Настройки

Укажите год
-

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

Подробнее
-

Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

Подробнее

Форма поиска

Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Укажите год
Укажите год
Применить Всего найдено 4. Отображено 4.
02-05-2023 дата публикации

Satellite product maintainability time parameter prediction method

Номер: CN116051068A
Автор: WANG ZONGREN, ZHOU SURUN, GUO JIN'AI, WANG SHIQING, WEI XIAONAN
Принадлежит:

The invention discloses a satellite product maintainability time parameter prediction method, which comprises the following steps: determining system function levels and related fault modes, and carding to obtain a fault mode list; determining maintainability prediction parameters and maintenance time elements; constructing to obtain a maintainability prediction model; on the basis of the fault mode list, for each fault mode, predicting the value of each maintenance time element item by item according to the specific maintenance scheme of each fault mode; and according to the summarizing result of the predicted values of the maintenance time elements, combining with the maintainability prediction model, and calculating to obtain predicted values of the maintainability prediction parameters. According to the method, the relationship between the satellite maintenance time parameter and each maintenance time element, the on-orbit maintenance strategy, the fault rate, the single event upset ...

Подробнее
Номер записи: 1
06-06-2023 дата публикации

High-temperature-resistant solid emulsifier for oil-based drilling fluid as well as preparation method and application of high-temperature-resistant solid emulsifier

Номер: CN116217472A
Автор: GUO JIN'AI, XIE JIANYU, KUNIYASU YOHEI, ZHOU YAXIAN, WANG XUEJING, DING XIAOLEI
Принадлежит:

The invention provides a high-temperature-resistant solid emulsifier for oil-based drilling fluid as well as a preparation method and application of the high-temperature-resistant solid emulsifier, the solid emulsifier has a structure as shown in a formula 1, for example, R1 is C9-C22 linear alkyl; r2 is (CH2) m, and m is an integer from 1 to 20. The high-temperature-resistant solid emulsifier is prepared from a specific diamino compound, binary acid, aliphatic amine and a substituted or unsubstituted alkyl sulfonic acid monomer according to the molar ratio of 1: (1-2.5): (0.5-2): (1-3) through three-step reaction. The solid emulsifier with an aggregation structure and strong internal acting force can be formed through hydrogen-bond interaction between groups and molecules, meanwhile, the high-temperature resistance of the emulsifier is improved by introducing aromatic rings and sulfonic acid groups, and the emulsifier is strong in high-temperature resistance, can resist the temperature ...

Подробнее
Номер записи: 2
12-05-2023 дата публикации

Foaming agent for oil-based drilling fluid as well as preparation method and application of foaming agent

Номер: CN116103021A
Автор: XIE JIANYU, LIU GUANGCHENG, KUNIYASU YOHEI, LU GUOLIN, GUO JIN'AI, LYU YUEBIN
Принадлежит:

The invention provides a preparation method of a foaming agent for oil-based drilling fluid, which comprises the following steps: reacting an amino compound, an acid-binding agent, an organic solvent and a fluorine-containing compound to obtain a reaction product; and adjusting the pH value of the reaction product to 4-6 to obtain the foaming agent for the oil-based drilling fluid. The invention further provides the foaming agent for the oil-based drilling fluid and application of the foaming agent. The foaming agent for the oil-based drilling fluid can remarkably reduce the surface tension of diesel oil, has high foaming capacity and foam stability in the diesel oil, and can be used for preparing the oil-based foam drilling fluid.

Подробнее
Номер записи: 3
12-05-2023 дата публикации

Preparation method and application of oil-based flow pattern regulator

Номер: CN116103020A
Автор: XIE JIANYU, LIU XIAOYAN, GUO JIN'AI, WU JIAN, LIANG QINGLEI, WANG QING
Принадлежит:

The invention provides a preparation method of an oil-based flow pattern regulator, which comprises the following steps: carrying out first reaction on polybasic acid A and polyamine to obtain a first reaction product; carrying out second reaction on the first reaction product and polybasic acid B to obtain a second reaction product; and carrying out third reaction on the second reaction product and a diluent to obtain the oil-based flow pattern regulator. According to the high-temperature-resistant oil-based flow pattern regulator capable of regulating the rheological property of the oil-based drilling fluid, the polybasic acid containing a benzene ring structure is introduced into the molecules of the flow pattern regulator, so that the temperature resistance of the flow pattern regulator is improved. The prepared oil-based flow pattern regulator is good in temperature resistance and long in acting time, the rheological property of the oil-based drilling fluid under the high-temperature ...

Подробнее
Номер записи: 4