EOS-03 (GISAT-1) – GSLV-MkII (F10) – Шрихарикота 2 – 12.08.2021 00:13 UTC авария

[zandr]

https://www.news18.com/news/explainers/explained-india-in-real-time-and-hi-res-how-isros-gisat-1-will-be-a-game-changer-4062119.html

EXPLAINED: India In Real-Time And Hi-Res. How Isro's Gisat-1 Will Be A 'Game-Changer'
Indian space scientists are set to add another feather to their caps with the launch of the country's first state-of-the-art agile Earth Observation Satellite (EOS) on August 12. Perched in an orbit high above the Earth, this "eye in the sky" will allow real-time monitoring of the entire subcontinent, helping with everything from agriculture to defence.
WHAT IS GISAT-1?
Developed by the Indian Space Research Organisation (ISRO), Gisat is an imaging satellite that will be launched via the indigenously made Geosynchronous Satellite Launch Vehicle-F10 (GSLV-F10) from the Satish Dhawan Space Centre at Sriharikota in Andhra Pradesh. The tentative take-off is at 5.43 am on August 12, 2021, weather permitting.

WHAT IS GISAT-1?
Developed by the Indian Space Research Organisation (ISRO), Gisat is an imaging satellite that will be launched via the indigenously made Geosynchronous Satellite Launch Vehicle-F10 (GSLV-F10) from the Satish Dhawan Space Centre at Sriharikota in Andhra Pradesh. The tentative take-off is at 5.43 am on August 12, 2021, weather permitting.

The satellite weighs more than 2 tonnes and ISRO will for the first time be using an Ogive-shaped fairing — basically, a classic bullet-shaped pointed curved surface casing — with the view to accommodating a larger payload.
The satellite will be placed by GSLV-F10 in a geosynchronous transfer orbit following which it will climb to its geostationary orbit at a height of about 36,000 km above the Earth's surface using its onboard propulsion system.
...

[zandr]

https://twitter.com/isro/status/1425224030135545857

ISRO  @isro
Countdown for the launch of GSLV-F10/EOS-03 mission commenced today at 0343Hrs (IST) from Satish Dhawan Space Centre (SDSC) SHAR, Sriharikota
#GSLVF10 #EOS03 #ISRO

[zandr]

ISRO  @isro
Filling of the oxidizer for the second stage (GS2) of GSLV-F10 completed
#GSLVF10 #EOS03 #ISRO
Stay tuned for more updates...
.
Filling of propellant for the second stage (GS2) of GSLV-F10 commenced.
.
Filling of propellant for the liquid strap-ons (L40) of GSLV-F10 commenced

[zandr]

ISRO  @isro
Filling of oxidizer for the liquid strap-ons (L40) of GSLV-F10 commenced
.
Filling of oxidizer for the liquid strap-ons (L40) of GSLV-F10 completed
#GSLVF10 #E0S03 #ISRO

[zandr]

ISRO  @isro
52 m tall GSLV-F10 carrying EOS-03 at the launch pad in Sriharikota.

Live telecast of launch begins at 05:10 am IST on Aug 12, 2021 

Код Выделить Развернуть

https://isro.gov.in/watch-live-launch-of-gslv-f10-eos-03-aug-12-2021-0510-hrs-ist

Код Выделить Развернуть

https://twitter.com/isro

Код Выделить Развернуть

https://facebook.com/ISRO

Код Выделить Развернуть

https://youtu.be/nMAQdfjWXvM#GSLVF10 #EOS03 #ISRO

[Gradient]

что-то пошло не так (с)

[zandr]

https://tass.ru/kosmos/12110977

Индия сообщила об успешном старте ракеты со спутником наблюдения Земли
НЬЮ-ДЕЛИ, 12 августа. /ТАСС/. Индийская организация космических исследований (ISRO) осуществила в четверг успешный запуск ракеты-носителя GSLV-F10 со спутником EOS-03 на борту. Как сообщила ISRO на своей странице в Twitter, старт состоялся с космодрома центра имени Сатиша Дхавана на острове Шрихарикота.

"GSLV-F10 успешно взлетела [со стартового стола] космического центра Сатиша Дхавана, Шрихарикота", - говорится в сообщении.

EOS-03 - новейший спутник наблюдения Земли, который планируется вывести на геостационарную орбиту. Аппарат поможет проводить быстрый мониторинг таких опасных погодных явлений, как циклоны, грозовые фронты и другие.

[zandr]

https://tass.ru/kosmos/12111205

У запущенного индийского спутника после взлета произошли технические неполадки
НЬЮ-ДЕЛИ, 12 августа. /ТАСС/. Индийская организация космических исследований (ISRO) сообщила в четверг, что у запущенной ракеты-носителя GSLV-F10 (Geosynchronous Satellite Launch Vehicle, ракета-носитель для запусков геосинхронных спутников) со спутником EOS-03 на борту произошли технические неполадки, и миссия не может быть выполнена, как это было запланировано. Об этом сообщает ISRO на своей странице в Twitter.

"Запуск ракеты-носителя GSLV-F10 состоялся сегодня в 05:43 часов по индийскому времени (03:13 мск) в соответствии с графиком. Работа первой и второй ступеней была нормальной. Однако зажигания криогенной верхней ступени не произошло из-за технической аномалии. Миссия не могла быть выполнена так, как предполагалось", - отметила ISRO. Другой информации пока не сообщается.

Спойлер

Как раннее сообщало это индийское космическое ведомство, EOS-03 (Earth Observation Satellite) - новейший спутник наблюдения Земли, который должен размещаться на геостационарной орбите. Аппарат предназначен для того, чтобы проводить быстрый мониторинг угрожающих погодных явлений вроде циклонов, грозовых фронтов и других.

[свернуть]

[zandr]

Код Выделить Развернуть

https://www.youtube.com/watch?v=3orNnl5gCTs

4:32
GSLV-F10 fails to launch EOS-03
  SciNews
A Geosynchronous Satellite Launch Vehicle Mk II (GSLV-F10) launched the EOS-03 satellite from the Second Launch Pad (SLP) of the Satish Dhawan Space Centre (SDSC) SHAR, Sriharikota, India, on 12 August 2021, at 00:13 UTC (05:43 IST). The satellite was not placed into the desired orbit due to a problem with the third cryogenic stage. According to ISRO, "EOS-03 is a state-of-the-art agile Earth observation satellite". The GSLV-F10 mission was the fourteenth flight of ISRO's Geosynchronous Satellite Launch Vehicle (GSLV).

Спойлер

Credit: Indian Space Research Organisation (ISRO)
ISRO GSLV-F10 mission
GSLV Mk II launches EOS-03

[свернуть]

[zandr]

Spaceflight Now  @SpaceflightNow
An Indian Geosynchronous Satellite Launch Vehicle tumbled out of control five minutes after liftoff Wednesday when an upper stage engine didn't ignite, dooming an Earth-imaging spacecraft and ending a streak of 16 straight successful Indian space launches.
https://spaceflightnow.com/2021/08/12/indian-rocket-failure-blamed-on-upper-stage-malfunction/

5 минут...

[zandr]

Jonathan McDowell  @planet4589
I estimate that the EOS-03 satellite and the GSLV CUS third stage reached a -4500 x 140 km x 17.9 deg orbit and impacted the Andaman Sea near the second stage impact zone at 96E 9N at about 0023 UTC, 10 minutes after launch from Satish Dhawan Space Centre

[Старый]

Во! Водород не могут поджечь, а вы тут со своим метаном! 
Двигатель у них случайно не цельнотянутый с Арианы-4?

[Старый]

Викас они купили, может и водородник тоже?

[Павел73]

Чего там ещё стряслось?

[zandr]

Павел73, что стряслось - написано выше.

[Старый]

Чего там ещё стряслось?

Что-то стряхнулось. 

[Veganin]

Во! Водород не могут поджечь, а вы тут со своим метаном! 
Двигатель у них случайно не цельнотянутый с Арианы-4?

ISRO's Cryogenic Upper Stage Project (CUSP) envisaged the design and development of the indigenous Cryogenic Upper Stage to replace the stage procured from Russia and used in GSLV flights. The main engine and two smaller steering engines of CUS together develop a nominal thrust of 73.55 kN in vacuum. During the flight, CUS fires for a nominal duration of 720 seconds.

https://www.isro.gov.in/gslv-d5-gsat-14/indigenous-cryogenic-engine-and-stage

15.04.2010 уже была подобная авария у индийцев:
https://www.isro.gov.in/update/09-jul-2010/gslv-d3-failure-analysis-report
Обсуждение на форуме аварии GSLV-D3:
GSAT-4+GAGAN=GSLV-D3(Mk.2)- 15.04.10 14:57 ЛМВ -авария
https://forum.novosti-kosmonavtiki.ru/index.php?topic=10183.60

При неуправляемом полёте скорость изменялась бы в любом случае.

Водородник не запустился, поскольку зажигание не отрабатывалось на вакуумном стенде:
http://beta.thehindu.com/sci-tech/science/article399411.ece

Why didn't the cryogenic engine ignite?
T. S. Subramaniam

The non-ignition of the cryogenic engine on board the Geo-Synchronous Satellite Launch Vehicle (GSLV-D3) led to the failure of the mission on Thursday (April 15), the Indian Space Research Organisation (ISRO) has more or less concluded. "The cryogenic engine has not ignited, that is for sure. Why it has not ignited, the reasons have to be found out," said S. Satish, ISRO spokesman, on Friday.

All the telemetry data had come in by 1 p.m. on Friday and the ISRO top-brass was studying them line by line. The GSLV-D3 is a three-stage rocket and it was flying with an indigenous cryogenic engine for the first time.

A cryogenic engine uses liquid hydrogen at minus 253 degrees Celsius as fuel and liquid oxygen at minus 183 degrees as oxidiser. The vehicle lifted off as planned at 4.27 p.m. and its performance was normal up to the end of its second stage till 293 seconds from the lift-off. But the vehicle developed problems when the cryogenic upper stage should have ignited 304 seconds after the lift-off, and it fell into the sea.

An authoritative former ISRO official said: "It is very clear that the cryogenic engine did not ignite when you look at the curve [of the vehicle's trajectory], everything was normal up to the GS2 [second stage] shutdown. Then you can see clearly that there is no increment in the vehicle's velocity. The velocity is the same. It started losing its altitude also."

The ISRO rocket engineers are puzzled why the cryogenic engine did not fire at all. [/color]On April 9, they had repeatedly told reporters at Sriharikota that the GSLV-D3 was "the most reviewed vehicle" because it was flying an indigenous cryogenic engine for the first time.

A national panel consisting of former ISRO chairmen, specialists in cryogenic technology and academicians had reviewed the vehicle several times and signalled the go-ahead. But for these repeated reviews, the flight would have taken place in December 2009, they had said.

Besides, the indigenous cryogenic engine was tested on the ground cumulatively for 7,767 seconds, while it would fire for only 720 seconds in flight.

Post-flight, ISRO Chairman K. Radhakrishnan said the entire cryogenic stage, including its engine, passed the qualification test on November 15, 2007 when it fired for 720 seconds. "In the last three years, we have been working on the flight-engine," he said. But he pointed to one big difficulty — the ignition of the cryogenic engine taking place in the vacuum of space [which cannot be simulated on the ground].

S. Ramakrishnan, Director (Projects), Vikram Sarabhai Space Centre, Thiruvananthapuram, also noted, "Ignition in vacuum of the cryogenic engine could be done only in flight."

[Arzach]

Согласно последней информации, полученной на основе изучения собранных данных и моделирования, причиной неудачи стал недобор давления в баке горючего криогенной верхней ступени (CUS) из-за неправильной работы предохранительного клапана сброса давления. Следствием стала нештатная работа подкачивающего турбонасоса горючего (FBTP) из-за чего бортовой компьютер на 307 секунде прервал выполнение миссии.

https://www.isro.gov.in/update/25-mar-2022/gslv-f10-eos-03-mission-failure-failure-analysis-committee-submits-conclusions