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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 3. Отображено 3.
01-05-2018 дата публикации

Welding voltage electric current automatic regulating apparatus

Номер: CN0207289124U
Автор: JIANG BAIJUN, GUO RIWEI, GUO LISHA, HE HAO
Принадлежит: GUANGZHOU JSTAR ELECTRONIC TECH CO LTD, GUANGZHOU JSTAR ELECTRONIC TECHNOLOGY CO., LTD.

The utility model provides a welding voltage electric current automatic regulating apparatus has all gone on protecting effectively to inputoutput interface, can protect inputoutput interface, also can get rid of outside strong jamming and crosstalk to the inside CPU the control unit of system through inputoutput interface, can weld voltage and welding current by automatically regulated, effectively improve the automatic level of welded, by receipt / the transmitting terminal SIG's of data communication circuit receiving and sending information, form the two -way asynchronous serial port communication structure of single data line. Owing to use single data line communication, reduce the wiring cost, the reduction factor causes the risk of trouble according to line contact failure simultaneously, that the data communication circuit uses all is the discrete devices who uses always, further reduces the cost of product. Whole circuit structure is simple, the reliability is high, with low costs ...

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Номер записи: 1
16-05-2023 дата публикации

Rim lead structure for multi-stage turbine blade dynamic stress measurement and design method

Номер: CN116124464A
Автор: JIANG BAIJUN, WU GUANGYAO, FAN XINGCHAO, WANG MEI, HE YUN, WANG XUEMIN
Принадлежит:

The invention relates to the technical field of aero-engines, and discloses a rim lead structure for multi-stage turbine blade dynamic stress measurement and a design method.The rim lead structure avoids the problem that a turbine blade dynamic stress measurement lead path bypasses a disc center or a hole is formed in a wheel disc spoke plate by forming a threading hole in a turbine disc rim protruding block; not only can the failure probability of the lead be greatly reduced, but also the strength and the service life of the wheel disc can meet the requirements, and the threading holes are easy to machine and form.

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Номер записи: 2
30-05-2023 дата публикации

Turbine blade frequency modulation method based on root extension structure parameter adjustment

Номер: CN116186943A
Автор: WU GUANGYAO, JIANG BAIJUN, LI KUN, WANG MEI, GAO WEISI, FAN XINGCHAO
Принадлежит:

The invention relates to the technical field of aero-engines, and discloses a turbine blade frequency modulation method based on root extension structure parameter adjustment, which can greatly change the first-order bending inherent frequency of a turbine blade and increase the resonance margin of the turbine blade by adjusting the size parameter of the root extension structure of the turbine blade under the condition of not changing the blade profile. The resonance frequency margin between the first-order bending inherent frequency and the excitation frequency of the turbine blade is larger than or equal to the frequency margin lower limit threshold value required by the design of the turbine blade, and therefore the first-order bending resonance problem in the working rotating speed range of an engine is avoided on the premise that it is guaranteed that the aerodynamic performance of the engine is not affected; therefore, the high-cycle fatigue failure rate of the engine turbine blade ...

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Номер записи: 3