47results about How to "Aerodynamic" patented technology

Actively controlled texturing systems for and methods of selectively and reversibly forming wrinkles, or modifying the amplitude, wavelength, or pattern of existing wrinkles upon a surface using active material actuation.

The invention provides a bird-like flapping-wing micro air vehicle, comprising a rack, a drive mechanism, a control mechanism, a lithium battery, a steering mechanism, a left flapping mechanism, a left flapping wing, a right flapping mechanism, a right flapping wing, an empennage and a pitching mechanism; the drive mechansim is installed on the rack; the left flapping mechanism and the right flapping mechanism are respectively installed at two sides of the rack, driven by the drive mechanism, and respectively connected with the left flapping wing and the right flapping wing, the flapping of the left flapping wing and the right flapping wing is controlled, so that the motion tracks of the tail ends of the left flapping wing and the right flapping wing are spherical 8-shaped; the steering mechanism is installed on the rack to control the left and right steering of the air vehicle. the pitching mechanism is installed on the rack to control the empennage to swing up and down; the lithium battery provides power to the air vehicle, and the control mechanism receives external signals and controls the overall flight state of the air vehicle. The air vehicle provided by the invention aims at solving the problems of complex structure, unstable flight, low flight efficiency, low bionic degree and the like of the existing flapping-wing air vehicle.

An air flue system of a compartment of a refrigerator comprises an air flue device which comprises a first cover plate, a second cover plate, an air flue part and a fan. The air flue part is installed between the first cover plate and the second cover plate, the first cover plate is close to an opening surface of the compartment, the second cover plate is installed close to the back wall of an inner cavity of the compartment, and the fan is slantingly installed on the second cover plate. A first cold air flue is arranged between the flue part and the first cover plate, a first warm air flue is arranged between the air flue part and the second cover plate, and the fan is communicated with the first cold air flue. An air return port is arranged on the air flue device and communicated with the first warm air flue. An air outlet is arranged on the first cover plate and communicated with the first cold air flue. The invention further provides a refrigerator comprising the compartment, wherein the air flue system is installed in the compartment. The air flue system of the compartment of the refrigerator and the refrigerator solve problems of low refrigeration efficiency in compartment air supply, non-uniformity in air supply and large temperature difference.

The invention relates to a fore flap disposed on the wing of an aircraft, wherein the wing comprises a main wing (24) having an upper planking (21), a lower planking (22), and a profile nose (23), and the fore flap (12) is on the front side of the main wing (24) and has a profile nose (10) oriented forward and an end edge (11) facing the main wing (24) and oriented rearward, and can be extended in order to increase lift by increasing the curvature and extent of the wing profile in the depth direction of the wing, from a retracted cruise flight position (I) in which the fore flap (12) contacts the front side of the main wing (24) and extends the profile thereof into a shape suitable for cruise flight, wherein the end edge (11) of the fore flap (12) contacts the main wing (24) in a first, partially extended position (II), and having the end edge (11) at a distance from the profile nose (23) of the main wing in a second, further extended position (IM), exposing high-energy air from the bottom side of the fore flap (12) to the top side (21) of the gap (14) leading the main wing (24). The fore flap (12) comprises a main body (6) and an end edge part (2) facing the main wing (24) and displaceable at an angle in the wing span direction of the fore flap (12) relative to the main body (6), and on which the end edge (11) of the fore flap (12) is provided, and which is acted on by means of a device (4; 8; 9) generating a contact force for contacting the end edge (11) of the fore flap against the profile nose (23) of the main wing (24).

The invention specifies a turbine rotor blade (10) for a gas turbine which is traversed axially by flow, which turbine rotor blade (10) is equipped with a fastening region (12) and an aerofoil profile (16). Meandering cooling ducts (22b, 22c, 22d) with interposed deflecting regions (30) are provided in the interior of the aerofoil profile (16). In the deflecting regions (30), it is possible to prevent dead water regions, which are generated in the prior art, by virtue of at least one of the fins (24) running so as to curve towards the front edge (18) or towards the rear edge (20) in the region of the aerofoil tip (27). At the same time, an opening (40) is provided in the curvature (32) of the fin (24), through which opening (40) a part of the coolant (29) which flows in the deflecting region (30) can pass over into the adjacent cooling duct (24).

The invention discloses a multi-functional car shower head type windshield wiper. The multi-functional car shower head type windshield wiper comprises a windshield wiper arm, a connecting device, a wiper body and a windshield wiper strip which are connected in sequence, wherein, the wiper body comprises an upperbody, a connecting body and a lowerbody which are connected in sequence; a plurality of water outlet holes are formed in the lowerbody, and a plurality of air outlet holes are formed in the connecting body; the air outlet holes are connected with an air pump through pipelines, and the water outlet holes are connected with a water pump through pipelines; the windshield wiper strip is provided with a scraping piece and a soft brush, installed on the end surface of the lowebody and rotates relative to the lowebody of the windshield wiper strip; and a groove is formed in the end surface of the lowerbody, when the windshield wiper strip stretches out and draws back, the windshield wiper strip is stored in the groove or stretches out of the groove, and when the windshield wiper strip rotates, the scraping piece and the soft brush which are used for replacing the windshield wiper strip are made to run. By means of the multi-functional car shower head type windshield wiper, the cleaning efficiency of the windshield wiper is improved, and meanwhile, the wind resistance of the windshield wiper is reduced.

The invention provides a special unmanned helicopter for high-rise and mountain forest extinguishment, which can be loaded on a matched firefighting truck to be transported to a fire scene. The creative system design of the unmanned helicopter different from a conventional helicopter is characterized in that the helicopter carries a pipeline connected with the ground to lift off and fly in a kite string pulling mode, so that electric motors powered by cables connected with the ground can be utilized to drive the helicopter to lift off and fly, electronic control wire cables connected with the ground are utilized to drive the helicopter to fly under wired remote control, the helicopter starts to spray water and put out a fire when flying to the position requiring extinguishment, and a fire-fighting lance of the helicopter sprays high-pressure water for extinguishment through continuous water supply of a hose connected with a high-pressure water supply firefighting truck on the ground. The purpose of timely extinguishment of high-rise and mountain forest fire disasters is achieved, the worldwide problem that the high-rise extinguishment is difficult to implement due to the fact that the firefighting height of all conventional firefighting equipment is lower than 100 m is effectively solved, so that the safety of high-rise residents is guaranteed, the high-rise residents live safely, the tragedies such as U.S. 911 fire, Shanghai high-rise fire and the like do not happen again, and high-rise and mountain forest extinguishment is not difficult.

The invention discloses a fixed wing and rotor ring hybrid unmanned aerial vehicle. Integration design is performed on the structures of a fixed wing unmanned aerial vehicle and a rotor ring unmannedaerial vehicle, the characteristics that the rotor wing unmanned aerial vehicle can land vertically and is not limited by taking-off and landing site are combined with the characteristics that the fixed wing unmanned aerial vehicle is high in flying speed, long in voyage, heavy in carrying capacity and high in efficiency; the fixed wing and rotor wing hybrid unmanned aerial vehicle better conformsto the characteristics of aerodynamics by tilting the overall vehicle body, so as to realize rapid flying. When the fixed wing and rotor ring hybrid unmanned aerial vehicle flies rapidly, the vehiclebody tiles forwards, so that the fixed wing is horizontal, and the rotor wing rotates; at the moment, four rotor wings supply lifting power for the unmanned aerial vehicle, and meanwhile, forward flying power is provided, and the posture of the unmanned aerial vehicle is controlled by regulating differential speed between motors; fixed wings of the fixed wing and rotor ring hybrid unmanned aerialvehicle simultaneously supply partial lifting powder, and the combination of the fixed wings and the rotor wings enables the unmanned aerial vehicle to both save energy and increase the flying speedin flying, so as to greatly reduce the express transportation cost and time.

The invention relates to a wallboard part detecting device which comprises a frame, vertical support columns, a detecting part, at least one middle crossbeam and a support device. The frame comprises a rectangular structure formed by two parallel first lateral edges and two parallel second lateral edges vertical to the first lateral edges. The vertical support columns for supporting the frame are fixed on the four lateral edges. The detecting part for detecting to-be-detected parts is fixed on the frame. The detecting part is vertically disposed between the two first lateral edges. The middle crossbeams vertical to the second lateral edges are evenly disposed between the first lateral edges. Two ends of each middle crossbeam are fixedly connected to the second lateral edges. The support device for supporting the to-be-detected parts is fixed on the frame. The support device is parallel with the detecting part and disposed between the two second lateral edges. By the wallboard part detecting device, detecting modes of traditional rigid detecting tools are changed, a large amount of tool research cost and time are saved, and detecting speed is increased.

A high-lift device of a flight vehicle includes: a flap main body provided at a trailing edge portion of a main wing of the flight vehicle so as to be extracted from and be retracted in the trailing edge portion and extending in a wing span direction of the main wing; and a vortex suppressing portion provided at a tip end portion of the flap main body in a wing span direction of the flap main body and configured to suppress a vortex rolling up from a lower surface of a tip end portion of the flap main body to an upper surface of the tip end portion.

The invention discloses a controlled fragment with a warhead shell function. A warhead shell comprises a grain, a conical protection cover and a sealing part located on the tail of the grain; the grain is sleeved with a columnar controlled fragment body, partitioning troughs are transversely and longitudinally formed in the inner surface and the outer surface of the controlled fragment body at equal distances, and a solid body is arranged in the middle portion; the controlled fragment body is divided into a plurality of partitioning bodies through the partitioning troughs; and the tow ends of the partitioning bodies are in a streamline shape. The controlled fragment has the beneficial effects that the stress of the grain to the controlled fragment body is effectively increased, speed losses of the partitioning bodies in the flying process are reduced, the kinetic energy of the partitioning bodies reaching the target point becomes large, the penetrating power of the partitioning bodies to a target is high, and the effectiveness of the partitioning bodies is improved.

A jet flying vehicle with telescopic ring-shaped wing is composed of a semi-spherical or dished main body for carrying passengers or goods, engine on the top of main body, turbo-propeller connected to said engine, multiple air guiding blades arranged on the top circumference at intervals, the telescopic ring-shaped wing, and jet channel formed by guiding blades, ring-shaped ring and casing of main body. It can take off rertically, glide in sky, and fly near water surface or ground, or can be static in sky.

The invention discloses a grain drying unit. The grain drying unit comprises a hot-blast stove, a grain dryer and a connecting pipe for connecting the hot-blast stove with the grain dryer, wherein the hot-blast stove is a biomass hot-blast stove and takes cereal waste as a fuel, the grain dryer which is a batch type recirculating grain dryer is capable of achieving recirculating drying, and one end of the connecting pipeline is connected with a hot-blast outlet while the other end of the connecting pipe is connected with an intake hood. The grain drying unit has the advantages of high automation level, high processing capability, high energy utilization ratio and low cost.

The invention relates to an air assisting atomization oil sprayer and a control method. An oil conveying pipe is arranged in one side of an oil sprayer pillar body of the oil sprayer. One end of the oil conveying pipe is connected with a fuel channel, and the other end of the oil conveying pipe communicates with an oil cavity in the bottom of a plunger. The other side of the oil sprayer pillar body is provided with an auxiliary air channel. One end of the auxiliary air channel is connected with a gas conveying pipe, and the other end of the auxiliary air channel communicates with the oil sprayer pillar body and a rectifying shell composed of a rectifying cover. The oil sprayer leads gas from the rear portion of an intercooler, an electromagnetic switch valve is arranged in the middle of agas conveying pipeline, and the connecting manner of the electromagnetic valve and an ECU and the connecting manner of electromagnetic valves controlling oil spraying of the oil sprayer are the same.When the oil sprayer receives an ECU signal and oil spraying is started at the terminal stage of the suction stroke, the electromagnetic valves in a gas channel are opened at the same time, supercharged gas is sprayed into the rectifying shell of the oil sprayer from the auxiliary air channel shown in the graph, high-pressure gas passes through a collector ring, a turbulent flow ring and a one-wayvalve and encounters with sprayed gasoline for conducting auxiliary atomization, the atomization quality is improved, and the atomization characteristic of the oil sprayer is optimized.

The invention discloses a smart balance air vehicle. The air vehicle is provided with a semi-spherical or dish-shape manned cabin, the top of the cabin is provided with an engine, a centrifugal turbine connected with the engine, and an air fairing covering the top and upper periphery of the cabin, an annular cyclone airway is formed between the fairing and the cabin, the airway is provided with multiple jet ways for controlling jet directions and preventing the air vehicle from rotating automatically, and is provided with multiple active valves for adjusting flying gestures. The air vehicle provided by the invention is cheaper, is more suitable for practical use and home use, and is safer and more reliable in use and operation. The air vehicle has no wings or tail, can ascend and descend vertically, can stay still in air, and is suitable for flying in medium-low air, or close to water or ground.

The invention relates to an air source heat pump water heater with high energy efficiency, comprising an aerofoil fan, a motor, a motor rotation shaft and a compressor, wherein the aerofoil fan consists of a wheel hub used as a rotation shaft and a blade, wherein the wheel hub is arranged on the motor rotation shaft; the blade is provided with a blade surface, a front edge, a rear edge and an outer blade edge; a plurality of the blades are arranged on the periphery of the wheel hub uniformly; the blade surface is S shaped in a transverse direction and is a large arc in a longitudinal direction; and a part of the front edge is thickened and is additionally provided with a front edge closed angle. The invention improves the aerofoil fan, thereby meeting the requirements for silence, energy saving and high efficiency of the heat pump water heater.

The invention discloses a windmill wind blade with multiple blades on an outer ring, which has a large wind-engaging area, high pneumatic performance and high conversion efficiency of wind energy and can regulate the wind-engaging area of the wind blade automatically. The wind blade comprises a windmill hub (1), a spoke-shaped skeleton pipe (3), an annular skeleton ring (2) and a main blade group on the outer ring of the annular skeleton ring, wherein the spoke-shaped skeleton pipe (3) is connected between the windmill hub (1) and the annular skeleton ring (2); a cavity (4) is formed inside the annular skeleton ring (2); and a blade shaft base (7), a thrust bearing (9) and a torsional spring (10) are arranged in the cavity (4) and are used for mounting the main blade group outside the annular skeleton ring.

The invention relates to automobile engine power engineering, aerodynamics, mechanical and electric integration, fuel electric injecting system, maintaining engineering, energy conservation and exhaustion reduction, belonging to the automobile mechanical engineering. In accordance with aerodynamics relay principle, an upright direct-current high revolving speed motor is designed as the basis, coaxial relaying fans are arranged at the top and bottom of a rotor, and rotated together to carry out air absorbing and exhausting in the same direction; different exhaustion rates of the engine are corresponding to different pressurizing dust removers; the air quality, temperature, and opening degree of the throttle valve are kept reasonable; when the burning pressure is fixed, the injecting rate is reduced, the energy conservation and exhaustion reducing are achieved.

The invention discloses a hot blast stove adopting biofuel. Rice husks, straw, wood and other grain fertilizers serve as the fuel. The hot blast stove comprises a stove body defined by an outer frame and a base. A hearth located at the lower portion, a heating pipeline located above the hearth and a hot air chamber connected with the heating pipeline are arranged in the stove body. The upper end of the hot air chamber is connected with a hot air pipeline led to the outer portion of the stove body. A hot air outlet is formed in the tail end of the hot air pipeline. A smoke discharge draught fan is arranged at the upper end of the stove body. The smoke discharge draught fan is connected with a smoke outlet of the stove body through a smoke discharge pipeline. By means of the hot blast stove, the fuel such as the rice husks, the straw and the wood is used for combustion, cost is low, and environment friendliness is high; the occupied area is small, and moving is convenient; and a temperature control system is arranged so that the temperature can be effectively controlled, and heat supply is stable.

An air duct system for a refrigerator compartment includes an air duct device. The air duct device includes a first cover plate, a second cover plate, an air duct piece and a fan, the air duct piece is installed between the first cover plate and the second cover plate, and the first cover plate is close to On the opening surface of the compartment, the second cover plate is installed close to the rear wall of the inner cavity of the compartment, and the fan is obliquely installed on the second cover plate. There is a first cold air channel between the air channel member and the first cover plate, and a first warm air channel between the second cover plate, and the fan is connected to the first cold air channel connected. The air duct device is provided with an air return port, communicating with the first warm air duct; the first cover plate is provided with an air outlet, communicating with the first cold air duct. The present invention also provides a refrigerator, which includes a compartment. The above-mentioned air duct system is installed in the compartment, which solves the problems of low cooling efficiency, uneven air supply and large temperature difference in the compartment.

The invention discloses an anti-interception flyer with a smoke and bait object releasing function. The anti-interception flyer with the smoke and bait object releasing function comprises a processor, a detection module, a release module, a shell, a sensing device and a power supply, wherein the position on the shell, which is near the release module, is provided with a hatch; the hatch is connected with the processor via a second switch; when the detection module detects that a detection system traces and intercepts the flyer within a preset detection range, a detection result is sent to the processor; the processor controls a first switch to be switched on so as to control the release module to release the smoke; the sensing device senses that the smoke exists in the shell; a sensing result is sent to the processor; according to the sensing result, the processor controls the second switch to be switched on so as to control the hatch to be opened to release smoke and a bait object; the smoke and the bait object are used for confusing a detection system for tracing and intercepting; the result of the optical observation instrument of the detection system is interfered with; the detection system stops tracing and intercepting; and the flyer takes the chance to escape under the covering of the smoke.

The invention discloses a tenon-type turbine blade with five pressure sensing holes on an elementary-stage front edge. The tenon-type turbine blade comprises the pressure sensing holes, pressure guiding channels, a blade top tenon, a blade root tenon, low-loss bent pipes and pressure guiding pipe connectors, wherein a plurality of rows of the pressure sensing holes are formed on the front edge ofthe blade in the blade height direction; each row is composed of five pressure sensing holes; and the pressure guiding channels are correspondingly connected with the orifices of the pressure sensingholes and the pressure guiding pipe connectors. By the adoption of the tenon-type turbine blade, the total pressure, the static pressure, the deflection angle and the Mach number of airflow at a turbine inlet, at a turbine rotor outlet in the blade height direction, at a plurality of elementary-stage positions, and within a range of the included angle between the incoming flow direction and the front edge + / - 120 degrees can be measured simultaneously; the tenon-type turbine blade is suitable for measuring the distribution of two-dimensional flow field parameters at the rotor outlet in the blade height direction under various working conditions; and the tenon-type turbine blade not only has the aerodynamic performance and strength of a conventional turbine blade and importantly the flow field parameter measurement function, but also has the advantages that no overhanging probe is adopted, the interference in a measured flow field is avoided, the own aerodynamic performance of the bladeis prevented from being influenced, and the parameter measurement accuracy is high compared with conventional pressure probe and blade-type probe measurement technologies.

The invention discloses an anti-interception flyer with functions of resisting laser attack, releasing a bait object and separating. The anti-interception flyer comprises a shell, a separation layer, a processor, a detection module, a power supply, at least one bait object, a protection layer, an orbit control system and a third switch, wherein the processor, the detection module, the power supply, the at least one bait object, the protection layer, the orbit control system and the third switch are arranged in the shell; the third switch is used for controlling the separation layer to be separated from the shell; when the detection module detects that an interceptor object is in the presence within a preset detection range, the processor controls the third switch to be switched on so as to separate the separation layer; meanwhile, the processor controls a second switch to be switched on so as to control a hatch to be opened, and the bait object is released so as to enable the flyer to take the chance to escape; when a laser detection system detects the flyer and the laser detection system emits laser to the flyer, the protection layer on the outer surface of the separation layer of the flyer can reflect the laser irradiating to the separation layer so as to prevent the flyer from being destroyed; equipment in the flyer is prevented from being damaged; and meanwhile, the processor sends a control signal to the orbit control system to control the flyer to fly out of the original flight track so as to avoid from being traced and intercepted by the laser detection system.

The invention discloses an air-launched unmanned aerial vehicle. The unmanned aerial vehicle comprises a fuselage, a main wing assembly and a main wing folding structure, the main wing folding structure comprises a main wing platform, a main wing driving assembly and a main wing limiting assembly, and the main wing assembly comprises a left main wing and a right main wing; when the main wing assembly is folded, the left main wing and the right main wing are stacked in the length direction of the fuselage; when the main wing assembly is unfolded, the left main wing and the right main wing are flush in height and extend towards the two sides of the fuselage respectively; the main wing limiting assembly is movably connected with the main wing rotating assembly so as to limit the main wing assembly to be in a folded state when the main wing limiting assembly is effective; and the main wing driving assembly is in transmission connection with the main wing rotating assembly so as to drive the main wing rotating assembly to rotate and be converted into the unfolding state when the main wing limiting assembly loses efficacy. On the premise that the folding size is small, the functions of eliminating the height difference after the main wing is unfolded and having the dihedral angle are achieved at the same time, and the unmanned aerial vehicle has better aerodynamic performance while being convenient to store and transport.

The invention relates to a vehicle, in particular to a spokeless and chainless gear-driven bicycle, comprising a vehicle frame, a front wheel, a rear wheel, a handlebar, a handlebar shaft, a brake assembly and a seat, and the handlebar is fixed on the bicycle The top of the rotating shaft and the rotating shaft of the handlebar are movably fixed on the front part of the vehicle frame, and the vehicle seat is fixed on the upper rear part of the vehicle frame. The front wheel and the rear wheel are respectively a spokeless front wheel and a spokeless rear wheel. The wheel is fixedly installed at the lower end of the handlebar shaft. The lower part of the frame is fixedly equipped with a gear transmission gearbox. The two sides of the gear transmission gearbox are respectively connected with pedal assemblies. The rear part of the gear transmission gearbox is matched with a spokeless rear wheel. The spokeless and chainless gear-driven bicycle of the present invention has a novel design, constant instantaneous transmission ratio of power transmission, high reliability of the gear, and the spokeless design can not only ensure strength, but also conform to aerodynamics, and the antler-shaped handlebar is more practical , more user-friendly.