Author Topic: TKS-FGB and propellant transfer ?  (Read 951 times)

Offline Archibald

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TKS-FGB and propellant transfer ?
« on: 04/26/2018 07:14 PM »
Simple question. First space prop transfer was done in January 1978, when a Progress refueled Salyut 6.

did the TKS - more exactly its FGB - had a similar capability ?

 I mean, could a TKS-FGB transfer propellants to a Salyut or an Almaz  or even Mir ? Was it ever atempted ?

Thank you !
« Last Edit: 04/26/2018 07:15 PM by Archibald »
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Offline Jim

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Re: TKS-FGB and propellant transfer ?
« Reply #1 on: 04/26/2018 07:53 PM »
Simple question. First space prop transfer was done in January 1978, when a Progress refueled Salyut 6.

did the TKS - more exactly its FGB - had a similar capability ?

 I mean, could a TKS-FGB transfer propellants to a Salyut or an Almaz  or even Mir ? Was it ever atempted ?

Thank you !


Propellant is stored in the FGB on ISS as reserve.  It can go from the Progress into the SM to the FGB and back to the SM.  At least early in the ISS lifetime.

Offline Zero-G

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Re: TKS-FGB and propellant transfer ?
« Reply #2 on: 04/26/2018 10:28 PM »
Simple question. First space prop transfer was done in January 1978, when a Progress refueled Salyut 6.

did the TKS - more exactly its FGB - had a similar capability ?

 I mean, could a TKS-FGB transfer propellants to a Salyut or an Almaz  or even Mir ? Was it ever atempted ?

Thank you !
There were three TKS modules that were docked to Salyut stations: Cosmos 1267 with Salyut 6, Cosmos 1443 and 1686 with Salyut 7. They had no capability for prop transfer to Salyut.
Also, they were all docked to the front port of their respective Salyuts, which was not equipped for prop transfer anyway. The necessary plumbing and connections were only in the rear port.
« Last Edit: 04/26/2018 10:30 PM by Zero-G »
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Offline Archibald

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Re: TKS-FGB and propellant transfer ?
« Reply #3 on: 04/27/2018 05:14 AM »
Thank you. So prop transfer remained Progress business, not TKS, which makes some sense: Progress and its launcher were far less expensive, they worked well, and had enough performance by themselves.
« Last Edit: 04/27/2018 05:15 AM by Archibald »
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Offline Michel Van

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Re: TKS-FGB and propellant transfer ?
« Reply #4 on: 04/27/2018 06:00 PM »
my question on that
was prop transfer planed between ALMAZ and TKS ?
or would TKS perform several engine burns in rising ALMAZ orbit ?

Offline Archibald

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Re: TKS-FGB and propellant transfer ?
« Reply #5 on: 04/28/2018 07:41 AM »
No refueling, but cosmos 1686 boosted salyut 7 to 300 miles
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Offline Archibald

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Re: TKS-FGB and propellant transfer ?
« Reply #6 on: 04/28/2018 07:44 AM »
Does anybody knows the tks-fgb pressurised volume ? I've seen 40 to 60 cubic meters. Not the iss fgb but the original tks fgb.
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Offline Michel Van

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Re: TKS-FGB and propellant transfer ?
« Reply #7 on: 04/28/2018 08:55 AM »
According Anatoly Zak Webpage
The TKS spacecraft had a pressurized volume of 49.88 cubical meters.
http://www.russianspaceweb.com/tks.html

Offline Archibald

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Re: TKS-FGB and propellant transfer ?
« Reply #8 on: 04/28/2018 11:44 AM »
With the VA, probably, so minus 8.37 cubic meters it should be around 41 cubic meters, and this matches the date from another website (41)
 https://falsesteps.wordpress.com/2016/08/23/tks-chelomeis-soyuz/
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