Author Topic: RS EVA VKD-58 - Nauka Radiator filling + deploy - May 12th [Prokopiev, Petelin]  (Read 13923 times)

Online eeergo

Following on the footsteps of the latest two successful Russian EVAs (VKD-56 and -57), which installed the missing major elements on Nauka that were launched with Rassvet during STS-131, the ShK airlock and the RTOd radiator through the help of ERA, this spacewalk will aim to complete major work on the radiator, by filling it with coolant and deploying it to its working configuration in order to support full heat rejection capability in the RS.

The coolant is now contained in Nauka's storage tanks as launched, and will be transferred through a fluid control panel on its side hull.

As a secondary task, while the radiator fills up, they are expected to install a couple of gap-spanners on ERA's main booms to allow for easier EVA access along the arm.
This EVA should complete the major external configuration changes in the RS, in general or until a further expansion (involving NEM?) takes place, except for future external experiment packages and their support structures.

-DaviD-

Offline russianhalo117

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Following on the footsteps of the latest two successful Russian EVAs (VKD-56 and -57), which installed the missing major elements on Nauka that were launched with Rassvet during STS-131, the ShK airlock and the RTOd radiator through the help of ERA, this spacewalk will aim to complete major work on the radiator, by filling it with coolant and deploying it to its working configuration in order to support full heat rejection capability in the RS.

The coolant is now contained in Nauka's storage tanks as launched, and will be transferred through a fluid control panel on its side hull.

As a secondary task, while the radiator fills up, they are expected to install a couple of gap-spanners on ERA's main booms to allow for easier EVA access along the arm.
This EVA should complete the major external configuration changes in the RS, in general or until a further expansion (involving NEM?) takes place, except for future external experiment packages and their support structures.


This is slightly incorrect. They are using an external device called a fuelling aggregate RTOd tank assembly to fill the radiator which will be jettisoned at a later date. After filling the external radiator radiator will be connected via valves to the main Nauka cooling system loop and the valves to the fuelling aggregate RTOd tank assembly will be closed.
« Last Edit: 05/10/2023 05:33 pm by russianhalo117 »

Online eeergo

Following on the footsteps of the latest two successful Russian EVAs (VKD-56 and -57), which installed the missing major elements on Nauka that were launched with Rassvet during STS-131, the ShK airlock and the RTOd radiator through the help of ERA, this spacewalk will aim to complete major work on the radiator, by filling it with coolant and deploying it to its working configuration in order to support full heat rejection capability in the RS.

The coolant is now contained in Nauka's storage tanks as launched, and will be transferred through a fluid control panel on its side hull.

As a secondary task, while the radiator fills up, they are expected to install a couple of gap-spanners on ERA's main booms to allow for easier EVA access along the arm.
This EVA should complete the major external configuration changes in the RS, in general or until a further expansion (involving NEM?) takes place, except for future external experiment packages and their support structures.
This is incorrect. They are using an expendable tank to fill the radiator which will be jettisoned afterwards. After filling it will be connected via valves to the Nauka cooling system loop.

Oh, alright! I was going by the video summary, but perhaps I misinterpreted something? Where's the container now? Isn't it hazardous to have it inside if that's where it is? Did it come up in a Progress?
-DaviD-

Offline russianhalo117

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Following on the footsteps of the latest two successful Russian EVAs (VKD-56 and -57), which installed the missing major elements on Nauka that were launched with Rassvet during STS-131, the ShK airlock and the RTOd radiator through the help of ERA, this spacewalk will aim to complete major work on the radiator, by filling it with coolant and deploying it to its working configuration in order to support full heat rejection capability in the RS.

The coolant is now contained in Nauka's storage tanks as launched, and will be transferred through a fluid control panel on its side hull.

As a secondary task, while the radiator fills up, they are expected to install a couple of gap-spanners on ERA's main booms to allow for easier EVA access along the arm.
This EVA should complete the major external configuration changes in the RS, in general or until a further expansion (involving NEM?) takes place, except for future external experiment packages and their support structures.
This is incorrect. They are using an expendable tank to fill the radiator which will be jettisoned afterwards. After filling it will be connected via valves to the Nauka cooling system loop.

Oh, alright! I was going by the video summary, but perhaps I misinterpreted something? Where's the container now? Isn't it hazardous to have it inside if that's where it is? Did it come up in a Progress?
It was launched mounted externally on a recessed pallet as shown in my PM'd graphic.

Offline centaurinasa

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✨ Today we go into outer space again!
This time it will be difficult to oversleep the beginning of the exit :)
Join the evening "space walk" on May 12 at 18:45 Moscow time! It's a great time to spend it in the company of Roscosmos cosmonauts and the hosts of our broadcast.
Sergey Prokopyev and Dmitry Petelin will have to deploy a radiator on the Nauka module. The planned duration of the work is 6 hours 18 minutes
« Last Edit: 05/12/2023 08:37 am by centaurinasa »
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Offline centaurinasa

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https://www.nasa.gov/press-release/nasa-updates-coverage-of-roscosmos-spacewalks-at-space-station.

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... Friday, May 12
11:30 a.m. - NASA TV coverage begins for a spacewalk to deploy a radiator on Nauka and connect mechanical, electrical, and hydraulic lines.
The spacewalks will be the fifth and sixth for Prokopyev, who will wear the Orlan spacesuit with the red stripes for all of the spacewalks and the third and fourth for Petelin, who will wear the spacesuit with the blue stripes....
To boldly go where no human has gone before !

Offline theonlyspace

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NASA coverage has started

Online eeergo

Poisk now at 12 mm of Hg.
-DaviD-

Online eeergo

Depress completed now, suits on battery power.
-DaviD-

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Turning the handle to open the hatch.
-DaviD-

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Hatch opened, protective ring around seals has been installed.
-DaviD-

Online eeergo

10:47 AM Central was the official start of VDK-58.

263rd overall spacewalk devoted to ISS assembly and maintenance.
-DaviD-

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Both cosmonauts visible outside.
-DaviD-

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Translating nadir to Nauka.
-DaviD-

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Working around the radiator to start opening restraints at its base.
« Last Edit: 05/12/2023 04:20 pm by eeergo »
-DaviD-

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Deploy underway!
« Last Edit: 05/12/2023 04:30 pm by eeergo »
-DaviD-

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Cosmonauts applying a bit extra oomph through a lever handle, just to nudge it from a resistant position, now fully deployed.
« Last Edit: 05/12/2023 04:32 pm by eeergo »
-DaviD-

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Stowing handle so that future EVAers can access and employ it in case of need.
-DaviD-

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Moving to the coolant servicer valves to start the coolant filling.
-DaviD-

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Nice point of view from a helmetcam looking zenith with a full view of the RTOd
-DaviD-

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Coolant servicer valve (still closed) visible after an MLI flap was opened.
-DaviD-

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"Manual valve" (клапан ручной) visible under the valve panel.
Waving to Dextre!
« Last Edit: 05/12/2023 04:43 pm by eeergo »
-DaviD-

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KR (right) valve closed, two KR-1 and KR-2 left valves open (nominal).

Standing by to open the left valve and allow coolant fluid flow.


And left KR valve open!
-DaviD-

Online eeergo

Opening fluid connectors on the zenith worksite now.
-DaviD-

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Fluid connector #11 fully open.

Cosmonauts monitoring fluid connectors (I guess for leaks?). EDIT: Yes, for leaks. Reporting everything dry, no leaks.


Standing by 4 minutes.
« Last Edit: 05/12/2023 04:50 pm by eeergo »
-DaviD-

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Good view of the unencumbered base of the newly deployed RTOd Nauka radiator while it's filling, and the similar-purposed yet much larger TCSS radiators on the USOS truss, including the innocuously delaminated panel.

Also, cosmonaut reflection on a space mirror, also known as heat rejection panel on an ERA end effector ;)
« Last Edit: 05/12/2023 04:55 pm by eeergo »
-DaviD-

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Also awesome views of the Station's underbelly  :o
-DaviD-

Online eeergo

Now opening fluid connector #10 (after having opened #11 and letting the 5 monitoring minutes elapse by).


Funnily, the word гнездо ("nest") is written below... a reference to the USOS' "rat's nest" between Z1 and S0?
-DaviD-

Online eeergo

Connector #10 open, monitoring 5 minutes. The ShK airlock and the ERA, subjects of prior recent VKD spacewalks, now in full view next to Prokopiev and the RTOd radiator in the foreground.
« Last Edit: 05/12/2023 05:01 pm by eeergo »
-DaviD-

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Go to close MLI flaps on the coolant servicer.
-DaviD-

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Everything nominal, so they will move to ERA to install gap spanners along the length of its two main booms, between existing handrails, to aid in future spacewalker translations. Meanwhile, the radiator will keep on filling.
-DaviD-

Online eeergo

Now proceeding with the gap spanner (orange tether with climbing hooks at each end) installation on the first ERA boom.
-DaviD-

Online eeergo

Prokopiev also wire-tying a loose hoop to the hook for eventual future convenience.
-DaviD-

Online eeergo

Good views of the overall worksite. Gap spanner just installed is barely visible (mostly the hook) on the right ERA boom.
-DaviD-

Online eeergo

Right on time. Spacewalkers now taking a break basking in the sun ("feels nice", they commented).

Translating along the circular handrail at the nadir end of Nauka just over the Prichal node. PAO says they will be removing a handrail, but I didn't remember seeing that in the virtual preview video?
-DaviD-

Offline russianhalo117

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Right on time. Spacewalkers now taking a break basking in the sun ("feels nice", they commented).

Translating along the circular handrail at the nadir end of Nauka just over the Prichal node. PAO says they will be removing a handrail, but I didn't remember seeing that in the virtual preview video?
Getahead task

Online eeergo

Handrail reported as free. No Ku coverage to see it in live views.
-DaviD-

Online eeergo

Installing another handrail. Still no Ku.
-DaviD-

Online eeergo

Apparently it's a shortcut spanner connecting Prichal (not Rassvet, the PAO today is pretty clueless and continuously misspeaking, sadly) and Nauka's nadir.

Wondering why the get-ahead task was prioritized over installing the gap spanner between handrails on the other ERA boom... or was that not supposed to happen at all, contrary to the DOUG animation?
« Last Edit: 05/12/2023 05:58 pm by eeergo »
-DaviD-

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Shortcut handrail just installed visible on the lefthand side of the image (silvery rails). Cosmonauts commenting how the area can now accommodate more spacewalkers.
-DaviD-

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Another shortcut handrail going in, on the opposite side of Nauka and Prichal. Experiment airlock visible too, with the ERA grapple fixture extender still attached.


Also with dramatic lighting :)
« Last Edit: 05/12/2023 06:14 pm by eeergo »
-DaviD-

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Recording some GoPro footage.
-DaviD-

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Installation now proceeding. Something is floating away (white speckle to the left of Prichal on the first screenshot).
« Last Edit: 05/12/2023 06:19 pm by eeergo »
-DaviD-

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MCC-M complimenting the spacewalkers, because the current shortcut handrail installation task they're just wrapping up was "a big one" and they completed it in "just one hour".
-DaviD-

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Taking a breather, and going back to the radiator afterwards.
« Last Edit: 05/12/2023 06:28 pm by eeergo »
-DaviD-

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Translating over the airlock's FRGF-to-ERA adapter to avoid going back the (longer) way they came.
-DaviD-

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PAO keeps saying two gap spanners were installed on ERA, but as can be easily seen in this shot, the left boom doesn't have one. Unsure whether they still plan to install it, they forego it for some reason, or the original plan was always to install just one.

EDIT: Yeah, looks like they'll install it now.
« Last Edit: 05/12/2023 06:42 pm by eeergo »
-DaviD-

Offline russianhalo117

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PAO keeps saying two gap spanners were installed on ERA, but as can be easily seen in this shot, the left boom doesn't have one. Unsure whether they still plan to install it, they forego it for some reason, or the original plan was always to install just one.

EDIT: Yeah, looks like they'll install it now.
The PAO is strictly following the provided script with mistakes. The timeline on the Russian broadcast calls for it before or after completing the radiator fill task which is long.. They are ahead of timeline so getaheads for that portion of the timeline were started.
« Last Edit: 05/12/2023 06:47 pm by russianhalo117 »

Online eeergo

Would be nice if she kept an eye on what's happening... she actually sounds pretty bored, if not actually aggravated, by the whole affair, for some reason. She's been stuttering and mispronouncing/misnaming things for 3 hours now  :-X


Anyway, the gap spanner is being extended between the two handrails.
-DaviD-

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PAO keeps saying two gap spanners were installed on ERA, but as can be easily seen in this shot, the left boom doesn't have one. Unsure whether they still plan to install it, they forego it for some reason, or the original plan was always to install just one.

EDIT: Yeah, looks like they'll install it now.
The PAO is strictly following the provided script with mistakes. The timeline on the Russian broadcast calls for it before or after completing the radiator fill task which is long.. They are ahead of timeline so getaheads for that portion of the timeline were started.

I would rather that it be for things going so very well than the alternative, as has often been the case.

Online eeergo

Second gap spanner installed, secured and wire-tied.
« Last Edit: 05/12/2023 06:55 pm by eeergo »
-DaviD-

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Now back to the fluid servicer, working with the valves to complete the coolant filling ops.
-DaviD-

Online eeergo

Looks like valve ops are completed.

Will take about half an hour to integrate the loop. In about 10 minutes they should get confirmation of the circulation working.
-DaviD-

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Reporting no leaks!

"No issues at all, everything is nominal and stable. On the radiator panels, no signs of leaks or anything like that"
« Last Edit: 05/12/2023 07:30 pm by eeergo »
-DaviD-

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Now opening "as fast as you can" fluid connectors on the panel with the ratchet wrench. Some relocation of gap spanner tethers also happening so that they don't interfere with the manual valves.
-DaviD-

Online eeergo

Some sci-fi-worthy shots  8)
-DaviD-

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Integration of the coolant loop has been completed!

Well ahead of the expected timeline and no problems reported, so this should be the (premature, yet happily so) end of the spacewalk.
-DaviD-

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Reporting the status of the fluid complex in order to start cleaning up the worksite.
-DaviD-

Online eeergo

1h ahead of the timeline reported.

All checks completed successfully. MLI flaps closed and worksite cleaned up.

Go to move back to the airlock.
-DaviD-

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Back at Poisk's hatch!
« Last Edit: 05/12/2023 08:17 pm by eeergo »
-DaviD-

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Wiping themselves off with decontamination towels because they were close to thrusters and propellant deposits during their work today.

Instructed to bundle all used towels together with a wire tie and jettison them in the same direction they threw away the airlock MLI the other day in VKD-57.

Go to close hatch!
-DaviD-

Offline centaurinasa

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https://twitter.com/RussianSpaceWeb/status/1657129215458701312?cxt=HHwWgMCzpbuPp_8tAAAA

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Hatch closed, completing the VKD-58 spacewalk after 5 hours 14 minutes 57 seconds...
To boldly go where no human has gone before !

Offline centaurinasa

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And "the numbers".
To boldly go where no human has gone before !

Offline centaurinasa

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https://twitter.com/Space_Station/status/1657131427589156865?cxt=HHwWgsCz-ZyQqP8tAAAA

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Cosmonauts Sergey Prokopyev and Dmitri Petelin completed the sixth spacewalk of the year at 5:01pm ET today after deploying and activating a radiator on the Nauka science module.
To boldly go where no human has gone before !

Offline centaurinasa

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That conclude three successful VKD  to outfit the MLM Nauka !
And... thanks to eeergo for his amazing coverage !  8)
To boldly go where no human has gone before !

Offline centaurinasa

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The spacewalk is complete!
Sergey Prokopyev and Dmitry Petelin closed the exit hatch of the Poisk module at 00:01 Moscow time on May 13. The cosmonauts worked on the outer surface of the ISS for 5 hours and 14 minutes.

During the release, the following tasks were completed:

▪️ the radiator panels on the laboratory module "Nauka" were opened;
▪️ radiator circuits are filled and combined with Nauka support systems;
▪️ two gap spanners were installed on the ERA manipulator;
▪️ two handrails were installed between the modules "Nauka" and "Prichal".
...
« Last Edit: 05/12/2023 09:23 pm by centaurinasa »
To boldly go where no human has gone before !

Offline Lewis007

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Offline SMS

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

Offline space_19771999

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NASA photos.

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