Soyuz

[4x4Tyke]

Eric Mc said:

Notice - I'm not arguing. Yes, discussing the Shuttle is a deviation and I've acknowledged that. Discussing me is an even bigger deviation and I won't be discussing that topic any further.

However, I did think that there were some similarities between what happened with Challenger and this recent Soyuz incident - with wildly different outcomes, of course.

Comparing and contrasting escape systems, types of failure and investigating those failures has been brought into this topic by the news. So IMHO the Challenger failure stuff was on-topic but it was drifting further off with the wider shuttle stuff.

In general I try to respect view thread starter's view with regard to what is in scope or what is off topic, which in this case happens to be you.

NASA seem committed to ongoing collaborate with Soyuz and ISS.

https://twitter.com/JimBridenstine/status/10515844...

[Eric Mc]

Thanks.

No more Shuttle talk for the moment.

I'm sure NASA has little choice.

[4x4Tyke]

First hand account by Nick Hague, nothing unexpected but interesting nonetheless.

https://www.cnet.com/news/nasa-astronaut-details-f...

[Eric Mc]

Let's hope they get to the bottom of what happened soon.

[funkyrobot]

Must be gutting knowing you got so close to going into space. I wonder if reached the height required to be classed in space.

[Eric Mc]

Nope - failed in that too.

The abort occurred at an altitude of 40km. I don't think that the ballistic arc carried out by the Soyuz descent module would have taken them above that arbitrary "space" marker, the 100km Karman Line.

[funkyrobot]

Oh well. Try again next time.

[Eric Mc]

Interestingly, a Soyuz booster was used last night to launch a Russian military satellite (Cosmos 2528) from the Plesetsk Cosmodrome. I'm not sure if it's the same version of the booster used for manned Soyuz missions.

[MartG]

Eric Mc said:

Interestingly, a Soyuz booster was used last night to launch a Russian military satellite (Cosmos 2528) from the Plesetsk Cosmodrome. I'm not sure if it's the same version of the booster used for manned Soyuz missions.

There's an article onNASASpaceflight about how there are several Soyuz launches coming up, including at least one of the same model which failed, which will be used to recertify it for manned flight

https://www.nasaspaceflight.com/2018/10/nasa-rosco...

[carl_w]

Sensor failure, next crewed launch December: https://sputniknews.com/science/201810311069380223...
http://www.spacedaily.com/reports/Russia_plans_fir...

Edited by carl_w on Thursday 1st November 12:01

[MartG]

I wonder if/when they'll cycle the guys from the aborted flight back into the planned launch schedule

[Beati Dogu]

Roscosmos have released a video of the launch:

https://www.youtube.com/watch?v=CrzlMTRVt_I

Keep an eye on the left hand booster after 1.20 minutes in.

It's pretty clear that the top of the booster failed to detach upon separation; So the pointy nose pivoted inwards and pierced the main rocket's tank.

Edited by Beati Dogu on Thursday 1st November 16:50

[4x4Tyke]

Beati Dogu said:

Roscosmos have released a video of the launch:

https://www.youtube.com/watch?v=CrzlMTRVt_I

Keep an eye on the left hand booster after 1.20 minutes in.

It's pretty clear the the top of the booster failed to detach upon separation; So the pointy nose pivoted inwards and pierced the main rocket's tank.

... and watch it at 1/4 speed to see what actually happens, otherwise it unfolds too quickly to really see.

Click the cog bottom right to select the playback speed.

[funkyrobot]

As Eric posted earlier in the thread, the RTL reporter was spot on.

They know the cause. Wonder what happened to that specific booster.

[Eric Mc]

Good explanation by Scott Manley -

https://www.youtube.com/watch?v=5boa6wAK0Sc

A bent pin stopped the sensor for activating - which stopped oxygen venting - which stopped the tip of the strap on booster pivoting away from the center core stage.

The question has to be - how did the pin get bent in the first place. It looks like it was due to sloppy and poor assembly.

[funkyrobot]

Indeed. I was chatting to my wife about this. If the part wasn't fitting correctly, was it forced into place rather than the assembler asking why it wouldn't fit?

[RobDickinson]

Sounds like when they used a hammer to fit a sensor upside down on the other rocket...

[funkyrobot]

First the drill hole, now this.

They have been quite sloppy of late.

[Eric Mc]

Reminds me a bit of the DC-10 cargo door story. The door wasn't closing properly so give it a bit of welly and inadvertently fatally damage the locking mechanism which cause the door to blow out as the aircraft climbs - causing the plane to crash..

[funkyrobot]