Hispasat 1E, Koreasat 6 = Ariane 5ECA – FRGUI – 29.12.10 21:27 UTC

[Андрей Суворов]

Ребяты!
А с какой целью идёт снижение орбиты, а потом опять вверх тащится?

Было бы похоже на какой-то гравитационный манёвр разгона на снижении, если бы скорость при этом действительно росла. Вроде растёт, но не сразу.

Это способ уменьшить гравитационные потери при низкой тяговооружённости, точнее, при большой разнице тяговооружённости ТТУ и водородника. Об этом на форуме уже писали.

[Iva]

Это способ уменьшить гравитационные потери при низкой тяговооружённости, точнее, при большой разнице тяговооружённости ТТУ и водородника. Об этом на форуме уже писали.

Спасибо за разъяснение!
А то как-то странно выглядела траектория выведения.

[Salo]

http://www.arianespace.com/news-mission-update/2010/751.asp

December 29, 2010 – Ariane Flight 199[/size]



Arianespace completed another busy year of launch operations with today's Ariane 5 mission that orbited the HISPASAT 1E and KOREASAT 6 telecommunications spacecraft – marking the sixth flight of this heavy-lift workhorse in 2010.



This evening's liftoff was the 199th flight of an Ariane family vehicle from the Spaceport in French Guiana, and the 41st consecutive success for Ariane 5.

Lifting off from the Spaceport in French Guiana, Ariane 5 deployed its two passengers during a mission lasting 34 minutes.  In another demonstration of Arianespace's reactivity, this 41st consecutive successful flight for Ariane 5 occurred just one month after its previous mission in November.

In total, the 12 large telecommunications relay platforms lofted by Ariane 5 during dual-payload launches this year represent a 60 percent share of all such satellites orbited worldwide since January.

"I want to thank all of those who contributed to this new Ariane 5 success," said Arianespace Chairman & CEO Jean-Yves Le Gall in comments from the Spaceport's mission control room.  "This includes the member states of the European Space Agency for their support of the Ariane program – which they recently demonstrated once again – the French CNES space agency, and our industrial partners who produce Ariane 5."

Le Gall also congratulated Arianespace's operational team for their exceptional performance in 2010. "Your flexibility, reactivity, reliability, availability – and above all – the passion you bring enabled us to meet our engagements," he added.  "You have worked with perseverance and determination in responding to our objectives, and you have shown anew why you are the best operational team in the world."

Arianespace's six heavy-lift missions performed in 2010 by Ariane 5 carried a total payload weight of approximately 45,235 kg. into geostationary transfer orbit from the Spaceport in French Guiana.  This was complemented by the 4,200-kg. mass of six Globalstar second-generation satellites placed into circular phasing orbit on an Arianespace Soyuz mission, conducted by its Starsem affiliate from Kazakhstan's Baikonur Cosmodrome.

Today's on-target Ariane 5 launch occurred at sunset in French Guiana, providing an excellent view of the vehicle's ascent – including the separation of its two solid boosters at an altitude of some 67 km., and the payload fairing's jettisoning at 106 km.    This latest on-target mission was completed with the following estimated orbital parameters at the injection of its cryogenic upper stage:
- Perigee: 249.4 km. for a target of 249.4 km.
- Apogee: 35,922 km. for a target of 35,907 km.
- Inclination:  2.99 deg. for a target of 3.00 deg.

The HISPASAT 1E satellite lofted by Ariane 5 was the sixth spacecraft launched by Arianespace for the Spanish-based HISPASAT telecommunications operator, continuing a relationship that traces its roots to the orbiting of HISPASAT 1A in 1992.  With a liftoff mass of 5,320 kg., HISPASAT 1E will provide high-quality capacity for HISPASAT's new initiatives – which include direct to home television; digital terrestrial television; value-added broadband services in mobile, land and maritime environments; and high-definition television.  

HISPASAT 1E was the second large Space Systems/Loral-built telecommunication satellite launched in Ariane 5's most recent two missions, coming after the Intelsat 17 payload lofted on November 26.

Today's successful orbiting of KOREASAT 6 marked the second payload entrusted to Arianespace by KT Corporation, whose KOREASAT 3 satellite was launched in 1999.  KOREASAT 6 had an estimated liftoff mass of 2,850 kg., and was built by an industry team composed of Orbital Sciences Corp. and Thales Alenia Space for the Republic of Korea's KT Corporation.  It will handle broadcasting and communications services across all of South Korea.

Looking to 2011, Arianespace will begin its launch activity on February 15 with an Ariane 5 mission carrying the second European Automated Transfer Vehicle (ATV).

[Salo]

http://www.arianespace.com/news-press-release/2010/12-29-2010-v199-launch-success.asp

Arianespace 6 for 6 in 2010: Last mission of the year orbits Hispasat 1E and Koreasat 6[/size]

Kourou, December 29, 2010

On Wednesday, December 29, Arianespace orbited two communications satellites: Hispasat 1E for the Spanish operator Hispasat, and Koreasat 6 for the KT Corporation.

55th Ariane 5 launch, 41st success in a row

This latest successful Ariane 5 launch, the sixth 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 55th launch of an Ariane 5, and 41st 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 12 commercial geostationary communications satellites out of the total of 19 launched since the beginning of the year, giving it more than 60% of the market.

Supporting major operators worldwide

Since being founded, Arianespace has provided launch services to 78 different customers. Ariane launchers have orbited a total of 289 satellites, representing more than half of all commercial satellites now in service worldwide.

Hispasat 1E is the sixth Spanish satellite launched by Arianespace. In 1992 and 1993 the European launcher orbited Hispasat 1A and 1B. In 2005 and 2006 Hispasat and its subsidiary Hisdesat called on Arianespace to launch the XTAR-Eur and Spainsat satellites. Most recently, Arianespace launched the Amazonas-2 satellite for Hispasat in October 2009.

Koreasat 6 is the second satellite launched by Arianespace for the South Korean operator KT Corporation, after Koreasat 3 in 1999. In June 2010, Arianespace launched the COMS multimission satellite for the Korea Aerospace Research Institute (KARI).

Hispasat 1E/Koreasat 6 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 Wednesday, December 29, 2010 at 6:27 pm local time in Kourou (4:27 pm in Washington, D.C., 21:27 UT, 10:27 pm in Paris and Madrid, and on Wednesday, December 30, at 6:27 am in Seoul).

Hispasat 1E was built by Space Systems/Loral using an LS 1300 platform, and weighed 5,320 kg at launch. Carrying 53 active Ku-band transponders, this powerful satellite will give Hispasat additional capacity, plus an expanded range of video and data transmission services, with European and pan-American coverage. The satellite's design life is 15 years, and it will be positioned in geostationary orbit at 30 degrees West.

Koreasat 6 was built by Thales Alenia Space using a Star-2 platform from Orbital Sciences Corporation of the United States. Weighing nearly 2,850 kg at launch, it is equipped with 30 active Ku-band transponders. The satellite will take over the Koreasat 3 mission with enhanced capability and  provide broadcasting and communications services across all of Korean peninsular from its orbital position at 116 degrees East. The satellite has a design life exceeding 15 years.

[Salo]

http://www.rian.ru/science/20101230/315193144.html

Ariane-5 вывела на орбиту спутники связи для Испании и Южной Кореи[/size]

00:56 30/12/2010

МОСКВА, 30 дек - РИА Новости. Ракета-носитель Ariane-5 в ночь на четверг по московскому времени вывела на орбиту два спутника связи для испанского оператора Hispasat и южнокорейского оператора Korea Telecom, пуск транслировался в прямом эфире на интернет-сайте авиаконцерна Arianespace.

Изначально пуск планировался на 21 декабря, однако его перенесли на одну неделю, поскольку один из клиентов решил провести дополнительную проверку спутника.

Вторая попытка запуска была назначена затем на среду, 28 декабря, однако была отменена из-за плохих погодных условий.

Запуск Ariane-5 стал шестым и последним в 2010 году. Ракета стартовала с экваториального космодрома Куру во французской Гвиане в 00.27 мск (18.27 среды по местному времени).

Первым от ракеты отстыковался спутник HISPASAT 1E, который будет передавать телепрограммы и оказывать другие услуги связи для оператора Hispasat. Спутник будет расположен на позиции 30 градусов западной долготы и покрывать территорию Европы и Америки.

Вторым отстыковался спутник KOREASAT 6, который будет оказывать услуги связи на территории Южной Кореи для оператора Korea Telecom. Он будет расположен на позиции 116 градусов восточной долготы.

[Sharicoff]

Кто-нибудь в курсе, почему Koreasat-6 после запуска стал называться Olleh-1 вместо того, чтобы стать Мугунгхвой-6 (как все предыдущие Кореасаты)?