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GSLV-D6 / GSAT-6 Mission - INSAT-4E Strategic S-Band Advanced Military Communication Satellite

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A view of GSAT-6 Satellite structure

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Unfurlable Antenna of GSAT-6 in stowed mode

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Unfurlable Antenna of GSAT-6 in deployed mode

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GSAT-6 Satellite being loaded into Thermal Vacuum Chamber for environmental testing

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GSAT-6 satellite being prepared for various tests at clean room

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Solar panel deployment test under progress

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GSAT-6 seen with two halves of payload faring of GSLV-D6

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Payload faring of GSLV-D6 being inegrated at VAB

Source:- GSLV-D6 / GSAT-6 Gallery - ISRO

ISRO makes the country proud
 
Nice Pakistan needs to catch up soon and we would do it once budget is provided. India is doing good when it comes to satellite

Catch up soon, you know that pakistan still could not able to develop its own satellite nor fund let alone SLV's and other platform.Rocket science required decades of experience and skills and SUPARCO plan is to lauch staellite from its own soil in 2040 only and that's 25 years from now.It's not like some form of missiles that pakistan possess.
 
10a-view-of-gsat-6-satellite-structure.jpg

A view of GSAT-6 Satellite structure

11unfurlable-antenna-of-gsat-6-stowed-mode.jpg

Unfurlable Antenna of GSAT-6 in stowed mode

12unfurlable-antenna-of-gsat-6-deployed-mode.jpg

Unfurlable Antenna of GSAT-6 in deployed mode

13gsat-6-satellite-being-loaded-thermal-vacuum-chamber-environmental-testing.jpg

GSAT-6 Satellite being loaded into Thermal Vacuum Chamber for environmental testing

14gsat-6-satellite-being-prepared-various-tests-clean-room.jpg

GSAT-6 satellite being prepared for various tests at clean room

15solar-panel-deployment-test-under-progress.jpg

Solar panel deployment test under progress

16gsat-6-seen-with-two-halves-of-payload-faring-of-gslv-d6.jpg

GSAT-6 seen with two halves of payload faring of GSLV-D6

17encapsulated-assembly-of-payload-fairing-with-gsat-6-being-inegrated-vab.jpg

Payload faring of GSLV-D6 being inegrated at VAB

Source:- GSLV-D6 / GSAT-6 Gallery - ISRO


@Chanakya's_Chant
These are awesome pics, Thx for sharing.
 
And then some chini trolls will come and say India doesn't even make safetypins. :P
 
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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 will be launched from the Second Launch Pad at Satish Dhawan Space Centre SHAR (SDSC SHAR), Sriharikota.

GSLV-D6 will launch 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).
 
All eyes on India's cryo engine as GSLV readies for lift-off on Thursday

CHENNAI: All eyes at the Sriharikota spaceport will be on the indigenous cryogenic engine which forms the third and upper stage of the GSLV-D6 rocket that will lift off at 4.52pm on Thursday with GSAT-6, a 2,117kg communication satellite.

This will be the ninth flight of the Geostationary Satellite Launch Vehicle and the third development flight using a cryogenic engine. The success-failure score of the development flights has been 1-1.

Indian Space Research Organisation (Isro) had used up six of the seven cryogenic engines it got decades ago, and now have to master the technology for future launches of heavy satellites. Isro is building a more powerful cryogenic engine to be used in its GSLV-MIII vehicle to carry four-tonne satellites. This is also the designated carrier for Isro's proposed manned missions.

After the mission readiness review committee and the launch authorization board cleared the launch, the 29-hour countdown for the launch started at 11.52am on Wednesday.

GSLV-D6 vehicle was configured with all its three stages including the CUS similar to the ones successfully flown during the previous GSLV-D5 mission in January 2014, an Isro statement said. GSLV-D5 had 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 liquefies at -183 degree Celsius and Hydrogen at -253 degree Celsius. 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).

Source:- All eyes on India's cryo engine as GSLV readies for lift-off on Thursday - The Times of India

Countdown begins for launch of Indian military satellite
Posted on August 26, 2015 by Stephen Clark


India’s Geosynchronous Satellite Launch Vehicle rolls out to the Second Launch Pad at its launch base on Sriharikota Island on India’s east coast. Credit: ISRO

A government-owned communications satellite heading for geostationary orbit 22,300 miles above Earth is set for launch Thursday to on a nine-year mission to to support the Indian military.

The 4,667-pound GSAT 6 spacecraft will lift off aboard India’s Geosynchronous Satellite Launch Vehicle at 1122 GMT (7:22 a.m. EDT) Thursday from the Satish Dhawan Space Center, a spaceport situated about 50 miles north of Chennai on India’s east coast.

Shrouded inside the GSLV’s metallic nose fairing, the satellite is India’s 25th geostationary communications satellite and has a mission to serve “strategic users,” according to the Indian Space Research Organization. Indian news reports said the prime customer for the new signal relay craft is the Indian military.

ISRO officials said the 29-hour countdown began Wednesday, and launch crews planned to fill the rocket’s four liquid-fueled boosters and second stage with storable hydrazine and nitrogen tetroxide propellants later in the day. Fueling of the GSLV’s third stage with cryogenic liquid hydrogen and liquid oxygen will come in the final hours of the countdown.

The first stage’s solid propellant load was packed inside the motor when it was assembled.

Launch is scheduled for 4:52 p.m. local time Thursday at the Indian launch base, and 161-foot-tall GSLV will fire away on the power of four hydrazine-burning strap-on Vikas booster engines and a solid-fueled core motor. At peak power, the first stage and the boosters will generate more than 1.7 million pounds of thrust.

The four liquid-fueled boosters will ignite at T-minus 4.8 seconds and ramp up to full thrust before the solid first stage fires when the countdown clock reaches zero.

The core motor will consume its propellant load by T+plus 1 minute, 46 seconds, followed by shutdown of the four Vikas booster engines at T+plus 2 minutes, 29 seconds. A single second stage Vikas powerplant will take over and burn until just shy of the mission’s five-minute point, during which time the GSLV’s payload fairing will release once the rocket is out of the dense lower atmosphere — a milestone projected at T+plus 3 minutes, 50 seconds.

A cryogenic upper stage engine will ignite at T+plus 4 minutes, 54 seconds, for a nearly 12-minute firing to propel the GSAT 6 satellite into an oval-shaped geostationary transfer orbit. Spacecraft separation is schedule for T+plus 17 minutes, 4 seconds, according to ISRO.


India’s GSAT 6 communications satellite is pictured before encapsulation inside the GSLV’s payload fairing. Credit: ISRO

The launch is targeting an orbit with a high point of 22,353 miles (35,975 kilometers), a low point of 105 miles (170 kilometers) and an inclination of 19.95 degrees.

Thursday’s launch marks the third time the Indian-built cryogenic engine, which burns a super-cold mixture of liquid hydrogen and liquid oxygen, has flown on the GSLV. Earlier GSLV flights, dating back to the rocket’s maiden mission in 2001, employed a Russian-made cryogenic third stage.

The all-Indian version of the GSLV, called the GSLV Mk.2, failed on its first launch in April 2010 due to a failure in the upper stage engine’s liquid hydrogen turbopump. The second test launch of the GSLV Mk.2 in January 2014 was successful.

The launch of GSAT 6 is the ninth flight of the GSLV in both its all-Indian and part-Russian configurations. ISRO considers four of the eight launches to date as successful.

Thursday’s launch, designated GSLV-D6 by ISRO, is India’s third space mission of the year after two flawless flights of the smaller Polar Satellite Launch Vehicle.

GSAT 6 will fire its on-board propulsion system to circularize its orbit 22,300 miles above the equator, where it will park itself at 83 degrees east longitude and unfurl a nearly 20-foot (6-meter) S-band antenna, the largest reflector of its kind ever flown on an Indian communications satellite.

The spacecraft carries S-band and C-band communications payloads with five spot beams and one nationwide beam.

Countdown begins for launch of Indian military satellite | Spaceflight Now

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Soon regular GSLV with full indian cryo will be as run of the mill as PSLV launch. Cant wait for future iterations of the mk III to get some real heavy launch capability.

Looking forward to "lift off Naarmal/paarfaarmance naarmal" later 8-)
 

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