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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.
11-08-2023 дата публикации

Ballistic three-dimensional transient flow field modeling and multi-physical field numerical calculation method and device

Номер: CN116579259A
Автор: ZHAO QIJIN, MAO BAOQUAN, BAI XIANGHUA, WEI SHUGUANG, CHEN CHUNLIN, WANG CHUANYOU, TIAN HONGGANG, ZHU RUI, WANG ZHIQIAN, LI HUA
Принадлежит:

The embodiment of the invention provides a three-dimensional transient flow field modeling and multi-physical field numerical calculation method and device for a trajectory in an artillery, and the method comprises the steps: constructing a three-dimensional axial symmetry physical model of the artillery according to a slope chamber structure and the gas resistance of a projectile head; on the basis of a step-by-step solving method for the propellant combustion process and the fuel gas flowing process in the chamber, an inner ballistic three-dimensional flow field mathematical model is built according to the three-dimensional axisymmetric physical model; and calculating a multi-physical field numerical value of the inner ballistic three-dimensional flow field mathematical model by adopting a control equation discretization and pressure-speed coupling solution mode.

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Номер записи: 1
13-06-2023 дата публикации

Experimental testing method for forced-convection heat transfer parameters of airflow in cylinder under variable-heat physical parameter condition

Номер: CN116256390A
Автор: BAI XIANGHUA, MAO BAOQUAN, ZHAO QIJIN, WEI SHUGUANG, WU DONGYA, TIAN HONGGANG, WANG CHUANYOU, NIE BIN, ZHOU XUN, CHEN CHUNLIN, ZHU RUI, WANG ZHIQIAN
Принадлежит:

The invention relates to the technical field of airflow forced convection heat transfer parameter testing, in particular to an experimental testing method for airflow forced convection heat transfer parameters in a cylinder under the condition of variable-heat physical property parameters. According to the invention, an experimental system for measuring heat transfer parameters in the circular tube is established, and a method for testing the convection heat transfer Nusselt number of the inner wall surface of the circular tube is provided; the change of the Nusselt number of the inner wall of the circular tube along the flowing direction is calculated, and experimental data is compared with a prediction result of a traditional Gnielinski correlation formula, so that the corrected Gnielinski correlation formula suitable for the condition that thermophysical parameters change along with the fluid temperature is provided. The result shows that the deviation between the experimental value ...

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Номер записи: 2
04-08-2023 дата публикации

Method for testing electron density of detonation product of propellant under extremely high pressure condition

Номер: CN116542051A
Автор: WEI SHUGUANG, BAI XIANGHUA, MAO BAOQUAN, ZHAO QIJIN, XU ZHENHUI, CHEN CHUNLIN, WANG ZHIQIAN, WANG CHUANYOU, ZHOU XUN, TIAN HONGGANG, ZHAO JUNYAN, ZHU RUI, NIE BIN, LI HUA
Принадлежит:

The invention relates to the technical field of propellant detonation product electron density testing, and relates to a propellant detonation product electron density testing method under an extremely high pressure condition. The invention provides an experimental test method for the electron density in a propellant detonation product under an extremely high pressure condition. According to the experimental test method, effective measurement of spectral data of the propellant detonation product under the condition of hundreds of MPa is realized by constructing an experimental system and selecting a high-precision test instrument; the electron density is analyzed from the characteristic spectral line of the combustion product by adopting a park broadening method in combination with a Lorentz function; a background spectrum rejection method based on a self-learning algorithm is proposed to reject continuous background spectral lines from complete spectral lines, and finally characteristic ...

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Номер записи: 3
01-08-2023 дата публикации

Method for testing and analyzing plasma jet heat transfer parameters in circular tube under magnetic-flow-heat multi-field coupling

Номер: CN116519738A
Автор: ZHAO QIJIN, MAO BAOQUAN, CHEN CHUNLIN, BAI XIANGHUA, WEI SHUGUANG, TIAN HONGGANG, WANG CHUANYOU, NIE BIN, XU ZHENHUI, WANG ZHIQIAN, ZHAO JUNYAN, WU DONGYA
Принадлежит:

The invention relates to the field of plasma jet heat transfer parameter analysis, in particular to a method for testing and analyzing plasma jet heat transfer parameters in a circular tube under magnetic-flow-heat multi-field coupling. According to the invention, a heat transfer characteristic experiment system of the plasma jet in the circular tube under the regulation and control of the magnetic field is established, and a test method of magnetic field distribution in the circular tube under the action of the electromagnet and the solenoid and a test method of heat transfer parameters between the plasma jet in the circular tube and the tube wall under the condition of a uniform internal heat source are provided. Through the system and the method, the influence of the electromagnet magnetic field and the solenoid magnetic field on the plasma jet heat transfer characteristic is experimentally measured. Therefore, the magnetic field needs to be reasonably designed according to specific ...

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Номер записи: 4