Author Topic: RS EVA VKD-58 - Nauka Radiator filling + deploy - May 12th [Prokopiev, Petelin]  (Read 13909 times)

Offline 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 »

Offline 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 »
To boldly go where no human has gone before !

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

Offline eeergo

Poisk now at 12 mm of Hg.
-DaviD-

Offline eeergo

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

Offline eeergo

Turning the handle to open the hatch.
-DaviD-

Offline eeergo

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

Offline eeergo

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

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

Offline eeergo

Both cosmonauts visible outside.
-DaviD-

Offline eeergo

Translating nadir to Nauka.
-DaviD-

Offline eeergo

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

Offline eeergo

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

Offline eeergo

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-

Offline eeergo

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

Offline eeergo

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

Offline eeergo

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

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