EUTELSAT W3B & BSAT 3b = Ariane 5 ECA (V197) – FRGUI – 28.10.10 21:51 UTC

[Salo]

http://www.arianespace.com/news-mission-update/2010/732.asp

Ariane 5's latest success: W3B and BSAT-3b are orbited on the fourth Arianespace heavy-lift mission of 2010[/size]

October 28, 2010 – Ariane Flight 197

The fourth Ariane 5 mission of 2010 successfully delivered two telecommunications satellites to geostationary transfer orbit today, marking the 53rd flight for Arianespace's heavy-lift workhorse and its 39th consecutive success.


Ariane 5 makes an on-time liftoff from the ELA-3 launch zone with its dual payload of the W3B and BSAT-3b satellites.

Lifting off on time at 6:51 p.m. from the Spaceport's ELA-3 launch zone in French Guiana, the Ariane 5 deployed its W3B and BSAT-3b passengers during a flight lasting just under 38 minutes.  The launcher's payload lift performance was approximately 8,260 kg., which included a combined 7,460 kg. mass for the two satellites, along with Ariane 5's SYLDA 5 multi-payload dispenser system and associated integration hardware.

"With this evening's success, we already have launched eight large telecommunications satellites since the beginning of 2010, which is more than all of our competitors combined," said Arianespace Chairman & CEO Jean-Yves Le Gall. "This follows our Soyuz mission last week, performed from Baikonur by our friends at Starsem, which orbited six constellation satellites – all of which shows the relevance, efficiency and availability of our launcher family."

Ariane 5 delivered another highly accurate performance in tonight's mission, with the following provisional orbital parameters at the injection of its cryogenic upper stage:
- Perigee: 249.2 km. for a target of 249.3 km.
- Apogee: 35,907 km. for a target of 35,911 km.
- Inclination:  2.00 deg. for a target of 2.00 deg.

The 5,370-kg. W3B satellite for Eutelsat was deployed on tonight's Ariane 5 flight was deployed at 28 minutes into the mission, marking a new step in Arianespace's uninterrupted relationship with Europe's leading satellite operator, which has spanned more than 25 years.

W3B is the 25th Eutelsat satellite orbited by Arianespace, and it will offer significant flexibility for a wide range of services from TV broadcasting to professional data networks and broadband access.

Based on Thales Alenia Space's 4000 spacecraft platform, W3B will have a coverage area over Europe, the Middle East, Central Asia, Africa and the Indian Ocean Islands, with an operational design lifetime of 15 years.  It initially will be located at 16 deg. East, followed by a move to an orbital slot of 7 deg. East for collocation with Eutelsat's W3A satellite.

The BSAT-3b satellite launched by Arianespace today was lofted for Lockheed Martin Commercial Space Systems on behalf of Japan's B-SAT Corporation.  This was the seventh B-SAT spacecraft orbited by Arianespace.  Manufactured using Lockheed Martin's A2100 A platform, the 2,060-kg. relay satellite is fitted with 12 130-watt Ku-band channels – with eight operating at a time.  B-SAT will deliver direct-to-home television programming to Japan during its planned 15-year-plus lifetime.

"Japan is one of the major partners of our company," explained Le Gall.  "Out of a total of 36 Japanese satellites open to competition for launch services, we have signed 27 of the contracts.  And for the past several years, we have won 100 percent of the market – which really is quite significant."

The next Ariane 5 mission is set for November 25 with another heavy-lift launch, carrying the Intelsat 17 and HYLAS 1 satellites. It will be followed by one additional mission of this workhorse vehicle before the end of 2010.

[Salo]

http://www.arianespace.com/news-press-release/2010/10-28-2010-v197-launch-success.asp

Flight 197: Arianespace orbits satellites for Eutelsat and B-SAT[/size]

Kourou, October 28, 2010

On Thursday, October 28, Arianespace orbited two communications satellites: W3B for the European operator Eutelsat, and BSAT-3b for the American manufacturer Lockheed Martin Commercial Space Systems (LMCSS), as part of a turnkey contract with Japanese operator Broadcasting Satellite System Corporation (B-SAT).

53rd Ariane 5 launch, 39th success in a row

This latest successful launch of Ariane 5, the fourth in 2010, once again proves the launcher's operational capabilities. Ariane 5 is the only commercial satellite launcher now on the market capable of simultaneously launching two payloads and handling a complete range of missions, from commercial launches into geostationary orbit to scientific satellites boosted into special orbits.

The 53rd launch of an Ariane 5, and 39th successful mission in a row, clearly demonstrate the launcher's reliability and availability. Arianespace's launch service & solutions continue to set the global standard and guarantee independent access to space for all customers, including national and international space agencies, private firms and governments.

With the launch this evening, Arianespace has now orbited eight commercial geostationary communications satellites out of the total of 14 launched since the beginning of the year, giving it over half of the market. Last week Arianespace and Starsem orbited six satellites for the Globalstar-2 constellation, using a Soyuz launch vehicle from the Baikonur Cosmodrome.

Long-standing customers

Arianespace and Eutelsat have built a very fruitful, uninterrupted relationship for more than 25 years, with the European launcher orbiting over half of Eutelsat's fleet. W3B is the 25th Eutelsat satellite launched by Arianespace.

Out of a total of 36 launch contracts open to competition in Japan, Arianespace has signed 27, with a 100% market share over the last few years. BSAT-3b is the seventh satellite for which B-SAT Corp. has chosen Ariane, and the 40th Lockheed Martin-built platform to be launched by Arianespace. The Arianespace order book still has two more Japanese satellites to be launched.

Confidence, responsiveness, quality and timeliness

Following this latest successful mission, Arianespace Chairman and CEO Jean-Yves Le Gall said: "With this superb launch, I would like to tell our friends Giuliano Berretta and Michel de Rosen for W3B, and Joe Rickers and Kazuo Takenaka for BSAT-3b, how much I appreciate their continued confidence in us. I would also like to pay tribute to everybody who has contributed to this success: the member-states of ESA, whom I would like to thank for supporting the launcher sector, and for their responsiveness in setting up Ariane production support programs. All of our industrial partners who produce the launcher, whom I would like to congratulate for their efforts in guaranteeing the quality of their products and ensuring perfect launches, enabling us to meet our customers' expectations. And CNES' teams, in France and at the Guiana Space Center, plus Arianespace's own operations team, whose skill, commitment and professionalism guarantee successful, on-time launches.

W3B/BSAT-3b mission at a glance

The mission was carried out by an Ariane 5 ECA launcher from Europe's Spaceport in Kourou, French Guiana. Liftoff was on Thursday, October 28, 2010 at 6:51 pm local time in Kourou (5:51 pm in Washington, D.C., 21:51 UT, 11:51 pm in Paris, and on Friday, October 29, at 6:51 am in Tokyo).

The W3B satellite was built by Thales Alenia Space as prime contractor, using a Spacebus 4000 C3 platform. It weighed 5,400 kg at launch. W3B is equipped with 53 active Ku-band transponders and three Ka-band transponders. Offering a design life of 15 years, it will enhance operational security for customers using "W" series satellites in various orbital positions, particularly at 16 degrees East.

BSAT-3b was built by Lockheed Martin Commercial Space Systems in Newtown, Pennsylvania, using an A2100 A platform. Weighing 2,060 kg at launch, it will be positioned at 110 degrees East in geostationary orbit, and offers a design life exceeding 15 years. BSAT-3b is fitted with eight 130 Watt Ku-band transponders, and is primarily designed to provide direct TV broadcast links for all of Japan.

[Новый]

Из-за отказа апогейной двигетельной установки W3B потерян.

[LRV_75]

фигасе.
Подробности?

[Alex D]

http://www.eutelsat.com/news/compress/en/2010/pdf/PR4810W3Bloss-post-launch.pdf

EUTELSAT STATEMENT ON LOSS OF W3B SATELLITE

Paris, 29 October 2010

Eutelsat Communications (Euronext Paris: ETL) announces the loss of the W3B satellite
following an anomaly which was detected on the satellite's propulsion subsystem after its
launch by an Ariane 5 rocket.

W3B was scheduled to be located at 16° East to replace Eutelsat's EUROBIRD™ 16, W2M
and SESAT 1 satellites. With the loss of W3B, the three satellites will now remain in full
service at 16° East until the arrival of W3C, whose launch is on track for mid-2011. Eutelsat
will also immediately initiate a new satellite programme, called W3D, for a planned launch in
the first quarter of 2013.

Michel de Rosen, CEO of Eutelsat Communications, commented: "The loss of W3B is a
disappointment for Eutelsat and for our customers. We share it with our partners, in particular
Thales Alenia Space and with the insurance community. Our attention is now focused on
delivering the W3C satellite to 16° East in mid-2011 and on initiating a new programme to
compensate for this loss."

Eutelsat is fully insured for the investment in W3B, which guarantees that the Group does not
incur any direct financial loss. The non-availability of W3B does not change the financial
guidance issued by the company on 30 July 2010.

Подробностей пока нет, но вероятно отказ всего двигательного комплекса. Иначе бы или дотянули на двигателях ориентации, либо утопили ими же. Впрочем, перигей и так низкий, но сход будет тогда неконтролируемый.

Пуск был полностью застрахован, объявлено о создании W3D с запуском в 2013-м.

[Tiger]

А на чём и когда полетит W3C?

[Alex D]

А на чём и когда полетит W3C?

Выше же в релизе всё написано - в середине 2011-го, очевидно тоже на Ариане-5. Планировался на 7E, но теперь очевидно встанет на 13E.

Я правда не знаю, там Eutelsat вроде что-то на китайце отправить должен, ну и KA-SAT скоро на Протоне.

[Новый]

С учетом стоимости проекта, это самая большая космическая потеря  за последние лет десять.  Спутник с запуском стоил треть ярда.  :cry:

[Старый]

С учетом стоимости проекта, это самая большая космическая потеря  за последние лет десять.  Спутник с запуском стоил треть ярда.  :cry:

В смысле в беспилотной космонавтике? Бо есть ещё Колумбия...

[Новый]

В смысле коммерческого космоса.

[Aleksandras]

Скорее всего KA-SAT уйдёт вправо :?: . Одна платформа ведь-Spacebus 4000 C3

[Новый]

Если окажется, что виноват Ариан-5 (повышенные вибро/акустические нарузки, ударное воздействие при раскрытии ГО и т.д.), тогда может и не-.

Кстати, именно на этой платформе TASом будет изготовлен «Ямал-402» для ГКС.

[Aleksandras]

Gunter на своём сайте http://www.skyrocket.de/space/doc_sat/aeosp_spacebus-c-class.htm уже написал причину: Oxydizer leak after launch

[pragmatik]

Gunter на своём сайте http://www.skyrocket.de/space/doc_sat/aeosp_spacebus-c-class.htm уже написал причину: Oxydizer leak after launch

А почему произошла утечка? на сайте так и не понял.
Но судя по инфе из форумов и домыслам, виноват ариан.

[VSATman]

Скорее всего KA-SAT уйдёт вправо :?: . Одна платформа ведь-Spacebus 4000 C3

ВЫ не правы у КаСата другой производитель и другая платформа - гляньте у Гюньера или на ВИКи..

[VSATman]

Если окажется, что виноват Ариан-5 (повышенные вибро/Кстати, именно на этой платформе TASом будет изготовлен «Ямал-402» для ГКС.

ИМХО Вы не правы. Ямалы-400 пойдут на Протонах. Соответственно без Апогейного двигетеля, а на Бризах (или ДМ). т.е.данной проблемы, что у 3В там точно не будет..

[VSATman]

Хороший вопрос :-) следующие месяца 3, а то и 6 куча яйцеголовых инженеров будут пытаться это понять, хотя бы с точностью 70% :-)

[WackiBacki]

Ямалы-400 пойдут на Протонах. Соответственно без Апогейного двигетеля

БУГОГА  :lol:  :lol:

На Протоне = без апогейного двигателя
АБАРЖАТЬСЯ, а все западные КА, которые запускаются Протоном на чем чешут с ГПО на ГСО?

[Aleksandras]

Да насчет платформы был неправ. Где-то у меня была инфа , что ДУ одинаковая на них.

[Alex D]

Себя же и поправлю, из таблички следует что именно W3C и полетит на китайце. И если я правильно понял, то из этой же таблички следует, что эта платформа впервые летела на Ариане. До этого успешно летала 5 раз на Протоне, 3 раза на Чанжен-3Б, и 1 раз на Зените. Выбор для W3C Чанженя-3Б тогда вполне понятен. С дебютной для этой платформы Арианой увы косяк вышел, но вероятно всё же не ракета виновата.