Unmanned aerial vehicle for surveying and mapping geographic information through oblique photography
The invention discloses an oblique photography geographic information surveying and mapping unmanned aerial vehicle which structurally comprises a protection device, a support, a supporting device, propellers and a vehicle body, the support installed on the vehicle body is connected with the supporting device, the propellers arranged at the upper end of the supporting device are matched with the vehicle body for flight surveying and mapping, and the protection device is installed at the bottom of the vehicle body. The instruction receiver in the unmanned aerial vehicle body transmits an instruction, the instruction receiver receives the instruction and then transmits the instruction to the processor, the processor synchronously starts the motor to drive the propeller to rotate, the device lifts off, the flight direction of the unmanned aerial vehicle is controlled through the transmitted instruction, and data is transmitted to the processor for processing through cooperation of the camera. When the machine body lands on the ground after surveying and mapping are completed, the base can directly make contact with the ground, then the base transmits landing impact force to the buffer assembly in the connecting cylinder, the buffer assembly is matched with the connecting cylinder to disperse the impact force, and the landing impact force directly acting on the machine body is effectively reduced.
Owner:王羽楠
Take-off and landing protection equipment for unmanned aerial vehicle
ActiveCN224225317Uavoid damageImprove buffer protection safetyAircraft landing aidsAlighting gearUncrewed vehicleMechanical engineering
The utility model relates to the technical field of takeoff and landing protection equipment, and discloses takeoff and landing protection equipment for an unmanned aerial vehicle, which comprises an unmanned aerial vehicle body, and a display connection signal screen is fixedly mounted on the outer wall of the unmanned aerial vehicle body. The foldable light and thin mounting plate is rapidly folded and unfolded through the rotating hinge and the small hydraulic push rod, in the flight state, the mounting plate is folded and tightly attached to the fuselage, air resistance is effectively reduced, the flight efficiency is improved, before landing, the hydraulic push rod rapidly pushes the mounting plate to be unfolded to the horizontal position, and the supporting area is enlarged; the unmanned aerial vehicle is in direct contact with the ground in cooperation with an anti-skid balancing weight, the friction force between the unmanned aerial vehicle and the ground is increased, the unmanned aerial vehicle is effectively prevented from sliding or rollover after landing, meanwhile, an inflation pump is arranged in an inflation box to inflate a buffering air bag, a flexible protection layer surrounding the unmanned aerial vehicle is formed, falling impact is effectively relieved, and the unmanned aerial vehicle is protected from falling. And the effect of improving the protection safety is achieved.
Owner:CHINA AGRI UNIV
Unmanned aerial vehicle-mounted radar hanger structure with damping function
ActiveCN224075781UUniform supportUniform cushioningNon-rotating vibration suppressionAlighting gearMarine engineeringDamping function
The utility model discloses an unmanned aerial vehicle-mounted radar hanger structure with a damping function, which relates to the technical field of unmanned aerial vehicles and comprises an unmanned aerial vehicle body, a base net rack and a pull net rack. The base net rack is connected to the bottom surface of the unmanned aerial vehicle body through bolts, and the lower part of the base net rack is provided with a sunken upper mounting groove; the pull net rack is arranged below the base net rack, the edge of the pull net rack is connected with the base net rack through a plurality of elastic connecting pieces, the upper portion of the pull net rack is provided with a sunken lower installation groove, and the lower installation groove corresponds to the upper installation groove and is used for being connected with the airborne radar in a clamped mode. Through the elastic connecting pieces between the base net rack and the towing net rack and the elastic supporting pieces on the towing net rack, vibration and impact generated in the flying process of the unmanned aerial vehicle can be effectively absorbed and buffered, precise equipment such as airborne radar can be protected, the performance of the unmanned aerial vehicle is improved, and the service life of the unmanned aerial vehicle is prolonged.
Owner:NO 15 INST OF CHINA ELECTRONICS TECH GRP
Unmanned aerial vehicle with buffer bracket
ActiveCN224197998UWill not affect the camera rangeGuaranteed camera effectAlighting gearStructural engineeringMechanical engineering
The unmanned aerial vehicle comprises an unmanned aerial vehicle body provided with propellers, containing grooves are formed in the two sides of the bottom of the unmanned aerial vehicle body, sliding blocks are arranged in the containing grooves in a sliding mode, and mounting blocks are arranged at the bottoms of the sliding blocks; a first supporting rod and a second supporting rod are rotationally arranged on the two sides of the mounting block correspondingly. A supporting block is arranged between the first supporting rod and the second supporting rod, connecting rods are rotationally arranged on the two sides of the supporting block, and one connecting rod is rotationally connected with the side face of the first supporting rod. The other connecting rod is rotationally connected with the side surface of the second supporting rod; electric telescopic rods are arranged at the two ends in the containing groove. A sliding rod is arranged at the top of the supporting block, extends into the containing groove and is connected with the output end of the electric telescopic rod. The unmanned aerial vehicle has the beneficial effects that after the unmanned aerial vehicle takes off, the electric telescopic rod drives the sliding block to slide into the containing groove, the first supporting rod and the second supporting rod are in the vertical state, at the moment, the bottoms of the first supporting rod and the second supporting rod are higher than the camera, and the camera shooting range is not affected.
Owner:QINGDAO SMART COMMANDER TECH DEV CO LTD
Unmanned aerial vehicle structure with buffer protection structure
Owner:NANTONG HISEN UAV TECH CO LTD
Unmanned aerial vehicle inspection device
The utility model discloses an unmanned aerial vehicle inspection device which comprises an unmanned aerial vehicle body, a shell, a driving mechanism and a swing mechanism, the shell is connected with the bottom face of the unmanned aerial vehicle body, mounting shafts are arranged on the two sides of the bottom face of the shell, the shell is hinged to two arc-shaped protective covers through the two mounting shafts respectively, a mounting shell is arranged on one side of the shell, and the driving mechanism is arranged on the mounting shell. The driving mechanism is arranged in the shell and penetrates through the mounting shell to be connected with the two mounting shafts, a first electric push rod is arranged on the top wall of the shell, the piston end of the first electric push rod is connected with a protective shell, the swing mechanism is arranged in the protective shell and penetrates through the protective shell to be connected with a swing plate, and the swing plate is connected with a camera. Therefore, the camera can be effectively protected in severe weather, so that the camera is prevented from being influenced by external factors such as rainwater and snowflakes, and the service life of the camera is effectively prolonged.
Owner:XUZHOU ZHIHANG INTELLIGENT TECH CO LTD
Unmanned aerial vehicle landing gear based on terrain self-adaption and unmanned aerial vehicle
The invention relates to the technical field of unmanned aerial vehicles, in particular to an unmanned aerial vehicle undercarriage based on terrain self-adaption and an unmanned aerial vehicle. The unmanned aerial vehicle undercarriage comprises a mounting frame, a first self-adaptive mechanism and at least one pair of second self-adaptive mechanisms. The first self-adaptive mechanism comprises a first connecting rod and a first frame. The second self-adaptive mechanism comprises two fourth connecting rods and two bionic mechanical legs. Each bionic mechanical leg is hinged to the ends of the two fourth connecting rods, then a second parallelogram-shaped frame is defined, and the plane where the second frame is located is perpendicular to the plane where the first frame is located. The bionic mechanical legs are used for making contact with the ground and supporting the unmanned aerial vehicle when the unmanned aerial vehicle lands, the height difference of the bionic mechanical legs in the front-back direction is subjected to self-adaptive compensation through the form change of the first frame, and the height difference of the bionic mechanical legs in the left-right direction is subjected to self-adaptive compensation through the form change of the second frame. Therefore, the unmanned aerial vehicle landing gear provided by the scheme can stably land in a complex terrain in which height differences exist in different directions at the same time.
Owner:HEFEI UNIV OF TECH
Eddy current magnetic braking device, braked vehicle wheel and aircraft landing gear and aircraft provided with such a wheel
The invention relates to a magnetic braking device for a vehicle wheel, the device comprising at least one stator element (2) arranged so as to be rotatably connected to a portion of the vehicle supporting the wheel, a rotor element (3) arranged so as to be rotationally connected to the wheel, magnets for producing, between these elements, a magnetic flux capable of generating eddy currents in one of the elements when the wheel rotates and a braking control unit (11) that receives, as input, a braking command to apply a braking force according to the braking command. The magnets comprise at least one electromagnet (9) and the device comprises at least one anti-locking control unit (16) that receives, as input, a vehicle speed signal and a wheel rotational speed signal and provides, as output, a control signal of the electromagnet according to a comparison of speeds from the signals received as input. The invention also relates to an aircraft wheel and a landing gear comprising such a device.
Owner:SAFRAN LANDING SYSTEMS
E-commerce delivery long-endurance unmanned aerial vehicle applying solar auxiliary power supply
PendingCN121341462APhotovoltaic supportsBatteries circuit arrangementsUncrewed vehicleElectric machinery
The invention relates to the technical field of unmanned aerial vehicles, in particular to an e-commerce delivery long-endurance unmanned aerial vehicle applying solar energy to assist power supply, which comprises an unmanned aerial vehicle body, auxiliary devices are arranged at the top and the bottom of the unmanned aerial vehicle body, and each auxiliary device comprises a power supply mechanism, a transportation mechanism and a buffer mechanism. According to the e-commerce delivery long-endurance unmanned aerial vehicle applying solar energy to assist power supply, the power supply mechanism is arranged, a motor is started to drive an output shaft to rotate, and a belt and a belt pulley are matched for transmission, so that a connecting rod drives a second gear to rotate to be meshed with a first gear, and a rotating shaft drives a rotating block and a second solar panel to rotate; unfolding and folding of the second solar panel are achieved, when sunlight is sufficient, unfolding of the second solar panel can be achieved, the cruising ability of the unmanned aerial vehicle body is improved, when sunlight is poor or at night, the second solar panel can be folded, wind resistance generated when the unmanned aerial vehicle body flies by the second solar panel is reduced, and the use flexibility of the power supply mechanism is improved; and the cruising ability of the unmanned aerial vehicle is improved.
Owner:CHANGZHOU HUIZHONG INFORMATION TECHNOLOGY CO LTD
Medium-sized unmanned aerial vehicle with stable landing function
The utility model belongs to the technical field of medium-sized unmanned aerial vehicles, and particularly relates to a medium-sized unmanned aerial vehicle with a stable landing function, which comprises an unmanned aerial vehicle body, four connecting frames are annularly distributed on the outer wall of the unmanned aerial vehicle body, propellers are mounted at one ends of the four connecting frames, and two racks are mounted at the bottom of the unmanned aerial vehicle body. Wear-resisting plates are installed at the bottoms of the two racks, and anti-skid lines are arranged at the bottoms of the wear-resisting plates. The shifting block shifts the movable block to drive the limiting clamping pin to contract, then the positioning blocks penetrate through the bottom of the machine frame and are located at the two ends of the installation base at the moment, then the shifting block is loosened, and the limiting clamping pin can be popped out and inserted into the limiting clamping groove under the action of the first spring. And the friction effect of the bottom of the rack can be improved through the wear-resisting plate and the anti-skid lines, and then the stability of the medium-sized unmanned aerial vehicle during landing is improved.
Owner:ANHUI ZHONGXINHANG TECHNOLOGY DEVELOPMENT CO LTD
Aircraft ground coordinated turning system and sliding mode control method and system thereof
This application addresses the problems of large runway space occupation and potential airport traffic congestion during turning in current aircraft ground coordinated turning control methods. It proposes an aircraft ground coordinated turning system, and a sliding mode control method and system thereof. Based on real-time parameters of an aircraft, the state of the aircraft ground coordinated turning system is controlled on a composite sliding mode surface for nose wheel-main wheel coordinated turning through a nose wheel-main wheel coordinated turning control law. Specifically, a model for the aircraft ground coordinated turning system is developed. Aiming at the control problem in the traditional aircraft ground turning phase, and considering the problems such as oversteering of the nose landing gear and a large turning radius in the traditional nose wheel steering technology. Through coordinated turning of the nose wheel and main wheels, the turning radius is effectively reduced.
Owner:NINGBO INST OF MATERIALS TECH & ENG CHINESE ACAD OF SCI +1
Obstacle avoidance buffer protection mechanism for unmanned aerial vehicle
ActiveCN224375930UEnhance passive buffering capabilitiesImproved passive buffering capacityAlighting gear
This utility model discloses a drone obstacle avoidance and buffer protection mechanism, including a cover assembly and a buffer assembly, the buffer assembly being detachably embedded within the cover assembly. The cover assembly includes a cover and a first wrapping body and a second wrapping body externally placed on the cover, the first wrapping body and the second wrapping body respectively covering a portion of the cover, the first wrapping body and the second wrapping body being fixedly connected to the cover body, and a gap being present between the first wrapping body and the second wrapping body. The buffer assembly includes a buffer layer, a first interlayer and a second interlayer, the buffer layer being built into the cover body, and the buffer layer having an inner cavity. The drone obstacle avoidance and buffer protection mechanism disclosed in this utility model has the advantage that it can be added as needed to the end of existing drone support legs, enhancing the passive buffering capability of existing drones in high-risk operating environments.
Owner:ZHEJIANG JIACHUANG AEROSPACE POWER TECHNOLOGY CO LTD
An unmanned aerial vehicle precise alignment device
The application provides a precise alignment device for unmanned aerial vehicle, and relates to the technical field of aircraft landing gear, which comprises an unmanned aerial vehicle body, a landing gear and a charging rod, a plurality of adaptive buffer assemblies are installed on the edge of the landing gear, each assembly comprises a hinged seat, a supporting leg and an adjusting arm driven by a motor, forms a multi-bionic leg structure, can be independently adjusted according to the topography, realizes stable and horizontal landing, and the landing gear is also provided with an alignment assembly, which comprises a fixed seat, a floating seat and a lifting seat, the floating seat realizes horizontal universal movement through a connecting rod mechanism driven by a motor, the lifting seat realizes vertical lifting through an electric telescopic rod, and finally drives the charging rod at the bottom to make position fine adjustment, the application solves the problem that the traditional fixed landing gear cannot adapt to the terrain, leading to inaccurate docking, realizes stable landing of the unmanned aerial vehicle on the complex ground and high-precision automatic alignment of the charging rod, and improves the operation efficiency and reliability.
Owner:JIANGSU HANGYING INTELLIGENT TECH CO LTD
Shock absorption undercarriage of surveying and mapping unmanned aerial vehicle for surveying and mapping geographic information
The invention provides a shock-absorbing undercarriage of a surveying and mapping unmanned aerial vehicle for surveying and mapping geographic information, the shock-absorbing undercarriage structurally comprises a connecting block, a reinforcing block, a bottom plate, a joining column and a shock-absorbing structure, and the connecting block and the reinforcing block are in spacing fit and are mounted on the surface of the bottom plate; on the basis of four sets of shock absorption structures set by the two connecting columns, after the anti-skid structures make direct contact with the ground, generated falling impact force is conducted upwards to enter the positions of the shock isolators, and the buffer columns of the shock isolators can absorb and relieve the impact force according to the rubber materials of the buffer columns; meanwhile, a buffer body of an internal adjusting groove can enable a connecting block to press downwards towards the interior of a buffer column according to the characteristics of a spring, so that secondary damping can be achieved, the stable falling effect of the unmanned aerial vehicle can be achieved, the damping characteristic is formed, and falling impact force is prevented from directly affecting key components of the unmanned aerial vehicle; therefore, the takeoff and landing stability of the unmanned aerial vehicle can be improved, and the characteristic effect of damping takeoff and landing can be met.
Owner:SHANDONG JIANZHU UNIV
Flight vehicle
[Problem] To improve the amount of impact reduction when a flight vehicle comes in contact with a structure while minimizing an increase in weight. [Solution] Provided is a flight vehicle comprising multiple propellers 110, a main body 50, and contact support members 130, wherein: the contact support member 130 has a pivot shaft part disposed on a main body-side end part and a long member pivotable about the pivot shaft part; and when a state where no load is applied against the contact support member is defined as a first state, and a state where the contact support member has pivoted outward to the maximum extent from inner side due to the pivot shaft part when viewed from the main body side as a result of a load applied against the contact support member is defined as a second state, then an effective length, that is, the difference between a distance between both ends of the contact support member in a vertical direction when in the first state and a distance between the ends of the contact support member in the vertical direction when in the second state, is a half of the diameter of one of the multiple propellers or greater.
Advanced sensor integration for enhancing aircraft tugging safety
A system and method for enhancing aircraft tugging safety is disclosed. The system may include a plurality of sensors mounted at various locations of an aircraft configured to sense the proximity of objects. It may also include a controller with processors to process sensor data and generate proximity information, and a proximity alert indicator with multiple proximity indication lights in vertical columns configured to activate based on the proximity information.
Owner:ROCKWELL COLLINS INC