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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

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Мониторинг СМИ

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

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Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 2. Отображено 2.
09-06-2023 дата публикации

Three-way joint forming method for extruding magnesium alloy through two channels with same driving direction and extrusion direction

Номер: CN116237386A
Автор: WANG HONGYU, SHI SHENGNAN, LI JIRUI
Принадлежит:

The invention discloses a three-way joint forming method for extruding a magnesium alloy through two channels in the same direction of driving and extruding. A sand core is used for extruding a magnesium alloy blank along the inner wall of an extrusion die; the extrusion die is used for extruding the magnesium alloy blank filled with the sand core through two extrusion channels to form the three-way joint after the magnesium alloy blank is extruded; an extrusion rod abuts against the surface, away from the magnesium alloy bottom, of the sand core to complete extrusion forming of the magnesium alloy blank; wherein the angle formed by the direction of applying the extrusion force to the sand core and the direction of extruding through the two extrusion channels is an acute angle. The sand core is used as the core material, the shape of the magnesium alloy pipe can be well controlled, the technological process is simple, the production efficiency is high, the cost is low, and the surface roughness ...

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Номер записи: 1
23-06-2023 дата публикации

Fuel cell bipolar plate flow field structure for improving mass transfer performance

Номер: CN116314909A
Автор: WANG HONGYU, LI JIRUI, SHI SHENGNAN
Принадлежит:

The invention discloses a fuel cell bipolar plate flow field structure for improving mass transfer performance, which comprises a flow field area formed by a base plate, a first baffle plate and a second baffle plate and used for bearing the fuel cell bipolar plate flow field structure, and the flow field area comprises an upstream area, an intersection area and a downstream area; gas enters the flow field area from the upstream area, sequentially flows through the cross area and the downstream area and then flows out of the flow field area; the first second-order structure is fixedly arranged in the upstream area; the intersection area is used for prolonging the residence time of gas in the flow field area; the second second-order structure is fixedly arranged in the downstream area. The cross region, the first second-order structure and the second second-order structure are designed in the flow field, reaction products are promoted to enter a diffusion layer for reaction, concentration ...

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Номер записи: 2