Cartosat-2E + 30 микроспутников – PSLV-C38 – Шрихарикота – 23.06.2017 03:59 UTC

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Трансляция пуска - Doordarshan National

The Launch of PSLV - C38 / CARTOSAT-2 Series Satellite- Live

DoordarshanNational

Запланировано на 23 июн. 2017 г.

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http://isro.gov.in/update/22-jun-2017/mobile-service-tower-mst-withdrawal-to-parking-end-completed-preparations

Jun 22, 2017

Mobile Service Tower (MST) withdrawal to parking end is completed. Preparations for propellant filling operation of Second Stage (PS2) are in progress

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http://isro.gov.in/update/22-jun-2017/propellant-filling-operations-of-second-stage-ps2-are-progress

Jun 22, 2017

Propellant filling operations of Second Stage (PS2) are in progress

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http://www.thehindu.com/sci-tech/isro-plans-complex-manoeuvres/article19127342.ece

ISRO plans complex manoeuvres

T. Nandakumar

Thiruvananthapuram, June 22, 2017 21:34 IST  Updated: June 22, 2017 21:36 IST

Engines in the fourth stage will be reignited three times

The countdown for the PSLV-C38 mission began on Thursday morning, engineers at ISRO were preparing to execute a series of complex manoeuvres for the shutdown and reignition of the rocket engines in space.

The engines in the fourth stage will be reignited three times, in a bid to master the technique that will enable ISRO to inject satellites into different orbits in a single launch. "It will be a validation of the technique that was tested in the PSLV-C34 mission and deployed in the subsequent C35 mission", says B. Jayakumar, PSLV project director. The exercise will be conducted after all 31 satellites on PSLV-C38 have been injected into orbit.

"Once the last satellite has been separated from the rocket at a height of 520 km, the fourth stage of the rocket (PS4) comprising two liquid propellant engines will be shut down and reignited three times," Mr. Jayakumar told The Hindu. While the first two firings are expected to last about six seconds each, the third restart is likely to fire up to 40 seconds.

The multiple reignition of the on board engines will validate the technique and provide ISRO with the mission flexibility to inject satellites into three different orbits in a single flight to reduce the launch cost and save time.

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http://isro.gov.in/update/23-jun-2017/propellant-filling-operations-of-second-stage-ps2-are-completed-countdown

Jun 23, 2017

Propellant filling operations of Second Stage (PS2) are completed. Countdown is progressing normally.

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06/23/2017 04:53
ISRO reports the Polar Satellite Launch Vehicle is fully fueled for today's launch. The final step was loading of more than 92,000 pounds (42 metric tons) of hydrazine and nitrogen tetroxide into the PSLV's second stage.

Technicians filled the PSLV's fourth stage with its storable liquid propellant earlier in the 28-hour countdown sequence. The first and third stages of the rocket are fueled by pre-packed solid propellants.

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О трансляции ISRO

http://isro.gov.in/pslv-c38-cartosat-2-series-satellite/pslv-c38-cartosat-2-series-mission-live-details

или

http://cdn.24fd.com/events/isro/230617/pslvc38/index.html

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06/23/2017 05:59
T-minus 60 minutes. There are no problems reported in the countdown, and launch remains on track for 0359 GMT (11:59 p.m. EDT).
Some statistics on today's flight

[/li]
• 40th PSLV mission
• 17th launch in PSLV XL configuration
• 4th Indian launch of 2017
• 2nd PSLV flight of 2017
  

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Трансляция началась
 

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Chris B - NSF‏ @NASASpaceflight 2 мин. назад

Only three launches scheduled for today. Sorry about that, rocket fans.

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06/23/2017 06:42
Weather conditions are ideal for a launch at the Satish Dhawan Space Center, a spaceport on Sriharikota Island on India'a east coast approximately 50 miles north of Chennai.

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Spaceflight101 LIVE‏ @S101_Live 37 сек. назад

L-16 Minutes: Final Status Checks are in progress before authorization for the automated countdown is given. #PSLV

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06/23/2017 06:44
The launch authorization board has given the green light for the final terminal countdown sequence.

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06/23/2017 06:46
The vehicle director has authorized the start of the final automated launch sequence.

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Spaceflight101 LIVE‏ @S101_Live 1 мин. назад

L-13 Minutes: One Minute to the start of the Terminal Countdown Sequence to prepare #PSLV for liftoff.

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Spaceflight101 LIVE‏ @S101_Live 1 мин. назад

T-12 Minutes: Automated Countdown Sequence - #PSLV is starting the final crucial countdown events. http://spaceflight101.com/pslv-c38/live-coverage/ ...