Intelsat 29E (EpicNG) - Ariane 5 ECA (VA228) - Куру ELA-3 - 27.1.2016

Автор Salo, 04.12.2015 09:03:49

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Цитировать"Нервно наблюдал этим утром (11 апреля), как Intelsat 29e и (спутник-ретранслятор НАСА) TDRS 3 имели "кошмарный сценарий" на геостационарной орбите - высокоскоростное сближение (примерно 1 километр в секунду)."
Сикока, сикока???  :o
1. Ангара - единственная в истории новая РН которая хуже старой. (с) Старый Ламер
2. Главное назначение Ангары и Восточного - выкачать из бюджета максимум денег.
3. Фалкон-9 длиннее и толще чем  УРМ-1
4. Зато у Роскосмоса тоннели длиннее и толще чем у Маска
5. Было стыдно и весело (с) Hiroo


Скорее всего имели а виду метр в секунду. По моим расчетам 3м/с, исходя из дрейфа

ЦитироватьStricken with fuel leak, Intelsat 29e seen drifting in geostationary orbit
April 15, 2019Stephen Clark

A Boeing-built Intelsat communications satellite launched three years ago is drifting in geostationary orbit after suffering a fuel leak and releasing debris fragments last week, according to an analysis by space surveillance experts.

Ground-based telescopes operated by ExoAnalytic Solutions, a commercial company that tracks objects in space with a network of optical telescopes, show the Intelsat 29e communications satellite is tumbling, leaking propellant and drifting through the geostationary arc, where numerous communications satellites are stationed more than 22,000 miles (nearly 36,000 kilometers) over the equator.

The telescopic imagery also appears to show several pieces of debris came off the satellite last week, according to Bill Therien, executive vice president of engineering at ExoAnalytic Solutions.

In an April 10 statement, Intelsat said the Intelsat 29e spacecraft "experienced damage" on April 7 that resulted in a propellant leak. The event knocked Intelsat 29e out of service, and Intelsat said it was moving customers to other Intelsat satellites and third-party services to mitigate the outage, which affects maritime, aeronautical and wireless operator customers in the Latin America, Caribbean and North Atlantic regions.

In an interview with Spaceflight Now late Friday, Therien said ExoAnalytic's sensors detected a change in the brightness of Intelsat 29e on April 8, suggesting the spacecraft was tumbling. Tracking data collected by ExoAnalytic also showed the satellite began drifting east fr om its operational position around the same time.

Intelsat said Intelsat 29e experienced a second anomaly April 9 that caused a loss of communication with the satellite. On April 10, ExoAnalytic's sensors detected a piece of debris coming off the satellite, followed by more fragments over the next couple of days, Therien said.

"Communication with the satellite has been intermittent," Intelsat said in a statement. "Intelsat continues to work with the satellite's manufacturer, Boeing, on recovering communication."

Therien said the largest of the debris seen coming off Intelsat 29e is no more than a meter, or about 3.3 feet, in size. A shower of smaller particles observed by ExoAnalytic could be fuel leaking out of the satellite's propellant tanks, or pieces of the spacecraft itself, Therien told Spaceflight Now.

The Intelsat 29e satellite is prepared for encapsulation inside the Ariane 5 rocket's payload fairing ahead of its launch in January 2016. Credit: ESA/CNES/Arianespace – Photo Optique Video du CSG – P. Piron

Intelsat 29e was launched Jan. 27, 2016, aboard an Ariane 5 rocket fr om French Guiana for a planned 15-year mission. Based on the Boeing 702MP satellite design, Intelsat 29e was positioned in geostationary orbit at 50 degrees west longitude, wh ere its thrusters kept the satellite parked over the same geographic region, with the spacecraft's orbital velocity matching the rate of Earth's rotation.

Since beginning commercial service three years ago, Intelsat 29e provided C-band video and data distribution services over South America, and beamed Ku-band signals across the Americas, including aeronautical routes over the North Atlantic, wh ere passengers received live television and broadband Internet through the satellite.

Intelsat 29e was the first craft to launch in a new generation of Intelsat satellites known as the "Epic" series, which are capable of routing more data than earlier satellite models.

Engineers continue studying the cause of the anomaly on Intelsat 29e, and officials have not said whether the problem originated within the spacecraft or from a collision with a micrometeoroid or a piece of space junk.

The behavior of Intelsat 29e is reminiscent of failures aboard the AMC 9 and Telkom 1 communications satellites in 2017. Both of those satellites shed debris after suffering sudden anomalies in geostationary orbit.

AMC 9 and Telkom 1 — built by Thales Alenia Space and Lockheed Martin, respectively — were near the end of their service lives when those failures occurred, while Intelsat 29e is still a relatively young spacecraft.


ЦитироватьT.S. Kelso‏ @TSKelso 14 апр.

IS-29E is now drifting at 1.2 deg/day (based on latest TLE). At least the phasing seems to be working out for now. Also added the drift rate in the Latest Data column for all drifters: ....

ЦитироватьNew video of Intelsat 29e satellite reveals dramatic "anomaly"
ExoAnalytic Solutions Videos
Опубликовано: 12 апр. 2019 г.
Our network of 300 ground-based telescopes captured imagery of this week's Intelsat 29e anomaly. Check out more details in today's (4/12/19) Ars Technica article.



ЦитироватьT.S. Kelso‏ @TSKelso 3 ч. назад

The current situation with IS-29E continues to be quite troubling. Yesterday, we saw it spiral around IS-11 & IS-32E. We are receiving reports from ISON of 13 pieces of associated debris. I will provide additional info on how you can better see what's going on next.

ЦитироватьЭксперт сообщил об обнаружении 13 обломков отказавшего спутника Intelsat

МОСКВА, 17 апр - РИА Новости. Международная сеть телескопов ISON, управляемая институтом РАН, зафиксировала более 10 обломков от вышедшего из строя в апреле спутника связи Intelsat 29e, сообщил владелец специализированного сайта с данными по космическим аппаратам Томас Келсо.

Ранее один из крупнейших в мире международных спутниковых операторов Intelsat сообщил об отказе своего космического аппарата Intelsat 29e. Спутник был выведен на орбиту ракетой-носителем Ariane 5 с космодрома Куру в январе 2016 года. Он создан компанией Boeing и должен был проработать 15 лет.

"Мы получаем сообщения от (сети) ISON о 13 связанных (с Intelsat 29e) обломках", - написал Келсо в Twitter.

По его словам, Intelsat 29e продолжает неконтролируемо дрейфовать на геостационарной орбите, угрожая функционирующим космическим аппаратам.

На геостационарной орбите (круговой орбите с высотой 35786 километров) работают космические аппараты связи, телевещания и ретрансляции крупнейших спутниковых операторов и стран мира.

"В настоящее время ситуация с Intelsat 29e продолжает оставаться очень тревожной", - сказал Келсо.

По его словам, вчера спутник "описывал спирали" вокруг аппаратов Intelsat 11 и Intelsat 32e.

ISON (International Scientific Optical Network, Научная сеть оптических инструментов астрометрических и фотометрических наблюдений) - международная научная оптическая сеть, состоящая из нескольких десятков телескопов, которые расположены в различных странах мира. Она занимается обнаружением и отслеживанием различных объектов в космическом пространстве. Сеть управляется Институтом прикладной математики имени Келдыша РАН.


Цитироватьtnt22 пишет:
2 zandr , сравни #46 и #43
По некоей ссылке один увидел одно, другой - другое. Уникальный случай?
И по подаче, сравни 
и (Новости Энергомаша)


Теперь официально - мусор!
ЦитироватьIntelsat Reports Intelsat 29e Satellite Failure


Customers Transitioning to Restoration Capacity

Luxembourg, 18 April 2019 – Intelsat S.A. (NYSE: I) announced today that the anomaly previously disclosed on April 10, 2019 has resulted in the total loss of the Intelsat 29e spacecraft. A failure review board has been convened with the satellite's manufacturer, Boeing, to complete a comprehensive analysis of the cause of the anomaly.

Late on April 7, the Intelsat 29e propulsion system experienced damage that caused a leak of the propellant on board the satellite resulting in a service disruption to customers on the satellite. While working to recover the satellite, a second anomaly occurred, after which all efforts to recover the satellite were unsuccessful.

Since the anomaly, Intelsat has been in active contact with affected customers. Restoration paths on other Intelsat satellites serving the region and third-party satellites have been provided for a majority of the disrupted services. Migration and service restoration are well underway; highlighting the resiliency of the Intelsat fleet and the benefit of the robust Ku-band open architecture ecosystem.


ЦитироватьEp5 - Drifting GEO Satellite

Analytical Graphics, Inc.

Опубликовано: 22 апр. 2019 г.

Episode 5 - Bob Hall, Director of Operations for the Commercial Space Center (ComSpOC) talks briefly about Intelsat 29e drifting through the GEO belt. (4:05)


Очень трудно сделать точный прогноз, особенно о будущем (с) Нильс Бор


Не знаю зачем мое сообщение перенесли в эту тему. В теме про Amos5 оно было по прямому назначению.
Очень трудно сделать точный прогноз, особенно о будущем (с) Нильс Бор