ViaSat-2, Eutelsat 172B - Ariane 5 ECA (VA237) - Куру ELA3 - 01.06.2017, 23:45 UTC

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ViaSat Inc.‏ @ViaSatInc 8 нояб.

ViaSat-2 update: gaining control of satellite by end of Dec '17, set to scale consumer service in Feb '18 $VSAT #broadbandforall

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Caleb Henry‏ @CHenry_SN 51 мин назад

Eutelsat-172b entered service today after 4-month electric orbit raising, replacing Eutelsat-172A. After transferring customers, Eutelsat moving the 172A satellite to "an alternative orbital position" also over the Asia-Pacific.


Eutelsat‏ @Eutelsat_SA 15 мин. назад

It's here! EUTELSAT 172B satellite open for business in Asia-Pacific http://ow.ly/Rro930gIE3D

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http://news.eutelsat.com/pressreleases/eutelsat-all-electric-eutelsat-172b-satellite-set-to-transform-connectivity-landscape-in-asia-pacific-2289423

Eutelsat all-electric EUTELSAT 172B satellite set to transform connectivity landscape in Asia-Pacific
Press Release   •   Nov 21, 2017 13:49 CET


Photo credit : Airbus Defence and Space

New satellite goes live at 172° East, delivering enhanced capacity and new HTS payload for in-flight connectivity

Paris, 21 November 2017 – Eutelsat Communications' (Euronext Paris: ETL) all-electric EUTELSAT 172B satellite that went into full commercial service this morning is now offering greatly enhanced flexibility, power and connectivity for users in a vast region stretching from the West coast of the Americas to Asia, Oceania and across the Pacific.

The transfer of services to EUTELSAT 172B from EUTELSAT 172A was completed seamlessly in a series of overnight manoeuvres, releasing EUTELSAT 172A for an alternative orbital position to serve customers in the Asia-Pacific region.

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Launched in June this year, EUTELSAT 172B sets a new benchmark as the fastest satellite to reach geostationary orbit using electric propulsion (in only four months) and the first optimised for in-flight connectivity across the Pacific. Its innovative High Throughput payload, consisting of 11 spotbeams, will transform efficiency by enabling power to be dynamically allocated as aircraft fly high traffic routes in the Asia Pacific region. This step change will allow Panasonic, the major client of the HTS payload, to better meet passenger demand and cost-effectively ensure consistently high levels of service to airlines.

In addition to the HTS payload, EUTELSAT 172B significantly increases regular bandwidth at the 172° East position, with C-band capacity as well as flexible Ku-band capacity spread across five interconnecting Widebeam service areas. Beyond maritime, video, enterprise, cellular backhaul and government services, the Ku-band capacity will serve as an overlay to economically deliver live television to passengers in flight.

Rodolphe Belmer, Eutelsat CEO, said: "As EUTELSAT 172B begins commercial activity that will stretch into the 2030s, this is a key moment to thank the men and women at Eutelsat and our colleagues at Airbus for collaborating passionately on a programme that sets a new industry standard. In addition to taking our 172° East location to a new level of performance for clients in the Asia-Pacific, EUTELSAT 172B further validates the value of electric propulsion for high-capacity satellites that are core to providing cost-competitive services in the telecoms marketplace."

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http://investors.viasat.com/releasedetail.cfm?ReleaseID=1050708

Dec 5, 2017

ViaSat-2 Satellite Reaches Geostationary Orbit; Successfully Receives and Transmits First Data fr om Space

CARLSBAD, Calif., Dec. 5, 2017 /PRNewswire/ -- Viasat Inc. (NASDAQ: VSAT), a global communications company, announced today the ViaSat-2 satellite has successfully arrived in geostationary orbit at 69.9° west longitude, and has transitioned into orbit normal mode (earth pointing) with its reflector and radiator deployments now complete. The Company also confirmed the ViaSat-2 satellite has commenced in-orbit testing, including the key milestone of the first end-to-end system test, with the ViaSat-2 satellite transmitting and receiving data to and from the new Viasat ground segment.

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ViaSat-2 was launched by Arianespace from Kourou, French Guiana, on June 1, 2017. The ViaSat-2 satellite employed a hybrid propulsion approach, using both traditional chemical as well as electric propulsion. The chemical propulsion subsystem was responsible for initial orbit raising and performed according to plan, setting the stage for the follow-on ascent to geostationary orbit using electric propulsion, which was completed last week. Viasat spacecraft partner, Boeing Satellite Systems International, controlled and monitored ViaSat-2 throughout the orbit raising process, flying the satellite from its Mission Control Center in El Segundo, California.

Following completion of the in-orbit tests, the ViaSat-2 satellite is scheduled to enter commercial service in February 2018, wh ere it will enable the delivery of advanced residential, enterprise, government and in-flight internet services.

Successful Data Transmission from Space
Within days of reaching its geostationary orbit, the Viasat team was successfully transmitting data to and from the ViaSat-2 satellite, as well as streaming content providing an early demonstration of the satellite's power and flexibility. Watch the first few moments of contact .

"This is a great achievement for the Viasat team, our customers and our partners," said Mark Dankberg, chairman and CEO, Viasat. "The ViaSat-2 system is the culmination of years of hard work and commitment to bringing a satellite platform to market that can deliver truly high-speed, high-quality broadband to many more people, and with a much greater geographic reach. We're another step closer to bringing the ViaSat-2 satellite into service."

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https://www.viasat.com/news/viasat-affirms-commercial-service-launch-february-2018-provides-updates-orbit-testing

Viasat Affirms Commercial Service Launch for February 2018; Provides Updates on In-Orbit Testing

CARLSBAD, Calif., Jan. 9, 2018 /PRNewswire/ -- Viasat Inc. (NASDAQ: VSAT), a global communications company, announced today it has begun beta service on the ViaSat-2 satellite, and affirmed plans for full commercial service launch in February 2018. The ViaSat-2 satellite system is expected to significantly improve speeds, reduce costs and expand the footprint of broadband services across North America, Central America, the Caribbean, a portion of northern
South America, as well as the primary aeronautical and maritime routes across the Atlantic Ocean between North America and Europe.

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To-date, Viasat has successfully completed a number of key performance tests on the ViaSat-2 satellite and end-to-end network, including demonstrating downstream speeds of over 100 Mbps to production consumer terminals. The satellite ground network and other networking technologies are performing better than initially planned as measured in successful alpha testing. The satellite will continue to undergo testing during the beta service period, as Boeing has identified an in-orbit antenna issue, which has caused some spot beams to perform differently than they did during ground testing. Boeing, with Viasat's support, is working to determine the root cause of the issue and to identify corrective measures. Based on measured
data and analysis of the current in-orbit performance of the satellite as well as the network as a whole, Viasat believes the issue will not impact the coverage area of the satellite, or materially impact the planned services and the expected financial results from the ViaSat-2 system.

Mark Dankberg, chairman and CEO, Viasat said, "Our advanced ground network, coupled with the flexibility features of the ViaSat-2 satellite, will help us manage the impact from the identified antenna issue if needed. We look forward to launching commercial service next month and bringing new higher-speed fixed and mobile services to market."

The Company will provide an update on the status of the ViaSat-2 service launch plans and ViaSat-1 based market testing of these plans at the next regularly scheduled earnings conference call, planned for early February 2018.
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[Новый]

Хьюстон, кажись, у нас большие проблемы:

Boeing investigating antenna glitch on ViaSat-2 satellite.
http://spacenews.com/boeing-investigating-antenna-glitch-on-viasat-2-satellite/

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Peter B. de Selding‏ @pbdes 23h ago

ViaSat-2 service to start next week, @ViasatInc CEO Dankberg says. Full-US commercial availability by end of this month, including unlimited plans.

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Peter B. de Selding‏ @pbdes 23h ago

Dankberg said @ViasatInc and @BoeingDefense still studying ViaSat-2 antenna deployment issue; unclear, but could limit downlink to ~ 260 gbps.

22h ago

On ViaSat-2 antenna deployment problem, @ViasatInc apparently considering reversing antenna deployment, then redeploying in hope of fixing problem. Debate is over likelihood of making it worse; talking w/ @BoeingDefense , insurers about this.

22h ago

Dankberg: We didnt base our business plans on ViaSat-2 perfection w/ @ViasatInc ViaSat-2; and some ground aspects working better than planned, so we think we can make our original plans despite antenna impairment. Insurers have been notified of issue.

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http://spacenews.com/viasat-says-viasat-2-business-plan-intact-despite-antenna-glitch/

Viasat says ViaSat-2 business plan intact despite antenna glitch
by Caleb Henry — February 15, 2018


"We didn't base our business plans on perfection. We had margins in there for problems," Mark Dankberg, ViaSat's chairman and CEO, said of ViaSat-2 after discovering a performance-inhibiting antenna problem.

WASHINGTON — Fleet operator Viasat's newest satellite could lose around 15 percent of its intended throughput due to an antenna problem discovered after launch.

Mark Dankberg, Viasat's Chairman and CEO, told investors Feb. 8 that the 6,400-kilogram ViaSat-2 satellite launched in June on an Ariane 5 rocket will likely have a maximum capacity of 260 gigabits per second, rather than 300 Gbps or more as initially hoped.

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Viasat and satellite manufacturer Boeing are continuing to work on solutions to the antenna problem, Dankberg said, but cannot conclude whether any prospective fixes will help or hinder the satellite's performance. Insurers are involved to determine the impact, which could entitle Viasat to a partial-loss claim, he said.

Dankberg said ViaSat-2 will still be a very capable satellite regardless of whether the handicap can be fixed. Other parts of the ViaSat-2 system, like its ground network, are performing better than expected, he said, mitigating the impact of the antenna malfunction.

"We didn't base our business plans on perfection," he said. "We had margins in there for problems."

ViaSat-2 is readying for service now and will be nationwide over the United States by the end of February, he said. Once fully active, the satellite will cover most of North America, along with the Caribbean and a swath of the North Atlantic Ocean out to the United Kingdom.
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Viasat Inc.‏ @ViasatInc 4 ч. назад

BREAKING: Viasat Announces Highest-Speed, Unlimited Satellite Internet Service—Nationwide http://bit.ly/2t0Cgna  #AccessAmplified #ViasatInc

http://bit.ly/2t0Cgna --> http://investors.viasat.com/releasedetail.cfm?ReleaseID=1058823&sf84952497=1

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Eutelsat‏ @Eutelsat_SA сейчас10 секунд назад


Enabling a flexible power management across APAC air routes, Multi-Port Amplifier is at the core of EUTELSAT 172B's innovative design. @PanasonicAero and UnicomAirNet endorsed it by selecting this 's HTS capacity to deliver #IFEC services in the region