Настройки

Укажите год
-

Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

Подробнее
-

Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

Подробнее

Форма поиска

Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Укажите год
Укажите год
Применить Всего найдено 20. Отображено 20.
30-06-2023 дата публикации

Method for preparing sand mold by blowing air curing method and mold

Номер: CN116352027A
Автор: ZHANG YOUSHOU, YIN ZESHEN, LIU YE, XIA LU, CHANG YONG-KIL
Принадлежит:

The invention discloses a method for preparing a sand mold through an air blowing curing method and a mold. The method comprises the steps that superfine fused magnesia powder, a silane coupling agent and a phosphate binder are taken and sequentially mixed with crude sand, and the sand mold is prepared; wherein the sand mold is prepared by adopting an air blowing curing method; and the air blowing curing method adopts a mold which is internally provided with a conical air blowing pipe with a hole. Compressed air is fed into the sand mold through channels such as a conical pipe with holes and a mold sample blowing hole, water contained in the sand mold is taken away when the compressed air overflows, the overall curing speed of the phosphate burnt-on sand mold is increased, and the technical problems that in actual production, a thick and large sand mold is low in curing speed and hard and not thorough are solved.

Подробнее
Номер записи: 1
18-07-2023 дата публикации

Supercritical rotor wing type with remarkably improved high-speed characteristic based on forward paddle concept

Номер: CN116443245A
Автор: ZHAO HUAN, FENG CONG, GAO ZHENGHONG, XIA LU, ZHAO KE
Принадлежит:

The invention provides a supercritical rotor wing type with remarkably improved high-speed characteristic based on a forward blade concept. The radius of the leading edge of the wing type is 0.00376, the maximum thickness of the wing type is 0.0904, the wing type is located at the 39.3% chord length of the wing type, the maximum camber is 0.0101, and the wing type is located at the 14.2% chord length of the wing type. Compared with a classic forward paddle OA309 with the thickness of 9%, the radius of the front edge of the airfoil is reduced, and when the radius is larger than 0.6 Mach, the airfoil has the larger lift-drag ratio under the same incoming flow. Compared with the OA309, the airfoil profile has a smaller maximum camber, and the maximum thickness position is moved to a 39.3% chord line position compared with a 33% chord line position of the OA309, so that the shock wave strength is effectively weakened, and the aerodynamic characteristics of the airfoil profile are improved.

Подробнее
Номер записи: 2
27-06-2023 дата публикации

Transonic speed wing optimization design method based on novel high-dimensional agent model

Номер: CN116341097A
Автор: ZHAO HUAN, GAO ZHENGHONG, XIA LU
Принадлежит:

The invention provides a transonic wing optimization design method based on a novel high-dimensional agent model, which combines an adaptive spatial expansion optimization method based on a mixed point adding strategy, a free deformation parameterization method, a dynamic grid technology based on inverse distance weighted interpolation, an intelligent optimization algorithm and the like. An adaptive space expansion global optimization framework based on a novel high-dimensional agent model is established, and global optimization design of a complex aerodynamic configuration can be efficiently completed. High-dimensional transonic speed wing optimization verification shows that compared with a traditional proxy optimization method, the method has the advantages that convergence is faster, wing resistance obtained under the same calculation cost is lower, upper surface shock waves are obviously weaker, and the optimization efficiency and capacity of the proxy optimization method in the high-dimensional ...

Подробнее
Номер записи: 3
29-08-2023 дата публикации

Subsonic high-lift low-resistance laminar flow airfoil profile for middle part of helicopter blade

Номер: CN116654246A
Автор: ZHAO HUAN, LIU YANXU, GAO ZHENGHONG, XIA LU, ZHAO KE, SHI LONGLONG
Принадлежит:

The invention provides a subsonic high-lift low-resistance laminar flow airfoil for the middle of a helicopter blade. The radius of the front edge of the airfoil is 0.00588, the maximum thickness of the airfoil is 13.10%, the airfoil is located at the 30.5% chord length of the airfoil, the maximum camber is 0.0126, the airfoil is located at the 27.7% chord length of the airfoil, and the included angle of the rear edge of the airfoil is 6.78 degrees. And the radius of the leading edge, the maximum thickness and the maximum camber are described by adopting dimensionless dimensions, and the chord length c of the airfoil is taken as a reference. Compared with an NACA 62 (3)-213 classical laminar flow airfoil, the airfoil can push a transition position backwards, a larger laminar flow area is maintained, and the airfoil has a better lift-drag characteristic. And meanwhile, the raising moment can be balanced by increasing the bending degree of the airfoil, so that the airfoil has a lower pitching ...

Подробнее
Номер записи: 4
24-11-2011 дата публикации

METHOD AND DEVICE FOR CALCULATING SCENE FINGERPRINT DIRECTIONS

Номер: WO2011143920A1
Автор: ZHOU, Jie, CHEN, Fanglin, XIA, Lu
Принадлежит:

A method for calculating scene fingerprint directions is disclosed, and the method includes: extracting an effective area in a fingerprint image; calculating a direction diagram of the effective area and confidence of each coordinate point in the effective area; according to the confidence of each coordinate point and a preset confidence threshold, dividing the direction diagram of the effective area into an area with high confidence and an area with low confidence; collecting control points in the area with high confidence, carrying out triangulations to the control points and determining the control points to be added to a set of control points by judging differences; manually marking control points in the area with low confidence on the direction diagram, adding the marked control points to the set of control points and carrying out triangulations; determining if it is needed to add new control points manually marked to the set of control points by judging the differences; and modeling ...

Подробнее
Номер записи: 5
04-04-2023 дата публикации

Anti-hygroscopicity curing agent for inorganic phosphate binder dry-state precoated sand and application of anti-hygroscopicity curing agent

Номер: CN115889680A
Автор: XIA LU, LUO YUAN, ZHANG YOUSHOU
Принадлежит:

The invention provides an anti-hygroscopicity curing agent for inorganic phosphate binder dry-state precoated sand and application of the anti-hygroscopicity curing agent. The curing agent is prepared by adding 0.4% by mass of a coupling agent, 2.0%-3.0% by mass of an inorganic phosphate binder, 0.006%-0.009% by mass of hydrophilic silicon dioxide, 0.83%-1.46% by mass of organic weak acid, 2.5% by mass of a magnesium citrate hydrate, 0.5%-2.0% by mass of a sodium dihydrogen phosphate hydrate and 0.01% by mass of calcium stearate into roasted sand. Dry-state precoated sand prepared through the curing agent has excellent fluidity, shot sand has high moisture absorption resistance after being cured and formed, meanwhile, sand grains are bonded and formed through a binder film, stable strength is achieved, the whole preparation curing speed is high, and the sand core bonding strength is high.

Подробнее
Номер записи: 6
18-04-2023 дата публикации

Wind-light-hydrogen comprehensive energy optimization method and system considering methanation and carbon capture

Номер: CN115983419A
Автор: ZHOU GUIPING, WANG ZHIHONG, WANG SHITAO, LI JINGWEI, WANG JING, JIANG WENJIA, XIA LU
Принадлежит:

The invention provides a wind-light-hydrogen comprehensive energy optimization method considering methanation and carbon capture, and belongs to the field of energy optimization. Comprising the following steps: establishing a wind-light-hydrogen comprehensive energy architecture considering carbon capture and methanation; the method comprises the following steps: establishing a mathematical model of each energy flow conversion and storage device based on a wind-light-hydrogen comprehensive energy architecture considering carbon capture and methanation; based on the mathematical model of each energy flow conversion and storage device, a scheduling model objective function and a capacity configuration objective function are established, constraint conditions of the scheduling model objective function and the capacity configuration objective function are established, the scheduling model objective function is the minimum value of the sum of the energy purchase cost, the wind curtailment and ...

Подробнее
Номер записи: 7
29-08-2023 дата публикации

Low-torque high-resistance divergence Mach number high-speed natural laminar flow airfoil profile suitable for rotor wing

Номер: CN116654250A
Автор: ZHAO HUAN, ZHANG RUIBIN, SHU BOWEN, GAO ZHENGHONG, XIA LU, SHI LONGLONG, ZHAO KE
Принадлежит:

According to the low-torque high-resistance divergence Mach number natural laminar flow airfoil suitable for the rotor wing, the radius of the front edge of the airfoil is large, the flow speed of the front edge is increased, the suction peak value is increased, the airfoil can still have the good torque characteristic at the high speed, and the large-range laminar flow can be maintained; and the rotor wing has excellent resistance divergence characteristic and can be used for high-speed helicopter rotor wing design. Compared with an OA407 airfoil profile, under the condition that the low-speed aerodynamic performance loss is not large, the zero lift torque in the transonic speed state is obviously reduced, and the available Mach number range of the airfoil profile controlled by the torque is obviously increased. In the designed Mach number range, the zero-lift torque coefficient of the airfoil is close to 0, the airfoil has the good low-torque characteristic, and the resistance divergence ...

Подробнее
Номер записи: 8
18-07-2023 дата публикации

High lift-drag ratio supercritical airfoil for blade tip of forward blade concept high-speed helicopter

Номер: CN116443244A
Автор: ZHAO HUAN, FENG CONG, GAO ZHENGHONG, XIA LU, ZHAO KE
Принадлежит:

The invention provides a high lift-drag ratio supercritical airfoil for a blade tip of a forward blade concept high-speed helicopter. The radius of the leading edge of the airfoil is 0.002, the maximum thickness of the airfoil is 0.07, the airfoil is located at the 40.5% chord length of the airfoil, the maximum camber of the airfoil is 0.0092, and the airfoil is located at the 10.4% chord length of the airfoil. Compared with a classic wingtip blade OA407 with the thickness of 7%, the maximum camber of the designed airfoil is reduced, the maximum thickness position moves backwards, and generation of shock waves is delayed through smoother thickness distribution. Compared with OA407, the resistance divergence Mach number of the airfoil is increased by 0.015 and reaches 0.87, the resistance coefficient is obviously reduced, and the torque characteristic is obviously improved.

Подробнее
Номер записи: 9
09-05-2023 дата публикации

Displacement sensor calibration device

Номер: CN116086273A
Автор: WANG YUCHAO, TONG QIANG, YANG KU, ZHAO CONGCONG, MO SHENGNAN, XIAO PEIJUN, MI DEFENG, ZHANG LIHONG, SHI YUE, XIA LU
Принадлежит:

The invention provides a displacement sensor calibration device, which comprises a foot support group 1, a fixed base 2, a rocker arm 3, a movable support arm 4 and a fixed support arm 6, and is characterized in that the lower surface of the fixed base 2 is connected with the foot support group 1, the upper surface of the fixed base 2 is provided with two limiting guide rail grooves 5 and a bearing hole 7, and the fixed support arm 6 is vertically arranged in front of the fixed base 2; the lower layer of the fixed support arm 6 is integrated with the fixed base 2, the middle layer of the fixed support arm 6 is provided with a first hoop 8 with adjustable tightness, the upper layer of the fixed support arm 6 is provided with a second hoop 9 with adjustable tightness, the first hoop 8 is used for fixing a reference digital display caliper 14, and the third hoop 10 is used for fixing a displacement sensor shell to be calibrated; the two sides of the bottom layer of the movable supporting arm ...

Подробнее
Номер записи: 10
08-08-2023 дата публикации

Multi-component alloy material and preparation method thereof

Номер: CN116555620A
Автор: XIA YIBIAO, ZHANG YUNMING, XIA LU, WANG DONGXUAN
Принадлежит:

The invention provides a multi-component alloy material and a preparation method thereof. The multi-component alloy material comprises the following components in percentage by weight: 1wt%-5wt% of Al, 3wt%-5wt% of Mo, 0.01 wt%-0.05 wt% of Ag, 0.03 wt%-0.05 wt% of Hf, 0.2 wt%-0.5 wt% of V, 0.001 wt%-0.003 wt% of Os, 0.01 wt%-0.11 wt% of Ta, 1.2 wt%-5wt% of Mn, 0.01 wt%-0.03 wt% of rare earth elements, 0.01 wt%-0.03 wt% of Sc, 0.1 wt%-0.3 wt% of other elements, 0.0001 wt%-0.0005 wt% of B, 0.001 wt%-0.003 wt% of nano zirconium silicide and the balance of Cu and impurities. The material is good in wear resistance, excellent in mechanical property and excellent in fatigue resistance, heat resistance and corrosion resistance.

Подробнее
Номер записи: 11
27-08-2021 дата публикации

Intelligent stowage device for logistics transportation

Номер: CN214058778U
Автор: LIU LING, LIU SEN, XIA LU, TAN HUI, ZHU QIUYI, ZHANG XINJIE, 刘玲, 刘森, 夏露, 谭辉, 朱秋怡, 张新洁
Принадлежит: UNIV YUNNAN FINANCE & ECONOMICS, YUNNAN UNIVERSITY OF FINANCE AND ECONOMICS, 云南财经大学

The utility model discloses an intelligent stowage device for logistics transportation, which comprises an annular linear motor, the annular linear motor comprises an annular magnetic track and a plurality of rotors, the upper end of each rotor is provided with a cargo carrying disc, and one outer side of the annular magnetic track is provided with a plurality of telescopic belt conveyors; a plurality of goods pushing mechanisms are arranged on one side of the inner side of the annular magnetic track, and each goods pushing mechanism comprises a base, an electric push rod and a first code scanner; a plurality of warehouse-out conveyors are arranged on the outer side of the side, away from the telescopic belt conveyor, of the annular magnetic track, a second code scanner facing the annular magnetic track is arranged at the front end of each warehouse-out conveyor, and a third code scanner facing the inner side is arranged on the side edge of each warehouse-out conveyor; a first identification ...

Подробнее
Номер записи: 12
27-08-2021 дата публикации

Plane sealing type precise pressure relief water-sealed valve

Номер: CN214063873U
Автор: ZHANG ZHONGFENG, XIA LU, 张忠峰, 夏露
Принадлежит: SUZHOU JUFENG ELECTRONICS CO LTD, SUZHOU JUFENG ELECTRONICS CO., LTD., 宿州市矩锋电子有限公司

The utility model discloses a plane sealing type accurate pressure relief water-sealed valve which comprises a valve body, a water-sealed bottle, a water-sealed air pipe, a fixing sleeve, a spring, a diaphragm assembly and an air inlet pipe. An air chamber is arranged in the valve body; the water-sealed bottle is arranged at the lower end of the valve body; the upper end of the water-sealing air pipe communicates with the air chamber; a pressure relief hole is formed in the water-sealed bottle; the fixed sleeve is arranged at the upper end of the valve body; the spring is arranged in the fixed sleeve; the diaphragm assembly is arranged in the air chamber and connected with the lower end of the spring; the lower end of the diaphragm assembly abuts against the upper end of the water seal air pipe. Compared with an existing conical valve element sealing structure, the pressure relief valve has the advantages of being better in sealing effect, good in structural stability and more accurate ...

Подробнее
Номер записи: 13
18-07-2023 дата публикации

Flying wing layout aircraft airfoil design method considering backpack type air inlet channel influence

Номер: CN116451343A
Автор: ZHAO HUAN, ZHANG WEI, GAO ZHENGHONG, XIA LU, ZHAO KE
Принадлежит:

The invention provides a flying wing layout airfoil design method considering the influence of a backpack type air inlet channel, aims at the problem of performance loss of an aircraft air inlet channel caused by poor quality of a flow field in the backpack type air inlet channel, and solves the problem that the coupling influence of the front shape of the air inlet channel on an inner flow field and an outer flow field is not considered in a traditional design method. Two-dimensional processing is carried out on flying wing layout internal flow and external flow integration, a two-dimensional airfoil profile design model considering the backpack type air inlet channel influence is established, and the flying wing layout airfoil profile considering the backpack type air inlet channel influence is obtained through efficient numerical optimization design. Through CFD method analysis, the aerodynamic performance of the airfoil profile designed through the method is superior to that of a traditional ...

Подробнее
Номер записи: 14
02-06-2023 дата публикации

Offshore deepwater self-stabilization wave-resistant floating photovoltaic floating body structure and construction method thereof

Номер: CN116198668A
Автор: REN XIUDI, LI WEI, KUMANE, WANG DEZHI, ZHANG BAOFENG, XIA LU, LV JUN, SHEN KANMIN, GAO SHAN
Принадлежит:

The invention provides an offshore deepwater self-stabilization wave-resistant floating type photovoltaic floating body structure and a construction method thereof, and is suitable for the field of offshore photovoltaic power generation, in particular to the field of offshore floating type power generation in an open open sea field area. According to the floating body platform, the gravity center of the platform is lowered through the concrete heaving plate, the gravity center position is located below the buoyancy center, and a self-stabilization state is formed. Meanwhile, the concrete heaving plate used for lowering the gravity center can provide enough additional damping, and the transverse and longitudinal swing amplitude of the platform is reduced. And the stability of the platform under the high sea condition is ensured. Meanwhile, an arrangement mode and a modular construction mode suitable for the structure are selected, and high practicability is achieved.

Подробнее
Номер записи: 15
30-06-2023 дата публикации

Phosphate binder and preparation method thereof

Номер: CN116352010A
Автор: ZHANG YOUSHOU, TAN QINGHUAN, LIU YE, XIA LU, CHANG YONG-KIL
Принадлежит:

The invention discloses a phosphate binder and a preparation method thereof. The binder is prepared from the following raw materials: 51.524%-52.16% of industrial phosphoric acid; 12.5% to 12.654% of aluminum hydroxide powder; 0.61% to 0.617% of silicic acid; 1.829% to 1.852% of boric acid; 1.22% to 1.235% of light magnesium oxide; 0.617% to 1.829% of sodium copper ethylenediamine tetraacetate; and 30.488%-30.864% of water. The binder provided by the invention has the advantages of high bonding strength, good moisture resistance, low viscosity and good fluidity of the prepared molding sand.

Подробнее
Номер записи: 16
04-08-2023 дата публикации

Dynamic pressure sensor

Номер: CN116539213A
Автор: SONG ERDONG, GONG ZHANJIANG, SUN LIKAI, XIA LU, SHAO ZHIQIANG, CHEN YAZHOU
Принадлежит:

The invention discloses a dynamic pressure sensor, relates to a pressure sensor, and aims to solve the problems of poor sensitivity and small frequency response range of the conventional dynamic pressure sensor. A shell is provided with a cavity, and a pressure sensitive element is arranged in the cavity; the pressure guiding pipe is used for guiding an external dynamic pressure signal into the cavity of the shell; the pressure sensitive element is fixed at the top end of the strip-shaped PCB; the circuit assembly comprises a bootstrap feedback type pre-amplification circuit and an eight-order Butterworth low-pass filter circuit; the bootstrap feedback type pre-amplification circuit is used for reducing the debugging complexity, and the eight-order Butterworth low-pass filter circuit is used for expanding the frequency response range; the impedance matching tube is spirally wound on the strip-shaped PCB; the top end of the impedance matching tube is communicated with the cavity of the shell ...

Подробнее
Номер записи: 17
08-08-2023 дата публикации

Global/local coupled multidisciplinary flying wing layout airfoil family optimization design method

Номер: CN116561892A
Автор: ZHAO KE, ZHANG WEI, GAO ZHENGHONG, ZHAO HUAN, XIA LU, HUANG JIANGTAO, DENG JUN
Принадлежит:

The invention provides a global/local coupled multidisciplinary airfoil family optimization design method, which comprises the following steps of: generating a low-dimensional large-scale design space by utilizing a parameterization method, optimizing by utilizing an agent model global optimization design method, constructing a high-dimensional small-scale design space by utilizing the parameterization method on the basis of a global optimization result, and designing a multi-disciplinary airfoil family. And a multi-disciplinary airfoil family of the flying wing layout is obtained through optimization of a gradient method. According to the method, the advantages of global search performance of an agent model optimization method and local mining performance of a gradient method are combined, the problems that a traditional optimization method is low in convergence speed in a high-dimensional and large-scale design space and prone to falling into local optimum are solved, efficient and high-precision ...

Подробнее
Номер записи: 18
19-05-2023 дата публикации

High-transparency gel type sunscreen cosmetic and preparation method thereof

Номер: CN116135202A
Автор: MA LONG, LIN ZE, HUANG HAIFENG, XIA LU
Принадлежит:

The invention relates to a high-transparency gel type sunscreen cosmetic and a preparation method thereof. The high-transparency gel type sunscreen cosmetic comprises the following components: oryzanol, an organic sun-screening agent, a solvent and an oil phase rheology modifier. The invention provides a brand new sunscreen cosmetic which is clear and transparent in appearance, enriches vision and skin feeling experience, has a high sunscreen index and fills the market blank.

Подробнее
Номер записи: 19
23-06-2023 дата публикации

Efficient coaxial rigid rotor wing type multi-target robust design method

Номер: CN116305534A
Автор: ZHAO HUAN, GAO ZHENGHONG, XIA LU
Принадлежит:

The invention provides an efficient coaxial rigid rotor wing type multi-target robust design method. The advanced airfoil design method capable of optimizing multiple rotor aerodynamic performance indexes at the same time under the complex constraint of coaxial rigid rotor airfoil design and maintaining large-range robustness is constructed, application of the airfoil multi-target design method to the coaxial rigid helicopter airfoil design and other important engineering fields is promoted, and the method has important engineering application value. Compared with a classic OA series airfoil, the airfoil designed by executing the design method has the advantages that under the condition that the medium and low speed characteristics are improved, the high speed characteristic is obviously improved and is more stable, the torque characteristic in all states is obviously better, and the performance index requirement of a new generation of coaxial rigid helicopter rotor airfoil can be met.

Подробнее
Номер записи: 20