Author Topic: Soyuz-STB/Fregat-M (VS21) - OneWeb (x6) - (21:37 UTC) February 26, 2019  (Read 5331 times)

Offline zubenelgenubi

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This is the launch thread for the "OneWeb Pilot" launch of the first satellites of the OneWeb constellation.

A great thread about the news of and discussion about the OneWeb constellation is here:
OneWeb constellation (+900 sats) to be built by Airbus

SFN Launch Schedule, updated January 9, lists the launch time on February 19 as:
Approximately 21:30 UTC = 6:30 p.m. GFT (local time)
***

https://twitter.com/pbdes/status/1082926446945988608
<snip>

Which is the correct number of OneWeb satellites on this launch: 1, 4, 6, or 10?  I've read of all these possibilities, in separate sources, in recent months.
« Last Edit: 02/12/2019 10:59 pm by gongora »
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Offline zubenelgenubi

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OneWeb Pilot launch on February 19, at 21:37 UTC.
https://www.urdupoint.com/en/technology/russia-to-carry-out-countrys-1st-space-launc-529112.html

(I checked the Sputnik International web site and found no corresponding article.)

Thanks, Salo!
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Offline PM3

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Which is the correct number of OneWeb satellites on this launch: 1, 4, 6, or 10?  I've read of all these possibilities, in separate sources, in recent months.

The number 1 may originate from an Anatoly Zak typo: "... launch a OneWeb Pilot Internet communications satellite  ...", but then only plural "satellites" in the following sentences, and no indication that the number shrunk when relocating to CSG. There is not much sense in launching just one Satellite as the pilot of a constellation.

The number 10 is rather old, e.g. Spaceflight Now published it in August 2018.

Sputnik news wrote "from four to six" just three weeks ago. It's also more likely that there is a delay in satellite production than a speedup. So my bet is on 4-6.

Offline anik

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Six satellites and four mockups.

Offline PM3

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Six satellites and four mockups.

Your guess, or is there a source?

Offline anik

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Offline PM3

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Offline zubenelgenubi

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Will the four mock-ups remained attached to the payload dispenser, or will they be released like the "real" satellites?
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Offline Sam Ho

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Will the four mock-ups remained attached to the payload dispenser, or will they be released like the "real" satellites?
Good orbital debris mitigation practice says you don't deploy them.

Offline russianhalo117

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Provide they are on the lower dispenser and spread equally then they can function as ballast.

Offline Steven Pietrobon

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Your guess, or is there a source?
https://ria.ru/20190116/1549426711.html

The relevant paragraph (Bing translation). The first Russian launch is 4th quarter 2919.

 "The first six OneWeb communication satellites will be delivered to the Kourou Cosmodrome on January 22 to launch the Soyuz-STB missile with the "Fregat-M" booster, which is planned for February 20 ", the interlocutor of the agency said. According to him, it was originally planned to launch 10 OneWeb satellites on the rocket Soyuz, but later the British company decided to reduce this number to six. The source noted that the missing four devices will replace the layouts. "In principle, it is enough to run only four satellites to check the correctness of technical solutions," he explained. Earlier, the company Arianespace reported that launches of the British communications satellites OneWeb "Soyuz" from the Cosmodrome Baikonur will begin in the fourth quarter of the 2019 year."
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline GWR64

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https://twitter.com/greg_wyler/status/1087766477275627520

Quote
Greg Wyler
‏ @greg_wyler

The first batch of satellites left the factory last night, and arrived this morning in French Guiana. Soon to be integrated on the dispenser.

and these are the six chosen, four stay at home, as a reserve

https://twitter.com/greg_wyler/status/1087474937315635201

https://twitter.com/greg_wyler/status/1086284451087351809
« Last Edit: 01/22/2019 08:28 pm by GWR64 »

Offline GWR64

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Your guess, or is there a source?
https://ria.ru/20190116/1549426711.html

The relevant paragraph (Bing translation). The first Russian launch is 4th quarter 2919.

 "The first six OneWeb communication satellites will be delivered to the Kourou Cosmodrome on January 22 to launch the Soyuz-STB missile with the "Fregat-M" booster, which is planned for February 20 ", the interlocutor of the agency said. ...

Fregat-M, that was to suspect, for LEO makes the Fregat-MT probably little sense

Offline Lewis007

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Stephane Israël tweet about sat arrival in French Gyuana

https://twitter.com/arianespaceceo/status/1088824405982134273

Offline Salo

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https://ria.ru/20190130/1550103248.html
Google translate:
Quote
The seam rupture of the helium supply pipeline to the fuel tanks of the Fregat upper stage, which is to put the first test satellites of the British OneWeb system into orbit, was detected during the pre-launch preparation at the Kourou space center (French Guiana), several sources in the rocket and space industry told RIA Novosti.

Offline Rocket Rancher

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"In God We Trust ... All Others Bring Data"

Offline Steven Pietrobon

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Looks like that dispenser can carry up to 32 satellites. There are four rows, with each row having eight satellites. Looks like two dummy satellites or mass simulators are attached on the bottom row.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline Salo

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https://ria.ru/20190130/1550103248.html
Google translate:
Quote
The seam rupture of the helium supply pipeline to the fuel tanks of the Fregat upper stage, which is to put the first test satellites of the British OneWeb system into orbit, was detected during the pre-launch preparation at the Kourou space center (French Guiana), several sources in the rocket and space industry told RIA Novosti.
https://ria.ru/20190130/1550117048.html
Google translate:
Quote
MOSCOW, Jan. 30 - RIA News. Preparations for the launch of OneWeb satellites from the Kourou cosmodrome are proceeding normally, and the detected deviations are eliminated before the launch, the press service of Roscosmos told RIA Novosti.

Offline SciNews

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TASS: Russia continues work to launch rocket with OneWeb satellites from Kourou
Quote
The preparations for the launch of a Soyuz carrier rocket from the Kourou spaceport in French Guiana to deliver OneWeb satellites into orbit are proceeding in a normal regime, Russia’s State Space Corporation Roscosmos told TASS on Wednesday.
"Nothing has happened and the preparations are proceeding in a normal regime in accordance with the stipulated procedure," the Roscosmos press office said, responding to a question about a fault found in the Fregat booster.
As Roscosmos explained, "checks always reveal something and this is why multi-stage inspections are needed."
http://tass.com/science/1042407
« Last Edit: 01/30/2019 01:55 pm by SciNews »

Offline Satori

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Do we have the launcher serial numbers?

Offline Salo

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Offline Salo

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Offline Salo

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https://ria.ru/20190131/1550197297.html
Google translate:
Quote
MOSCOW, January 31 - RIA News. Troubleshooting the Fregat upper stage, which is intended to launch British OneWeb communication satellites with the Soyuz launch vehicle from the Kourou cosmodrome, will take a week, so the start is shifted from February 20 to February 27, a source in the space rocket told RIA Novosti.

Offline Salo

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https://tass.ru/kosmos/6065095
Google translate:
Quote
MOSCOW, January 31. / TASS /. Specialists at the Kourou (French Guiana) cosmodrome eliminated a pinhole in the Fregat upper stage, which is necessary for launching OneWeb satellites into orbit. This was reported TASS source in the rocket and space industry.

"There was a hole in the highway with helium, during inspections pressure began to fall. The specialists at the Kourou cosmodrome cost the standard materials and have already eliminated the hole, and used a simple repair kit. Transportation of the Frigate to Russia will not be necessary," said the agency interlocutor.

According to him, the commission to prepare for the launch of OneWeb satellites, including French experts, gave the go-ahead for the further preparation of the Frigate for the launch.

The source noted that a pinhole in the “Frigate” could have occurred either during the production of the upper stage or during its transportation to the Kourou cosmodrome. "By manufacture it is improbable. Most likely, during transportation", - he told.

The interlocutor of the agency added that the launch of OneWeb satellites was postponed, but there is no exact date for the launch of the Soyuz-ST launch vehicle.

X-ray check

Another source in the industry also confirmed to Tass that the pinhole on the Frigate was eliminated. “The microhole is really patched up, now additional tests are being carried out at the Kourou cosmodrome. Russian experts at Kourou asked their French colleagues to check the Frigate again with an X-ray machine, since Russian specialists do not have such a device at the cosmodrome,” the source said.

He added that before sending to Kura, the upper stage was checked with an X-ray machine at NPO Lavochkina and no micro holes were detected. “Accordingly, this pinhole appeared after the device was taken away from the enterprise. Most likely, during transportation,” said the source.

Roskosmos told TASS that the specialists of NPO Lavochkin, who will fly to Kura on Thursday, upon arrival at the cosmodrome will conduct the full range of necessary work with the upper stage "and report on the results to the customer [of OneWeb], who decides to start."

Offline zubenelgenubi

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Cross-post;
Launch time is February 27 MST = February 26 UTC and GFT (Kourou local time)
https://ria.ru/20190131/1550197297.html
Google translate:
Quote
MOSCOW, January 31 - RIA News. Troubleshooting the Fregat upper stage, which is intended to launch British OneWeb communication satellites with the Soyuz launch vehicle from the Kourou cosmodrome, will take a week, so the start is shifted from February 20 to February 27, a source in the space rocket told RIA Novosti.
« Last Edit: 02/01/2019 01:42 am by zubenelgenubi »
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Offline Olaf

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Offline Olaf

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https://sputniknews.com/europe/201902041072094900-france-arienspace-kourou-fregat-booster-russia/
Quote
"Arianespace company has not accepted the offer by the Russian Lavochkin Research and Production Association, which is the producer of the Fregat booster, to repair the unsealed welding seam by putting a bandage on it. We are currently negotiating the possibility to carry out the welding works at the space center, but Arianespace opposes this idea as it believes that repairs should be carried out at the factory", the source said.

Online FutureSpaceTourist

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https://twitter.com/jeff_foust/status/1092825498571423745

Quote
Emmanuel Sauzay os Airbus says first OneWeb satellite launch in a “few weeks” as still waiting for some issues to be resolved with the Soyuz launching them. (That launch was scheduled for mid-February prior to issues announced lats week with the Fregat upper stage.) #smallsat2019

Offline SciNews

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Re: Soyuz-STB/Fregat-M (VS21) - OneWeb (x6) - NET March 2019
« Reply #29 on: 02/05/2019 09:10 pm »
Stéphane Israël: 22 February

Offline russianhalo117

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Re: Soyuz-STB/Fregat-M (VS21) - OneWeb (x6) - NET March 2019
« Reply #30 on: 02/06/2019 03:31 am »
Stéphane Israël: 22 February
26 per NPO PR as stated on RussianSpaceWeb.

Offline Salo

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Re: Soyuz-STB/Fregat-M (VS21) - OneWeb (x6) - NET March 2019
« Reply #31 on: 02/06/2019 07:37 am »
https://ria.ru/20190206/1550452103.html
Google translate:
Quote
After successfully launching the Ariane-5ECA launch vehicle with two telecommunications satellites from Kourou on Wednesday night, Israel announced that the tentative launch date for OneWeb satellites is February 22.

Offline Salo

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Re: Soyuz-STB/Fregat-M (VS21) - OneWeb (x6) - NET March 2019
« Reply #32 on: 02/06/2019 10:18 am »
https://ria.ru/20190205/1550416916.html
Google translate:
Quote
MOSCOW, February 5 - RIA News. Experts at the Kourou cosmodrome have begun to test the tightness of the main line with a welded "crack" on the Fregat upper stage, intended to launch the first British OneWeb communication satellites, a source in the rocket and space industry told RIA Novosti on Tuesday.
"Visually, the quality of brewing a leaky seam on the helium supply line was rated by experts as good. Therefore, the cosmodrome began filling the Fregat upper stage with helium in order to check the tightness of the sealed crack," the agency’s source said.

Offline SciNews

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Re: Soyuz-STB/Fregat-M (VS21) - OneWeb (x6) - NET March 2019
« Reply #33 on: 02/06/2019 05:07 pm »
https://twitter.com/arianespaceceo/status/1093206883756883969
Quote
Happy to share that the launch date targeted for @OneWeb #VS21 launch is February 22, 2019! @OneWebSatellit1 #teamwork #Missiontosuccess

Offline zubenelgenubi

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Well, this has been an interesting dance re: quick succession of launch dates...
Feb. 19, to Feb. 26, to possibly March, to Feb. 22.

That's the launch biz! :)
« Last Edit: 02/06/2019 09:41 pm by zubenelgenubi »
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Offline Salo

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Offline Artyom.

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Unofficially: February 26
https://ria.ru/20190208/1550598624.html

Quote from: Translator
The launch of OneWeb satellites from the Kuru cosmodrome on the Russian carrier rocket Soyuz using the Fregat upper stage, in which the crack was previously detected and eliminated, was postponed from 22 to 26 February, a source in the rocket and space industry told RIA Novosti.
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Offline PM3

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Now official February 26:

https://twitter.com/greg_wyler/status/1095467203888103426

Quote from: Greg Wyler
New Date: Tuesday, Feb 26. Four day slip! This is new territory launching so many autonomous spacecraft, and they were factory built. Two firsts, so we are moving carefully in every way. A few days here or there to double check rockets, routines and process is ok by me :)

If these go well we will be set for launching the entire system. Its not just the six satellites but we are constantly reviewing the entire supply chain, manufacturing process repeatability and all the code to make this smooth. Looking good!
« Last Edit: 02/12/2019 10:59 pm by PM3 »

Offline Artyom.

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"Earth is the cradle of humanity, but one cannot live in a cradle forever." - Konstantin Eduardovich Tsiolkovsky.

Offline Artyom.

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February 27 at 00:37 UTC (February 26 at 21:37 local time/February 27 at 03:37 Moscow time)

Quote from: Translator
The launch of the first six British communication satellites OneWeb carrier rocket "Soyuz" from the Kourou spaceport is scheduled for February 27 at 3:37 Moscow time, told RIA Novosti on Friday a source in the rocket and space industry.

"The launch is scheduled for February 27 at 3:37 Moscow time or February 26 at 21:37 local time," - said the Agency interlocutor.
https://ria.ru/20190215/1550896393.html
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Offline jacqmans

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February 13, 2019 

Six OneWeb satellites are integrated for their upcoming Arianespace Soyuz launch


Arianespace has completed a major preparation milestone for its next Soyuz launch with integration of the mission’s high-profile payload: the initial six spacecraft in OneWeb’s constellation, which will provide affordable high-speed internet access for users around the world.

The spacecraft – produced by the OneWeb Satellites joint venture of OneWeb and Airbus – will be orbited on Arianespace’s first Soyuz mission of 2019 from the Spaceport in French Guiana. Designated Flight VS21, it has a targeted liftoff of February 26.

Integration of the six satellites on their multi-payload dispenser system – which will deploy them during the mission from atop Soyuz’ Fregat upper stage – was completed in the Spaceport’s S3B payload preparation facility.

Helping OneWeb connect the unconnected

Once placed in a near-polar orbit by Soyuz, the OneWeb spacecraft will operate at an altitude of 1,200 km., giving customers extremely low latency and providing communications access to the entire world with fiber-quality internet connectivity. OneWeb is building the world’s largest and highest throughput satellite system to connect everyone, everywhere – by land, air, sea with a vision to bridge the digital divide once and for all.

To develop its constellation of 150-kg. satellites, OneWeb signed a contract with Arianespace in 2015 for 21 Soyuz launches.

The upcoming Flight VS21 will mark the 21st liftoff of Soyuz from French Guiana since this medium-lift launcher’s 2011 operational debut at the Spaceport.

As Arianespace’s second of up to 12 missions planned for 2019, Flight VS21 also will continue the momentum gained from the company’s year-opening launch: Flight VA247 with Ariane 5, which successfully delivered a pair of telecommunications relay platforms – Saudi Geostationary Satellite 1/Hellas Sat 4 (HS-4/SGS-1) and GSAT-31 – to geostationary orbit on February 5.

http://www.arianespace.com/mission-update/vs21-oneweb-integration/

Offline PM3

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February 27 at 00:37 UTC (February 26 at 21:37 local time/February 27 at 03:37 Moscow time)
...
https://ria.ru/20190215/1550896393.html

Looks like RIA confused the timezones. CSG says February 26 at 21:37 UTC (6:37 pm local time):

https://cnes-csg.reservationlancement.fr/en/Inscription/Lancements

Offline Alter Sachse

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https://www.roscosmos.ru/25920/

27.02.2019 00:37:00 (Moscow time)---->21:37

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