Author Topic: RS EVA VKD-61 - Nauka outfitting/RTOd leak tasks - Oct 25 2023 (Kononenko, Chub)  (Read 12835 times)

Online eeergo

Spacewalk still on in spite of the leak on Nauka's external radiator, although understandably modified to account for it.


https://twitter.com/katlinegrey/status/1711779893954883950
« Last Edit: 10/16/2023 09:20 am by Galactic Penguin SST »
-DaviD-

Offline SMS

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Spacewalk still on in spite of the leak on Nauka's external radiator, although understandably modified to account for it.


https://twitter.com/katlinegrey/status/1711779893954883950

October 25th, 2023 is correct schedule date!
« Last Edit: 10/10/2023 05:26 pm by SMS »
---
SMS ;-).

Online eeergo

Well spotted, thanks!
-DaviD-

Online Galactic Penguin SST

https://www.nasa.gov/nasatv/

Wednesday, Oct. 25
2 p.m. — Coverage of Russian Spacewalk 61 at the International Space Station to install a synthetic radar communications system, deploy a solar sail technology satellite, replace electrical connector patch panels, and photograph the Multipurpose Laboratory Module’s external radiator. Spacewalk expected to begin at approx. 2:30 p.m. and last approx. 6 hours, 45 minutes

= ~18:30 UTC
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Offline russianhalo117

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https://www.nasa.gov/nasatv/

Wednesday, Oct. 25
2 p.m. — Coverage of Russian Spacewalk 61 at the International Space Station to install a synthetic radar communications system, deploy a solar sail technology satellite, replace electrical connector patch panels, and photograph the Multipurpose Laboratory Module’s external radiator. Spacewalk expected to begin at approx. 2:30 p.m. and last approx. 6 hours, 45 minutes

= ~18:30 UTC
The SAR instrument to be installed is Rakurs and was built by IPG. The instrument will be mounted on a special adapter of the UFP2 passive standard attachment point of the Nauka module
« Last Edit: 10/25/2023 04:14 pm by russianhalo117 »

Online Yellowstone10

https://www.nasa.gov/news-release/nasa-sets-coverage-for-roscosmos-spacewalk-outside-space-station/

Quote
NASA will provide live coverage as two Roscosmos cosmonauts conduct a spacewalk outside the International Space Station Wednesday, Oct. 25, to install communications hardware and inspect a portion of the orbital complex. 

Coverage begins at 1:45 p.m. EDT on NASA Television, the NASA app, and the agency’s website. The spacewalk is expected to begin at 2:10 p.m. and could last up to seven hours.

Expedition 70 cosmonauts Oleg Kononenko and Nikolai Chub will venture outside of the station’s Poisk module to install a synthetic radar communications system and release a nanosatellite to test solar sail technology. While outside the station, they also will inspect and photograph an external backup radiator on the Nauka multipurpose laboratory module that experienced a coolant leak on Oct. 9.

The spacewalk will be the 268th in support of space station assembly, maintenance, and upgrades. It will be the sixth for Kononenko, who will wear the Orlan spacesuit with red stripes and the first for Chub, who will wear the spacesuit with blue stripes.

Online Yellowstone10

Here's the YouTube link for Russian-language coverage:



as well as the press kit imagery from Roscosmos's Telegram.

Online Yellowstone10

And the rest of the press kit:

Online Yellowstone10

The Napor-miniRSA equipment that will be installed on the exterior of Nauka was reportedly launched to the station with Progress MS-22 back in February 2023:

https://interfax.com/newsroom/top-stories/87787/

Quote
The spaceship is also carrying kits for Russian scientific experiments, including Kardiovektor, Neiroimmunitet, Pilot-T, Matryoshka-R, Biomag-M, Antiseptik, Probiovit, Struktura, Fotobioreaktor, Biodegradatsiya, Biopolimer, and Sepatsiya.

Additionally, it will supply equipment for the Napor-miniRSA experiment and an ASN-KM satellite navigation antenna to be installed on the exterior of Russian modules during spacewalk.

There are some references to another Napor-miniRSA experiment in the 2016-17 timeframe, so I'm not sure how those are related.

Edit - after some additional research, it seems like Napor-miniRSA involves both an optical and a radar component, and the optical part's been up there for a while - it's those cameras that UrtheCast sent up there back in 2013 that took a couple EVAs to successfully install during Expedition 38. Now that Nauka's up and running, they can finally install the SAR component and start cross-referencing between the observations.
« Last Edit: 10/25/2023 12:00 am by Yellowstone10 »

Online Yellowstone10

Russian comms have switched over to Space-to-Ground 2 in advance of today's spacewalk.

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Russian comms have switched over to Space-to-Ground 2 in advance of today's spacewalk.
Russian comms have switched over to Space-to-Ground 2 in advance of today's spacewalk.

Sometoday, maybe today, I wish an expert/insider would explain the functional differences between SG 1 and SG 2..
« Last Edit: 10/25/2023 05:10 pm by Galactic Penguin SST »
Best quote heard during an inspection, "I was unaware that I was the only one who was aware."

Online Yellowstone10

Port and starboard SARJs are both in Shutdown mode as of about 15:20Z. (Presumably for EVA ops?)

The video feed is also now on a "No WVS Video" test screen, and the Node 1 WETA is one of the downlink video sources.
« Last Edit: 10/25/2023 03:28 pm by Yellowstone10 »

Online Yellowstone10

SG2 now has a Russian-to-English translator narrating the spacewalk preps.

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Working through leak checks on Poisk - sounds like everything's going as planned so far.

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Waiting for the prebreathe period to finish up...

Online Yellowstone10

Prebreathe is finishing up right about now. They're currently about 8 minutes ahead of schedule.

Online Yellowstone10

Pressure is down to 35 millimeters.

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nICE VIEW OF THE THREE SPACECRAFT

Online Yellowstone10

NASA TV coverage has started. Rob Navias is today's commentator.

Online Yellowstone10

Thermal Loop #1 is the leaky one, and Loop #2 is active. Both loops go through both the body mounted radiators and the external radiator - but they'll be closing some valves at the radiator to shut off both loops from the RTOd at this point. They'll also connect the external radiator part of Loop #2 to the fluid reservoir they used to fill it, so as to provide thermal expansion space, since they're not draining that loop. Eventually they hope to bring up more fluid to refill Loop #1.

Navias is also discussing the additional clean-up steps they'll take to mitigate any risk of bringing coolant inside the ISS - careful wipedowns, plus an extra filtration system activated in Poisk for about 24 hours.

Online Yellowstone10

Mission Control views. David Saint-Jacques of CSA is the USOS capcom.

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Hatch is open, EVA has officially begun - 12:49 pm Central, 1:49 pm Eastern.
« Last Edit: 10/25/2023 05:51 pm by Yellowstone10 »

Online Yellowstone10

Navias reports that the first 3 hours or so of the EVA will be dedicated to radiator ops.

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Protective ring has been installed, hatch is secured open. Nikolai Chub will be the first one out the hatch so he can start acclimating himself to movement in the suit (this being his first EVA).

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Cosmonauts are bringing a couple of equipment bundles outside the airlock. No video coverage at the moment, they're in that Ku-band dead spot over the Indian Ocean.

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snrk:

One cosmonaut, presumably Chub: "This is not really convenient."

The other, presumably Kononenko: "Better get used to it."

(also inconvenient, the lack of video coverage)

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One cosmonaut reports that he's feeling warm in his suit. The other (given that they're in an orbital night) quips that it must be the moonlight heating him up.

(25 minutes into this EVA and still audio-only. Is this what it was like to follow EVAs back in the Shuttle era?)

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A helmet camera view! Although I'm not sure who or of what.

Edit - there's a view of the SAR antenna that will be deployed with the Napor-miniRSA experiment, from Chub's helmet.
« Last Edit: 10/25/2023 06:19 pm by Yellowstone10 »

Online Yellowstone10

Napor antenna is also outside the airlock - that's the last of it, they'll now move those down to Nauka.
« Last Edit: 10/25/2023 06:22 pm by Yellowstone10 »

Online Yellowstone10

Chub is by the operator station of Strela, to start moving stuff down from Poisk down to the worksite.

Online Yellowstone10

Looking forward towards the back side of the truss - with a small cameo by Crew Dragon.

Online Yellowstone10

Still trying to work out the best way to tether everything to the movable ring on Strela. The object Chub is holding is the mount on which they'll affix the radar antenna.

Online Yellowstone10

Actually I think we had the cosmonauts backwards - we can now see the blue stripes on the other one's suit, so that's Chub, and the camera must be on Kononenko.

Online Yellowstone10

The cosmonauts have the radiator in view - one of them mentioned not seeing any obvious defects, at least from this angle.

Online Yellowstone10

The blocky thing is the dispenser for the Parus satellite they'll deploy later in the spacewalk.

First-time spacewalker Chub notes that the sun is really quite bright.

Online Yellowstone10

A great view down of Baja California. MCC-Moscow reports having issues receiving both cosmonauts' helmet cam views, which must be referring to the standard-definition older cameras (rather than the HECA on Kononenko).

Edit - also, our first view from a station camera, of some feet.
« Last Edit: 10/25/2023 06:49 pm by Yellowstone10 »

Online Yellowstone10

Lots and lots of tethers.

Online Yellowstone10

Still more discussion of tethers, but they're finally translating down toward Nauka (over an hour into the EVA).
« Last Edit: 10/25/2023 07:05 pm by Yellowstone10 »

Online Yellowstone10

Now getting things tethered / secured to Nauka, near the base of the radiator.

Online Yellowstone10

Kononenko has translated down to the ERA operator post, below the radiator. Lots of flakes as he went by, but I suspect that's his helmet knocking off paint chips.

Online Yellowstone10

Chub Kononenko opened valves 1-KL and 2-KL on a bypass line of some sort.
« Last Edit: 10/25/2023 07:30 pm by Yellowstone10 »

Online Yellowstone10

Actually Chub this time, working on closing some valves at the radiator itself. (Navias has gotten them backwards a few times.)

Online Yellowstone10

More valves. MCC-Moscow suggests that Chub might want to take a short break.

Edit - interestingly, he did a couple (4 and 5) with a wrench and then the rest with a hand tool. Not sure what the difference was there? The ones that he's doing by hand (6 to 9), he's doing a quarter turn at a time down the row, then repeating that over and over.
« Last Edit: 10/25/2023 07:42 pm by Yellowstone10 »

Online Yellowstone10

Navias reports that they are 25-30 minutes ahead of schedule.

Online Yellowstone10

Chub is now on his 26th pass over the valves, one-quarter turn at a time... He was warned that some coolant might come out after this point, so to be careful.

And now up to 29!

Online Yellowstone10

Chub eventually got to 34 quarter-turns, then Kononenko opened valve KR-2 (I think) to connect the radiator loop to the coolant reservoir. They wrapped up with close-out photos.

Online Yellowstone10

Chub is reviewing the radiator - he reports some black spotting and slight rippling in the panels.

Online Yellowstone10

Got called off into a meeting at just the wrong time - there's now a large blob of coolant on one of the lines at the radiator joint, that's occasionally spitting off droplets.

Online Yellowstone10

One end of a tether got soaked in coolant and was splashing droplets around. The spacewalkers have been told to leave the area. They quite sensibly concluded that the famous Russian space towels would not be up to the job of cleaning that up.

Edit - added a picture of the tether getting wetted by the coolant.
« Last Edit: 10/25/2023 08:36 pm by Yellowstone10 »

Online Yellowstone10

Kononenko and Chub are now back at Poisk to retrieve the equipment for their next tasks.

Online Yellowstone10

Kononenko has the radar antenna, but one of the deployment pins has popped out prematurely. They're trying to get it re-seated, but can't seem to push it far enough in - don't really have anything thin enough.

Update - they found a wrench that did the trick.
« Last Edit: 10/25/2023 08:55 pm by Yellowstone10 »

Online Yellowstone10

Here's a freeze-frame showing a bubble that's just about to pop - shows exactly where the point of the leak is.

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Quote
RS EVA-61 (ET: 3:15; 5:04pm EDT): Kononenko and Chub are now working to install a mini synthetic aperture radar instrument on a fixture attached to the Nauka module; no more work at the radiator leak site is planned

https://twitter.com/cbs_spacenews/status/1717288264455913607
To boldly go where no human has gone before !

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Quote
After arranging their cargo, the spacewalkers are now returning to Nauka for the installation of a remote-sensing radar, the module's first scientific instrument:

https://twitter.com/RussianSpaceWeb/status/1717287625021706472
To boldly go where no human has gone before !

Online Yellowstone10

The spacewalkers are back down at Nauka, pretty close to the radiator - I haven't heard any remarks about any change of procedure to avoid the coolant blob, so they must not be too worried.

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Heading to the next worksite, although apparently a handrail wasn't quite in the spot they expected, which caused a bit of difficulty.

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Sunrise on the ISS.

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Another view of the Napor-miniRSA radar antenna on its mounting frame.

Edit - also, there's the portable workstation that was deployed during the previous Russian spacewalk.
« Last Edit: 10/25/2023 09:36 pm by Yellowstone10 »

Offline Robotbeat

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What is the actual coolant composition?
Chris  Whoever loves correction loves knowledge, but he who hates reproof is stupid.

To the maximum extent practicable, the Federal Government shall plan missions to accommodate the space transportation services capabilities of United States commercial providers. US law http://goo.gl/YZYNt0

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MCC-Moscow: "OK guys, relax, rest, and enjoy the view."

Cosmonaut: "That's what we're doing!"

(Mission Control has repeated themselves several times. They seem dubious.)

What is the actual coolant composition?

Some type of silicone oil - polymethylsiloxane or something like that. Not particularly volatile, as you can tell.

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Positioning the radar equipment over the mounting point.
« Last Edit: 10/25/2023 09:46 pm by Yellowstone10 »

Offline centaurinasa

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Quote
RS EVA-61 (ET: 3:14; 5:03pm EDT): Taking a break from the radar installation work, a cosmonaut observed "the view here is just... knock you off your feet;" MCC-Moscow: "All right, guys, relax, rest and enjoy the view;" cosmonaut: "That's exactly what we're doing"

https://twitter.com/cbs_spacenews/status/1717295318310478327
To boldly go where no human has gone before !

Online Yellowstone10

About 4 hours into the EVA. No Pistol Grip Tools on the Russian side, so instead the equipment is installed by turning a handle. They've turned said handle several dozen rotations, and the radar equipment isn't coming away from the mounting point, but it's also still loose.

Online Yellowstone10

They got the adapter installed firmly (and this was confirmed by telemetry from ground controllers). Chub wire-tied the handle in place, and Kononenko is demating some cables that they will presumably hook up to the radar.

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Now that the equipment is affixed to the station, Chub is working to un-spool the cables they'll use to hook up the radar.

Offline centaurinasa

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RS EVA-61 (ET: 4:15; 6:04pm EDT): The cosmonauts are wrapping up installation of the payload adapter that will support the synthetic aperture radar instrument; meanwhile, a nice helmetcam view of the southern Pacific Ocean 260 miles below

https://twitter.com/cbs_spacenews/status/1717301275073696231
To boldly go where no human has gone before !

Online Yellowstone10

If any of the USOS crew are up and about, they're probably getting a good view from the Cupola there.

Online Yellowstone10

Cabling work.

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Interesting - that component with the handles and the crank was actually a multiple-use manual actuator unit that they have now removed.

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Nearly five hours into today's spacewalk, two cosmonauts successfully install a radar communications system to a payload adapter on the Nauka module

https://twitter.com/Space_Station/status/1717311321656463493
To boldly go where no human has gone before !

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« Last Edit: 10/25/2023 10:49 pm by catdlr »
Tony De La Rosa, ...I'm no Feline Dealer!! I move mountains.  but I'm better known for "I think it's highly sexual." Japanese to English Translation.

Online Yellowstone10

Ground controllers report that they've confirmed via telemetry that all cables for the radar unit have been hooked up correctly.

Online Yellowstone10

Kononenko and Chub are discussing the differences between training in the Hydro Lab and the real thing - for one, they note that you can move with less resistance in space.

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The Parus dispenser has been clamped to a handrail. Mission Control is now talking to Borisov on another channel to make sure he's ready to get imagery of the deployment.

Online Yellowstone10

Borisov is getting the camera positioned for the desired view. Kononenko joked to MCC-Moscow that he'd already pulled the safety pin - really he just attached a tether to it.

Online Yellowstone10

Nanosat's power LEDs are on.

Online Yellowstone10

Parus satellite deployed at 6:20 pm Central, albeit in slightly janky fashion - the door opened, but the spring didn't push it out right away, possibly due to a temperature issue.

Online Yellowstone10

The radar monoblock is also apparently deploying, but the camera angles are focused on the nanosat. It's supposed to deploy its sail very shortly.

(Er... they're now saying that the sail should have deployed already. It has not.)
« Last Edit: 10/25/2023 11:31 pm by Yellowstone10 »

Online Yellowstone10

The radar antenna looks pretty well deployed.

Online Yellowstone10

Kononenko is back up at the zenith end of Nauka, having brought the Parus dispenser back with him. Still no joy on the solar sail deployment.

Online Yellowstone10

Two of the four panels of the radar only partially deployed (the other two deployed fully), so the spacewalkers are going to head back to that worksite and attempt to manually deploy them the rest of the way.

Online Yellowstone10

This view shows the hinge that didn't quite deploy to 180°.

Online Yellowstone10

It seems that the panel can move to the full 180-degree position, but it's not locking into place and springs back to 160 degrees or so.
« Last Edit: 10/26/2023 12:17 am by Yellowstone10 »

Online Yellowstone10

It looks like those pins are supposed to be held in place by latches once they move to 180°, but the latches aren't working for some reason. Chub is fiddling around inside the latch socket area with tools to see if he can get it to move.

MCC Moscow has just told him to stand down, but Chub doesn't sound happy with this.

Online Yellowstone10

The spacewalkers are working their way back up to Poisk.

(I have to drop offline for a bit - may or may not be back for airlock entry and repress, so if anyone wants to tag in please go ahead!)

Online Yellowstone10

Hatch closure time was 8:30 pm Central, 9:30 pm Eastern for an EVA duration of 7 hours 41 minutes.

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The obligatory "By the Numbers" shot, plus one of the video board at MCC Moscow.

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Navias has signed off, wrapping up NASA TV coverage.

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For /u/jcm's records, in addition to the Parus deployment, there were also two towels / towel bundles discarded around 9:05 pm Eastern, one for each cosmonaut.

Offline jcm

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For /u/jcm's records, in addition to the Parus deployment, there were also two towels / towel bundles discarded around 9:05 pm Eastern, one for each cosmonaut.


Thanks for this, I was stuck in meetings and other duties today.
-----------------------------

Jonathan McDowell
http://planet4589.org

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Elbow repair on the Russian Orlan MKS n° 4 space suit ?
Check these September 2021 and October 2023 photos   :-\

Offline SMS

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NASA ISS EVA stats:
---
SMS ;-).

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NASA photos

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Minor update while I'm looking at Celestrak tonight: the two towel bundles that were jettisoned during this EVA were tracked as 1998-067VZ, which decayed on 12 November 2023, and -067WB, which decayed on 15 November. The Parus nanosatellite has descended about 20 km to a semi-major axis of 395 km.

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