GSAT-5P \\ GSLV-F06 - 25.12.10 13:34 ДМВ - авария

[Salo]

http://www.isro.org/gslv-f06/Imagegallery/satellite.aspx

[Salo]

Пуск отложен из-за течи клапана криогенного блока:
http://www.thehindu.com/news/article963362.ece

Chennai, Декабрь 19, 2010
Leak stalls GSLV launch[/size]

The launch of Geo-synchronous Satellite Launch Vehicle (GSLV-F06) with the satellite GSAT-5P on board, slated to take place from Sriharikota at 4.01 p.m. on Monday (December 20), has been postponed. The Indian Space Research Organisation (ISRO) took this decision after its rocket technologists detected on Saturday evening the leak of helium gas from one of the valves in the Russian upper cryogenic stage of the vehicle. The leak rate was on the higher side. The leak was noticed during the pre-countdown check of the vehicle.

The Launch Authorisation Board, which met at the spaceport at Sriharikota on Sunday morning, therefore, decided not to give the go-ahead to the 29-hour countdown which was to begin at 11 a.m. on Sunday.

A high-ranking ISRO rocket engineer said: "We have to find out the real cause for the leak of helium from one of the valves in the upper cryogenic stage. The leak rate was slightly on the higher side. We have to do some testing to make sure that the leak rate is acceptable. We found out the problem during the pre-countdown checks before the cryogenic propellants – liquid hydrogen and liquid oxygen – were pumped into the cryogenic stage." He argued that the leak was a common problem. He was confident the problem would be resolved and that the GSLV-F06 would lift off in two to three days' time.

The GSLV-F06 has three stages. The core first stage uses solid propellants. Four booster motors, powered by liquid propellants, are strapped to the core first stage. The second stage uses liquid propellants. The third upper cryogenic stage is from Russia.

The GSAT-5P is a satellite with 36 transponders which can be used for beaming television and radio programmes and telephonic conversations, for conducting telemedicine and tele-education programmes and organising banking services.


One of the L 40 strap-ons being lifted for fitting to GSLV-F06 first stage. Photo: ISRO

[Salo]

http://www.isro.org/news/pdf/gslv-f06.pdf

Launch of GSLV-F06 / GSAT-5P Mission Postponed[/size]
 
The launch of GSLV-F06 with  GSAT-5P Satellite onboard, scheduled for December 20, 2010 has been postponed due to a minor leak in one of the valves of the Russian Cryogenic stage, observed during the pre-countdown checks.
 
The 29-hours countdown sequence planned to commence at 1100 hrs today (Dec 19th) has not been authorized by the Launch Authorisation Board that met this forenoon to review the results of pre-countdown checks.
 
The revised schedule for launch will be firmed up after ascertaining the cause for the leak, remedial actions and due verifications.  

[Salo]

http://news.in.msn.com/national/article.aspx?cp-documentid=4720346

20/12/2010
ISRO may take a call on GSLV mission tomorrow[/size]

Bangalore,Dec20 (PTI) Indian Space Research Organisation is expected to take a decision tomorrow on the fresh date for launch of GSAT-5P satellite on board Geo-Synchronous Satellite Launch Vehicle (GSLV-F06) after conducting an experiment to study the leak that led to the mission''s postponement.
As of now, it appears to be a "liveable leak", an ISRO official told PTI here, a day after the space agency put off the launch from the spaceport of Sriharikota due to a "minor leak" in one of the valves of the Russian Cryogenic stage, observed during the pre-countdown checks.
"We are planning to do a small experiment tomorrow to ascertain the cause for the leak. If the leak is the same (as noticed during the pre-countdown checks), then we can go ahead with the launch. If the leak is increasing... beyond certain limits, then we have to stop (the mission)," the official said on condition of anonymity.
If things are okay after verifications, ISRO might schedule the launch for Thursday, sources in the Bangalore-headquartered agency said.
The 29-hour countdown planned to commence at 11 am yesterday had not been authorised by the Launch Authorisation Board that met in the forenoon to review the results of pre-countdown checks.

[Salo]

http://www.sify.com/news/indian-russian-scientists-discuss-rocket-launch-delay-news-national-kmunEmigddj.html

Indian, Russian scientists discuss rocket launch delay[/size]

2010-12-20 13:40:00

Chennai, Dec 20 (IANS) Indian and Russian space scientists are discussing the remedial measures that need to be taken after a leak was detected in the cryogenic engine of a rocket that was to place an advanced communications satellite into orbit Monday.

The Indian Space Research Organisation (ISRO) Sunday decided to postpone the rocket's launch after it detected the leak in one of the valves of the Russian-made cryogenic engine during the pre-countdown mandatory tests even as the 51-metre tall rocket was on the launch pad.

The rocket, called the geosynchronous satellite launch vehicle (GSLV) was to carry GSAT-5P, an advanced communications satellite meant to retire an earlier one sent up in 1999 and ensure continuity of telecom, TV and weather services.

S. Satish, a director at ISRO, said: 'There is a small team of Russian experts at the rocket port whenever a rocket is flown with their cryogenic engine.'

He said the Russians had supplied seven cryogenic engines, of which five were used in the earlier GSLV rockets.

The 29-hour countdown, planned to commence at 11.01 a.m. Sunday, was not authorised by the Launch Authorisation Board. The board met Sunday forenoon at the Sriharikota rocket launch centre to review the results of pre-countdown checks and decided against proceeding with the mission.

According to ISRO officials, the GSLV rocket has three stages. The first stage is fired by solid fuel and hugged by four strap-on motors fired by liquid fuel. The strap-on motors give additional thrust during the lift off and the initial phase of the rocket's flight.

The second stage/engine is fired by liquid fuel and the third and complex stage is the cryogenic engine powered by liquid hydrogen as fuel and liquid oxygen as oxidizer.

The solid fuel is cast ready while the liquid fuel is filled hours before the rocket's blast-off.

Sources close to ISRO told IANS that there are standard leak rates for valves. Only when this exceeds the minimum level are alarm bells sounded.

ISRO officials said that since the cryogenic engine is supplied by Russia, their expertise and consent will be obtained on how to plug the leak.

If at all the valve has to be replaced, then it has to be supplied by the Russians, the sources said.

'The components of Indian cryogenic engine are of varied specifications and will not fit the Russian made one. The Russians had supplied the seven cryogenic engines long ago,' the source told IANS.

According to officials, dismantling of the cryogenic engine with the faulty valve and fitting the rocket with another one will take time.

'The new engine's systems have to be checked and it will take over a month to make it flight ready,' a source said.

According to ISRO officials, a delay in the GSAT-5P launch will not affect any of its customers as the earlier satellite INSAT-2E is still operational.

[Tiger]

Не дай бог и тут нам течь репутацию подмочит.  :?

[Salo]

http://netindian.in/news/2010/12/21/0009425/isro-take-final-decision-gslv-launch-tomorrow

ISRO to take final decision on GSLV launch tomorrow[/size]

Submitted by admin2 on Tue, 12/21/2010 - 23:55

United News of India
Chennai, December 21, 2010

A final decision on a new date for the launch of India's advanced and heaviest communication satellite GSAT-5P, by the Geosynchronous Satellite Launch Vehicle (GSLV-F06), using Russian cryogenic stage, is expected to be taken by tomorrow afternoon.

Indian Space Research Organisation (ISRO) sources told UNI here today crucial tests were going at the spaceport of Sriharikota, about 100 km from here, in this regard.

"The tests will continue till tomorrow morning. After the outcome of the tests are known, the scientists will take a final decision on the launch of GSLV Mission", ISRO spokesman S Satish said.

The launch was earlier scheduled for Decemebr 20, but it was postponed after a leak was noticed in one of the valves of the Russian cryogenic engine during pre-countdown tests.

Subsequently, the T-29 hour countdown, scheduled to begin at 1101 hrs on December 19, was stopped.

The spokesman told UNI that an announcement on the date of launch was expected around tomorrow afternoon.

"The tests are continuing and will continue all through the night and tomorrow morning. We can expect some announcement on the date of launch by tomorrow afternoon," he added.

[Salo]

http://www.domain-b.com/aero/space/satellites/20101222_flight_plans.html

ISRO clears GSLV launch after tests news[/size]   

22 December 2010      
Chennai: The Indian Space Research Organisation (ISRO) on Wednesday began preparing for the launch of an advanced communications satellite once again after investigations into a leaking rocket engine valve revealed no danger to flight plans.

The flight of ISRO's heaviest rocket, the Geosynchronous Satellite Launch Vehicle (GSLV-F06), which has a cryogenic final stage, had to be aborted after the fault developed. The cryogenic engine has been supplied by Russia.

The leak in the engine was detected during the pre-countdown tests on Sunday, even as the 51-metre tall rocket was already placed on the launch pad at Sriharikota.

The GSAT-5P satellite is meant to retire the INSAT-2E sent up in 1999 and ensure continuity of telecom, TV and weather services. The flight was originally scheduled for Monday.

According to S Satish, director, ISRO: ''The test results are satisfactory and the rocket's launch date is being finalised.''

The tests were conducted Tuesday to gauge the extent of the valve leak in consultation with Russian scientists. The Russians had supplied seven cryogenic engines through an earlier contract, of which five have already been used in earlier GSLV launches.

[Salo]

http://news.in.msn.com/national/article.aspx?cp-documentid=4730640

GSLV mission to be launched on Dec 25
[/size]
Bangalore, Dec 22 (PTI) The launch of India''s latest communication satellite GSAT-5P has now been slated for December 25, a week after it was put off following a leak in the Russian cryogenic stage of the launch vehicle.

"The launch is scheduled for December 25 at 4.01 pm (from the spaceport of Sriharikota in Andhra Pradesh). A 29-hour countdown will start on December 24 at 11.01 am," Indian Space Research Organisation (ISRO) spokesperson S Satish told PTI here.

The satellite would be launched by ISRO''s Geo-Synchronous Satellite Launch Vehicle (GSLV-F06), powered by Russian cryogenic stage.

The spacecraft, which would boost India''s communication services including TV and telecommunication, was originally slated for launch on December 20.

But a day earlier, the space agency put off the launch due to a "minor leak" in one of the valves of the Russian Cryogenic stage, observed during the pre-countdown checks.

After the postponement, ISRO said the revised date would be finalised after ascertaining the cause of the leak, remedial actions and due verifications.

Earlier in the day, another ISRO official said on condition of anonymity that the "leak had remained the same and it had not increased which means it is a liveable leak and the mission had been given a go-ahead".

[Salo]

http://www.sify.com/news/india-to-launch-advanced-communications-satellite-dec-25-news-national-kmwv4jcigic.html

India to launch advanced communications satellite Dec 25[/size]
2010-12-22 21:30:00

Chennai, Dec 22 (IANS) With investigations into a leak in a rocket engine's valve providing satisfactory results Wednesday, the Indian Space Research Organisation (ISRO) will celebrate Christmas by launching an advanced communications satellite, an official.

'The test results are satisfactory and the rocket's launch is scheduled Dec 25. The launch countdown will begin 11 a.m. Friday,'

S. Satish, a director at ISRO, told IANS.

The rocket carrying the GSAT-5P satellite is expected to blast off from the second launch pad between 4 p.m.-4.15 p.m. Saturday.

The GSAT-5P is meant to retire the INSAT-2E satellite sent up in 1999 to ensure continuity of telecom, TV and weather services and was originally scheduled for Monday.

However, ISRO Sunday decided to postpone the launch of its geosynchronous satellite launch vehicle (GSLV) after it detected a leak in one of the valves of its Russian-made cryogenic engine.

The leak was detected during the pre-countdown tests, even as the 51-metre tall rocket was on the launch pad at Sriharikota, around 80 km from here.

ISRO officials had said some tests would be conducted Tuesday to gauge the extent of the valve leak. They said the tests and discussions with Russian scientists would go hand-in-hand at Sriharikota.

The Russians had supplied seven cryogenic engines, of which five were used in earlier GSLV launches.

Another ISRO official, speaking on condition of anonymity, told IANS that the tests took around 30 hours and involved filling of liquid oxygen to check the valve. The liquid oxygen had to be later drained. The rocket's ground systems had to be reconfigured for the tests.

The cryogenic engine is fired by liquid hydrogen as fuel and liquid oxygen as oxidizer.

According to the official, the valve leak was in the liquid oxygen system while all other valves were functioning well.

He said the tests started Tuesday at 4 a.m. and concluded at around 8 a.m. Wednesday.

'The activities undertaken were similar to the ones carried out for a regular rocket launch. Around 100 scientists and technologists were involved in tests,' he said.

[Salo]

http://www.rian.ru/science/20101223/312361155.html

Тяжелая индийская ракета-носитель GSLV стартует 25 декабря[/size]
09:45 23/12/2010

НЬЮ-ДЕЛИ, 23 дек - РИА Новости, Евгений Безека. Старт тяжелой индийской ракеты-носителя GSLV со спутником связи GSAT, не состоявшийся 20 декабря из-за протечки на российском разгонном блоке, перенесен на субботу, сообщил РИА Новости пресс-секретарь Индийской организации космических исследований (ИСРО) Сатиш.

Старт 20 декабря был отменен из-за обнаруженной протечки топлива на одной из стенок криогенного разгонного блока "12КРБ" российского производства, установленного на этой ракете.

"Протечка не была существенной, но вызвала обеспокоенность. Сейчас все озабоченности сняты. Пуск ракеты назначен на 16.00 (13.30 мск) субботы, завтра будет начат обратный отсчет", - сказал представитель ИСРО в четверг.

Индия вновь вернулась к российским блокам из-за отказа весной 2010 года собственного блока, который должен был прийти на смену российскому. 15 апреля ракета GSLV (Geosynchronous Satellite Launch Vehicle) со спутником GSAT упала в море в результате выхода из строя топливного турбонасоса разгонного блока. После этого было принято решение до устранения технических проблем использовать для последующих запусков GSLV последние два оставшиеся на складе у ИСРО блока "12КРБ".

В ходе субботнего запуска в космос будет выведен спутник GSAT массой 2310 килограммов, который обеспечит связь в частотном диапазоне "с". Расчетный срок службы этого коммерческого аппарата составляет около 14 лет.

Кислородно-водородный разгонный блок "12КРБ" разработан и изготовлен в НПЦ имени Хруничева по соглашению с ИСРО специально для 50-метровой GSLV, стартовая масса которой превышает 400 тонн. В качестве маршевого двигателя этого блока используется жидкостной двигатель на криогенных компонентах топлива (жидкий кислород и жидкий водород) разработки КБ химического машиностроения имени Исаева. "12КРБ" в составе ракеты GSLV обеспечивает выведение на геопереходную орбиту космических аппаратов массой до 2,5 тонны с космодрома Шрихарикота. Первый успешный пуск GSLV с криогенным разгонным блоком "12КРБ" был осуществлен 18 апреля 2001 года.

Индия претендует на то, чтобы стать шестой страной, овладевшей технологией создания криогенных разгонных блоков, необходимых для вывода тяжелых спутников на геостационарную орбиту. В настоящее время такие технологии используют только США, Россия, Франция, Япония и Китай.

[Salo]

Официальное подтверждение даты и времени пуска:
http://isro.org/news/pdf/GSLV-F06Reschedule.pdf

[us2-star]

Трансляция, вероятно, будет где-то в окрестостях: http://www.ndtv.com/news/videos/video_live.php?id=LIVE_BG24x7&live=tv ?

[Valerij]

Трансляция, вероятно, будет где-то в окрестостях: http://www.ndtv.com/news/videos/video_live.php?id=LIVE_BG24x7&live=tv ?

А во сколько, и, если можно - точную ссылку. Пожалуйста....

[Salo]

Поднимите глаза на заголовок темы и Вам откроется.

А в это время в Шрихарикоте:

http://www.thehindu.com/sci-tech/science/article974181.ece

Countdown starts for GSAT-5P launch[/size]

The count down has started for the launch of India's latest communication satellite GSAT-5P on board GSLV-F06 launch vehicle from Sriharikota on Saturday.

ISRO spokesperson S Satish told PTI that the 30-hour count down started at 10.04 hours this morning and was progressing well.

The launch of the satellite, which was originally scheduled for December 20, had been postponed after a leak in the Russian cryogenic engine on board the launch vehicle.

GSAT-5P with 24 C-band transponders and 12 extended C-band transponders is meant for augmenting communication services currently provided by Indian National Satellite System (INSAT). It is meant to boost TV, telemedicine and tele-education, and telephone services.

The satellite, developed by ISRO Satellite Centre, Bangalore, is the fifth in the GSAT series. It has a designed mission life of 12 years.


The fully integrated, three-stage GSLV-F06 at Sriharikota. File Photo

[Salo]

http://www.samachartoday.com/count-down-for-scheduled-launch-of-gslv-f-06-begins-this-evening/14287

The countdown for the launch of GSLV-F06 from Sriharikota this evening is proceeding smoothly. The lift off is scheduled for 4.04 pm.ISRO spokesman Mr Satish told our Chennai correspondent the countdown activities are proceeding without any hitch.

[LRV_75]

Ферма обслуживания впечатляет. А они должны отъехать перед стартом?

[Salo]

Да. Но это скорее башня, как у Протона.

[Salo]

http://economictimes.indiatimes.com/news/news-by-industry/et-cetera/countdown-for-gsat-satellite-launch-begins/articleshow/7161823.cms

25 Dec, 2010, 12.53PM IST,IANS
Countdown for GSAT satellite launch begins[/size]

CHENNAI: Advanced communication satellite GSAT-5P - which will ensure continuity of telecom, television and weather services after an earlier satellite is retired - is set to be launched on Saturday evening at the Sriharikota rocket launch centre in Tamil Nadu .

If all goes well, the rocket geosynchronous satellite launch vehicle (GSLV) will lift off at 4.04 p.m., Saturday, said an official of the Indian Space Research Organisation (ISRO).

The progress to launch the Rs125 crore (Rs.1.25 billion) GSAT-5P satellite weighing 2,310 kg has been smooth.

The satellite will serve the needs of the telecommunication sector and the weather department. It will eventually retire the INSAT-2E satellite that was sent up in 1999. The Sriharikota rocket launch centre is about 80 km from here.

"We have completed filling of liquid fuel in the four strap on motors and the second stage of the rocket. Fuel filling activities for the cryogenic engine have started," the official said.

The filling of liquid fuel was completed around 2 a.m. on Saturday. "We have filled a total of 206 tonnes of fuel," the official said.

The GSLV rocket has three stages. The first stage is fired by solid fuel. The four strap on motors give additional thrust during the lift-off and the initial phase of the rocket's flight.

The second stage is fired by liquid fuel. The third stage, which is more complex than the others, involves the cryogenic engine powered by liquid hydrogen as fuel and liquid oxygen as oxidiser.

The GSLV rocket is 51 metres tall, weighs 418 tonnes.

The GSAT-5P satellite with a life span of over 13 years has 36 transponders - automatic receivers and transmitters for communication and broadcast of signals. Successful launch of GSAT-5P will take the agency's transponder capacity to about 235 from the 200 currently in the orbit.

ISRO has the following communication satellites in service - INSAT 2E, INSAT 3A, INSAT 3B, INSAT 3C, INSAT 3E, INSAT 4A, INSAT 4CR and INSAT 4B working at 50 percent capability.

ISRO launched two major satellites in 2010 - communication satellite GSAT-4 and remote sensing satellite Cartosat-2. GSAT-4 launch failed after the rocket crashed into the Bay of Bengal while Cartosat-2 was placed successfully in the orbit.

[Salo]

Трансляции возможны:
http://www.ndtv.com/video/live/channel/ndtv24x7
http://www.timesnow.tv/
http://ibnlive.in.com/livetv/