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Anti-drag deicing structure of ice surface rescue unmanned aerial vehicle and ice surface rescue unmanned aerial vehicle
The invention relates to a drag reduction and deicing structure of an ice surface rescue unmanned aerial vehicle and the ice surface rescue unmanned aerial vehicle, and discloses a deicing structure which is used for cleaning broken ice on an ice surface or a water surface through cooperation of an ice breaking cone and snow removing sawteeth, can reduce the sliding resistance of the unmanned aerial vehicle and improves the ice surface rescue efficiency. The ice breaking machine is characterized by being composed of a machine body, a machine frame, a machine frame head, a machine frame tail, a machine frame middle part, an ice breaking plate, an ice breaking cone, a hanging plate, an air cylinder, a fixing plate and a fixing block, the machine frame comprises the machine frame head, the machine frame tail and the machine frame middle part, the two ends of the machine frame middle part are correspondingly arranged at one end of the machine frame head and one end of the machine frame tail respectively, and the machine frame is arranged on the top face of the machine body. The machine body is of a hollow structure, the length of the machine body is smaller than that of the machine frame, the width of the machine body is smaller than that of the machine frame, fixing plates are correspondingly arranged on the two side faces of the machine body respectively, fixing blocks are correspondingly arranged on the two sides of the bottom face of the tail of the machine frame respectively, and one end of a hanging plate is arranged on the bottom faces of the fixing blocks.
Owner:XUZHOU BLUE LAKE INFORMATION TECH CO LTD
Utilizing multi-directional energy-absorbing landing gear for vertical takeoff and landing
An unmanned aerial vehicle (UAV) includes a UAV body constructed and arranged to carry a payload, a set of UAV wings coupled with the UAV body, and a set of undercarriage apparatus coupled with at least one of the UAV body and the set of UAV wings. The set of UAV wings is constructed and arranged to provide lift to the UAV. At least one undercarriage apparatus of the set of undercarriage apparatus includes an elastomeric vehicle mount, a leg, and a coupling constructed and arranged to couple the leg with the elastomeric vehicle mount. The elastomeric vehicle mount is constructed and arranged to absorb energy provided from the leg through the coupling.
Owner:TEXTRON SYSTEMS CORP
flying object
The present invention provides landing gear that reduces the effects of wind from a predetermined direction on the landing gear during flight, thereby improving fuel efficiency and stability, and reducing the impact during landing. [Solution] The aircraft in the present invention is equipped with landing gear having a contact surface, wherein the contact surface has a shape that reduces drag during travel compared to when landing. The shape of the contact surface is substantially airfoil in the longitudinal direction of the aircraft, and the angle of attack of the contact surface decreases during travel compared to when landing. The shape of the contact surface is inverted airfoil in the longitudinal direction of the aircraft, and the angle of attack of the contact surface decreases during travel compared to when landing. Multiple landing gears are provided, and the contact surface of the above shape is provided only on the landing gear on the front side of the aircraft. The landing gear is connected to the contact surface and is equipped with an intermediate member that extends at least vertically, and the structure of the contact surface is more fragile than the intermediate member.
Owner:AERONEXT INC
Snow accumulation prevention structure of ice surface rescue unmanned aerial vehicle and ice surface rescue unmanned aerial vehicle
The invention relates to an ice surface rescue unmanned aerial vehicle accumulated snow prevention structure and an ice surface rescue unmanned aerial vehicle, and discloses the snow prevention structure which can guide accumulated snow or crushed ice through cooperation of a conical top and an inclined-plane-shaped intercepting net, reduce attachment and accumulation of the accumulated snow or the crushed ice on the intercepting net, reduce abrasion of flying fan blades and improve the ice surface rescue efficiency. The device is characterized in that the device is composed of rack wings, air guide through holes, a conical top, inclined supporting rods, an intercepting net, a ring bottom, threads, thread grooves and fixing rings, the rack wings are correspondingly provided with the air guide through holes, the top faces of the rack wings are correspondingly provided with the fixing rings, the edges of the inner side faces of the fixing rings are connected with the edges of the air guide through holes, and the conical top is provided with the inclined supporting rods. A threaded groove is formed in the side face of the fixing ring, threads are formed in the inner side face of the ring bottom, the threads correspond to the threaded groove, the inner side face of the ring bottom is in threaded connection with the side face of the fixing ring in the mode that the threads are matched with the threaded groove, and the conical top is located over the air guide through hole.
Owner:XUZHOU BLUE LAKE INFORMATION TECH CO LTD
Ice surface rescue unmanned aerial vehicle supporting and positioning structure and ice surface rescue unmanned aerial vehicle
According to the ice surface rescue unmanned aerial vehicle supporting and positioning structure and the ice surface rescue unmanned aerial vehicle, a rotating motor drives a triangular wheel to rotate, so that the unmanned aerial vehicle can rapidly reach the water surface position where a person falling into water is located, and meanwhile slipping and rollover of the unmanned aerial vehicle on the ice surface and deviation of the unmanned aerial vehicle from a preset return route are reduced; and the ice surface rescue efficiency is improved through the position adjusting structure. The device is characterized in that the device is composed of a device body, a sliding plate, a sliding plate groove, a second screw, a motor containing groove, triangular wheels, a supporting shell, a fourth rotating shaft and a rotating motor, the sliding plate comprises two vertical sliding plates and two transverse sliding plates, the motor containing groove is formed in the middle of the device body, and the length of the motor containing groove is equal to the width of the device body; the motor containing groove is parallel to the transverse sliding plates and located between the two transverse sliding plates, one ends of supporting shells are correspondingly arranged on the two sides of the bottom of the motor containing groove respectively, and rotating motors are correspondingly arranged on the side faces of the supporting shells respectively.
Owner:XUZHOU BLUE LAKE INFORMATION TECH CO LTD
Utilizing multi-directional energy-absorbing landing gear for vertical takeoff and landing
An unmanned aerial vehicle (UAV) includes a UAV body constructed and arranged to carry a payload, a set of UAV wings coupled with the UAV body, and a set of undercarriage apparatus coupled with at least one of the UAV body and the set of UAV wings. The set of UAV wings is constructed and arranged to provide lift to the UAV. At least one undercarriage apparatus of the set of undercarriage apparatus includes an elastomeric vehicle mount, a leg, and a coupling constructed and arranged to couple the leg with the elastomeric vehicle mount. The elastomeric vehicle mount is constructed and arranged to absorb energy provided from the leg through the coupling.
Owner:TEXTRON SYSTEMS CORP
Sled landing gear and method for using same
A sled landing gear and a method for using same. The sled landing gear comprises a main landing gear (100), a front steel cable (200), a rear steel cable (300), a retractable steel cable (400), a main gear sled (500), and a retraction / extension device. The main gear sled (500) is a double-board structure with an opening. An end of the front steel cable (200) is connected to the main landing gear (100). Another end of the front steel cable (200) is connected to a front end of the main gear sled (500). An end of the rear steel cable (300) is connected to the main landing gear (100). Another end of the rear steel cable (300) is connected to a rear end of the main gear sled (500). An end of the retractable steel cable (400) is connected to a middle section of the rear steel cable (300). Another end of the retractable steel cable (400) is connected to the retraction / extension device. The retraction / extension device controls retraction and extension of the sled via the retractable steel cable.
Owner:HARBIN
Landing gear for a vertical take-off and landing aircraft
The invention related to a Landing gear (10) for a vertical take-off and landing aircraft (100), comprising a wheel (20), a shock absorber (30) with an absorber connection (32) to connect to a fuselage (110) of the aircraft (100) and at least one attachment lever (40) with a lever connection (42) to connect to the fuselage (110) of the aircraft (100) spaced apart from the absorber connection (32), the wheel (20) being attached to the attachment lever (40) spaced apart from the lever connection (42), wherein the shock absorber (30) is connected to the wheel (20) directly or indirectly via a wheel connection (34) to provide a load path (LP) for vertical load from the wheel (20) to the absorber connection (32), and wherein the shock absorber (30) comprises a fuse pin (36) at the absorber connection (32) and / or the wheel connection (34) having a predetermined breaking load to break and release the connection at the absorber connection (32) and / or the wheel connection (34), and wherein the attachment lever (40) comprises a rotary bearing (41) providing a folding movement for the wheel (20) from an extended landing position (ELP) into a crash position (CP) when the fuse pin (36) breaks.
Owner:ARCHER AVIATION INC
Counterweight structure of skid undercarriage and skid undercarriage
The utility model relates to a skid undercarriage counterweight structure and a skid undercarriage, belongs to the technical field of aerospace, and solves the problem that the undercarriage resonates in ground experiments and test flight processes due to actual skid undercarriage products and design deviations. The device comprises a central shaft and a balancing weight, the number of the balancing weights is multiple, and the balancing weights are arranged on the center shaft in a sleeving mode. And the counterweight structure is arranged in the undercarriage second pipe. According to the skid undercarriage, the structure of the undercarriage is not changed, the counterweight structure is arranged in the first pipe of the skid undercarriage, and the resonance phenomenon of the undercarriage is weakened or avoided.
Owner:芜湖联合飞机科技有限公司
Landing gear sled puller device and method of designing the same
The application provides a landing gear sled pull rod device, and belongs to the technical field of helicopter landing gear design. The device comprises an outer cylinder, a piston rod, a spring and a limiting joint. The outer cylinder is arranged on a landing gear buffer, the piston rod is arranged on a landing gear sled, one end of the piston rod extends into a hole in the outer cylinder, the limiting joint is arranged at the connection between the outer cylinder and the piston rod, the limiting joint, the inner wall of the outer cylinder and the outer wall of the piston rod jointly form a closed space, and the spring is sleeved on the outer side of the piston rod body and located in the closed space. The device can keep the posture of the helicopter sled. Meanwhile, the design of the pull rod device can keep the sled in an upward posture at all times, which is beneficial to the helicopter landing on snow or sliding, so that the sled cannot be inserted into the snow, and the helicopter can smoothly slide above the snow.
Owner:CHINA HELICOPTER RES & DEV INST
Anti-seismic enhancing structure of ice surface rescue unmanned aerial vehicle and ice surface rescue unmanned aerial vehicle
Owner:XUZHOU BLUE LAKE INFORMATION TECH CO LTD
Skid device for aircraft and method for controlling the same
The present disclosure relates to a skid device for aircraft and a method for controlling the same that may implement an optimal soft landing even under varied landing conditions in various environments, and the skid device may include: at least one support leg (10) having a hollow portion and fixed to a lower portion of a fuselage; a skid (20) connected to an end of the support leg; a magnetic field generator (30) installed in the hollow portion; and a magnetorheological material (40) accommodated in the hollow portion.
Owner:HYUNDAI MOTOR CO LTD +1
Skid device for aircraft and method for controlling it
Owner:HYUNDAI MOTOR CO LTD +1
Multi-stage multi-phase buffering skid type landing gear
The invention discloses a multi-stage multi-phase buffering skid type landing gear, which belongs to the technical field of aircraft landing buffering, and comprises a skid plate, a strut mechanism, a buffering bent plate mechanism, an aluminum honeycomb buffering mechanism and a sliding mechanism. The upper end of the supporting column mechanism is fixed to the aircraft, an oil-gas buffer is arranged in the supporting column mechanism to form first-stage buffering, and impact energy is preliminarily absorbed and dissipated through the synergistic effect of compressed gas and hydraulic oil. The buffering bent plate mechanism is composed of an arc-shaped bent plate and a connecting piece of the arc-shaped bent plate and can convert impact loads into elastic deformation energy. The aluminum honeycomb buffering mechanism is arranged between the skid plate and the arc-shaped bent plate, generates plastic deformation when being pressed, and forms secondary buffering together with the buffering bent plate mechanism. The sliding mechanism is used for guiding the two ends of the arc-shaped bent plate to synchronously slide outwards in the length direction of the skid plate, and uniform compression of the aluminum honeycomb buffering mechanism is guaranteed. Through the synergistic effect of a multi-stage buffering mechanism, the impact load peak value is effectively reduced, and the buffering stability and the structural reliability are improved.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
Aircraft takeoff and landing supporting system and light-weight sled plate composite structure adopted by same
The invention relates to the technical field of aviation aircraft takeoff and landing systems, in particular to an aircraft takeoff and landing supporting system and a light-weight sleigh plate composite structure adopted by the aircraft takeoff and landing supporting system, and the aircraft takeoff and landing supporting system is of a combined structure of a front sleigh plate, a front composite restraining assembly, a main sleigh plate and a main composite restraining assembly. The problem that an existing aircraft takeoff and landing system cannot have the takeoff and landing capacity on land and ice and snow road surfaces at the same time is solved, adaptability and stability are good, meanwhile, the defects that an existing sled plate is heavy, poor in low temperature resistance and insufficient in impact resistance are overcome through a light-weight sled plate composite structure, the light-weight and high-strength structural design is achieved, and the service life of the sled plate is prolonged.
Owner:RHYXEON GENERAL AIRCRAFT CO LTD
Undercarriage and aircraft
The utility model discloses an undercarriage and an aircraft, and relates to the technical field of equipment. The frame body is used for being installed at the bottom of the aircraft, the frame body comprises an arch-shaped beam used for being connected with the aircraft and skid pipes connected with the two ends of the arch-shaped beam, the skid pipes are used for making contact with a supporting face, and a boosting assembly is arranged on the frame body and used for applying thrust in the direction opposite to the descending direction of the aircraft so as to reduce the descending speed of the aircraft. According to the undercarriage provided by the invention, the boosting assembly is arranged on the frame body of the undercarriage, and the thrust can be applied in the direction opposite to the descending direction of the aircraft through the boosting assembly, so that the descending speed of the aircraft is reduced, and the risk that the aircraft is damaged when falling to the ground can be reduced.
Owner:BEIJING TSINGAERO ARMAMENT TECHNOLOGY CO LTD
A skid-type landing gear structure
This application belongs to the field of aircraft landing gear technology, and specifically relates to a novel skid-type landing gear structure, comprising: skid tubes, including two arranged at different tilt angles; a front crossbeam connected to the front end of the two skid tubes; a rear crossbeam connected to the rear end of the two skid tubes; and a fuselage joint installed on the front and rear crossbeams for connecting the front and rear crossbeams to the fuselage; wherein both the front and rear crossbeams are curved upwards to form an arc-shaped bow. This application reduces the load on the landing gear and aircraft; reduces the weight of the skid-type landing gear and aircraft; improves the cushioning performance of the skid-type landing gear; and reduces the manufacturing cost of the aircraft.
Owner:XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA
Buffering anti-collision structure of ice surface rescue unmanned aerial vehicle and ice surface rescue unmanned aerial vehicle
According to the buffering anti-collision structure of the ice surface rescue unmanned aerial vehicle and the ice surface rescue unmanned aerial vehicle, a plurality of rubber columns are arranged between an upper supporting frame and a lower supporting frame, the impact force generated when crushed ice on the water surface and the ice surface collides with the unmanned aerial vehicle can be reduced, and abrasion of the unmanned aerial vehicle is reduced. The device is characterized in that the device is composed of a rack, a rack head, a rack tail, a rack middle part, a first handle, an upper supporting frame, a rubber column and a lower supporting frame, the rack comprises the rack head, the rack tail and the rack middle part, the two ends of the rack middle part are correspondingly arranged at one end of the rack head and one end of the rack tail respectively, and the first handle is arranged at the other end of the rack head; one side of an upper supporting frame is arranged on the side face of the machine frame, the edge of one side of the upper supporting frame is connected with the edge of the side face, except the edge where the first handle is arranged, of the machine frame, and one side of a lower supporting frame is arranged on the side face of the machine frame.
Owner:XUZHOU BLUE LAKE INFORMATION TECH CO LTD
Multistage suspension for UAV landing gear
A landing gear assembly for an unmanned aerial vehicle (UAV) includes a shock tower, a pair of leg members, and suspension assemblies. The shock tower is adapted to mount to a frame of a fuselage of the UAV and includes upper and lower end mounts. The leg members are adapted to extend out from opposing sides of the lower end mounts. The leg members are flexible and each include an upper leg section pivotally mounted to the lower end mount and a lower leg section adapted to connect to a ground gear. The suspension assemblies are each mounted to and extend between the upper end mount and a corresponding one of the leg members. The suspension assemblies each include a damper and a spring.
Owner:WING AVIATION LLC
Rocker arm type undercarriage, aircraft and method
The invention provides a rocker arm type undercarriage, an aircraft and a method. The rocker arm type undercarriage comprises a supporting rod, a retractable actuating cylinder, a connecting rod, a buffer mechanism, a skid and a follow-up actuating cylinder used for locking the undercarriage at any position, one end of the supporting rod is hinged to one end of the buffer mechanism, and the other end of the buffer mechanism is hinged to the skid. One end of the folding and unfolding actuating cylinder is hinged to the supporting rod, one end of the connecting rod is hinged to and slides on the buffering mechanism, one end of the follow-up actuating cylinder is hinged to the supporting rod, and the hinge point of the follow-up actuating cylinder and the supporting rod is located below the hinge point of the folding and unfolding actuating cylinder and the supporting rod; the other end of the supporting rod, the other end of the retractable actuating cylinder, the other end of the connecting rod and the other end of the follow-up actuating cylinder are all provided with connecting points E used for being hinged to a machine body. The aircraft can stably take off and land in a complex terrain environment, and the take-off and landing capacity and the bearing capacity of small and medium-sized aircrafts in the complex terrain are improved.
Owner:LANDING GEAR ADVANCED MFG
Correctable skid landing gear for helicopter takeoffs and landings at high altitudes and its control method
This invention provides a skid-type landing gear for helicopter takeoff and landing at high altitudes and its control method. The landing gear includes a strut, a brushless DC motor, a universal joint, a worm gear mechanism, a main skid, and a skid for correction. The main skid and the skid for correction can effectively adapt to soft and undulating surfaces such as snow, sand, and swamp at high altitudes. The brushless DC motor, through the force transmission of the universal joint and the worm gear mechanism, ensures that one skid for correction contacts the ground while the other skid remains initially off the ground. The difference in ground friction between the two sides generates a yaw torque on the aircraft, which is the correction torque. This effectively solves the problem of difficult correction during takeoff and landing for helicopters equipped with skid-type landing gear. Through the self-locking principle of the worm gear mechanism, the motor is protected from counter-torque and structural damage when the skid for correction is subjected to a large impact force from an uneven road surface.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
Tapered insertion brake deceleration structure of ice surface rescue unmanned aerial vehicle and ice surface rescue unmanned aerial vehicle
According to the ice surface rescue unmanned aerial vehicle cone insertion brake deceleration structure and the ice surface rescue unmanned aerial vehicle, an air cylinder drives a telescopic rod to stretch, the telescopic rod drives a brake cone to be inserted into the ice surface, braking force can be generated on the unmanned aerial vehicle, and the sliding speed of the unmanned aerial vehicle is reduced. The device is characterized in that the device is composed of a machine body, sliding plates, second screws, sliding plate grooves, a rack, a rack head, a rack tail, a rack middle part, air cylinders, telescopic rods, a circular plate and a brake cone, the rack comprises the rack head, the rack tail and the rack middle part, the sliding plates comprise two vertical sliding plates and two transverse sliding plates, and the air cylinders are correspondingly arranged on the two sides of the bottom face of the rack middle part respectively; the air cylinder is located between the two transverse sliding plates, the air cylinder is located between the side face of the machine body and the vertical sliding plate, one end of a telescopic rod is arranged in the air cylinder in a sliding mode, the other end of the telescopic rod is arranged on the top face of a circular plate, and a brake cone is arranged on the bottom face of the circular plate.
Owner:XUZHOU BLUE LAKE INFORMATION TECH CO LTD
Anti-skid device for helicopter skid undercarriage to take off and land in ice and snow environment
The utility model discloses an ice and snow environment take-off and landing antiskid device for a skid landing gear of a helicopter, which relates to the technical field of skid landing gears of helicopters and comprises a snow palm plate, a friction plate and a plurality of hoops which are arranged on the bottom surface of the skid landing gear, and the friction plate is mounted on the bottom surface of the snow palm plate; the plurality of hoops are clamped on a skid rod of the skid undercarriage and are connected with the friction plate; the snow sole plate comprises a first snow sole plate body and a second snow sole plate body, and the top face of the first snow sole plate body is concaved inwards to form a plurality of long-strip-shaped grooves. The second snow sole plate body is in an isosceles trapezoid shape, the second snow sole plate body is arranged at the front end of the first snow sole plate body, and the second snow sole plate body and the first snow sole plate body are of an integrally-formed connecting structure. The device can greatly increase the friction force between the undercarriage and the ice and snow ground, can be completely compatible with the helicopter undercarriage, can be quickly mounted and dismounted, and can be repeatedly used.
Owner:SHAANXI CHINA AERO IND GAS SPRING +1
Cargo aircraft
PCT designated stage expiredWO2024254357A3Wing adjustmentsAircraft doorsClassical mechanicsMechanical engineering
An example of a rotating monowing aircraft with streamlined removable cargo pod is described. An example of an aircraft in shipping position is described. An example of a shipping optimized tail-sitter with variable orientation cargo pod is described. An example of a shipping optimized tail-sitter with variable orientation cargo pod lifting / dropping sequence is described.
Owner:EDGETTE CHRISTOPHER
Ground manoeuvring device for aeroplanes with landing gear skids
The invention relates to a manoeuvring device (100) for ground movements of an aeroplane with landing gear skids (10), such as an aircraft, which does not require removing a lateral nacelle or a work platform when the aeroplane is equipped with same. To this end, the inventor proposes a ground manoeuvring device which comprises pivoting arms (140) that are connected to wheels (50), the pivoting arms being pushed so as to be rotated with respect to the body (110) of the ground manoeuvring device, in a direction from top to bottom until the wheels come into contact with the ground and the landing gear skid is lifted off the ground.
Owner:LLEDO IND
Rotor aircraft with dual flight mode
A vertical take-off and landing (VTOL) aircraft designed for both vertical and horizontal flight features a fuselage that houses essential stability and propulsion components. The aircraft includes a main rotor (2) and wide-chord blades (1) with a fully proportional cross-section, enabling high lift in both VTOL and fixed-wing modes. The flight control system facilitates smooth transitions between flight modes by adjusting the orientation of the blades (1), switching between the main rotor (2) and a rear pusher propeller (5) driven by a gas engine (16). Stability in VTOL mode is maintained by front and rear duct fans (6, 6') and ailerons (4, 4'), while in horizontal mode, stability is provided by front and rear skids (3, 3'). The aircraft is further enhanced by solar panels (14) on the fuselage, allowing for battery recharging during horizontal flight, extending operational endurance. A payload compartment (10) maintains the aircraft's center of gravity across flight modes.
Owner:UAB PB GROUP
Helicopter sleigh anti-skid device suitable for ice and snow road surface and helicopter
The invention provides a helicopter sled anti-skid device suitable for ice and snow pavements and a helicopter, and belongs to the technical field of helicopter undercarriage design. One end of a brake sled plate in the device is connected with a main sled plate through an actuating mechanism, and an anti-skid layer is arranged at the bottom of the brake sled plate; one end of the actuating mechanism is rotationally connected to the joint of the brake sled plate, and the other end is connected with the joint of the main sled plate; one end of the telescopic actuating cylinder is matched and connected with the actuating mechanism and is fixed on the joint of the main sled plate, and the other end is connected with the mounting bracket; the auxiliary wheel assembly is arranged at the tail of the brake sledge plate; when the helicopter skates on the ice surface, the telescopic actuating cylinder extends and pushes the actuating mechanism under the pressure supply effect, the actuating mechanism drives the brake sledge plate to move relative to the main sledge plate, the auxiliary wheel assembly is folded upwards, the brake sledge plate is put down, the brake sledge plate anti-skid layer makes contact with the ice surface, and the ground friction force in the skating process is increased; therefore, the helicopter can be effectively stopped when running on an ice and snow road, and the differential brake function can be maintained.
Owner:CHINA HELICOPTER RES & DEV INST
Unmanned aerial vehicle undercarriage
The utility model discloses an undercarriage of an unmanned aerial vehicle. The undercarriage comprises an undercarriage assembly, an oil tank assembly and a load mounting assembly, the undercarriage assembly comprises undercarriage inclined supporting rods, undercarriage skid rods and an undercarriage skid connecting rod, any undercarriage skid rod is fixedly connected with any two undercarriage inclined supporting rods, and the two ends of the undercarriage skid connecting rod are connected with the undercarriage skid rods; the oil tank assembly comprises an oil tank supporting rod and an oil tank shell, the oil tank supporting rod is connected with the undercarriage inclined supporting rod, and the oil tank shell is fixed to the oil tank supporting rod; the load mounting assembly comprises a load connecting rod and a load mounting plate, the load connecting rod is connected with the undercarriage diagonal bar, and the load mounting plate is fixed on the load connecting rod. According to the undercarriage of the hybrid multi-rotor unmanned aerial vehicle, the weight of the hybrid multi-rotor unmanned aerial vehicle is reduced, the space flexibility and expansibility of equipment arrangement are improved, and the production and manufacturing cost of the unmanned aerial vehicle is reduced.
Owner:NAT UNIV OF DEFENSE TECH +1
Self-adaptive unfolding sled type landing gear and working method thereof
The invention belongs to the technical field of aircraft ground taxiing, and particularly relates to a self-adaptive unfolding type sleigh type landing gear and a working method thereof.When the device is used, the snow depth is detected through a snow depth detector, whether the snow depth exceeds a set value or not is judged through a control system of an aircraft, and when the snow depth does not exceed the set value, the aircraft is started; when the snow depth exceeds a set value, the extension front sledge plate mechanism and the extension rear sledge plate mechanism do not act, and when the snow depth exceeds the set value, the extension front sledge plate mechanism and the extension rear sledge plate mechanism are unfolded; the extension front sledge plate mechanism and the extension rear sledge plate mechanism are unfolded so that the stress area of the main sledge plate can be increased, resistance borne by the main sledge plate can be reduced, meanwhile, whether the extension front sledge plate mechanism and the extension rear sledge plate mechanism need to be unfolded or not can be judged according to the snow depth, and therefore the self-adaption effect is achieved.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
An embedded electric drive heading stabilization type skid landing device and its working method
The present invention discloses an embedded electrically driven heading stabilization type skid landing device and its working method, comprising an outer cylinder, an upper torque arm, a lower torque arm, a support, a skid, a guide wheel, an upper end cover, a piston rod, a rocker arm, a mounting plate, a friction plate, a load sensor, a buffer, a skid pitch buffer and an actuator module. The present invention specifically provides an embedded electrically driven heading stabilization type skid landing device and its working method. When the aircraft's taxiing direction deviates, the system controls the brushless motor to drive the rocker arm connecting rod mechanism to press the friction plate down to the road surface to generate pressure, thereby changing the bonding force between the single-sided landing device and the road surface, causing the fuselage to be subjected to a yaw moment, thereby correcting the aircraft's taxiing direction and enhancing the aircraft's taxiing heading stability. The load sensor can measure the pressure of the friction plate on the road surface and provide feedback. The friction plate is made of heat-resistant composite material, and specific patterns are processed on its bottom to provide additional lateral force and reduce the aircraft's tail swing phenomenon.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS