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ЦитироватьISRO ‏@isro  (https://twitter.com/isro) · 31m ago (https://twitter.com/isro/status/633940352756412417)

GSLV-D6 / GSAT-6 Launch on Aug 27, 2015 at 16:52 Hrs IST

ЦитироватьGSAT-6
(https://img.novosti-kosmonavtiki.ru/230428.jpg)
GSAT-6 is the twenty fifth geostationary communication satellite of India built by ISRO and twelfth in the GSAT series. Five of GSAT-6's predecessors were launched by GSLV during 2001, 2003, 2004, 2007 and 2014 respectively. After its commissioning, GSAT-6 will join the group of India's other operational geostationary satellites.
GSAT-6 Satellite provides communication through five spot beams in S-band and a national beam in C-band for strategic users. The cuboid shaped GSAT-6 has a lift-off mass of 2117 kg. Of this, propellants weigh 1132 kg and the dry mass of the satellite is 985 kg.
One of the advanced features of GSAT-6 satellite is its S-Band Unfurlable Antenna of 6 m diameter. This is the largest satellite antenna realised by ISRO. This antenna is utilised for five spot beams over the Indian main land. The spot beams exploit the frequency reuse scheme to increase frequency spectrum utilisation efficiency. The other advanced feature of the satellite is the 70 V bus, which is flying first time in an Indian communication satellite
. After its injection into GTO by GSLV-D6, ISRO's Master Control Facility (MCF) at Hassan takes control of GSAT-6 and performs the initial orbit raising manoeuvres by repeatedly firing the Liquid Apogee Motor (LAM) on-board the satellite, finally placing it in the circular Geostationary Orbit. After this, deployment of the antenna and three axis stabilisation of the satellite will be performed. GSAT-6 will be positioned at 83 deg East longitude.

Launch Mass: 2117 kg

Dimension: 2.1 x 2.5 x 4.1

Mission Life: 9 years

Power: Generated power 3100 W

Type of Satellite: Communication (http://www.isro.gov.in/category-satellite-type/communication)

Manufacturer: ISRO

Owner: ISRO

ЦитироватьA1536/15 - REF CHENNAI NOTAM A1493/15. GSLV-D6 ROCKET LAUNCH FM SHAR RANGE,SRIHARIKOTA,INDIA IS SCHEDULED ON 27 AUG 2015 BTN 1100-1430 UTC. ATC MAY REROUTE TRAFFIC DURING THE PERIOD AS PER ROUTINGS GIVEN IN THE ABOVE NOTAM. LAUNCH WINDOW FOR THE REMAINING PERIOD FROM 28 AUG 2015 TO 24 SEPT 2015 SHALL BE KEPT ALIVE FOR RESCHEDULING OF LAUNCH IF REQUIRED. GND - UNL, 27 AUG 11:00 2015 UNTIL 27 AUG 14:30 2015. CREATED: 24 AUG 09:58 2015

A1493/15 - E)GSLV-D6 ROCKET LAUNCH FROM SHAR RANGE,SRIHARIKOTA WILL TAKE PLACE AS PER FLW DETAILS. THE LAUNCH WILL BE ON ANY ONE OF THE DAY DRG THIS PERIOD. ACTUAL DATE OF LAUNCH WILL BE INTIMATED 24 HR IN ADVANCE THROUGH A SEPARATE NOTAM. LAUNCH PAD COORD: 1343.2N 08013.8E NO FLT IS PERMITTED OVER THE DNG ZONE. 1.DNG ZONE 1 IS A CIRCLE OF 10NM RADIUS AROUND THE LAUNCHER 2.DNG ZONE 2 IS A RECTANGULAR AREA BOUNDED BY: 1150N 08525E 1235N 08535E 1215N 08635E 1130N 08625E 3.DNG ZONE 3 IS A RECTANGULAR AREA BOUNDED BY: 1045N 08915E 1125N 08925E 1110N 09000E 1030N 08950E 4.DNG ZONE 4 IS A RECTANGULAR AREA BOUNDED BY: 0845N 09455E 0935N 09515E 0915N 09610E 0825N 09550E ROUTES AFFECTED IN CHENNAI FIR ARE: L518 N571 P761 N877 W20 A465 P762 P628 Q10 Q11 V003 V004 V006 V009 AND V011. CLOSURE/ALTERNATE ROUTINGS: I) N571 NOT AVBL BTN DORAM AND BIKEN ALTN ROUTE: DORAM-B466-MMV VOR-DCT AVGIR-DCT-BIKEN-N571 (BIDIRECTIONAL) II)P761 NOT AVBL MMV VOR AND PPB VOR ALTN ROUTE: MMV VOR-TR319/139 DEG-DIST 53NM -TTP VOR- TR034/214DEG-DIST 53NM-POINT A (142225N 0800303E) - GURAS DCT- BASOP-PPB VOR (BIDIRECTIONAL) III)N877 NOT AVBL BTN LAGOG AND ORARA ALTN ROUTE: LAGOG- DCT-BASOP-DCT-ORARA (BIDIRECTIONAL) IV) W20 NOT AVBL BTN MMV VOR AND BODEL ALTN ROUTE: MMV VOR-TR319/139DEG- DIST 53NM-TTP VOR-TR357/177DEG-81NM-BODEL (BIDIRECTIONAL) V) A465 NOT AVBL BTN MMV VOR AND DOKET ALTN ROUTE: MMV VOR-TR 319/139 DEG- DIST 53NM-TTP VOR-TR034/214DEG- DIST 53NM-POINT'A'(142225N 0800303E)-TR055/235DEG- DIST 126NM-DOKET-A465(BIDIRECTIONAL) VI) P762 NOT AVBL PPB VOR AND XOKRO ALTN ROUTE PPB VOR-DCT-1009N 09000E-DCT-XOKRO- P762 (BIDIRECTIONAL) VII) P628 NOT AVBL BTN IGREX AND PPB VOR (DUE DNG ZONE-4) ALTN ROUTE: EMRAN-DCT-AGEGA-DCT-PPB VOR (BIDIRECTIONAL) VII) ATS ROUTES L518 Q10 Q11 V003 V004 V009 AND V011 NOT AVBL. GND - UNL) END PART 2 OF 2, BTN 1100-1430, 27 AUG 11:00 2015 UNTIL 24 SEP 14:30 2015. CREATED: 19 AUG 10:16 2015

ЦитироватьИндия успешно запустила пятый коммуникационный спутник GSAT-6

Индия успешно запустила пятый коммуникационный спутник GSAT-6, сообщила в четверг Индийская организация космических исследований.
Пуск был произведен в 16.52 (14.22 мск) с космодрома имени Сатиша Дхавана на острове Шрихарикота в штате Одиша. Спутник выведет на орбиту ракета-носитель GSLV-D6 с криогенным двигателем собственной разработки.

GSAT-6 стал 25-м геостационарным спутником Индии, разработанным и построенным Индийской организацией космических исследований (ISRO). Пять других спутников связи были запущены в 2001, 2003, 2004, 2007 и 2014 годах. После выхода на орбиту GSAT-6 станет частью группы индийских геостационарных спутников, которые уже там функционируют.

Для ракеты-носителя типа GSLV запуск стал девятым. При этом криогенный двигатель индийской разработки будет использован в третий раз. GSLV разработана для вывода на орбиту коммуникационных спутников весом около двух тонн.

ЦитироватьИндия вывела на орбиту коммуникационный спутник GSAT-6

Индия успешно вывела на орбиту коммуникационный спутник GSAT-6, сообщила в четверг Индийская организация космических исследований.

Пуск был произведен в 16.52 (14.22 мск) с космодрома имени Сатиша Дхавана на острове Шрихарикота в штате Одиша. Спутник выведен на орбиту ракетой-носителем GSLV-D6 с криогенным двигателем собственной разработки.

Цитироватьche wi пишет:
Поздравления индусам!

ЦитироватьZOOR пишет:

Так держать с криогеникой- нам теперь догонять

ЦитироватьGSAT-6 стал 25-м геостационарным спутником Индии, разработанным и построенным Индийской организацией космических исследований (ISRO). Пять других спутников связи были запущены в 2001, 2003, 2004, 2007 и 2014 годах. 

Цитировать http://www.isro.gov.in/launcher/gslv-d6
(https://img.novosti-kosmonavtiki.ru/230365.jpg)

Спойлер

GSLV-D6 is the ninth flight of India's Geosynchronous Satellite Launch Vehicle (GSLV). It is also the fifth developmental flight of GSLV. This is the third time the indigenously developed Cryogenic Upper Stage (CUS) is being carried on-board during a GSLV flight. GSLV-D6 flight is significant since it intends to continue the testing of CUS. GSLV is designed to inject 2 ton class of communication satellites into Geosynchronous Transfer Orbit (GTO).

GSLV-D6 was launched from the Second Launch Pad at Satish Dhawan Space Centre SHAR (SDSC SHAR), Sriharikota.

GSLV-D6 launched 2117 kg GSAT-6, an advanced communication satellite, into a GTO. GSAT-6 will provide S-band communication services in the country. After reaching GTO, GSAT-6 will use its own propulsion system to reach its final geostationary orbital home and will be stationed 0 at 83 East longitude.

GSLV-D6 vehicle is configured with all its three stages including the CUS similar to the ones successfully flown during the previous GSLV-D5 mission in January 2014. GSLV-D5 successfully placed GSAT-14 satellite carried on-board in the intended GTO very accurately.

The metallic payload fairing of GSLV-D6 has a diameter of 3.4 m. The overall length of GSLV-D6 is 49.1 m with a lift-off mass of 416 t.

The Cryogenic Upper Stage (CUS) being flown in GSLV-D6 is designated as CUS-06. A Cryogenic rocket stage is more efficient and provides more thrust for every kilogram of propellant it burns compared to solid and earth-storable liquid propellant rocket stages.

The cryogenic stage is technically a very complex system compared to solid or earth-storable liquid propellant stages due to its use of propellants at extremely low temperatures and the associated thermal and structural challenges. Oxygen liquifies at -183 deg C and Hydrogen at -253 deg C. The propellants, at these low temperatures, are to be pumped using turbo pumps running at around 40,000 rpm.

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.

S-band telemetry and C-band transponders enable GSLV-D6 performance monitoring, tracking, range safety/flight safety and Preliminary Orbit Determination (POD).

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Поздравления индусам!

ЦитироватьAccording to Indian Space Research Organisation (ISRO), the S-Band Unfurlable Antenna of six metre diameter was deployed successfully.

The satellite was launched by India's heavy rocket geosynchronous satellite launch vehicle-Mark II (GSLV) and put into geo transfer orbit (GTO) on Thursday.

One of the advanced features of GSAT-6 satellite is this antenna - the largest satellite antenna realized by ISRO and utilized for five spot beams over the Indian mainland, which exploit the frequency reuse scheme to increase frequency spectrum utilization efficiency.

The satellite provides communication through five spot beams in S-band and a national beam in C-band for strategic users. The satellite's life expectancy is nine years.

The ISRO also said the third orbit raising operation of GSAT-6 was successfully completed by firing the satellite's onboard motors for nine minutes.

ЦитироватьISRO ‏@isro  (https://twitter.com/isro) 44m ago (https://twitter.com/isro/status/640459807149789185)

GSAT 6 has been successfully positioned in its orbital slot of 83 Deg E and colocated with INSAT 4A, GSAT 12, GAAT 10 and IRNSS1C today