GSAT-19 – GSLV-D1 (Mk-III / LVM3) – Шрихарикота – 05.06.2017, 11:58 UTC

Автор che wi, 30.11.2016 19:26:41

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che wi

GSLV-Mk III next for Isro to be launched in January

ЦитироватьChennai: The 640-tonne GSLV Mk-III, Isro's heaviest rocket till date, is likely to be launched in January as some stages of the rocket are still undergoing tests.

Isro first had planned to launch the heavy rocket in December end. But the largest cryogenic engine CE-20 developed for this rocket is yet to be delivered as it is undergoing tests at Isro's Propulsion Complex (IPRC) in Mahendragiri, Tamil Nadu.

The indigenous first developmental vehicle is capable of placing the 4-tonne class GSAT satellites into the Geostationary Transfer Orbit. The 43.43-metre tall vehicle has the liquid and cryogenic stage and two S200 solid rocket boosters.

"All the systems are now getting ready. The L110 and S200 stages are already delivered to Satish Dhawan Space Centre in Sriharikota. The cryogenic engine CE-20 is still not delivered as the engine tests are going on," K.Sivan, director, Vikram Sarabhai Space Centre (VSSC), Thiruvanan thapuram told Deccan Chronicle.

The cryogenic stage for the vehicle is expected to be delivered sometime in December. "The exact date for the launch will be finalised only when we finish our tests. It's not like PSLV or GSLV launches. It's a new stage, new testing and some new observations will be there and we have to solve the teething issues. In all likelihood, the launch may go to January," he said.

GSLV-Mk-III rocket will launch the 3.2-tonne GSAT-19 satellite into the Geosynchronous Transfer Orbit. "GSLV-Mk-III will launch the satellite like our regular GSLV rocket," K.Sivan said.

The 25-metre height solid rocket boosters will burn 207 tonne of solid propellant each to give the required thrust to lift off the vehicle. The GSAT-19 satellite will carry Ka and Ku-band payload along with a Geostationary Radiation Spectrometer (GRASP) payload to monitor and study the nature of the charged particles and influence of space radiation on spacecraft and electronic components.

Earlier, Isro had tested the 3,775 kg Crew Module Atmospheric Re-entry Experiment (CARE) using the GSLV-Mk-III rocket which flew with a passive cryogenic stage. The module re-entered the atmosphere from the height of 126 km and deployed its parachutes as planned and splashed down in the Bay of Bengal.

che wi

Цитировать/.../

Департамент также сообщил о готовящемся в первом квартале пуске ракеты-носителя GSLV–D1 с криогенной ступенью. Ракета выведет на орбиту коммуникационный спутник GSAT-19. В сентябре Индия впервые применила криогенную ступень в рабочем порядке во время запуска метеорологического спутника INSAT-3DR. В более ранних пусках ее включали в тестовом режиме.

В департаменте космических исследований рассчитывают, что грузоподъемность GSLV–D1 будет доведена до 4 тонн полезной нагрузки. Также индийские ученые рассчитывают получить одобрение на развитие полукриогенной ступени. Они уже разрабатывают такой двигатель и ожидают, что полукриогенная ступень будет готова в течение пяти лет.
https://ria.ru/space/20161130/1482536974.html

Alex_II

Цитироватьche wi пишет:
индийские ученые рассчитывают получить одобрение на развитие полукриогенной ступени.
Что за зверь такой "полукриогенная ступень"? Кислород-керосин что ли?
И мы пошли за так, на четвертак, за ради бога
В обход и напролом и просто пылью по лучу...

che wi

ЦитироватьAlex_II пишет:
Кислород-керосин что ли?
Не просто керосин, а ISROсин )
немного здесь на стр. 79-80

Alex_II

Цитироватьche wi пишет:
Не просто керосин, а ISROсин )
Да хоть отсосин, дело то не в названии... Вместо того, чтобы сделать двигло на обыкновенном авиакеросине - зачем-то щёки надувают... Хотя планы на 200-тонник мне нравятся...
И мы пошли за так, на четвертак, за ради бога
В обход и напролом и просто пылью по лучу...

che wi

Возможно, к данному пуску

GSLV engine tested at Mahendragiri

ЦитироватьThe Indian Space Research Organisation (ISRO) successfully conducted the test of the Geosynchronous Satellite Launch Vehicle Mk III's indigenous cryogenic CE-20 engine at ISRO Propulsion Complex in Mahendragiri in the district on Saturday.

The CE-20 was ignited and tested for 25 seconds from 7.20 p.m. in the presence of A.S. Kiran Kumar, Chairman, ISRO, to study the performance of the engine that will play a pivotal role in the rocket weighing about 4 tonne.

"The engine, which will get ignited at high altitude in vacuum during actual flight, performed exceptionally well to meet all predetermined goals," said sources in the ISRO Propulsion Complex.

che wi

Сегодня после успешного запуска Resourcesat-2A директор Космического центра им. Викрама Сарабхая сказал, что пуск GSLV-D1 планируется на 20 января.

ЦитироватьSivan said GSLV MK III is scheduled for launch on January 20, 2017.
http://timesofindia.indiatimes.com/india/ISRO-successfully-launches-remote-sensing-satellite-Resourcesat-2A-into-orbit/articleshow/55848146.cms

che wi

High Altitude Flight Acceptance Test of CE20 Engine Conducted Successfully

ЦитироватьGSLV MKIII, the future launch vehicle of ISRO, capable of launching 4-ton class spacecraft into Geosynchronous Transfer Orbit (GTO) is in the advanced stage of realisation. It consists of two solid strap-on (S200) motors, one earth storable liquid core stage (L110) and the indigenously developed C25 cryogenic stage. The C25 stage is powered by CE20 cryogenic engine. The first CE20 flight engine acceptance test was successfully conducted for a duration of 25 seconds in high altitude simulation test facility during December 2016. This flight acceptance test is an important milestone for ISRO as it could successfully cross the major engine development endeavors in the maiden attempt. This engine was conceived, configured, designed, fabricated and developed by Liquid Propulsion Systems Centre (LPSC).

LPSC is the centre for design, development and realisation of liquid propulsion stages for ISRO's Launch Vehicles. Development of fluid control valves, transducers, propellant management devices for vacuum conditions and other key components of liquid propulsion systems are also under the purview of LPSC.

To test the Engine at flight identical conditions, High Altitude Test (HAT) facility was established at IPRC, Mahendragiri. This facility allows testing of the CE20 engine at its full area ratio in vacuum condition which otherwise would experience flow separation at sea level ambient pressures.

The successful engine testing in the high altitude conditions was preceded by multiple tests on two engines with sea level nozzle divergent (area ratio 10). The development test conducted on these engines provided confidence in their design. The design of the flight nozzle was also validated in the medium duration High Altitude Test programme.

The Engine High Altitude Test Programme contained a series of high altitude tests (5 hot tests with a cumulative duration of 41.20 sec) to demonstrate the vacuum ignition, validate the nozzle performance, propellant flow build up characteristics, chill down performance and to demonstrate the ignition margins. All the test objectives were successfully achieved in this test programme. The testing of engine in HAT facility has also helped in finalising the engine start and shut down sequence for flight. Summing up, the test programme has imparted good confidence on the performance and functioning of CE20 Engine in GSLV MKIII (LVM3)-D1 mission.

The realisation of flight stage for the GSLV MKIII (LVM3)-D1 mission is in progress and the first mission is expected by early 2017.

che wi

Пуск отложен до марта-апреля.

Isro postpones GSLV Mk-III launch to March

ЦитироватьChennai: Isro has postponed its heaviest rocket GSLV Mk-III's launch due to pending tests to be conducted on the vehicle. Now, the rocket will either be launched in March or April after completing the tests.

Earlier, the space organisation tentatively planned to launch it on January 20. The GSLV Mk-III rocket will launch the 3.2 tonne GSAT-19 satellite.

"Subsequently, some more tests are planned for the vehicle and the stage level tests also got delayed. Now, these tests will be conducted this month. If any issues arise during the tests we will correct them," K. Sivan, director, Vikram Sarabhai Space Centre (VSSC), Thiruvananthapuram told Deccan Chronicle.

The high altitude test for GSLV Mk-III's large cryogenic engine CE-20 was conducted in December. Isro also plans to send the Saarc satellite with GSLV Mk-II rocket in March.

"We are planning to launch both the GSLV Mk-III and GSLV Mk-II rockets in March and April. Maybe one will be launched in March and another one in April depending on the availability of the launch pad," he said.


che wi

ISRO Successfully Tests its Cryogenic Stage (C25) for GSLV MkIII for the Flight Duration

ЦитироватьThe Indian Space Research Organisation (ISRO) successfully tested its indigenously developed Cryogenic Upper Stage (CUS) for GSLV MkIII on February 17, 2017. The cryogenic stage designated as C25 was tested for a flight duration of 640 seconds at ISRO Propulsion Complex (IPRC) in Mahendragiri. C25 Stage had earlier been tested successfully for 50 seconds on January 25, 2017 to validate all the systems.

Спойлер
Prior to Stage development hot tests, three CE20 engines were realised and two engines were subjected to qualification tests in sea level conditions. This included 800 seconds duration hot test and the third engine identified for flight was tested in high

Altitude conditions for a duration of 25 seconds.

This Stage test is a significant milestone as it is the last in series of engine and stage development hot tests before the first development flight of GSLV MkIII.

The C25 stage is the most powerful upper stage developed by ISRO and uses Liquid Oxygen (LOX) and Liquid Hydrogen (LH2) propellant combination.  The stage carries 27.8 tons of propellants loaded in two independent tanks. Development of a cryogenic stage has unique design challenges, with liquid Hydrogen stored at -253 deg C and liquid Oxygen stored at -195 deg C in its tanks. To store these cryogenic fluids, special multi-layer insulation is provided for the tanks and other structures.

The development of the cryogenic stage was led by Liquid Propulsion Systems Centre (LPSC) with support from various System Development Agencies from other ISRO Centres of ISRO, viz., Vikram Sarabhai Space Centre (VSSC), ISRO Propulsion Complex (IPRC) and Sathish Dhawan Space Centre (SDSC), SHAR.

The Cryogenic Stage development tests were carried out in two phases.  First, the Stage was subjected to fluid mock-up, wherein the stage preparation and servicing at launch complex in SDSC, SHAR, Shriharikota was completed to prove all the ground facilities established for servicing the cryogenic stage. This was followed by testing of the Stage at ISRO Propulsion Complex, Mahendragiri. From the Stage realisation to completion of testing was accomplished in four months.

The performance of the Stage during the hot test was as predicted. Successful hot test for flight duration qualifies the design of the stage and the robustness of the facilities conceived and established towards its development.

The flight cryogenic stage is in advanced stage of realisation, and forms the upper stage of GSLV MkIII the next generation launch vehicle of ISRO, capable of launching 4 ton class satellites into Geosynchronous Transfer Orbit (GTO). The vehicle consists of two solid strap-ons (S200) motors, one earth storable liquid core stage (L110) and the Cryogenic Upper Stage (C25).
[свернуть]
The GSLV MkIII vehicle integration activities are in progress at SDSC, SHAR for its first development flight (GSLV MkIII-D1) targeted for April 2017.

zandr

http://tass.ru/kosmos/4035798
ЦитироватьИндия успешно испытала собственный криогенный двигатель для тяжелой ракеты-носителя
НЬЮ-ДЕЛИ, 18 февраля. /Корр. ТАСС Евгений Пахомов/. Индийская организация космических исследований провела успешное испытание криогенного двигателя собственной разработки, предназначенного для тяжелой ракеты-носителя нового поколения. Как сообщает телеканал NDTV, силовой агрегат проработал полные 10 минут.
Испытания состоялись днем ранее на территории двигателестроительного комплекса в Махендрагири на юге страны. Силовой агрегат предназначен для установки на новой индийской ракете-носителе GSLV Mark III  высотой около 50 м и весом более 414 тонн. Эти испытания стали последними перед запуском ракеты, который может состоятся в этом году, указывает телеканал.
Новый мощный носитель GSLV Mark III сможет выводить грузы до 10 тонн на низкую околоземную орбиту и до 4 тонн - на геосинхронную орбиту. Планируется также, что он может быть использован для выведения на орбиту первого индийского космического корабля с людьми на борту. В перспективе GSLV Mark III также предназначается для запуска межпланетных автоматических станций.
Как указывает NDTV, разработка нового двигателя потребовала почти 20 лет, поскольку в 1990-е годы Россия под давлением США была вынуждена отказаться от передачи индийской стороне технологий производства криогенных силовых установок. Создание такого двигателя - очень сложная задача, ее смогли решить только РФ, США, Франция, Китай, Япония и Индия, отмечает телеканал.


che wi

#13
Очередной сдвиг даты пуска, согласно индийским СМИ: конец мая - начало июня

ЦитироватьThe ISRO had planned to launch the heavy-lift vehicle carrying GSAT-19, a communication satellite, on April 20, but now the sources said the launch would take place only by May end or June first week.
http://www.newindianexpress.com/cities/chennai/2017/mar/23/isro-gears-up-to-flag-off-cryogenic-stage-on-march-27-1584688.html

che wi

ЦитироватьISRO Chairman A S Kiran Kumar said that the developmental flight of a 'game-changer' rocket (launching vehicle) capable of launching a four-tonne class of satellites from Sriharikota spaceport will take place in the coming month. He said that ISRO views operationalisation of this rocket as a "game-changer" mission.
http://www.india.com/business/gslv-mk-iii-d1-isro-to-test-launch-four-tonne-capacity-game-changing-rocket-next-month-2045658/

che wi

ЦитироватьMeanwhile Isro is also gearing up to launch its heaviest rocket GSLV-Mk III later this month and preparations are on for that at the rocket port. "The rocket's first and second stage or engines have been integrated. The satellite GSAT-19 and the cryogenic engine are also at the Sriharikota," an official said.
http://m.tech.firstpost.com/news-analysis/countdown-for-isros-south-asia-satellite-launch-on-board-the-gslv-f09-to-begin-today-374768.html

tnt22

http://economictimes.indiatimes.com/news/science/gslv-mark-iii-launch-why-isros-biggest-challenge-will-be-at-the-end-of-this-month/articleshow/58466879.cms
ЦитироватьGSLV Mark III launch: Why ISRO's biggest challenge will be at the end of this month

By HARI PULAKKAT, ET Bureau | Upd ated: May 02, 2017, 11.36 AM IST

Every engineer works under constraints. For those designing the third generation geostationary launch vehicle (GSLV), the main constraints were the launch facilities at Sriharikota and the capabilities of Indian industry. They could design a big rocket, but the Indian Space Research Organisation (Isro) would have had to build an expensive place to launch them. They would have also had to find companies to make the vehicle components, as making big rocket components was beyond industry capabilities.
Спойлер
When Isro started developing this rocket a decade and a half ago, it was far fr om being a thoroughbred organisation. It was not of great repute, its technical skills not cutting edge and its commercial potential, negligible. The first generation GSLV had just been test-flown, but its satellite had not reached its desired orbit. The GSLV Mark III was a complex vehicle and some of its critical technologies had to be developed from scratch. Isro's cryogenic engine development had hit hurdles and got delayed beyond reasonable measure.

However, by the turn of the century, Isro had shown glimpses of its current prowess. It had learned the art of making satellites. Its polar satellite launch vehicle (PSLV) had begun to put remote-sensing satellites into low earth orbit with precision, and this vehicle was slowly acquiring a reputation for reliability. The PSLV was relatively easier game.

The GSLV was a different matter altogether, requiring powerful solid motors and liquid engines in the early stages and a cryogenic engine on top. GSLV Mark III was conceived as a heavy lifter, by Indian standards, capable of putting communication satellites into a geostationary orbit, 36,000 km above the earth. A powerful cryogenic engine needed to be developed quickly.

[свернуть]
Isro is now readying the vehicle for its first full flight at the end of this month, roughly three weeks after another flight of the current generation GSLV on May 5. Isro has used new ideas in its design, necessitating new methods in manufacturing. Some of these ideas will be tested for the first time in a flight from Sriharikota. It would be the first flight of GSLV III using India's fully-indigenous cryogenic engine. If successful, it would also be India's first launch vehicle qualified for human space flight. "This vehicle is going to be at the frontier for Isro," says G Ayyappan, Mark III project director. "It can be used for human flight as well."
Спойлер
All of these combine to make it one of the most critical flights in Isro's history. Although the space technology frontier has moved on, promising to keep Isro engineers busy for a long time, GSLV Mark III is the culmination of all that Isro initially set out to do when first se t up in the 1960s. When fully ready, it would give Isro self-reliance and the ability to put any satellite into any orbit.

The current flight of GSLV III is a developmental flight. Isro is planning another developmental flight a year later. It takes at least two flawless developmental fights for the vehicle to be ready for commercial use. This year, India will put two communication satellites in orbit using the French Arianne launcher. One of these satellites will weigh 5.6 tonnes. It is beyond the capabilities of even the current GSLV III, which is now being developed to put four-tonne satellites into geostationary orbit. Later versions of the GSLV will be able to put satellites weighing up to seven to eight tonnes into geostationary orbit.

Isro had gone through a difficult period a few years ago, when a launch of its GSLV Mark II failed. This failure had its impact on GSLV Mark III as well. "Because we had problems with Mark II," says Isro chairman Kiran Kumar, "we had to rework some facilities of Mark III for Mark II. So Mark III got slightly delayed." The successful flight of GSLV Mark II in 2014 was thus a major milestone for Isro. It also qualified India's cryogenic engine, which was a reengineered version of the Russian cryogenic engines.

The cryogenic engine in Mark III is entirely designed in India, and is twice as powerful as the Mark II cryogenic engines. Isro has used a different technology for this engine called the gas-generator cycle, primarily because it gave the engineers the freedom to test each component separately. The earlier engine used a method called staged combustion, wh ere the entire engine had to be tested as one entity. "We have now made about 200 tests on the engine and its components separately," says Kiran Kumar.

For the cryogenic engine, Isro had to create new high altitude test facilities at Mahendragiri near Thiruvananthapuram. Isro tested the full engine in April 2015 for 635 seconds, and again in June 2015 for 800 seconds, well beyond the duration of its burning during a real flight. It had two more tests subsequently, one early in 2016 and another in December 2016. The performance of the new cryogenic engine would be the most crucial aspect of the flight later this month, as it is being tested for the first time in a flight. Although there are other new features in the vehicle, some of these have already been tested in a partial flight two years ago. "We had doubts about the configuration," says K Radhakrishnan, former chairman of Isro. "So we decided to have an atmospheric test flight with a passive cryogenic engine."

This flight was on December 18, 2014, when Isro tested the recovery of a crew module. Isro had doubts about the configuration because it had two boosters on either side of the liquid core stage, with the core stage not firing with the boosters. GSLV Mark II had four strap-on motors surrounding the core stage. "The aerodynamics of Mark III special because the strap-ons are in one plane," says S Somanath, former project director of GSLV Mark III and now the director of the Liquid Propulsion Systems Centre near Thiruvananthapuram. The absence of strap-ons in the other plane makes the pitching and yawing manoeuvres slightly different.

At 3.2 meter in diameter, the strap-on motors are the third largest in the world. Apart from their size, the use of two strap-on motors provided another challenge for Isro. The two motors had to match their performance precisely. If not, one would tilt the vehicle to the other side during flight. To avoid this imbalance, Isro made the boosters from one casting, by splitting it into two. It was Isro's first attempt at pair casting. It was to ensure uniformity of material and uniform degradation and it needed the development of new infrastructure.

GSLV Mark III has a core liquid stage with twin engines, another – smaller – novelty in design. The liquid engines would switch on only a 100 seconds after lift-off, but well before the strap-on motors cease firing. The launch vehicle has redundant control electronics, a requirement for any vehicle used for human flight. Isro engineers have provided Mark III with other requirements for human flight vehicle, in terms of acceleration, noise and other safety margins. Isro has already designed and test-flown a crew module.

In the end, the decision for a human flight rests with the politicians. Whether the country embarks on a human flight or not, it is necessary for Isro to design vehicles that can carry heavier and heavier payloads. Not just for communication satellites, but for future inter-planetary missions as well. The GSLV Mark III will fly this month with a 3.2-tonne satellite, the GSAT-19. The vehicle is designed to take a payload of four tonnes, but it would still not be enough for some of Isro's future requirements.

"Satellites are getting heavier and heavier," says K Sivan, director of the Vikram Sarabhai Space Centre (VSSC) in Thiruvananthapuram. "So we have to increase the capacity of the vehicle." GSLV Mark III can be tweaked to later to carry more than six tonnes of payload into a geostationary orbit, by replacing the core liquid stage with a semi-cryogenic engine. This engine is under development, and might take three to four years. After its development, India would be able to put six to seven tonne-class of satellites into a geostationary orbit, and stop using expensive overseas facilities for launching its communication satellites.
[свернуть]

che wi


tnt22

http://timesofindia.indiatimes.com/city/thiruvananthapuram/isro-centres-turn-focus-on-launch-of-gsat-19/articleshowprint/58621659.cms
ЦитироватьIsro centres turn focus on launch of GSAT-19
TNN | May 11, 2017, 09.36 AM IST



THIRUVANANTHAPURAM: After the successful launch of GSAT-9 on board GSLV-Mk II, scientists of ISRO centres here including Vikram Sarabhai Space Centre (VSSC) and Liquid Propulsion Systems Centre (LPSC) are back from Sriharikota. Now, the team of scientists and engineers are focussed on the next mission - GSLV-MK III, boosted with fully indigenous cryogenic engine. The GSLV-Mk III will launch the communication satellite GSAT-19 in May.

"In the previous GSLV launches, some parts of the indigenous cryogenic upper stage (CUS) engine were procured from Russia, but GSLV-Mark II had more indigenous CUS with propellant acquisition system. We used electric propulsion for the first time as part of the launch," said VSSC director K Sivan.

GSLV-Mark II was the eleventh flight of Geosynchronous Satellite Launch Vehicle (GSLV) and the fourth consecutive success achieved by GSLV carrying indigenously developed CUS, the scientists said.

"Now we are focussed on the launch of the developmental flight of GSLV-Mk III-D1 to launch the GSAT-19, a communication satellite with advanced spacecraft technologies including bus subsystem experiments in electrical propulsion System and indigenous lithium ion battery," GSLV Mk III project director G Ayyappan said. This GSLV-MK III rocket with totally indigenous CUS will weigh about 3.5 tons as against the GSLV-MK II vehicle with indigenous CUS stage weighing 2.2 tons, he said.

LPSC director S Somnath had earlier said that the GSLV-Mk III is set to launch the communication satellite GSAT-19 by May end and then Earth observation satellite Cartosat-2E will be launched via PSLV-C38 by June first week.

che wi

ЦитироватьGSAT-19 Spacecraft was flagged off from ISRO Satellite Centre to SDSC-SHAR launch pad on 1st May 2017
http://www.isac.gov.in/flagoff-GSAT-19.jsp