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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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Применить Всего найдено 4. Отображено 4.
22-08-2023 дата публикации

Low-loss high-heat-dissipation packaging structure and method for millimeter wave solid-state power amplifier

Номер: CN116631955A
Автор: CUI XIHUI, FANG JIE, ZHANG RENTIAN, HU ZHUMING, LIAO YUTANG, HE DONG, WANG QIANG, JING XIAODONG
Принадлежит:

The invention discloses a millimeter wave solid-state power amplifier low-loss high-heat-dissipation packaging structure and method, the millimeter wave solid-state power amplifier low-loss high-heat-dissipation packaging structure comprises a power amplifier chip and a packaging structure main body, the power amplifier chip is installed on a heat sink area of the packaging structure main body, the heat sink area is made of a graphite/copper composite material, and the content of graphite is 55%-65%. According to the invention, the heat sink of the power amplifier chip and the packaging box body are manufactured into a whole when the packaging material is manufactured, and the power amplifier chip is directly assembled in the heat sink area of the packaging body, so that one-stage transition is reduced. Therefore, an interface generated when the power amplifier chip heat sink and the assembly packaging box body are assembled is eliminated. The heat dissipation efficiency of the heat dissipation ...

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Номер записи: 1
25-07-2001 дата публикации

Disinfectant

Номер: CN0001304658A
Автор: CUI XIHUI, XIHUI CUI
Принадлежит:

A disinfectant for preventing and eliminating the verticillium wilt, blight and damping-off of agricultural crops contains sulfur powder (18-38 wt.%), lime powder (52-75) and plant ash (5-10). It is applied by spreading it on field and mixing it with soil by ploughing. Its advantages are radical disinfecting and high effect.

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Номер записи: 2
22-04-2015 дата публикации

Large cover plate self-limiting method in laser seal welding

Номер: CN104526162A
Автор: SUN YI, CUI XIHUI, HE WENCAN, CHEN ZHONGRUI
Принадлежит:

The invention provides a large cover plate self-limiting method in laser seal welding. A small projection structure is produced in a groove for placing a cover plate, wherein the groove is formed in the cover plate or a chamber body. when the cover plate and the chamber body are assembled, the interference fit can be formed between the cover plate and the cover plate groove due to the small projection so as to implement the self-limiting in the welding process. Compared with the prior art, the self-limiting of the cover plate can be implemented and the dotting, a pressing block or the mechanical auxiliary limiting is not required in the welding process; the working efficiency is improved for more than 50% in comparison with the dotting and the working efficiency is improved for more than 30% in comparison with the auxiliary limiting through the practice test; the labor intensity is reduced and the product consistency and the yield are improved.

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Номер записи: 3
11-03-2015 дата публикации

Full-automatic laser welding method and full-automatic laser welding device

Номер: CN104400217A
Автор: HE WENCAN, CUI XIHUI, SUN YI
Принадлежит:

The invention provides a full-automatic laser welding method and a full-automatic laser welding device. The method is divided into a preparatory stage and a welding stage. The preparatory stage comprises the following steps: storing track information of to-be-welded welding seams into a computer; marking any one or multiple positions in a pick-up head photographing range which includes a to-be-welded region; setting a welding seam search region based on marks by taking the marks as reference. The welding stage comprises the following steps: collecting image information; searching the mark quantity and position information in images; performing linear detection to obtain the position and angle information of the welding seams and finally generating the actual position and outline tracks of the welding seams. The method can be used for realizing full-automatic laser welding, not only is automatic welding of straight welding seams realized, but also the automatic welding of random welding ...

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Номер записи: 4