Showing papers on "Paddle published in 2017"
TL;DR: The methods used to simulate and characterize hydrodynamics are described and some of the main findings from studies investigating hydrodynamic features in the paddle, basket, and flowthrough dissolution apparatuses are summarized.
Abstract: Fluid velocity local to the dissolving surface will affect the dissolution rate. It is difficult to anticipate what local fluid velocities are present within compendial dissolution apparatuses from set flow rates or stirring rates. A range of qualitative and quantitative velocimetric techniques are available to assess and characterize hydrodynamics. These methods are frequently used in combination with computational fluid dynamics simulations to characterize and simulate hydrodynamics. Dosage form location and motion varies between apparatuses, and the presence of the dosage form itself can impact local hydrodynamics. Each apparatus described has identified hydrodynamic features which may also vary with agitation rate. This review describes the methods used to simulate and characterize hydrodynamics and summarizes some of the main findings from studies investigating hydrodynamics in the paddle, basket, and flowthrough dissolution apparatuses.
30 citations
01 Nov 2017
TL;DR: The results suggest that delay is not represented based on time, but rather as a spatial gain change in visuomotor mapping.
Abstract: To accurately estimate the state of the body, the nervous system needs to account for delays between signals from different sensory modalities. To investigate how such delays may be represented in the sensorimotor system, we asked human participants to play a virtual pong game in which the movement of the virtual paddle was delayed with respect to their hand movement. We tested the representation of this new mapping between the hand and the delayed paddle by examining transfer of adaptation to blind reaching and blind tracking tasks. These blind tasks enabled to capture the representation in feedforward mechanisms of movement control. A Time Representation of the delay is an estimation of the actual time lag between hand and paddle movements. A State Representation is a representation of delay using current state variables: the distance between the paddle and the ball originating from the delay may be considered as a spatial shift; the low sensitivity in the response of the paddle may be interpreted as a minifying gain; and the lag may be attributed to a mechanical resistance that influences paddle’s movement. We found that the effects of prolonged exposure to the delayed feedback transferred to blind reaching and tracking tasks and caused participants to exhibit hypermetric movements. These results, together with simulations of our representation models, suggest that delay is not represented based on time, but rather as a spatial gain change in visuomotor mapping.
19 citations
01 Feb 2017
TL;DR: It was concluded that the kayak paddle power meter tested is a valid means of recording work rate and stroke kinetics during kayaking in the field.
Abstract: The ability to quantify power within the sport of slalom kayaking would provide coaches and athletes objective data to monitor performance. This study determined the validity of a kayak paddle power meter and subsequent relationship between work rate and stroke kinetics. One participant completed multiple trials of a flat-water, straight-line sprint and a sequence of slalom gates at numerous intensities to attain the velocity:power relationship. Laboratory results identified the kayak paddles’ strain gauges were valid and reliable, and field tests presented a cubic relationship for power as a function of velocity in the straight-line sprint (R2=0.982) and the slalom-specific test (R2=0.993). Further analysis of stroke kinetics identified velocity of hand movement at individual peak force capability to be critical in the highest work rates achieved for both slalom and flat-water sprinting. It was concluded that the kayak paddle power meter tested is a valid means of recording work rate and stroke kinetics during kayaking in the field.
14 citations
TL;DR: In this article, the authors used computational fluid dynamics (CFD) modeling to design a novel enclosed Horizontal BioReactor (HBR) equipped with a paddle wheel that incurs low capital and operating costs like raceway ponds, but achieves high productivities like enclosed photobioreactors.
Abstract: Modeling and optimization of key design parameters of bioreactors are critical for development of economically and technically viable algae technologies. The objective of this study is to use computational fluid dynamics (CFD) modeling to design a novel enclosed Horizontal BioReactor (HBR) equipped with a paddle wheel that incurs low capital and operating costs like raceway ponds, but achieves high productivities like enclosed photobioreactors. For the HBR the aspect ratio (length-to-width), paddle wheel diameter and positioning, culture depth, and baffle spacing can be manipulated to achieve adequate flow of the culture that minimizes the formation of low-velocity areas, below 20 cm/s, termed “dead zones”. The CFD procedure focused on minimizing dead volume and power consumption. A small-scale HBR (3 m2 of surface area) was used for development and validation of the hydrodynamic model, whose parameters were calculated using experimental data. The model was then applied to a pilot-scale HBR (40 m2) that is operated outdoors. Placing the paddle wheel at either end of the reactor or incorporating baffles minimized the dead volume. The same effect was also achieved by increasing the size of the paddle wheel or the number of paddle wheels or the depth of the culture. On the other hand, increasing the reactor's aspect ratio resulted in more dead volume, although it decreased power consumption. These findings will be incorporated into the design of large-scale HBRs (200 m2) for commercial deployment.
14 citations
TL;DR: The experience of using free double‐paddle peroneal flaps for extensive lip defect reconstruction is presented.
Abstract: Introduction
Today, reconstructive surgeons offer an array of options to reconstruct the lip defects. Herein we present our experience of using free double-paddle peroneal flaps for extensive lip defect reconstruction.
Patients and Methods
From 1996 to 2014, 16 patients with extensive lip defects after tumor ablation were included. Free double-paddle peroneal flaps were used for reconstructions. In terms of flap design, one skin paddle superiorly placed on the lateral lower leg was used to reconstruct intraoral defects, whereas the other was inferiorly located and was used to reconstruct extraoral defects. A part of the inner skin paddle was everted, and the suture line with the outer skin paddle became the new vermilion border. A portion of the outer skin paddle could be de-epithelized and tucked into the fold of the inner skin paddle, leading to greater fullness of the new lip.
Results
Skin paddle sizes were 10–15 cm × 3–13 cm and 4–10.5 cm × 2.5–10.5 cm. Venous thrombosis occurred in one patient but was salvaged, and one flap had superficial necrosis over the outer paddle that was conservatively treated. In the 0.5–33 month follow-up period, all patients were able to close their mouths without obvious drooling.
Conclusion
Free double-paddle peroneal flap transfer could augment lip definition, deepen the labial vestibule, and provide an acute-angle oral commissure, leading to satisfactory oral competency and improved cosmetic results. Therefore, this technique may be considered a viable option for extensive lip defect reconstruction.
12 citations
01 Jan 2017
TL;DR: In this article, the development of a high specific power, low stowage volume and lightweight solar paddle utilizing high efficiency, thin-film, InGaP/GaAs/InGaAs inverted metamorphic triple-junction solar cell has been completed The cell exhibits the efficiency of as high as 32% with sufficient radiation resistance.
Abstract: Development of a high specific power, low stowage volume and lightweight solar paddle utilizing high-efficiency, thin-film, InGaP/GaAs/InGaAs inverted metamorphic triple-junction solar cell has been completed The cell exhibits the efficiency of as high as 32% with sufficient radiation resistance Owing to the high efficiency of the cell, the paddle achieved the specific power of greater than 150 W/kg Qualification and reliability tests for the cell and paddle were carried out The results confirmed that both the cell and paddle have enough capability to use them in space Space demonstration of the paddle is now in preparation
12 citations
TL;DR: The results suggest that on-water balance training could be considered as a potential procedure to improve balance control in older adults.
Abstract: In the present investigation we evaluated the effect of stand-up paddle practice on upright postural control in older individuals. Participants were assigned to a group practicing stand-up paddle on seawater or to a walking control group. Balance stability was evaluated in the tandem Romberg and tiptoes postures, comparing the conditions of eyes open versus closed. Results showed that stand-up paddle practice led to reduced anteroposterior and mediolateral amplitudes of body sway in both visual conditions, while walking led to no effect on balance. These results suggest that the challenge of keeping body balance on an unstable board during on-water stand-up paddle practice is transferred to postural tasks performed on a stable support surface, with generalization to sensory and biomechanical conditions different from those experienced during the training. Our results suggest that on-water balance training could be considered as a potential procedure to improve balance control in older adults.
9 citations
Patent•
08 Mar 2017
TL;DR: In this paper, a rotor-wing unmanned aerial vehicle (UAV) is described, which consists of a fuselage and at least two sets of paddle arm assemblies with different specifications, where each set of the paddle arm assembly comprises at least one paddle arm, a motor and a paddle connected with the motor.
Abstract: The embodiment of the invention relates to the technical field of flight vehicles and provides a rotor-wing unmanned aerial vehicle. The rotor-wing unmanned aerial vehicle comprises a fuselage and at least two sets of paddle arm assemblies with different specifications, wherein at least two sets of the paddle arm assemblies with the different specifications can be alternately connected with the fuselage; each set of the paddle arm assembly comprises at least one paddle arm, a motor arranged at one end of the paddle arm and a paddle connected with the motor; and each set of the paddle arm assembly is arranged on the outer side of the fuselage and is detachably connected with the fuselage. The rotor-wing unmanned aerial vehicle provided by the embodiment of the invention comprises at least two sets of the paddle arm assemblies with the different specifications; the paddle arm assemblies can be alternately connected with the fuselage; and a user can mount the paddle arm assemblies meeting the requirements or utilization environments according to the requirements or the utilization environments.
9 citations
11 Dec 2017
8 citations
Patent•
15 Dec 2017
TL;DR: The utility model discloses a soil remediation device, include the box, bottom half is equipped with the support base, and box one end is equipment with the feed inlet, and the other end is equipments with the discharge gate as discussed by the authors, which can realize stirring, conveying medicine of smashing, add of soil, and soil repair effect is good.
Abstract: The utility model discloses a soil remediation device, include the box, the bottom half is equipped with the support base, and box one end is equipped with the feed inlet, and the other end is equipped with the discharge gate, and the feed inlet communicates the crushing unit who sets up in the top, fixed the being equipped with explosive box in box upper end, and body cavity is equipped with and conveys the subassembly and spout the medicine subassembly, spouts the medicine subassembly and includes sparge pipe and hydrojet head, and it has a plurality of trompils to open on the sparge pipe, and the hydrojet head sets up in trompil department, and the sparge pipe communicates the explosive box, conveys the paddle of subassembly on conveying screw rod and setting are conveying the screw rod outer wall, the utility model discloses structural design is novel, can realize stirring, conveying the medicine of smashing, add of soil, and soil repair effect is good
TL;DR: This article developed an open-access database for Swift Creek Complicated stamped ceramics, a type of pottery common to Georgia, eastern Alabama, and northern Florida in the Middle and Late Woodland periods between ca. cal A.D. 100 and 800.
Abstract: We describe the development of an open-access database for Swift Creek Complicated Stamped ceramics, a type of pottery common to Georgia, eastern Alabama, and northern Florida in the Middle and Late Woodland periods between ca. cal A.D. 100 and 800. The characteristic stamped designs on Swift Creek pottery, created by impressing a carved paddle into a clay vessel before firing, provide unique signatures that enable archaeologists to identify paddle matches—multiple vessels, sometimes hundreds of kilometers apart, stamped with a single paddle. These paddle matches potentially allow archaeologists to trace social interactions across hundreds of kilometers with high spatial and temporal resolution. To date, however, this potential has been hindered by the limited accessibility and fragmented nature of the dataset of reconstructed designs. The database we describe integrates paddle designs with other pertinent data for identifying paddle matches and their context, including the results of sourcing and technofunctional analyses and absolute dating. We view this database not only as a critical component of our own research, but also as a platform for collaboration among researchers that will facilitate broad syntheses of the region.
Patent•
06 Oct 2017
TL;DR: In this paper, a connector system includes a housing with a paddle card that includes a plurality of rows of signal terminations and a single row of cable terminations, and a shield member is used to improve the electrical performance of the signal termination.
Abstract: A connector system includes a housing with a paddle card. One side of the paddle card includes a plurality of rows of signal terminations. Another side of the paddle card includes a single row of cable terminations. Cable management members may be used to support the rows of signal terminations. A shield member may be used to improve the electrical performance of the signal terminations.
Patent•
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31 May 2017
TL;DR: In this paper, a fatigue test device consisting of a test fake member, a centrifugation loading device connected with one end of the test real member, swing loading device, a vibration loading device and a pull bar load loading device connecting with a bearing-less rotor paddle hub swing support arm was presented.
Abstract: The invention discloses a fatigue test device. The fatigue test device comprises a test fake member, a centrifugation loading device connected with one end of the test fake member, a swing loading device connected with the test fake member, a vibration loading device connected with the test fake member, and a pull bar load loading device connected with a bearing-less rotor paddle hub swing support arm, wherein the other end of the test fake member is connected with one end of the bearing-less rotor paddle hub swing support arm. The test device is advantaged in that boundary conditions pf the bearing-less rotor paddle hub swing support arm during mounting and loading can be accurately simulated, fatigue test on the bearing-less rotor paddle hub swing support arm can be carried out, and the excellent effect is realized through test verification and test data analysis.
Patent•
25 Jan 2017
TL;DR: In this article, a movable platform with a diameter variable wheel and capable of driving on the water has been designed, which can be used for working amphibiously; and the diameter of the wheel can be changed, and the obstacle crossing ability of the movable platforms is increased.
Abstract: The invention discloses a diameter-variable movable platform of an amphibious wheel, and has relatively great meaning on designing a movable platform with a diameter-variable wheel and capable of driving on the water. Each diameter-variable wheel mechanism is driven by a motor of a vehicle body assembly; the wheel of each diameter-variable wheel mechanism comprises a duplex cam, a push rod assembly with a paddle wheel rim, a wheel hub and a spring; each duplex cam comprises two cams; adjacent convex contact surfaces of the cams are connected through a concave transition arc surface; locking holes are formed in the tops of the convex contact surfaces and the bottoms of the concave transition arc surfaces; each push rod assembly with the paddle wheel rim comprises an arc-shaped wheel rim plate, a paddle plate and a push rod; a limiting hole of each wheel hub sleeves the push rod of each push rod assembly with the paddle wheel rim; a cam pair is composed of the end faces of inner ends of the push rods and the duplex cams; and the two ends of the springs are respectively in contact with flanges of the push rods and the inner side surfaces of the wheel hubs. The diameter-variable movable platform can be used for working amphibiously; and the diameter of the wheel can be changed, and the obstacle crossing ability of the movable platform is increased.
Journal Article•
TL;DR: In this paper, the authors conducted a performance analysis of a national level SUP marathon race and found that there was a variation in distance covered (13.3km-13.9km), peak speed (18.8 km/hr-26.4km/hr) and only moderate correlations of race result to distance covered.
Abstract: Stand up paddle boarding (SUP) is a rapidly growing sport and recreational activity in which little scientific research exists. A review of the literature failed to identify a single article pertaining to the physiological demands of SUP competition. The purpose of this study was to conduct a performance analysis of a national level SUP marathon race. Ten elite SUP athletes (6 male, 4 female) were recruited from the Stand Up Paddle Surfing Association of Australia to have their race performance in the Australian Titles analyzed. Performance variables included SUP speed, course taken and heart rate, measured with a 15Hz GPS unit. Results demonstrated that there was a variation in distance covered (13.3km-13.9km), peak speed (18.8km/hr-26.4km/hr) and only moderate correlations (r=0.38) of race result to distance covered. Significantly greater amounts of time were spent in 5-10km/hr speed zones (p<0.05) during the race. Peak heart rate varied from 168-208bpm amongst the competitors with the average heart rate was 168.6±9.8bpm. Significantly higher durations were spent in elevated heart rate zones (p<0.05) with participants spending 89.3% of their race within 80-100% of their age-predicted HRmax. Marathon SUP races appear to involve a high aerobic demand, with maintenance of near max heart rates required for the duration of the race. There is a high influence of tactical decisions and extrinsic variables to race results. These results provide a greater understanding of the physiological demands of distance events and may assist in the development of specialised training programs for SUP athletes.
Patent•
19 Dec 2017
TL;DR: In this article, an amphibious self-supporting ocean waste collection device has solved the problem of refuse collection on sandy beach and the ocean, where the control center who is equipped with a power device in the frame and links to each other with power device, the up end of frame equipped with the collecting box, and the collection mouth department of collecting box equipped with manipulator, the both sides of terminal surface were equipped with track and made the track move under the frame action wheel and a plurality of driving wheel of following.
Abstract: The utility model discloses an amphibious self -supporting ocean waste collection device has solved the problem of refuse collection on sandy beach and the ocean. The control center who is equipped with power device in the frame and links to each other with power device, the up end of frame is equipped with the collecting box, and the collection mouth department of collecting box is equipped with the manipulator, is equipped with flotation device on the collecting box, the both sides of terminal surface were equipped with the track and made the track move under the frame action wheel and a plurality of driving wheel of following, at least one be equipped with the paddle in the follow driving wheel. The utility model discloses when being in the land position, the accessible track goes in the land, and in the time of in being in the sea water, flotation device can let it attach on the sea, and power device provides power for the paddle from the driving wheel in can be at water surface navigation, and control center control of manipulator can collect in the water rubbish with the land.
TL;DR: The emergence of the Swift Creek style tradition represents a shift from two or three simple carved paddle designs to many thousands of unique paddle designs by middle Swift Creek then back to mere... as discussed by the authors.
Abstract: The emergence of the Swift Creek style tradition represents a shift from two or three simple carved paddle designs to many thousands of unique paddle designs by middle Swift Creek then back to mere...
Patent•
31 May 2017
TL;DR: In this article, the utility model discloses a screw, power component and aircraft, the screw includes the paddle, the diameter of screw is 1600mm 100mm, the paddle with screw pivot center apart does 20% radial department on the screw, the maximum camber of the cross section wing section of paddle is 4% chord length, and the maximum gauge is 4%.
Abstract: The utility model discloses a screw, power component and aircraft, the screw includes the paddle, the diameter of screw is 1600mm 100mm, the paddle with screw pivot center apart does 20% radial department on the screw, the maximum camber of the cross section wing section of paddle is 4% chord length, and the maximum gauge is 4% chord length, the paddle with screw pivot center apart does 25%~100% radial department on the screw, the cross section wing section maximum camber of paddle is 6% chord length, and the maximum gauge is 4% chord length. Screw, power component and aircraft designs at maximum camber, the maximum gauge of the cross section wing section at different positions through diameter to the screw and paddle, can improve the pneumatic efficiency of screw, reduces the input power of screw.
Patent•
13 Jun 2017
TL;DR: In this article, a paper pulp stirrer with a lifting paddle is described, and the improvement is shown as follows: a lifting guide post on the upper plane of the base cover plate is positioned between the drive motor and the flat-bottom stirring tank, a hydraulic lifting cylinder is positioned at the upper end of the hydraulic lifting cylinders, a lifting and stirring part is arranged at the other end of a lifting cross beam, a square blind hole and the rotary stirring paddle are arranged under the lifting part, and a rotary paddle is positioned in an opening cavity of the flat
Abstract: The invention relates to the technical field of papermaking, in particular to a paper pulp stirrer with a lifting paddle A stirrer base comprises a base bottom plate, a base peripheral plate and a base cover plate; a motor shaft through hole is formed in one side on the upper plane of the base cover plate; a drive motor is arranged above the motor shaft through hole; a flat-bottom stirring tank is arranged on the other side on the upper plane of the base cover plate; the improvement is shown as follows: a lifting guide post on the upper plane of the base cover plate is positioned between the drive motor and the flat-bottom stirring tank, a hydraulic lifting cylinder is positioned between the lifting guide post and the flat-bottom stirring tank, a lifting cross beam is arranged at the upper end of the hydraulic lifting cylinder, a lifting and stirring part is arranged at the other end of the lifting cross beam, a square blind hole and the rotary stirring paddle are arranged under the lifting and stirring part, and the rotary stirring paddle is positioned in an opening cavity of the flat-bottom stirring tank; a drive bearing pedestal and a driven bearing pedestal are arranged on the base bottom plate; a stirring tank inner barrel is arranged on the flat-bottom stirring tank, and a driven shaft penetrates through a stirring tank through hole, so that a sealing device is omitted, and the contact between a sealing position of the driven shaft and paper pulp with acidity and alkalinity is avoided; the operation is safer
Patent•
22 Mar 2017
TL;DR: In this paper, a multi-paddle coordination control distribution method for a ship is presented, where the Lyapunov stability principle is used to design a ship motion controller according to the speed/course deviation state, and the expected longitudinal and transverse resultant force and heading torque are output to a control distributor; the control distributor adjusts a propeller thrust control distribution policy, and distributes the expected resultant force/torque output by the motion controller to a number of propeller propulsion devices to generate thrust to propel the ship to move.
Abstract: The invention belongs to the field of ship propeller thrust control, and particularly relates to a multi-paddle coordination control distribution method for a ship. The method provided by the invention comprises the steps that a ship speed/course expectation value is input through man-machine interaction of a manipulation station, and then is compared with a ship speed/course measured value measured by a GPS/platform compass to acquire a speed/course deviation state quantity; the Lyapunov stability principle is used to design a ship motion controller according to the speed/course deviation state; expected longitudinal and transverse resultant force and heading torque are output to a control distributor; and the control distributor adjusts a propeller thrust control distribution policy, and distributes the expected resultant force/torque output by the motion controller to a number of propeller propulsion devices to generate thrust to propel the ship to move. The control distribution method is easy to implement, is highly efficient, can conveniently carry out modular integration with a high-level motion controller to jointly realize multi-propeller coordination control of the ship.
Patent•
11 Jul 2017
TL;DR: In this paper, a paddle surface polishing method is described, which includes the steps that a paddle is levelled, and the position of the paddle is fixed; a conical grinding wheel polishing path is planned; the posture of the conical wheel is adjusted; the paddle was polished, gas pressure in a gas flotation spindle is monitored in real time through a pressure sensor in the polishing process, and accordingly grinding force is detected in real-time; and grinding force compensation and conical ground wheel posture readjustment are conducted.
Abstract: The invention discloses a paddle surface polishing method. The method includes the steps that a paddle is levelled, and the position of the paddle is fixed; a conical grinding wheel polishing path is planned; the posture of a conical grinding wheel is adjusted; the paddle is polished, gas pressure in a gas flotation spindle is monitored in real time through a pressure sensor in the polishing process, and accordingly grinding force is detected in real time; and grinding force compensation and conical grinding wheel posture readjustment are conducted. According to the paddle surface polishing method, the degree of automation is high, the polishing path of the paddle can be planned automatically, the method can be suitable for a complex paddle hook face, the tilting angle of the conical grinding wheel can be adjusted automatically, and accordingly the conical generatrix of the conical grinding wheel and the paddle hook face are kept consistent; and meanwhile, the grinding force can be controlled within a set range, and thus polishing precision is made high.
Patent•
17 Nov 2017
TL;DR: In this paper, a juicing fruits equipment, including the shell, the top right side of shell is equipped with pan feeding mouth, the inside right-hand member of shell equipped with the 2nd driving motor, the left side of fixed plate equipped with screen barrel, the outer wall center department of bull stick equipped with crushing paddle, which comprises an outer shell, left end that presses the juice roller is attached with pylon, the bottom center department equipped with liquid outlet, screen barrel's bottom left side isequipped with fixed export.
Abstract: The utility model discloses a juicing fruits equipment, including the shell, the top right side of shell is equipped with the pan feeding mouth, the inside right -hand member of shell is equipped with the 2nd driving motor, the 2nd driving motor's left end is equipped with the bull stick, the left side of fixed plate is equipped with screen barrel, the outer wall center department of bull stick is equipped with crushing paddle, which comprises an outer shell, the left end that presses the roller is equipped with pylon, the bottom center department of shell is equipped with the liquid outlet, screen barrel's bottom left side is equipped with fixed export. This juicing fruits equipment, through unloading pipe, crushing paddle and the cooperation of press for extracting juice roller, fruit is avoided splashing to pan feeding mouth department with the in -process juice of squeezing the juice crushing manage entering screen barrel through the unloading in, and the 2nd drive motor drive bull stick is rotatory, and crushing paddle carries out thorough foundation powder bits of broken glass to fruit, and the press for extracting juice roller is squeezed the juice to fruit, and the working strength of roller is pressed in the reduction, has improved the life of juice extractor.
Patent•
10 May 2017
TL;DR: In this paper, a coaxial different-speed combined paddle reactor is used in synchronous saccharifying fermentation of biomass-based ethanol production, where a cylindrical vertical vessel and a stirring device are axially installed in the vessel.
Abstract: The invention relates to a coaxial different-speed combined paddle reactor which is used in synchronous saccharifying fermentation of biomass-based ethanol production. The reactor comprises a cylindrical vertical vessel and a stirring device axially installed in the vessel, wherein the comprises a helical ribbon type stirring paddle helically arranged around a stirring shaft from top to bottom, a lower layer stirring paddle installed on the stirring shaft near the lower part of the cylindrical vertical vessel, and a bottom stirring paddle installed at the bottom end of the stirring shaft at the bottom of the cylindrical vertical vessel. According to the invention, a three-blade combination mode is adopted, so that the effects of shearing and circulating materials are achieved; under the combined action of the above two flows, the materials added into the reactor can be quickly mixed, so that the energy consumption distribution in a stirring tank is more uniform, thereby realizing efficient utilization of energy; the reactor can solve the problem of wall sticking of the materials near the wall surface; the reactor reinforces heat transfer, promote uniform suspension of granules and is simple in structure; the structure and operation parameters can be easily adjusted; and the reactor is convenient to process, manufacture and install.
TL;DR: The results, together with simulations of the representation models, suggest that delay is not represented based on time, but rather as a spatial gain change in visuomotor mapping.
Abstract: To accurately estimate the state of the body, the nervous system needs to account for delays between signals from different sensory modalities. To investigate how such delays may be represented in the sensorimotor system, we asked human participants to play a virtual pong game in which the movement of the virtual paddle was delayed with respect to their hand movement. We tested the representation of this new mapping between the hand and the delayed paddle by examining transfer of adaptation to blind reaching and blind tracking tasks. These blind tasks enabled to capture the representation in feedforward mechanisms of movement control. A Time Representation of the delay is an estimation of the actual time lag between hand and paddle movements. A State Representation is a representation of delay using current state variables: the distance between the paddle and the ball originating from the delay may be considered as a spatial shift; the low sensitivity in the response of the paddle may be interpreted as a minifying gain; and the lag may be attributed to a mechanical resistance that influences paddle9s movement. We found that the effects of prolonged exposure to the delayed feedback transferred to blind reaching and tracking tasks and caused participants to exhibit hypermetric movements. These results, together with simulations of our representation models, suggest that delay is not represented based on time, but rather as a spatial gain change in visuomotor mapping.
Patent•
11 Jan 2017
TL;DR: The utility model relates to an unmanned vehicles provides a can vertical folding unmanned aerial vehicle, include the fuselage of vertical setting and be close to two at least horns of the upper end department level extension of fuselage are in each the horn is kept away from the tip department of fueline all is provided with paddle subassembly, each the Horn with be rotatable coupling between the fueline, it rotates the axis and is horizontal direction and perpendicular to the length direction of horn.
Abstract: The utility model relates to an unmanned vehicles provides a can vertical folding unmanned aerial vehicle, include the fuselage of vertical setting and be close to two at least horns of the upper end department level extension of fuselage are in each the horn is kept away from the tip department of fuselage all is provided with paddle subassembly, each the horn with be rotatable coupling between the fuselage, it rotates the axis and is horizontal direction and perpendicular to the length direction of horn. The utility model discloses an unmanned aerial vehicle, when being in the state of flight, each horn average level expandes, can effectively guarantee the unmanned aerial vehicle smooth flight, and when being in non - flight status, and the paddle that can control each paddle subassembly earlier rotates to with to correspond the horn parallel, then rotates each its subsides of horn messenger downwards by on the fuselage to can optimize unmanned aerial vehicle's occupation space greatly, not only portable can the improvement does benefit to moreover and deposits and transport.
Patent•
15 Feb 2017
TL;DR: In this article, a hot extrusion forming is adopted, wherein an aluminum alloy cast ingot at the temperature of 490-510 DEG C is extruded through an extrusion barrel at the same temperature to form a die at a temperature of 470-480 DEGC.
Abstract: The invention provides a manufacturing process of an aluminum alloy paddle profile. Hot extrusion forming is adopted, wherein an aluminum alloy cast ingot at the temperature of 490-510 DEG C is extruded through an extrusion barrel at the temperature of 440-460 DEG C to form a die at the temperature of 470-480 DEG C. The invention further provides an aluminum alloy paddle manufactured through the method. The manufacturing process is convenient to operate, simple and stable; and the aluminum alloy paddle profile manufactured through the method has excellent mechanical performance, meets various indexes of rotorcraft paddles, and can achieve mass production of the rotorcraft paddles.
Patent•
19 Apr 2017
TL;DR: In this paper, a four-axis triphibian unmanned aerial vehicle (UAV) is described, including the main part, the UAV main part includes the frame, the ballast tank is installed to the bottom of frame, first camera is installed at bottom of ballast, the mid-mounting of the upper end of frame has the second camera, rotate in the frame and install first paddle, second paddle, third paddle and fourth paddle, the inside flight control unit that is equipped with of frame.
Abstract: The utility model discloses a four -axis triphibian unmanned aerial vehicle, including the unmanned aerial vehicle main part, the unmanned aerial vehicle main part includes the frame, the ballast tank is installed to the bottom of frame, first camera is installed to the bottom of ballast tank, the mid -mounting of the upper end of frame has the second camera, rotate in the frame and install first paddle, second paddle, third paddle and fourth paddle, the inside flight control unit that is equipped with of frame, a flight control unit is connected with a motor drive unit, the 2nd motor drive unit, the 3rd motor drive unit and fourth motor drive unit through the electric conductor respectively. The utility model discloses simple structure, design benefit, can convenient to use be aloft the surface of water triphibian navigation under water to respectively install a camera unmanned aerial vehicle upper and lower, realize overlooking in the air take photo by plane, simultaneous observation around the simultaneous observation condition when condition, dive navigation mode in the air and under water during water surface navigation.
Patent•
29 Aug 2017
TL;DR: In this article, a folding paddle is used to hold the blades of a folding blade and a spacer is provided to provide an elastic jointing force for the connecting end of the blade.
Abstract: A paddle clip (11) of a folding paddle is used for holding blades (15) of the folding paddle; the paddle clip (11) comprises an upper paddle clip (101) and a lower paddle clip (103) arranged in opposite; a clamping space used for clamping connecting ends (151) of the blades is formed between the upper and lower paddle clips (101, 103); a spacer (17) abuts against either the space between the connecting end (151) and the upper paddle clip (101) or the space between the connecting end and the lower paddle clip (103), or both spaces are provided with the spacers; the spacer (17) provides an elastic jointing force for the connecting end of the blade, so the paddle clip (11) can elastically clamp the blades (15). The invention also provides the folding paddle, a power suit and an unmanned aerial vehicle.
Patent•
31 May 2017
TL;DR: In this article, the center of gravity of a controllable-pitch propeller was measured using a two-axis tilt angle sensor and a V-shaped aligning device.
Abstract: The invention relates to a device and a method for measuring the center of gravity of a paddle of a controllable-pitch propeller The device comprises a machine seat, a lifting mechanism, weighing sensors, a measuring table, a V-shaped aligning device, a paddle support component and a two-axis tilt angle sensor, wherein the V-shaped aligning device is fixedly arranged on the measuring table and is used for placing a paddle chassis; the paddle support component is used for supporting a paddle blade; the two-axis tilt angle sensor is placed on the flat surface of the upper surface of the paddle blade The method comprises the steps of establishing a coordinate system of the measuring table, inputting the positions of three center of gravity measurement points, weighing under the condition of no load, leveling the paddle, weighing the paddle, calculating the position of the center of gravity of the paddle, and the like A double-layer structure is adopted, and the three weighing sensors can contact the measuring table at the same time and are stressed at the same time, so that the weighing sensors are protected; the paddle is convenient to install; the paddle chassis is installed on the V-shaped aligning device, so that the device has an automatic alignment function and also can adapt to the measurement of centers of gravity of paddles with multiple different specifications Furthermore, the device and the method can realize two-time measurement, and are convenient in measurement and small in calculation error