Astra 5B, Amazonas 4A – Ariane 5 ECA (VA216) – Куру ELA-3 – 22.03.2014 - 22:04 UTC

[Старый]

Я чтото так и не смог понять в чём состоит проблема. По непонятной причине выдаваемая на транспондеры мощность меньше расчётной или есть чтото более конкретное?

[DAP]

Старый пишет:
Я чтото так и не смог понять в чём состоит проблема. По непонятной причине выдаваемая на транспондеры мощность меньше расчётной или есть чтото более конкретное?

Вроде нигде прямо не написали в чем именно проблема, кроме того, что она в системе питания. Подозревают два компонента (неназванных), один из которых специально сделан для этого спутника, другой - старый, использовался в последний раз, и на новых моделях уже заменен. Так что Орбитал типа всех успокаивает - дефект никак не сказывается на других заказчиках.

[Старый]

Проявляется то проблема в чём? Транспондеры не выдают мощность?

[Александр Ч.]

Старый пишет:
Проявляется то проблема в чём? Транспондеры не выдают мощность?

На транспондеры не подается достаточная мощность и часть будет отключена.
Я так трактую фразу: "Hispasat and Orbital continue to evaluate the issue but both companies have made statements suggesting that the anomaly is permanent and will reduce the broadcasting capacity of the satellite's Ku-band payload."

[Старый]

Спасибо.

[Veganin]

anik пишет:
Упс... Надо было подольше на Земле его подержать... Дважды откладывали пуск из-за проблем с "Амазонасом"...

Peter B. de Selding ‏@pbdes

Hispasat's Amazonas 4A, built by Orbital & launched 3 wks ago, has power-system anomaly. Investigation ongoing on cause/consequences.

Надо было кусачками поработать - глядишь, в Тихий океан упал бы и Орбиталу не пришлось бы объяснять заказчикам, что на других спутниках компоненты нужной кондиции ТЗЧ и точка.

[Veganin]

В чем был смысл запускать глючный КА испанцам? Надо было отправить Орбиталу на доработку и получить деньги за упущенную выгоду от задержки. Испанцы знают слово " Авось"?

[anik]

Peter B. de Selding ‏@pbdes

Hispasat Amazonas 4A likely to suffer 50% capacity dip from power system failure, industry officials say. Sat insured for EUR 145M ($199M).

[anik]

anik пишет:
Peter B. de Selding ‏@pbdes

Hispasat Amazonas 4A likely to suffer 50% capacity dip from power system failure, industry officials say. Sat insured for EUR 145M ($199M).

Подробнее на http://www.spacenews.com/article/satellite-telecom/40308power-system-failure-expected-to-cost-amazonas-4a-half-its-capacity

[Ded]

anik пишет:

One industry official said the satellite has been unable to fully deploy one of its solar arrays

Похоже одно крыло СБ открылось не полностью.

[Ded]

Veganin пишет:

anik   пишет:
Упс... Надо было подольше на Земле его подержать... Дважды откладывали пуск из-за проблем с "Амазонасом"...

Peter B. de Selding ‏@pbdes

Hispasat's Amazonas 4A, built by Orbital & launched 3 wks ago, has power-system anomaly. Investigation ongoing on cause/consequences.

Надо было кусачками поработать - глядишь, в Тихий океан упал бы и Орбиталу не пришлось бы объяснять заказчикам, что на других спутниках компоненты нужной кондиции   ТЗЧ и точка.

Хорошая идея!

[Новый]

Hispasat and Orbital continue to evaluate the issue but both companies have made statements suggesting that the anomaly is permanent and will reduce the broadcasting capacity of the satellite's Ku-band payload.
 
Thompson said the investigation is focusing on two possible causes of the problem. In both cases, he said, the issue is isolated to Amazonas 4A and will not affect any other Orbital-built satellites in orbit or in production.
 
One of the failure scenarios "had to do with something that was specific to the Amazonas 4A, that is not done on any prior satellite or any satellite in production," Thompson said.
 
"The other failure mode is focused on a component that we have used many times in the past — at least 50 of these have been used by us over the last 10-12 years." Thompson said. "It probably comes down to a combination of unit-to-unit variability compounded by certain peculiar aspects of this particular satellite."
 
For reasons unrelated to Amazonas 4A, Orbital is no longer using this component design.
 
Orbital Chief Financial Officer Garrett E. Pierce said during the conference call that the company's revenue for the three months ending March 31 was down $13 million from forecasts because of the Amazonas 4A issue. Operating income was down $6.4 million in the period because of Amazonas 4A and the likely loss of future orbital incentive payments from Hispasat.
 
Satellite owners commonly withhold about 10 percent of what they agreed to pay for a satellite pending successful operations in orbit. These payments are made annually, with interest, throughout the satellite's scheduled 15-year operating life.
 
Pierce said Orbital had taken out insurance against the potential loss of its incentive payments, and that a claim for full recovery of the $6.4 million, and "possibly more," should be received by June.
 
Thompson said he remains optimistic that an option for another satellite order from Hispasat would be exercised despite the Amazonas 4A issue.

The power system failure on the Hispasat Amazonas 4A satellite is likely to result in an estimated 50 percent loss of capacity and an insurance claim equivalent to 50 percent of the satellite's insured value of 145 million euros ($199 million), industry officials said.
Officials cautioned that the satellite's owner, Madrid-based Hispasat, has not yet informed insurance underwriters of a precise estimate of the capacity loss. The estimate will depend on how much power margin Hispasat built into the spacecraft and whether the anomaly, in addition to cutting available power, will have the effect of reducing the satellite's planned 15-year service life.

Интересные детали:
1й сценарий - компонент СЭП, который ранее, до Amazonas 4A, не использовался.
2й сценарий - компонент СЭП, который больше, после Amazonas 4A, не используется.
Потеря премиальных платежей Орбитал застрахована и будет оплачена страховщиками.
Общий убыток Испасат - 50% от $199 млн тоже все застраховано.

[che wi]

SES: ASTRA 5B satellite goes live at 31.5 degrees East
http://www.ses.com/4233325/news/2014/19480974

Luxembourg, June 2nd, 2014 – SES S.A. (NYSE Euronext Paris and Luxembourg Stock Exchange: SESG) announces that the ASTRA 5B satellite went live today at the orbital position of 31.5 degrees East over Central and Eastern Europe, Russia and the Commonwealth of Independent States. The spacecraft provides DTH (Direct-to-Home) as well as direct-to-cable services and contribution feeds to digital terrestrial television networks in its target markets.

ASTRA 5B was successfully launched by an Ariane 5 rocket from the European spaceport in Kourou, French Guyana, on March 22nd, 2014. Since then, the spacecraft has successfully completed a number of in-orbit maneuvers and undergone a series of extensive in-orbit tests to confirm its flawless performance.

Спойлер

ASTRA 5B was built by Airbus Defence and Space Systems in Toulouse, France, based on the highly reliable Eurostar E3000 platform. The satellite is equipped with 40 Ku-band transponders (36 MHz equivalent) and 6 Ka-band transponders. The spacecraft also carries the second SES hosted L-band payload for the European Commission's European Geostationary Navigation Overlay Service (EGNOS). EGNOS helps to verify, improve and report on the reliability and accuracy of positioning signals in Europe.

ASTRA 5B replaces ASTRA 1G at the orbital position of 31.5 degrees East, SES's new video neighborhood for CEE, Russia and CIS. With ASTRA 5B the available capacity at that SES slot increases from 19 to 40 active transponders. The maneuver illustrates SES's capabilities to successfully develop new orbital positions using spacecraft that have achieved their primary missions, until the orbital slot is supplemented with fresh, state-of-the-art satellite capacity.

Martin Halliwell, Chief Technology Officer at SES, stated: "In line with our well-defined strategy, ASTRA 5B greatly increases SES's satellite capacities over CEE, Russia and the CIS. With the Operational Service Date (OSD) of ASTRA 5B, SES has as of today 1,536 active satellite transponders on its global satellite fleet, comprising 55 active spacecraft at 37 orbital slots around the world. We would like to thank our European partners at Airbus Defence and Space Systems and Arianespace for the successful ASTRA 5B mission."

[свернуть]

———
SES S.A. | 02.06.2014

[ВВК]

Не подскажет кто, а этой позицией 31,5 до Астры -1G кто пользовался?

[che wi]

ВВК пишет:
Не подскажет кто, а этой позицией 31,5 до Астры -1G кто пользовался?

Optus A3 (Aussat 3) там когда-то был, потом Astra 1D, Astra 5A (Sirius 2), Astra 2C.

[PIN]

Сделать так, чтобы одна панель СБ не раскрылась, надо очень постараться...там ничего, кроме пружин и ножиков для отрезания/отжигания веревочек быть не должно.

[PIN]

CБ там производства ATK, своеобразные www.atk.com/wp-content/uploads/2013/05/PUMA-2012.pdf

[ВВК]

che wi пишет:
03.06.2014 08:39:21
            
            
               

ВВК пишет:
Не подскажет кто, а этой позицией 31,5 до Астры -1G кто пользовался?

Optus A3 (Aussat 3) там когда-то был, потом Astra 1D, Astra 5A (Sirius 2), Astra 2C.

Спасибо , т.е. это получается для СЭС своя родная точка хотя много светит на нас?

[anik]

Peter B. de Selding @pbdes
Hispasat: Investigation into Amazonas 4A power anomaly continues, still unclear effect on lifespan/performance & no insurance claim yet.