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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 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 2. Отображено 2.
28-07-2023 дата публикации

Portable magnetic brinell hardness auxiliary detection device and use method thereof

Номер: CN116499911A
Автор: LI YIMING, ZHANG JIANGUO, CAO JIANFENG, JIANG GUIPING, WANG YANXIANG, CHEN WENDING, LI YILONG, ZHOU GEQIANG, MU SISI
Принадлежит:

The invention discloses a portable magnetic type Brinell hardness auxiliary detection device and a use method thereof, and belongs to the technical field of material mechanical property detection. Comprising a magnetic foot supporting seat and a plurality of circular hoop sections, the magnetic foot supporting seat is used for supporting a magnetic foot of the magnetic brinell hardness tester and enabling an ejector pin for supporting the magnetic brinell hardness tester to reach the surface of a detected workpiece through the magnetic foot supporting seat; the two ends of the magnetic foot supporting seat are respectively and fixedly connected with one circular hoop section, the adjacent circular hoop sections are detachably connected, and a spring is arranged between the adjacent circular hoop sections; and the magnetic foot supporting seat and the plurality of circular hoop sections form an annular structure which is attached to the surface of a detected workpiece along the circumferential ...

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Номер записи: 1
16-05-2023 дата публикации

Miniaturized high-resolution large-view-field lens for space

Номер: CN116125634A
Автор: MEI CHAO, GUO XINYU, WANG HAO, ZHOU GEQIANG, SHI KUI, HE SHUANGLIANG, CHEN WEINING, ZHANG HONGBO, DONG SEN, ZHANG DERUI
Принадлежит:

The invention relates to a fixed-focus optical lens, in particular to a small-sized high-resolution large-view-field lens for space, and aims to solve the problems that in the prior art, a traditional optical lens does not have the thermal vacuum passive compensation capability, and a first lens of a traditional large-view-field lens for space is made of quartz glass, so that the size is large, the imaging spatial resolution is poor, and the imaging cost is high. And meanwhile, the pixel size of the large-view-field lens is large, and the maximum resolution is only 90 lp/mm. The miniaturized high-resolution large-field-of-view lens for the space comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens and an eighth lens which are coaxially arranged in sequence, the eighth lens is arranged at the position close to an image plane, the first lens is an aspheric lens, and the second lens is an aspheric lens. The second lens and the first ...

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Номер записи: 2