47results about How to "Aerodynamic" patented technology

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 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.

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.

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 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 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 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.