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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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Применить Всего найдено 2. Отображено 2.
11-04-2023 дата публикации

Rotary grating type rear duct ejector for variable cycle engine

Номер: CN115949528A
Автор: HUANG YUE, LIU RUNFU, WANG QIXING, LIANG ZHUONING, YOU YANCHENG
Принадлежит:

A rotary grating type rear duct ejector for a variable cycle engine can effectively enhance air flow mixing of an inner duct and an outer duct in a low-bypass-ratio mode of the variable cycle engine and improve the mixing efficiency, so that the combustion efficiency of an afterburner is improved. According to the rotary grating type rear duct ejector, 32 gratings located at an outlet of an outer duct rotate to adjust the area, airflow of the outer duct passes through gaps between the gratings, high-strength vortexes can be generated due to the special structures of the gratings when the airflow passes through the gratings, each grating has a certain inclination angle, and therefore the vortex can be generated, and the vortex can be generated. The airflow in the inner culvert can be well diffused to the whole mixing section, so that the airflow in the inner culvert and the airflow in the outer culvert are uniformly mixed to a greater extent, and the mixing distance is greatly shortened.

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Номер записи: 1
17-08-2011 дата публикации

Novel retention and filtration aid system for light paper

Номер: CN0102154934A
Автор: SHUJIAN LI, RUNFU LIU, ZHONGSU TIAN, SHAOBIN HUANG, LI SHUJIAN, LIU RUNFU, TIAN ZHONGSU, HUANG SHAOBIN
Принадлежит:

The invention discloses a novel retention and filtration aid system for light paper, and belongs to the technical field of pulping and papermaking. The novel ternary retention and filtration aid system consists of polyethylene imine, cationic polyacrylamide and anionic polyacrylamide, wherein the polyethylene imine is added into a high level tank and an external white water tank respectively to shield a large amount of interference anionic garbage in the pulp of the light paper and eliminate the negative effect of the anionic garbage on the sequentially added cationic polyacrylamide, so that the cationic polyacrylamide can fully play a role, more positive charge adsorption sites are reserved for the sequentially added anionic polyacrylamide, and the purpose of improving the retention rate of the pulp of the light paper on a net part is fulfilled; and meanwhile, the ternary retention and filtration aid system also reduces the consumption of the cationic polyacrylamide, the anionic polyacrylamide ...

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Номер записи: 2