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#1
Прикладная космонавтика / Starlink Fl162 Group 6-56 (V2 ...
Последний ответ от zandr - Сегодня в 17:20:44https://celestrak.org/NORAD/elements/supplemental/
ЦитироватьStarlink G6-56 Pre-LaunchОсновное время запуска и 12 запасных.
Derived from a pre-launch Starlink-G6-56 state vector, provided by SpaceX. SupGP data is provided for the entire stack, as well as one for a single satellite.
Launch: 2024-05-08 15:00:00 UTC.
Deploy: 2024-05-08 16:05:39.280 UTC.
Backup Launch Opportunity #1
Launch: 2024-05-08 15:14:00 UTC.
Deploy: 2024-05-08 16:19:39.280 UTC.Спойлер
Backup Launch Opportunity #2
Launch: 2024-05-08 15:34:00 UTC.
Deploy: 2024-05-08 16:39:39.280 UTC.
Backup Launch Opportunity #3
Launch: 2024-05-08 15:40:00 UTC.
Deploy: 2024-05-08 16:45:39.280 UTC.
Backup Launch Opportunity #4
Launch: 2024-05-08 15:54:00 UTC.
Deploy: 2024-05-08 16:59:39.280 UTC.
Backup Launch Opportunity #5
Launch: 2024-05-08 16:08:00 UTC.
Deploy: 2024-05-08 17:13:39.280 UTC.
Backup Launch Opportunity #6
Launch: 2024-05-08 17:14:00 UTC.
Deploy: 2024-05-08 18:19:39.280 UTC.
Backup Launch Opportunity #7
Launch: 2024-05-08 17:20:00 UTC.
Deploy: 2024-05-08 18:25:39.280 UTC.
Backup Launch Opportunity #8
Launch: 2024-05-08 17:34:00 UTC.
Deploy: 2024-05-08 18:39:39.280 UTC.
Backup Launch Opportunity #9
Launch: 2024-05-08 17:48:00 UTC.
Deploy: 2024-05-08 18:53:39.280 UTC.
Backup Launch Opportunity #10
Launch: 2024-05-08 18:10:00 UTC.
Deploy: 2024-05-08 19:15:39.280 UTC.
Backup Launch Opportunity #11
Launch: 2024-05-08 18:38:00 UTC.
Deploy: 2024-05-08 19:43:39.280 UTC.
Backup Launch Opportunity #12
Launch: 2024-05-08 18:42:00 UTC.
Deploy: 2024-05-08 19:47:39.280 UTC.[свернуть]
#2
Космонавтика - ее история, назначение и перспективы / Ракетные двигатели Индии
Последний ответ от C-300-2 - Сегодня в 17:15:34О! Йоги провели ОСИ стендового макета ЖРД СКЕ-200 (разрабатывается для модернизированной ЛВМ-3, раньше её называли ГСЛВ Мк3). По сути - аналог нашего РД-191. Исходя из фото и описания, макет представлял собой совокупность КС, ГГ, арматуры. Зажигание было химическим (что вполне традиционно) смесью, по описанию похожей на наше ПГ-2 - смесь триэтилбора и триэтилалюминия. Как я понял из описания, зажигание было плавным и устойчивым.
https://www.isro.gov.in/Successful_ignition_test_on_semi_cryogenic_PITA.html
ЦитироватьMay 6, 2024
ISRO is developing a 2000 kN thrust semi-cryogenic engine working on an LOX Kerosene propellant combination for enhancing the payload capability of LVM3 and for future launch vehicles. Liquid Propulsion Systems Centre (LPSC) is the lead centre for the development of semi-cryogenic propulsion systems with the support of other launch vehicle centres of ISRO. The assembly and testing of the propulsion modules were done at the ISRO propulsion complex (IPRC), Mahendragiri. As part of the engine development, a pre-burner ignition test article, which is a full complement of the engine power head system excluding the turbopumps is realized. The first ignition trial was conducted successfully on May 2, 2024, at semi cryo integrated engine test facility (SIET) at IPRC, Mahendragiri, which was dedicated to the nation recently by the honorable Prime Minister of India. Smooth and sustained ignition of the preburner is demonstrated which is vital for the starting of the semi-cryogenic engine.
Semi-cryogenic engine ignition is achieved using a start fuel ampule which uses a combination of Triethyle Alumnide and Triethyle Boron developed by VSSC and used for the first time in ISRO in the 2000 kN semi-cryogenic engine. Many injector elemental level ignition tests were conducted at the Propulsion Research Laboratory Division (PRLD) facility of Vikram Sarabhai Space Centre (VSSC) for characterization. The ignition process is one of the most critical parts in the development of liquid rocket engine systems. With the successful ignition of the semi-cryo pre burner, a major milestone in the semi-cryo engine development has been achieved. This will be followed by development tests on the engine powerhead test article and fully integrated engine. The development of a semi-cryo stage with 120 tons of propellant loading is also under progress.
The successful ignition of a semi-cryo preburner is a major accomplishment of ISRO in the development of semi-cryogenic propulsion systems.
https://www.isro.gov.in/Successful_ignition_test_on_semi_cryogenic_PITA.html
#3
Пилотируемые полеты / USCV-9: Dragon v2 Crew-9 – Fal...
Последний ответ от Paleopulo - Сегодня в 17:14:40Цитата: Pirat5 от Сегодня в 12:18:56кто же будет дублёром у Горбунова?А что с Песковым?
#4
Средства выведения и другие технические вопросы / Ядерный Российский буксир для ...
Последний ответ от Astro Cat - Сегодня в 16:31:11Расскажите Борисову про "пики вечного света".
#5
Средства выведения и другие технические вопросы / И опять про Ангару (часть трет...
Последний ответ от Raul - Сегодня в 16:30:26Цитата: Дмитрий Гард от Сегодня в 14:34:23Как-то далеко убежали от темы. Сегодняшняя Ангара - далеко не лунная ракета.Смторя какую задачу ставить. Пилотируемый облет Луны, например.
#6
Пилотируемые полеты / Освоение Луны
Последний ответ от Дем - Сегодня в 16:18:35Цитата: Димитър от Сегодня в 10:49:13А резать болышие камни на "кирпичи" не выгоднее?А пока никто не знает, какие там на Луне большие камни... исследовано только то что на поверхности валяется после падений метеоритов.
#7
Пилотируемые полеты / Новости МКС
Последний ответ от Veganin - Сегодня в 15:14:02https://www.roscosmos.ru/40529/
ЦитироватьНа МКС исследуют поведение экипажа в длительном полете
На Международной космической станции продолжается полет российских участников 71-й длительной экспедиции — космонавтов Роскосмоса Олега Кононенко, Николая Чуба и Александра Гребенкина.
7 мая по программе полета российского сегмента станции выполнены:
- эксперимент «Идентификация» (исследование динамики конструкции МКС при различных внешних силовых воздействиях с учетом изменения модульного состава станции);
- эксперимент «Взаимодействие-2» (изучение закономерностей поведения экипажа в длительном космическом полете);
- эксперимент «Кварц-М» (определение механизмов, зон возникновения и развития космической коррозии материалов и покрытий внешних рабочих поверхностей модулей российского сегмента МКС для разработки рекомендаций по их защите от ее воздействия);
- эксперимент «Ураган» (отработка технических средств и методов контроля развития катастрофических явлений природного и техногенного характера на Земле или их предвестников);
- эксперимент «УФ-атмосфера» (картография ночной атмосферы в ближнем ультрафиолетовом диапазоне широкоугольным детектором с большой апертурой и высоким пространственно-временным разрешением);
- эксперимент «Перспектива-КМ» (отработка технологии разворачивания и фиксирования формы космических конструкций из слоистых полимерных композиционных материалов с эффектом памяти формы и дистанционного контроля за поведением материалов и элементов конструкции в реальных условиях космического полета);
- индивидуальный мониторинг содержания углекислого газа с помощью газоанализатора ИМ-СО2 у космонавтов;
- оценка уровня физической тренированности на бегущей дорожке у космонавтов;
техническое обслуживание систем обеспечения жизнедеятельности.
Материал подготовлен при содействии Центра подготовки космонавтов имени Ю.А. Гагарина
#8
Прикладная космонавтика / Перспективные отечественные КА...
Последний ответ от cross-track - Сегодня в 15:04:44Цитата: AKr от Сегодня в 13:21:24а, я ошибочно подумал, что вы комментировали оптический спутникЦитата: cross-track от Сегодня в 12:52:45- дублированные ЗД - обе пары смотрят вверх.Цитата: AKr от Сегодня в 12:30:22- антенна РЛС смотрит в направлении от Земли в космос???
#9
Информация / "Энергия-Буран". Четверть века...
Последний ответ от Wil - Сегодня в 14:50:46Hello, I add one more sensor. I think it is a Sunrise/Sunset sensor.
#10
Прикладная космонавтика / Thuraya 3 – Зенит-SL/ДМ-SL – М...
Последний ответ от A.E - Сегодня в 14:46:43Кооперация там была, конечно, но ответственность Боинга не только за платформу, но и за полезную нагрузку.
конверторы Сааб
https://www.defense-aerospace.com/saab-delivers-subsystem-for-thuraya-satellite-july-3/
Saab Ericsson Space has delivered payload equipment for Thuraya D3 to Boeing Satellite Systems in the USA. The Thuraya satellite system is operated by Thuraya Satellite Telecommunications Company of UAE. The system is the first successful direct-to-mobile satellite communication system.
Our deliveries to D3 have been made on record time thanks to our very dedicated project team. The customer is very pleased with our performance, Says Göran Forslund, the Saab Ericsson Space project manager.
The Thuraya mobile satellite system gives users access to wireless voice and data links in a very large service area comprising Europe, North and Central America, the Middle East and Central and South Asia. Coverage is equally given at sea in these areas. The handsets that are somewhat larger than normal cell phones, include functions to use the terrestrial GSM network when available and includes a GPS receiver for positioning.
The satellites as well as the entire system is built by Boeing Satellite Systems in El Segundo, California. The satellites include a very large antenna (12,25 meters diameter) that can be used to adapt satellite capacity to local traffic variations. Saab Ericsson Space has supplied C-band Frequency Converters to the satellite payloads of three different types.
Saab Ericsson Space has delivered payload equipment for Thuraya D3 to Boeing Satellite Systems in the USA. The Thuraya satellite system is operated by Thuraya Satellite Telecommunications Company of UAE. The system is the first successful direct-to-mobile satellite communication system.
Our deliveries to D3 have been made on record time thanks to our very dedicated project team. The customer is very pleased with our performance, Says Göran Forslund, the Saab Ericsson Space project manager.
The Thuraya mobile satellite system gives users access to wireless voice and data links in a very large service area comprising Europe, North and Central America, the Middle East and Central and South Asia. Coverage is equally given at sea in these areas. The handsets that are somewhat larger than normal cell phones, include functions to use the terrestrial GSM network when available and includes a GPS receiver for positioning.
The satellites as well as the entire system is built by Boeing Satellite Systems in El Segundo, California. The satellites include a very large antenna (12,25 meters diameter) that can be used to adapt satellite capacity to local traffic variations. Saab Ericsson Space has supplied C-band Frequency Converters to the satellite payloads of three different types.
[свернуть]
процессор IBM
https://www.defense-aerospace.com/world-beating-processor-for-thuraya-satellite-july-13/
Boeing Satellite Systems (BSS), a unit of The Boeing Company, and IBM today announced they have created the world's most powerful satellite-based digital signal processor, designed to make space-borne wireless communications available to a wide audience of users.
This digital signal processor is the heart of the Thuraya satellite, a powerful Boeing-built GEO-Mobile (GEM) spacecraft that was launched in October 2000 for Thuraya Satellite Telecommunications Co., Ltd., based in the United Arab Emirates. The digital signal processor provides the satellite with more computing power than 3,000 Pentium III-based computers, enabling the spacecraft to handle up to tens of thousands of phone calls simultaneously.
Space-based wireless systems offer a new means of connectivity for areas of the world where telephone lines and other infrastructure for traditional communications are less developed or don't exist. Boeing is tapping IBM's advanced custom integrated circuit technologies to improve the performance, reliability and cost of satellite-based communications, vastly improving the performance of previous digital satellite systems.
"We are extremely proud of our digital signal processing expertise," said Randy Brinkley, president of Boeing Satellite Systems. "The digital signal processor aboard the Thuraya satellite is five times more capable than any previous Boeing digital processor. We are proving that by advancing the state-of-the-art in satellite communications technology, we can provide viable alternatives to land-based communications systems."
Thuraya's chief executive Yousuf Al Sayed added: "We are pleased to be powering our system using such advanced processing technology. The digital signal processor is one example of how Thuraya has incorporated the most powerful technological options available today toward the creation of a truly pioneering telecom initiative."
Key to the highly flexible digital processor is its high density Application Specific Integrated Circuit (ASIC) chip technology. Designed by BSS and built by IBM, Thuraya satellite ASICs contain up to 3.8 million gates (circuits) each and represent the first adaptation of commercial ASIC technology to very large-scale digital satellite payloads. In a 17-month period, Boeing and IBM jointly designed, built, and delivered nine multimillion-gate ASICs with 100-percent first-pass success rate, enabling delivery of flight units just 24 months after the official start of design.
"We're constantly refining our custom chip technology for higher performance, lower power and faster time-to-market, with improved costs," said David Balkin, director of ASIC and Electronic Design and Automation development, IBM Microelectronics Division. "Our work with Boeing is another example of the wide range of applications that can benefit as a result. IBM chip technology has become a key component in extending the reach of the communications infrastructure."
On November 12, 2000, Boeing engineers brought the powerful Thuraya digital signal processor online for service, placing phone calls only three days after orbital insertion of the spacecraft at 44 degrees East longitude. The satellite has since completed in-orbit test and evaluation, allowing Thuraya to begin launching commercial service to more than 20 countries in July. The Thuraya satellite communication system serves the Middle East, North and Central Africa, Europe, the Indian subcontinent and Central Asia with medium-bandwidth data exchange and voice conversations using compact cellular telephone handsets.
The satellite's digital communications processor incorporates variable-bandwidth channel capability, on-board circuit switching for more than 25,000 full duplex circuits, and agile transmit/receive digital beam forming for more than 300 projected cell sites. Using the satellite's built-in on-orbit test capability, engineers confirmed perfect performance of this critical commercial digital signal processing technology in record time.
Incorporating BSS' third-generation very large-scale digital processing technology, the Thuraya payload is one of more than 28 major digital communication systems delivered by BSS in the last eight years. Together, these systems contain more than 43,000 ASICs of 50 major types that represent a chain of design successes unparalleled in the satellite industry.
Boeing Satellite Systems (BSS), a unit of The Boeing Company, and IBM today announced they have created the world's most powerful satellite-based digital signal processor, designed to make space-borne wireless communications available to a wide audience of users.
This digital signal processor is the heart of the Thuraya satellite, a powerful Boeing-built GEO-Mobile (GEM) spacecraft that was launched in October 2000 for Thuraya Satellite Telecommunications Co., Ltd., based in the United Arab Emirates. The digital signal processor provides the satellite with more computing power than 3,000 Pentium III-based computers, enabling the spacecraft to handle up to tens of thousands of phone calls simultaneously.
Space-based wireless systems offer a new means of connectivity for areas of the world where telephone lines and other infrastructure for traditional communications are less developed or don't exist. Boeing is tapping IBM's advanced custom integrated circuit technologies to improve the performance, reliability and cost of satellite-based communications, vastly improving the performance of previous digital satellite systems.
"We are extremely proud of our digital signal processing expertise," said Randy Brinkley, president of Boeing Satellite Systems. "The digital signal processor aboard the Thuraya satellite is five times more capable than any previous Boeing digital processor. We are proving that by advancing the state-of-the-art in satellite communications technology, we can provide viable alternatives to land-based communications systems."
Thuraya's chief executive Yousuf Al Sayed added: "We are pleased to be powering our system using such advanced processing technology. The digital signal processor is one example of how Thuraya has incorporated the most powerful technological options available today toward the creation of a truly pioneering telecom initiative."
Key to the highly flexible digital processor is its high density Application Specific Integrated Circuit (ASIC) chip technology. Designed by BSS and built by IBM, Thuraya satellite ASICs contain up to 3.8 million gates (circuits) each and represent the first adaptation of commercial ASIC technology to very large-scale digital satellite payloads. In a 17-month period, Boeing and IBM jointly designed, built, and delivered nine multimillion-gate ASICs with 100-percent first-pass success rate, enabling delivery of flight units just 24 months after the official start of design.
"We're constantly refining our custom chip technology for higher performance, lower power and faster time-to-market, with improved costs," said David Balkin, director of ASIC and Electronic Design and Automation development, IBM Microelectronics Division. "Our work with Boeing is another example of the wide range of applications that can benefit as a result. IBM chip technology has become a key component in extending the reach of the communications infrastructure."
On November 12, 2000, Boeing engineers brought the powerful Thuraya digital signal processor online for service, placing phone calls only three days after orbital insertion of the spacecraft at 44 degrees East longitude. The satellite has since completed in-orbit test and evaluation, allowing Thuraya to begin launching commercial service to more than 20 countries in July. The Thuraya satellite communication system serves the Middle East, North and Central Africa, Europe, the Indian subcontinent and Central Asia with medium-bandwidth data exchange and voice conversations using compact cellular telephone handsets.
The satellite's digital communications processor incorporates variable-bandwidth channel capability, on-board circuit switching for more than 25,000 full duplex circuits, and agile transmit/receive digital beam forming for more than 300 projected cell sites. Using the satellite's built-in on-orbit test capability, engineers confirmed perfect performance of this critical commercial digital signal processing technology in record time.
Incorporating BSS' third-generation very large-scale digital processing technology, the Thuraya payload is one of more than 28 major digital communication systems delivered by BSS in the last eight years. Together, these systems contain more than 43,000 ASICs of 50 major types that represent a chain of design successes unparalleled in the satellite industry.
[свернуть]