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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

Carbon dioxide heat pump air conditioner heat exchanger for vehicle heat management with refrigerating and heating functions, system and control method

Номер: CN116476593A
Принадлежит:

The invention provides a vehicle heat management carbon dioxide heat pump air conditioner heat exchanger giving consideration to refrigeration and heating, a system and a control method.According to heat exchange, n on-off adjusting structures are arranged in a first main collecting pipe and a second main collecting pipe correspondingly, and by controlling the on-off states of the 2n on-off adjusting structures, the on-off states of the 2n on-off adjusting structures are adjusted to be the same as the on-off states of the 2n on-off adjusting structures; the 2n + 1 areas of the heat exchange channel can be in a series connection circulation state or a parallel connection circulation state, so that the circulation distance of a refrigerant in the heat exchanger can be changed, and the circulation distance of the refrigerant in the heat exchanger can be changed according to refrigerating and heating working conditions; the requirement for the heat exchanger structure in order to achieve better ...

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12-05-2023 дата публикации

Cobalt-loaded Nb2CTx/carbon aerogel as well as preparation method and application thereof

Номер: CN116099463A
Автор: GUO RONGHUI, CUI CE
Принадлежит:

The invention relates to cobalt-loaded Nb2CTx/carbon aerogel as well as a preparation method and application thereof, and belongs to the technical field of preparation of wave-absorbing materials. The technical problem to be solved by the invention is to provide the preparation method of the cobalt-loaded Nb2CTx/carbon aerogel. The method comprises the following steps: continuously loading Nb2CTx and ZIF-67 onto the surface of cellulose aerogel, and further carrying out high-temperature calcination by regulating and controlling the calcination temperature to obtain the cobalt-loaded Nb2CTx/carbon aerogel. The cellulose aerogel is used as the raw material of the porous carbon aerogel skeleton, the cost is low, the process is easy to regulate and control, and the processing stability is high. The cobalt-loaded Nb2CTx/carbon aerogel disclosed by the invention can realize higher point magnetic loss capacity under the condition of lower filling amount of a wave-absorbing agent, has the characteristics ...

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04-04-2023 дата публикации

Mechanical equipment lubrication reliability analysis method and device

Номер: CN115906504A
Принадлежит:

The invention provides a mechanical equipment lubrication reliability analysis method and device. The method comprises the steps that all monitoring index attributes of mechanical equipment lubrication are determined; in the operation process of the mechanical equipment, monitoring index data corresponding to the monitored lubrication monitoring index attributes; calculating an edge distribution joint weight factor of each lubrication monitoring index attribute according to the index data; constructing an oil physical and chemical property reliability Copula function, an oil pollution reliability Copula function and a mechanical equipment wear reliability Copula function according to the index data; according to the edge distribution joint weight factor and the multiple Copula functions, a comprehensive multivariate Copula reliability analysis model is constructed; and determining the comprehensive relative reliability of the mechanical equipment lubrication system according to the model ...

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18-07-2023 дата публикации

Carbon fiber aerogel-hollow Co9S8 polyhedral material as well as preparation method and application thereof

Номер: CN116440815A
Автор: GUO RONGHUI, CUI CE
Принадлежит:

The invention relates to a carbon fiber aerogel-hollow Co9S8 polyhedral material as well as a preparation method and application thereof, and belongs to the technical field of wave-absorbing materials. The technical problem to be solved by the invention is to provide the cobalt-based metal sulfide composite material with excellent wave absorbing performance in a low-frequency wave band. The material takes carbon fiber aerogel as a carrier, and a hollow Co9S8 polyhedron is loaded on the carrier. A ZIF-67 polyhedron is loaded on the surface of fiber aerogel through a chemical deposition technology, a composite material of a carbon fiber aerogel-hollow Co9S8 polyhedron hierarchical structure is prepared through further vulcanization annealing treatment, and the composite material is endowed with richer heterojunction surfaces by constructing the hierarchical structure with a carbon fiber interconnection network as a framework. Multiple reflection and scattering of electromagnetic waves are ...

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