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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.
25-07-2023 дата публикации

Valve clack structure capable of adjusting valve circulation characteristics of low-temperature stop valve

Номер: CN116480792A
Автор: HU CHENXI, GUO LIXIN, WANG ZIQI, CAO XIAOQIANG, CAO XIAOFENG, SUN XIAODONG, CHEN ZHENGYANG, LU WENWU, QIAN XIAOFAN, SHEN FENG, TANG MINHONG, LU ZHONGHENG, LI PENGPENG
Принадлежит:

The invention relates to a valve clack structure capable of adjusting valve circulation characteristics of a low-temperature stop valve, which comprises a valve body, an on-off valve clack is connected to an on-off opening of the valve body, a sealing piece used for sealing the on-off opening is embedded below the valve clack, a valve rod is connected to the upper portion of the valve clack, the upper portion of the valve rod is connected with a valve cover, and the valve cover is connected with the valve body. A connecting rod is connected to the lower portion of the valve clack, a plurality of clamping grooves are formed in the radial direction of the connecting rod and distributed in the connecting rod in a staggered mode, a plurality of clamping assemblies are connected into the clamping grooves, and adjusting heads used for different circulation characteristics are connected to the lower portion of the connecting rod through the clamping assemblies. The adjusting head can be rapidly ...

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Номер записи: 1
16-02-2011 дата публикации

Method for optimizing reproduced holographic images of digital micro-mirror

Номер: CN0101976031A
Автор: TE HU, XIAOFAN QIAN, HU TE, QIAN XIAOFAN
Принадлежит:

The invention discloses a method for optimizing reproduced holographic images of a digital micro-mirror. The method comprises the following steps of: acquiring four holographic images by a CMOS record photosensitive element; reducing the four holographic images of CMOS records to be one quarter of the original pixel respectively; then splicing the four reduced holographic images into synthetic aperture holographic images which have the same pixels as those of DMD; and obtaining high-quality reproduced holographic images through the DMD. During synthesizing the aperture holographic images, in order to improve the duty ratio, the holographic images are processed through binaryzation. By using the characteristic that an imaging surface of a lens-less Fourier transform hologram reconstruction image is a plus lens focal plane, the method solves the problem that a holographic imaging surface is generally unfixed; by using the characteristic that the zero-order diffraction is converged nearby ...

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Номер записи: 2
21-07-2023 дата публикации

Pneumatic double-station ultralow-temperature valve normal-temperature and low-temperature pressure test experiment table

Номер: CN116465620A
Автор: HU CHENXI, GUO LIXIN, WANG ZIQI, CAO XIAOQIANG, CAO XIAOFENG, SUN XIAODONG, CHEN ZHENGYANG, LU WENWU, QIAN XIAOFAN, SHEN FENG, TANG MINHONG, LU ZHONGHENG, LI PENGPENG
Принадлежит:

The invention relates to a pneumatic double-station ultralow-temperature valve normal-temperature and low-temperature pressure test experiment table which comprises a support, an air cylinder is connected to the upper portion of the support, a driving shaft of the air cylinder penetrates through the support to be in driving connection with a guide connecting plate, the guide connecting plate is connected with a guide sliding block, the lower portion of the support is connected with a guide sliding rail, and the lower portion of the guide sliding rail is connected with an air cylinder. The guide sliding block is slidably connected along the guide sliding rail, the guide connecting plate is connected with a pressing block, the lower portion of the support is connected with an air inlet connecting plate, the air inlet connecting plate is connected with an air inlet connecting port, and the upper end of the air inlet connecting port corresponds to the pressing block and is in press fit connection ...

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Номер записи: 3
13-04-2011 дата публикации

Phase unwrapping method based on shearing principle

Номер: CN0102012668A
Автор: Qian Xiaofan
Принадлежит:

The invention relates to a phase unwrapping method based on a shearing principle, which comprises the steps of: 1, firstly, carrying out light field shearing interference in a computer; 2, reducing the occurrence frequency of under sampling with a shear algorithm, i.e. dividing two-dimensional holographic representation light compounding field by the shear light filed thereof to obtain a new light field and calculating the phase of the new light field to obtain the gradient of the phase along the transverse or horizontal direction of the two-dimensional holographic representation light compounding field; and 3, calculating the phase of the two-dimensional holographic representation light compounding field by using the gradient of the phase along the transverse or horizontal direction of the two-dimensional holographic representation light compounding field. In the invention, a shearing interference principle is introduced into the reconstruction of the phase of a digital holographic representation ...

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Номер записи: 4