Author Topic: Soyuz-STB/Fregat-MT VS22 - O3b (4x) - (16:31 UTC) April 4, 2019  (Read 1286 times)

Offline GWR64

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Special delivery: payloads arrive for Arianespace’s fifth Soyuz mission carrying O3b satellites

The latest batch of O3b satellites for launch by Arianespace are unloaded from a chartered IL-76 cargo aircraft at French Guiana’s Félix Eboué Airport. They will be orbited by a medium-lift Soyuz on Flight VS22.

French Guiana has welcomed the four passengers for Arianespace’s second Soyuz mission in 2019, which will further expand the SES-owned O3b satellite constellation delivering low-latency, fiber-like connectivity to customers in more than 40 countries.

This spacecraft quartet – built by Thales Alenia Space – arrived this week aboard a chartered cargo jetliner that landed at Félix Eboué Airport near the capital city of Cayenne, enabling them to be transferred by road to the Spaceport’s preparation facilities.

The O3b fleet of medium-Earth orbit (MEO) satellites is a proven non-geostationary constellation that provides commercial broadband services today, delivering carrier-grade services. The first 16 spacecraft for O3b were successfully orbited by four Soyuz vehicles operating from the Guiana Space Center in 2013, 2014 and 2018. Each satellite weighs about 700 kg. at launch and provides more than 10 Gbps of capacity.
“From 16 to 20” with Arianespace Flight VS22

By increasing the size of the O3b constellation from 16 to 20 satellites, SES Networks will offer enhanced coverage while providing greater service availability and reliability – responding to increasing demand for bandwidth from governments, as well as the telecom, cloud, maritime and energy markets.

This upcoming Soyuz mission is designated Flight VS22 in Arianespace’s launcher family numbering system, signifying the medium-lift workhorse’s 22nd liftoff from the Spaceport since its 2011 introduction at French Guiana.

http://www.arianespace.com/mission-update/vs22-o3b-arrival/
« Last Edit: 03/16/2019 12:42 am by eeergo »

Offline GWR64

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Re: Soyuz-STB/Fregat-MT VS22 - O3b (4x) - March 29, 2019
« Reply #1 on: 02/09/2019 06:00 pm »
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4 latest O3b satellites arrive at launch base

February 7, 2019 – The four latest O3b satellites arrived at the Guiana Space Center in French Guiana on February 2, after being shipped from Thales Alenia Space’s facility in Rome. Built by Thales Alenia Space as prime contractor for SES, these communications satellites will be launched by a Soyuz rocket in March 2019, joining the current constellation of 16 satellites. The O3b system has been operational in orbit since 2014.

With the four latest satellites up and running in medium Earth orbit (MEO), the O3b constellation will offer greater capacity, better coverage and more efficient operation, along with higher reliability. SES Networks, SES’ provider of global managed data services, will call on these high-performance satellites to offer communications services to telecommunications, maritime, aeronautical, and energy markets, as well as governments and institutions across the world.

These Ka-band satellites are positioned at an altitude of 8,000 kilometers along the equator, providing low-latency, fibre-like connectivity.

As prime contractor for a total of 125 satellites in three constellations, Globalstar 2 (24), O3b (20) and Iridium® NEXT (81), Thales Alenia Space is clearly the benchmark partner in the development and deployment of low and medium orbit telecom satellite constellations.



Source https://www.thalesgroup.com/en/worldwide/space/news/4-latest-o3b-satellites-arrive-launch-base
« Last Edit: 03/01/2019 07:38 pm by GWR64 »

Offline zubenelgenubi

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Re: Soyuz-STB/Fregat-MT VS22 - O3b (4x) - March 2019
« Reply #2 on: 02/23/2019 10:37 pm »
Cross-post:
https://ria.ru/20181229/1548885463.html
Google translate:
Quote
“Two launches of the Soyuz-ST carrier rocket with the Fregat upper stage are scheduled for February 19 and March 26. Four or six British OneWeb British communication satellites are planned to be launched into the first launch, and four British O3b communications satellites in the second - Said the source agency.

Some scheduling deduction:

We've been told it takes approximately 2 weeks between successive launches at Kourou.

Given the current schedule:

VS21 launches on February 27 UTC.

VV14 launches on March 15 UTC, 16 days after VS21.

The most recent information has VS22 launching on March 26 UTC (?), only 11 days after VV14.
Assuming all launches happen as currently scheduled, I deduce that this launch will be delayed to NET March 29.
« Last Edit: 02/24/2019 01:40 am by zubenelgenubi »
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Offline smoliarm

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Re: Soyuz-STB/Fregat-MT VS22 - O3b (4x) - March 2019
« Reply #3 on: 02/24/2019 04:45 pm »

...

Some scheduling deduction:

We've been told it takes approximately 2 weeks between successive launches at Kourou.

Given the current schedule:

VS21 launches on February 27 UTC.

VV14 launches on March 15 UTC, 16 days after VS21.

The most recent information has VS22 launching on March 26 UTC (?), only 11 days after VV14.
Assuming all launches happen as currently scheduled, I deduce that this launch will be delayed to NET March 29.

"it takes approximately 2 weeks between successive launches at Kourou"
- 'approximately' is a key word.
Historically, there were cases with 12 days between launches from Kourou. Although 11 would be a record.

Offline PM3

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Re: Soyuz-STB/Fregat-MT VS22 - O3b (4x) - March 2019
« Reply #4 on: 02/27/2019 11:10 am »
Stéphane Israël has confirmed a launch "end March":

https://twitter.com/arianespaceceo/status/1100704979919224834

Offline Steven Pietrobon

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Re: Soyuz-STB/Fregat-MT VS22 - O3b (4x) - March 2019
« Reply #5 on: 02/27/2019 10:43 pm »
From the OneWeb webcast, Stephane Israel announced the launch date as 29 March.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Online Salo

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Re: Soyuz-STB/Fregat-MT VS22 - O3b (4x) - March 29, 2019
« Reply #6 on: 03/13/2019 07:20 am »
https://ria.ru/20190313/1551744517.html
Google translate:
Quote
"The company Arianespace informed the Russian side about the transfer for technical reasons of the launch of the Italian Earth remote sensing satellite PRISMA with the Vega carrier rocket from March 14 to 21. After launching Vega, it will take two weeks for the launch site to launch the Soyuz rocket with the O3b spacecraft," - said the source
In this regard, he noted, the launch of the Soyuz rocket was postponed to 4 April. “The start time is 19:31 Moscow time,” the source added.
April 4 - 16:31 UTC.
« Last Edit: 03/13/2019 01:43 pm by Salo »

Offline zubenelgenubi

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https://ria.ru/20190313/1551744517.html
Google translate:
Quote
"The company Arianespace informed the Russian side about the transfer for technical reasons of the launch of the Italian Earth remote sensing satellite PRISMA with the Vega carrier rocket from March 14 to 21. After launching Vega, it will take two weeks for the launch site to launch the Soyuz rocket with the O3b spacecraft," - said the source
In this regard, he noted, the launch of the Soyuz rocket was postponed to 4 April. “The start time is 19:31 Moscow time,” the source added.
April 4 - 16:31 UTC.

Progress MS-11 is scheduled to launch the same date UTC.  IIRC, a Soyuz launch team needs to support launches at at Baikonur, Vostochniy, or Kourou. (IDK if the same team supports launches from Plesetsk.)

If so, would not one of the two launches need to be off-set from the other by at least a day or two?
« Last Edit: 03/13/2019 10:31 pm by zubenelgenubi »
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Offline PM3

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Progress MS-11 is scheduled to launch the same date UTC.  IIRC, a Soyuz launch team needs to support launches at at Baikonur, Vostochniy, or Kourou. (IDK if the same team supports launches from Plesetsk.)

If so, would not one of the two launches need to be off-set from the other by at least a day or two?

There have been two Soyuz launches on 27 March 2015 within four hours from CSG and Baikour. Since then the global launch frequncy has increased ... so I would expect that they did not cut their resources, but still can handle that.

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