Author Topic: Eutelsat OneWeb: Constellation - General Thread (Read 682199 times)

Rondaz · « **Reply #1660 on:** 11/16/2021 05:19 pm »

Preparation of the Fregat upper stage continues at Baikonur

11/16/2021 20:36

At the Baikonur cosmodrome, in accordance with the comprehensive work schedule for the OneWeb spacecraft launch program, the preparation of the Fregat upper stage is continuing. Currently, pneumatic vacuum tests are being carried out, as well as the evaluation of telemetric information.

Technological operations are performed by specialists from the Yuzhny Space Center (a branch of the Center for Operation of Ground-Based Space Infrastructure Facilities) and the S.А. Lavochkin (part of the State Corporation "Roscosmos") in the assembly and testing building of site No. 31. After the final operations, the upper stage will be transported to the filling and neutralization station and, directly, the filling itself.

Upper stage "Fregat" produced by the Scientific and Production Association named after S.А. Lavochkin is preparing to launch the 37th mission of the OneWeb spacecraft. The launch of the Soyuz-2.1b carrier rocket is scheduled for the end of December from the Baikonur cosmodrome.

https://www.roscosmos.ru/33370/

su27k · « **Reply #1661 on:** 11/17/2021 02:32 am »

OneWeb satellite fails in orbit at 1,200 km, company vows to de-orbit it per French, UK rules

Quote from: spaceintelreport.com

One of the 358 OneWeb broadband satellites has failed in its operating orbit of 1,200 kilometers and the company has committed to working with startup debris-removal companies, including Astroscale, to de-orbit it in keeping with French and UK space regulations.

The failure of the satellite, apparently launched in early 2020, has been ascribed to a software glitch that OneWeb believes will not occur on the other satellites launched at the same time because a corrective software patch has been uploaded to these satellites.

Rondaz · « **Reply #1662 on:** 11/17/2021 10:58 am »

At the Baikonur cosmodrome, the preparation of the Fregat upper stage under the #OneWeb mission # 37 spacecraft launch program continues . Now pneumatic vacuum tests are underway, as well as the evaluation of telemetric information. Launch - at the end of December

https://twitter.com/roscosmos/status/1460849307846852612

Asteroza · « **Reply #1663 on:** 11/19/2021 04:52 am »

Quote from: su27k on 11/17/2021 02:32 am

OneWeb satellite fails in orbit at 1,200 km, company vows to de-orbit it per French, UK rules

Quote from: spaceintelreport.com
One of the 358 OneWeb broadband satellites has failed in its operating orbit of 1,200 kilometers and the company has committed to working with startup debris-removal companies, including Astroscale, to de-orbit it in keeping with French and UK space regulations.

The failure of the satellite, apparently launched in early 2020, has been ascribed to a software glitch that OneWeb believes will not occur on the other satellites launched at the same time because a corrective software patch has been uploaded to these satellites.

Is this dead sat equipped with a DogTag?

jongoff · « **Reply #1664 on:** 11/19/2021 05:49 am »

Quote from: Asteroza on 11/19/2021 04:52 am

Is this dead sat equipped with a DogTag?

No, unfortunately it was equipped with the original grapple fixture that DogTags replaced. I can now mention this because it was publicly mentioned at the CONFERS GSSF by someone from OneWeb, but DogTags were only phased in starting on the first flight after the bankruptcy. I think there were like 6-8 satellites on that launch that had the last of the original grapple fixtures, and all launches since then had DogTags on them. But this one was from one of the first three launches, so it had the old grapple fixture design.

~Jon

dglow · « **Reply #1665 on:** 11/19/2021 12:47 pm »

Quote from: jongoff on 11/19/2021 05:49 am

Quote from: Asteroza on 11/19/2021 04:52 am
Is this dead sat equipped with a DogTag?

No, unfortunately it was equipped with the original grapple fixture that DogTags replaced. I can now mention this because it was publicly mentioned at the CONFERS GSSF by someone from OneWeb, but DogTags were only phased in starting on the first flight after the bankruptcy. I think there were like 6-8 satellites on that launch that had the last of the original grapple fixtures, and all launches since then had DogTags on them. But this one was from one of the first three launches, so it had the old grapple fixture design.

~Jon

Great news still – congrats, Jon!

Rondaz · « **Reply #1666 on:** 11/19/2021 06:15 pm »

Another update from @OneWeb in today's @helena_indy newspaper (http://independent.sh/wp-content/uploads/2021/11/St-Helena-Independent-20211119.pdf): company waits for green light from @StHelenaGovt for its ground station on #StHelena which could extend storm-resilient broadband to #TristandaCunha the UK's remotest community by early 2023

https://twitter.com/ConnectStHelena/status/1461769874750029836

jcm · « **Reply #1667 on:** 11/20/2021 12:09 am »

Quote from: jongoff on 11/19/2021 05:49 am

Quote from: Asteroza on 11/19/2021 04:52 am
Is this dead sat equipped with a DogTag?

No, unfortunately it was equipped with the original grapple fixture that DogTags replaced. I can now mention this because it was publicly mentioned at the CONFERS GSSF by someone from OneWeb, but DogTags were only phased in starting on the first flight after the bankruptcy. I think there were like 6-8 satellites on that launch that had the last of the original grapple fixtures, and all launches since then had DogTags on them. But this one was from one of the first three launches, so it had the old grapple fixture design.

~Jon

Has it been announced which specific sat it is?

Rondaz · « **Reply #1668 on:** 11/20/2021 09:59 am »

One of the early OneWeb satellites is reported failed. Unclear which one but SL0026 seems to be behaving oddly

https://twitter.com/planet4589/status/1461869366274887692

Rondaz · « **Reply #1669 on:** 11/20/2021 10:00 am »

You are correct, I withdraw my suspicions about SL0026. The jitter is entirely due to a difference between the SpaceTrack TLEs and Celestrak SupTLEs. But I wonder why it's only this sat that shows the offset.

https://twitter.com/planet4589/status/1461904259251847169

Rondaz · « **Reply #1670 on:** 11/20/2021 05:43 pm »

I was wrong about OneWeb SL0026. The failed satellite is OneWeb SL0041, whose orbital height is shown below. All other OneWebs are apparently fine - a pretty good record.

https://twitter.com/planet4589/status/1462127263072272387

Rondaz · « **Reply #1671 on:** 11/26/2021 01:47 am »

http://Mining.com shows how our connectivity can benefit mines in remote communities. Improved connectivity can improve health and safety, accounting, resource planning, allow for increased automation and more.

https://twitter.com/OneWeb/status/1463911901797273609

Rondaz · « **Reply #1672 on:** 11/26/2021 01:52 am »

.@OneWeb arrives in Indonesia in 11 months. @dtp_net 300+ Gbps of new GEO HTS arrives by 2025 for @kemkominfo @telkomsat
@PSNengage. GEO for consumers, LEO for B2B early on. @HughesConnects..

https://twitter.com/pbdes/status/1463845222052503564

Asteroza · « **Reply #1673 on:** 11/26/2021 04:17 am »

Quote from: jongoff on 11/19/2021 05:49 am

Quote from: Asteroza on 11/19/2021 04:52 am
Is this dead sat equipped with a DogTag?

No, unfortunately it was equipped with the original grapple fixture that DogTags replaced. I can now mention this because it was publicly mentioned at the CONFERS GSSF by someone from OneWeb, but DogTags were only phased in starting on the first flight after the bankruptcy. I think there were like 6-8 satellites on that launch that had the last of the original grapple fixtures, and all launches since then had DogTags on them. But this one was from one of the first three launches, so it had the old grapple fixture design.

~Jon

Shame it wasn't a DogTag, would have been a nice on-orbit demo.

Do you know if the original fixture was a OneWeb designed device tailored for their own sat needs (or tailored for a specific future OTV/disposer profile/CONOPS), or full third party like DogTags?

LouScheffer · « **Reply #1674 on:** 11/28/2021 08:26 pm »

Quote from: Rondaz on 11/20/2021 05:43 pm

I was wrong about OneWeb SL0026. The failed satellite is OneWeb SL0041, whose orbital height is shown below. All other OneWebs are apparently fine - a pretty good record.

From this plot, the satellite lost 0.04 km in about 300 days from a starting altitude of 1078 km. At this rate, they will be down to the SpaceX altitude of 550 km in only a little more than 10,000 years. Although this is surely an overestimate (it will run into more drag as it drops) it's clear that each OneWeb satellite that fails will generate many more debris-years than a satellite that fails at a lower altitude.

Put another way, at any appreciable failure rate, there will be more dead OneWeb satellites in orbit at any given time than those from lower constellations.

Rondaz · « **Reply #1675 on:** 11/30/2021 01:09 pm »

A new batch of #OneWeb spacecraft of mission No. 37 was delivered to the Baikonur cosmodrome . The next stage of activities is the preparation of the vehicles at the technical complex.

Their launch from site number 31 is scheduled for late December

https://twitter.com/roscosmos/status/1465680716902055940

Rondaz · « **Reply #1676 on:** 11/30/2021 01:57 pm »

A new batch of OneWeb spacecraft delivered to Baikonur

11/30/2021 17:11

On Tuesday, November 30, 2021, a new batch of OneWeb spacecraft were delivered to the Baikonur cosmodrome as part of mission 37. They arrived at the Krainy airport by An-124 aircraft.

Specialists of the Yuzhny Space Center (a branch of the Center for Operation of Ground-Based Space Infrastructure Facilities, part of the Roscosmos State Corporation) unloaded spacecraft and further transported them to site No. 112 of the Baikonur cosmodrome. The next stage of technological measures is the preparation of devices at the technical complex.

The launch of the Soyuz-2.1b carrier rocket with the Fregat upper stage and OneWeb spacecraft is scheduled for the end of December from the Vostok launch complex of site No. 31. OneWeb low-orbit spacecraft are designed to provide ground-based consumers with high-speed Internet.

The first six OneWeb satellites flew into space from the launch site at the Guiana Space Center on a Soyuz-ST rocket on February 28, 2019. 34 devices were withdrawn from Baikonur on February 7, 2020, and the same number on March 21. For the first time, OneWeb was launched from the East in mid-December 2020 - then 36 devices were withdrawn. Then launches from the new Russian cosmodrome took place on March 25, April 26, May 28, July 1 and October 14, 2021, from Baikonur on August 22 and September 14, 2021.

https://www.roscosmos.ru/33502/

Rondaz · « **Reply #1677 on:** 11/30/2021 03:18 pm »

A new batch of 36 @OneWeb communication satellites arrived at the #Baikonur_Cosmodrome on Tuesday! The international team of specialists at the cosmodrome will prepare the spacecraft for the launch scheduled for the end of December 2021

https://twitter.com/glavkosmosJSC/status/1465711769670672403

jongoff · « **Reply #1678 on:** 11/30/2021 10:50 pm »

It was a 3rd party design, not custom designed for OneWeb. We just designed DogTags to use the same 3-bolt interface. I know exactly what the original interface is,, who made it, and why they switched to DogTags, but I'm not sure what I am contractually allowed to say beyond that. Sorry!

Jon

Asteroza · « **Reply #1679 on:** 12/01/2021 01:32 am »

Quote from: jongoff on 11/30/2021 10:50 pm

It was a 3rd party design, not custom designed for OneWeb. We just designed DogTags to use the same 3-bolt interface. I know exactly what the original interface is,, who made it, and why they switched to DogTags, but I'm not sure what I am contractually allowed to say beyond that. Sorry!

Jon

Well I guess the three bolt interface spec would be a giveaway...