47results about How to "Increase lift" patented technology

The present invention is directed to a distributed active flow control (“DAFC”) system that maintains attached airflow over a highly cambered airfoil employed by an aircraft or other similar applications. The DAFC system includes a primary power source comprised of one or more aircraft engines, one or more power conversion units, and optionally, one or more auxiliary power units. The power conversion units are coupled to one or more aircraft engines for supplying power to a distribution network. The distribution network disperses power from the one or more power conversion units to active flow control units disposed within one or more aircraft flight control surfaces (e.g., the aircraft wing, the tail, the flaps, the slats, the ailerons, and the like). In one embodiment, an auxiliary power unit is included for providing a redundant and auxiliary power supply to the distribution network. In another embodiment, a back-up power source is provided in communication with the distribution network for providing an additional redundant power supply.

The invention discloses a bionic flapping-wing machine with double-section main wings. The bionic flapping-wing machine comprises a driving mechanism, a main bracket, a tail-wing mechanism, a double-section flapping-wing mechanism and two steering machines, wherein the driving mechanism is connected with the front end of the main bracket; the tail-wing mechanism is connected with the rear end of the main bracket; the double-section flapping-wing mechanism is connected to the driving mechanism; the two steering machines are arranged on the main bracket. The bionic flapping-wing machine disclosed by the invention has the following beneficial effects that the structure is simple and compact, the flapping-wing movement with complete symmetry can be realized, the flapping-wing machine can fly like a bird by adopting the double-section flapping-wing mechanism, due to the foldable wings, the resistance of the wings can be small in upwards flapping and the wingspan area can be the largest in downwards flapping, so that large lifting force is generated, and the flying speed and the hang time are increased. In addition, a spherical pair is adopted for connection with the tail-wing mechanism, the direction control of the flapping-wing machine is sensitive and the flapping-wing machine can imitate the flying of the bird. Furthermore, the bionic flapping-wing machine can be applied to the fields of bird repelling of an airport, monitoring, intelligence gathering, disaster rescuing and searching and the like.

The invention discloses a foldable wing extensible in wingspan .The foldable wing comprises a front wing, a rear wing, a base and an actuating system, wherein the front wing comprises a left front inner wing and a right front inner wing which are arranged symmetrically, the rear ring comprises a left rear wing and a right rear wing which are arranged symmetrically, the end of the left front inner wing and the end of the right front inner wing are hinged and installed to one end of the base though front wing installing shafts, the actuating system is arranged at the other end of the base, a left front outer wing and a right front outer wing which slide in the length directions of the inner wings are respectively arranged on the left front inner wing and the right front inner wing, one end of the left rear wing and one end of the right rear wing are hinged and installed to a sliding block, the other end of the left rear wing and the other end of the right rear wing are in hinged connection with the left front outer wing and the right front outer wing, and the sliding block is driven by the actuating system to longitudinally move along the base back and forward .The foldable wing is large in wingspan variation amplitude and small in occupied space, leans against the base when being folded, the left front outer wing and the right front outer wing are rotatably unfolded around the front wing installing shaft, meanwhile the left front outer wing and the right front outer wing increase the wingspan width, a lift force and the lift-drag ratio are increased, and the flight efficiency is improved .

A golf ball having an improved dimple pattern is disclosed. The dimples may have a regular or irregular polygonal perimeter, an undimpled land surface and a depression therein. The perimeter may alternatively comprise a number of linear sides and at least one curved side. At least a portion of the bottom of the depression is convex such that its curvature is substantially identical to the curvature of the land surface making the depth of that portion constant along its surface relative to the land surface. The depression may further comprise a sub-depression. Alternatively, the depression may further comprise a projection. Additionally, the depression may have a polygonal or circular perimeter.

The invention discloses an aroma improvement method for filter stick forming paper. The method comprises the following steps of: (1) mixing the Yunnan K326 planted in Yunnan and Yunnan Honghuadajinyuan tobacco leaves in a proportion of 1:(1-3), crushing or shredding to obtain a fragrance source, and performing normal-temperature extraction for 48 hours by use of 95-98% of ethanol solution to obtain fragrance extract; (2) performing pressure-reduced distillation of the filtrate under the conditions that the vacuum degree is 0.02-0.08MPa and the temperature is 60-85 DEG C, and separating to obtain an aromatic substance with a boiling point of 150-260 DEG C at normal pressure; and (3) coating the aromatic substance on the forming paper in a manner that the aromatic substance accounts for 0.5-4.0% of the mass of the dry forming paper. In the invention, the tobacco aromatic substance is added, and miscellaneous gas is not led in during cigarette suction so as to achieve the aims of increasing the cigarette aroma, regulating the cigarette flavor, improving the comfort and promoting the cigarette suction quality. By selecting proper fragrance and an extraction method and combining a coating method with a drying method, the invention develops a method capable of obviously increasing the aroma and effectively improving the cigarette suction quality without influencing the performance of the filter stick forming paper.

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

The invention provides a high-performance deep-stall wing structure and an aircraft, and belongs to the technical field of aeronautical facilities. The high-performance deep-stall wing structure comprises a wing body and a plasma exciter, the plasma exciter is attached to the back edge of the wing body, and the shape of the wing body is a preset waveform. By means of the high-performance deep-stall wing structure and the aircraft, the aerodynamic performance of the aircraft in the full attack angle scope is improved.

The invention relates to a technology of a waist bridge structure, in particular to the waist bridge structure which can promote the lifting and dropping range and the lifting and dropping stability in a limited range and an operating table of application thereof. The waist bridge structure comprises a dynamic cylinder device, a first connecting base, a second connecting base, a waist bridge fixing base and two U-shaped necks which are symmetrically arranged on the waist bridge fixing base; the first connecting base is connected with the second connecting base through a rotating shaft, and the two U-shaped necks are connected through a stationary shaft. According to the waist bridge structure and the operating table thereof, by means of lifting and dropping of two waist bridge plates and up-and-down movement of guide bearings in the U-shaped necks, the lifting and dropping stability and the lifting and dropping range are greatly improved; meanwhile, by means of the two waist bridge plates, during the operation, medical workers can perform the operation conveniently, the accuracy of the operation is greatly improved, and the time is saved.

The invention relates to a flapping wing type energy obtaining device for controlling lift augmentation by adopting circular rector. A flapping wing is provided with an upper wing surface, a lower wing surface, a front edge and a tail edge, wherein the tail edge has a semi-circular arc shape, a position, which is close to the tail edge, of the upper wing surface is provided with an upper nozzle, aposition, which is close to the tail edge, of the lower wing surface is provided with a lower nozzle, the upper nozzle is symmetric with the lower nozzle, the upper nozzle and the lower nozzle are connected with a jet flow device arranged inside the flapping wing, the jet flow device comprises a pneumatic pump, a pipeline, an alternate valve and a flow jet channel which are successively connected, the flow jet channel comprises an upper channel and a lower channel, which are symmetric and are respectively communicated with the upper nozzle and the lower nozzle; when the flapping wing does lifting movement downwards from the highest position or does lifting movement upwards from the lowest position, the jet flow is sprayed out from the lower nozzle through the lower channel or sprayed outfrom the upper nozzle through the upper channel with the control of the alternate valve. After mixing with outer airflow, the jet flow forms a wall attachment effect along a bent semi-circular tail edge surface, the circular rector can be increased, and the lift force of the flapping wing is remarkably increased, so that the energy obtaining efficiency is improved.

The invention relates to an addictive for greatly improving gasoline octane number and a preparation method thereof. The addictive is prepared by mixing a metal lead-out agent, a detergent, a lipid octane number accelerating agent and a gasoline antiknock addictive MMT under a certain condition. The addictive for greatly improving the gasoline octane number can greatly improve the research octane number (RON) by 3-10 units, has the efficiencies of cleaning, saving energy, supporting combustion and lubricating, can effectively reduce the emission amount of harmful gases such as NOx, CO, HC and the like in automobile exhaust, remarkably improve a three-way catalytic converter of the automobile, has the functions of preventing an automobile engine from being damaged caused by metal deposition and excessively-high gasoline vapor pressure and can remarkably strengthen the protection on the engine. Compared with the traditional iron-based, manganese-based and ether octane-enhancing additive, the addictive improves the gasoline octane number by 3-10 with high improving amplitude of the gasoline octane number and has remarkable economic benefit.

The invention discloses an efficient dyeing process for improving the anti-felting performance of wool fabric. The method includes the following steps that 1), the wool fabric is added into a nano titanium dioxide water solution to vibrate under ultrasonic waves and then dried; 2), after the wool fabric and cationic ceratin graft polymer powder are mixed, the mixture is treated with a negative pressure-positive pressure interaction method under high-speed stirring; 3), the wool fabric is subjected to ultrasonic treatment in the wet air environment; 4), the wool fabric is heated and dyed; 5), the dyed wool fabric is treated with a high-pressure treatment-pressure relief treatment interaction method and then washed and dried. According to the dyeing method, the wool fabric is subjected to aseries of pretreatment, it is promoted that dye seeps into wool fibers, and thus, the dyeing degree of the wool fabric is improved. By means of the method, scale layers of the wool fibers cannot be damaged, and the dyed wool fabric has good anti-felting performance and the capacity of resisting the external physical and chemical effect.

The invention discloses a storage crane based on a parallelogram mechanism. A vehicle frame is a bracket of an n shape of which the opening faces right; a parallelogram lifting and lowering mechanismis installed on the middle of the bracket of the n shape of which the opening faces right; a driving controller drives a lifting and lowering driving mechanism to drive the parallelogram lifting and lowering mechanism to carry out pitching deformation movement; a clamping and grasping mechanism is hinged to the front end of the parallelogram lifting and lowering mechanism so as to carry out corresponding lifting and lowering movement along with the pitching movement of the lifting and lowering mechanism, and the clamping and grasping mechanism keeps a horizontal state; the driving controller controls the clamping and grasping mechanism to grasp and release an article; a movement mechanism is installed on the bottom of the vehicle frame; and the driving controller drives the movement mechanism to drive the vehicle frame to move and steer. The storage crane moves and rotates through the movement mechanism; through the positive and negative rotation movement of a gripper motor, a left clamping jaw and a right clamping jaw are driven to clamp the article in a face-to-face way or loosen the article in an opposite direction; through the positive and negative rotation movement of a lead screw motor, the parallelogram lifting and lowering mechanism is driven to carry out pitching movement, and the clamping and grasping mechanism is driven to synchronously lower and lift to grasp and release articles at different heights. A whole operation is controlled by the driving controller, and electrified control is realized so as to be efficient and save labor.

The invention discloses an automobile seat headrest unlocking assembly. The automobile seat headrest unlocking assembly includes a basic body having a first installation opening and a second installation opening which communicate with each other vertically; a driving push block and a driven push block which can be slidingly arranged in the basic body, wherein one end of the driving push block is elastically supported on the basic body, the other end of the driving push block has a first clamping opening matching the first installation opening, and one end of the driven push block has a second clamping opening matching the second installation opening; a rotor connected to the driving push block and the driven push block, wherein when the driving push block is close to or away from the driven push block, the rotor drives the driven push block to be close to or away from the driving push block; and a clamping tongue, wherein an upper end of the clamping tongue is elastically supported on the basic body, a lower end of the clamping tongue has a locking portion, the clamping tongue and the basic body form a slide fit, and the clamping tongue can lift under the drive of at least one of the driving push block and the driven push block. The automobile seat headrest unlocking assembly is simple and compact in structure, is excellent in reliability, is small in size, can effectively increase lifting and back and forth adjustment range of a headrest, and can greatly improve the practicality and adaptation.

The invention relates to the technical field of factory environment waste gas sampling and monitoring, in particular to a waste gas sampling monitoring device in a factory environment.The device comprises a mounting bottom plate, a first telescopic rod is fixed to the mounting bottom plate, a waste gas detection module is connected to the upper end of the first telescopic rod, a first wire is connected to the waste gas detection module, the first wire is connected with a control cabinet, the upper end of the control cabinet is connected with a display screen, the display screen and the controlcabinet are both fixed to the lower half section of the first telescopic rod, the control cabinet is further connected with a second wire, the second wire is connected with an alarm flashing lamp, the alarm flashing lamp is fixed to the portion, on the right side of the first telescopic rod, of the mounting bottom plate, and steering devices are connected to the lower ends of the four corners ofthe mounting bottom plate. According to the device, the lifting and rotating functions are added on the basis of existing equipment, the application range of the device is wider, meanwhile, the steering devices with a braking function are designed, and the problem about practicability of a slope section is effectively solved.

The present invention provides an electromagnetic valve capable of increasing the lift amount of a valve body, increasing the flow rate, increasing the valve opening holding pressure, and suppressingvalve wear caused by repeated operation or the like without causing a change in performance such as the overall length/size of a valve body and the minimum operating voltage. A plunger (27) and a valve body (20) are disposed so as to be relatively movable in the vertical direction, and a valve opening spring (25) for urging the valve body (20) upward (in the valve opening direction) is provided between the plunger (27) and the valve body (20).

A vehicle which is intended to travel along a downward sloping cable, which is suspended between two supports having a change in elevation. Preferably, the vehicle includes a fuselage, a trolley assembly, a translation system, a seat, a counterweight system, and at least one wing. The trolley assembly is attached to the cable. This connection allows the vehicle to travel along the cable. A counterweight system is included in order to balance the weight of the rider sitting in the seat below the fuselage. This allows the vehicle to easily rotate, via rotary joint, around the cable while traveling along the line. Preferably, the rider can induce roll by either activating ailerons or by rotating one of the wings about the lateral axis in order to increase the lift on one side of the aircraft depending on whether the wings are fixed.

The invention discloses a sectional elastic mould cup which comprises two symmetric cups with elastic structures. A V-shaped neckline is formed at opposite edges of the two cups, the lower edge of each cup is provided with a non-elastic lower support extending along an arc, adjacent ends of the two lower supports are connected with each other through a non-elastic heart-shaped pendant, non-elasticlower picks are arranged on two sides of the heart-shaped pendant, the top of each cup is connected with a bend and a belt loop which are connected with each other, the cups and the belt loops are ofnon-elastic structures, each lower pick is connected with the lower portion of the lower support corresponding to the lower pick, and the upper ends of the lower supports are connected with the bends. The sectional elastic mould cup adopts a sectional elastic structure, fitting of a bra prepared from the sectional elastic mould cup with a human body can be kept in human movement and breath, and the bra has enough tension.

The embodiment of the invention relates to a rudder for a ship, and the rudder is characterized in that: the rudder comprises a rudder main body which controls the ship through wake flow of a propeller, when the lower side end of the rudder main body is observed from side, the rudder main body is in curve shape with downward projection.

The invention provides a longitudinally crossed dual-rotor helicopter. The longitudinally crossed dual-rotor helicopter comprises a first bevel gear, two first steering engines, two shafts, two propeller parts, two operating mechanisms, and two transmission mechanisms with the same transmission structure; each transmission mechanism comprises a second bevel gear, a third bevel gear and a fourth bevel gear, wherein the second bevel gear is engaged with the first bevel gear and in drive connection with the third bevel gear, and the third bevel gear is engaged with the fourth bevel gear; the two transmission mechanisms are arranged at the two sides of the first bevel gear, respectively; the fourth bevel gears of the two transmission mechanisms are corresponding connected with the two shafts one to one, and the two shafts are opposite in rotation direction; the two propeller parts are mounted at the top ends of the two shafts, respectively; the first steering engines are in drive connection with the propeller parts by use of the operating mechanisms, respectively.

The invention discloses a controllable intelligent self-adjusting power-assisted bionic flying wing device which comprises a main framework provided with a human body fixing device; the driving wing surface is connected with the main framework, and a power control device is arranged on the main framework; the direction control side wings are connected with the driving wing surfaces, and a steering control device is arranged on the main framework; the power control device and the steering control device control the flying speed and the flying direction of the flying wing device by controlling the vibration frequency of the active wing face and opening and closing of the direction control side wings respectively. According to the design, through the main framework and the power control device and the steering control device which are arranged on the main framework, the vibration frequency of the active wing surfaces connected with the main framework and the opening and closing of the direction control side wings are controlled, so that bionic flight actions and power-assisted flight are realized, the energy consumption is reduced, the traffic efficiency is improved, and the road traffic pressure is relieved.

The invention relates to the technical field of gas stoves, in particular to a control method for an embedded dry-burning prevention temperature sensor. The temperature sensor comprises a temperaturesensor body, a lifting mechanism and a control system, wherein the lifting mechanism is connected with the temperature sensor body and is used for driving the temperature sensor body to lift and fall;and the control system is used for controlling the lifting stroke of the temperature sensor body. The control method comprises the following steps: S1, judging whether the lifting mechanism needs tolift or not; and when the lifting mechanism needs to lift, entering step S2; S2, driving the lifting mechanism to lift so as to drive the temperature sensor body to lift; S3, judging whether the temperature sensor body is in contact with the bottom of a pot or not, and if the temperature sensor body is in contact with the bottom of the pot, stopping lifting of the lifting mechanism; and S4, judging whether the lifting mechanism needs to fall or not, and if the lifting mechanism needs to fall, driving the lifting mechanism to fall so as to drive the temperature sensor body to fall. By the control method, the lifting stroke of the temperature sensor is controlled to ensure that the temperature sensor is in contact with the bottom of the pot closely, and therefore, the detection precision isimproved.

The invention discloses a method for processing a blade mold of an unmanned aerial vehicle, comprising: a processing step of a master mold core: using a high-speed numerical control milling machine to finely process the master mold core, so that the surface roughness of the manufactured master mold core reaches a first predetermined roughness range within, and make the error of the position of the three blades controlled within the predetermined value range; the processing steps of the male mold core: use a high-speed CNC milling machine to finish the male mold core, and then perform electrode cleaning on the manufactured male mold core, and then use a mirror spark machine EDM is used to process the male core.

The invention discloses a novel helicopter stub wing and a helicopter, which relate to the technical field of helicopters. The stub wing comprises a mounting frame, stub wing bodies are fixedly mounted on the two opposite side faces of the mounting frame, servo motors are fixedly mounted on the inner bottom faces of the stub wing bodies, the output ends of the servo motors are rotationally connected with connecting rods, one ends of the connecting rods are fixedly connected with driving gears, and mounting plates are fixedly connected to the inner top faces of the stub wing bodies; shaft sleeves are fixedly connected to the two opposite side faces of the mounting plate, and rotating shafts are rotationally connected into the shaft sleeves. A servo motor is arranged, the servo motor rotates to drive a connecting rod, a driving gear, a driven gear, a rotating shaft and a lead screw to rotate, and the lead screw is in threaded connection with a thread sleeve, so that the thread sleeve can transversely move on the lead screw, finally, a top plate and a lengthened wing can be driven to move, and the lengthened wing is lengthened; during maneuvering flight, the lift force can be increased, the load of the rotor blades is reduced, and the maximum flight overload can be improved.