Author Topic: LIVE: VA238 A5 - Inmarsat S EAN/HellasSat 3 & GSAT-17 - June 28, 2017(21:15 UTC)  (Read 67054 times)

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Inmarsat ‏Verified account @InmarsatGlobal 2m2 minutes ago

Health check complete & our #EANsat has been moved to @Arianespace fuelling zone. Getting launch-ready to deliver #inflightwifi over Europe!

https://twitter.com/InmarsatGlobal/status/872777007892975617

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VA238 "launch sticker" of CSG

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Ariane 5   June 9, 2017
GSAT-17 “opens up” during testing ahead of this Indian satellite’s June 28 launch on Arianespace’s next Ariane 5 mission

The next launch of Arianespace’s heavy-lift Ariane 5, scheduled for June 28 from the Spaceport in French Guiana, will carry a dual payload: the Indian Space Research Organisation’s GSAT-17 communications satellite and the Hellas Sat 3 – Inmarsat S EAN multi-mission relay satellite for Inmarsat and Hellas-Sat.

In advance of the liftoff, GSAT-17 has been undergoing ground-based checkout activity, including the deployment of its solar panels and antenna reflectors in the Spaceport’s S5 payload preparation facility’s S5C large clean room hall.

Such deployment testing is a routine procedure with Indian satellites prior to launch. For the solar panels’ extension, an overhead latticework helped support the solar panels as they opened to their full length – simulating the zero gravity conditions in space. Upon validating the proper operation, Indian technicians stowed the panels against the satellite in their final liftoff configuration. Afterwards, the satellite’s two antenna reflectors were similarly deployed and restowed during activity in the clean room.

Launching aboard the upcoming Ariane 5 mission – designated Flight VA238 in Arianespace’s launcher family numbering system – GSAT-17 will be deployed second in the flight sequence, following Ariane 5’s release of Hellas Sat 3 – Inmarsat S EAN. GSAT-17 is based on the I-3K extended spacecraft bus, with a liftoff mass set at 3,425 kg. The satellite’s relay payload is composed of Ku-band, Normal C-band and Extended C-band transponders. The satellite also carries CxS and SxC transponders as well as DRT and SAR transponders.

Arianespace is targeting a total of 12 missions in 2017 utilizing its family of the heavy-lift Ariane 5, medium-lift Soyuz and light-lift Vega. So far this year, the launch services company has performed six flights from the Spaceport, composed of three with Ariane 5, two utilizing Soyuz and one with Vega.

http://www.arianespace.com/mission-update/gsat-17-checkout-va238/

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GSAT-17 undergoes ground-based checkout activity
One of GSAT-17’s two solar panels is extended during checkout activity in the Spaceport’s S5 preparation facility (photo at left). Also undergoing deployment testing were the satellite’s antenna reflectors (photo, right).

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Biggest fuelling job ever? Our #EANsat is now ready to be mated to #Ariane5 🚀. Countdown to #EuropeanAviationNetork #inflightwifi continues!

https://twitter.com/inmarsatglobal/status/874288947622498306

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DutchSpace‏ @DutchSpace 14m14 minutes ago

Launch getting closer... @isro #GSAT17 being integrated on top of #Ariane5 #VA238 launcher inside #BAF at #CSG

https://twitter.com/DutchSpace/status/877497914624544769

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Inmarsat‏ Verified account @InmarsatGlobal 2m2 minutes ago

Excited to confirm our #EANsat 🛰️will launch w/ @Arianespace on an #Ariane5 🚀on 28 June at 21:59 BST! Find out more: https://www.inmarsat.com/inmarsat-s

https://twitter.com/InmarsatGlobal/status/877526879212883968

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http://www.arianespace.com/press-release/arianespace-to-launch-on-june-28-hellas-sat-3-inmarsat-s-ean-for-inmarsat-and-hellas-sat-and-gsat-17-for-the-indian-space-agency-isro/

Arianespace to launch on June 28 Hellas Sat 3-Inmarsat S EAN for Inmarsat and Hellas Sat; and GSAT-17 for the Indian Space Agency ISRO

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Press Kit attached. Total payload is 10,177 kg. Hellas-Sat 3 is 5,780 kg and GSAT 17 is 3,477 kg.
« Last Edit: 06/22/2017 09:56 am by Steven Pietrobon »
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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Inmarsat ‏Verified account @InmarsatGlobal 25s25 seconds ago

And it’s goodbye #EANsat! Our spacecraft is safely in the #Ariane5 🚀& ready for launch on 28 June. Watch live here: https://www.inmarsat.com/inmarsat-s

https://twitter.com/InmarsatGlobal/status/877827426906230784

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Jacques :-)

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Momentum is building for #VA238! Today’s successful launch readiness review clears the way for #Ariane5 rollout tomorrow, liftoff on June 28

https://twitter.com/arianespaceceo/status/879389759143129089

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June 26, 2017 

Ariane 5 is cleared for its June 28 launch with Hellas Sat 3-Inmarsat S EAN and GSAT-17

Arianespace’s fourth heavy-lift Ariane 5 to take flight in 2017 is “go” for its Wednesday evening liftoff from the Spaceport in French Guiana, sustaining the launch services company’s mission cadence this year with its full launcher family – which also includes the medium-lift Soyuz and lightweight Vega.

Approval for the June 28 mission – designated Flight VA238 in Arianespace’s launcher family numbering system – was granted today after the Launch Readiness Review, which confirmed the “go” status of Ariane 5, its Hellas Sat 3-Inmarsat S EAN and GSAT-17 satellite payloads, the Spaceport’s infrastructure and the network of downrange tracking stations.

The total payload carried on Flight VA238 is approximately 10,177 kg., with the mission lasting 39 minutes from liftoff to deployment of the two spacecraft passengers.

One launch at the service of three operators

Hellas Sat 3-Inmarsat S EAN is positioned as the upper passenger on Ariane 5, and will be released first during the flight, followed by GSAT-17’s deployment from the launcher’s lower payload position.

Hellas Sat 3-Inmarsat S EAN is a two-payload “condosat” produced by Thales Alenia Space for Hellas Sat and Inmarsat. Once in orbit, the Hellas Sat 3 component will deliver direct-to-home and telecom services to maintain and expand Hellas Sat’s business reach; while the Inmarsat S EAN component provides the satellite portion of Inmarsat’s new European Aviation Network.

Built using the Thales Alenia Space Spacebus 4000C4 platform, Hellas Sat 3-Inmarsat S EAN has a liftoff mass of 5,780 kg.

GSAT-17 was manufactured by the Indian Space Research Organization (ISRO) to expand this national space agency’s current fleet of 17 telecommunications satellites. It will provide continuity of Fixed Satellite Services (FSS) in Normal C and Upper Extended C bands, as well as Mobile Satellite Services (MSS) in S-band and Data Relay and Search & Rescue services in UHF band.

The GSAT-17 spacecraft was built by ISRO/ISAC (the ISRO Satellite Centre), utilizing the Standard I-3K satellite bus. Its liftoff mass is set at 3,477 kg.

http://www.arianespace.com/mission-update/va238-launch-readiness-review/
« Last Edit: 06/27/2017 12:47 pm by jacqmans »
Jacques :-)

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« Last Edit: 06/27/2017 06:01 pm by FutureSpaceTourist »

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All is going according to plan: #Ariane5 has reached the launch zone for tomorrow’s #VA238 launch for @HellasSat @InmarsatGlobal & @isro

https://twitter.com/arianespaceceo/status/879802098682130435

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Ariane 5   June 27, 2017
Ariane 5 reaches the launch zone for Arianespace’s June 28 liftoff

Arianespace has delivered another Ariane 5 to the launch zone at Europe’s Spaceport in French Guiana, clearing the way for tomorrow's heavy-lift mission with a pair of satellites: Hellas Sat 3-Inmarsat S EAN and GSAT-17.

Riding atop a mobile launch table, Ariane 5 today completed its transfer from the Spaceport’s Final Assembly Building – where payload integration occurred – to the dedicated ELA-3 launch complex. With this rollout completed, the final countdown will begin for a June 28 liftoff at the start of a 1-hr., 17-min. launch window opening at 5:59 p.m. local time in French Guiana.

Tomorrow’s mission is designated Flight VA238, and it has an estimated payload performance of 10,177 kg. – a total that factors in Hellas Sat 3-Inmarsat S EAN and GSAT-17, plus the dual-satellite dispenser system and integration hardware. Both passengers are to be deployed to geostationary transfer orbit during a 39-min. flight sequence.

Continuing the Arianespace launch tempo

Hellas Sat 3-Inmarsat S EAN is the mission’s upper passenger and will be released first in the flight sequence at 28 min. after liftoff. Produced by Thales Alenia Space, it is a two-payload “condosat” to be operated by Hellas Sat and Inmarsat. Once in orbit, the Hellas Sat 3 component will deliver direct-to-home and telecom services to maintain and expand Hellas Sat’s business reach; while the Inmarsat S EAN component provides the satellite portion of Inmarsat’s new European Aviation Network.

GSAT-17, to be deployed from Ariane 5’s lower passenger position, was built by the Indian Space Research Organisation (ISRO) to strengthen its current fleet of 17 telecommunications satellites. The spacecraft’s separation will occur approximately 41 min. after liftoff.

As the fourth heavy-lift Ariane 5 flight so far in 2017, tomorrow’s launch will continue a busy year of mission activity for Arianespace’s full family of launchers, which also has included two flights performed with the medium-lift Soyuz and one using the lightweight Vega.

http://www.arianespace.com/mission-update/va238-launch-vehicle-rollout/

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The Ariane 5 for Arianespace Flight VA238 moves into position at the ELA-3 launch zone.

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