Quote from: sdsds on 04/20/2021 01:16 am...And the Service Module (Zvezda) is where the presumed leak is located? So how many wires would need to be manually cut to jettison Zvezda and everything aft of there from the US segment?It just doesn't seem realistic to me that NASA could operate Zarya without Russian support and parts, even if they do own it. If they're going to let Russia walk away, they should ditch Zarya, too, and completely end the Russian dependency, IMO.
...And the Service Module (Zvezda) is where the presumed leak is located? So how many wires would need to be manually cut to jettison Zvezda and everything aft of there from the US segment?
Quote from: Bob Shaw on 04/19/2021 07:03 pmOnly Progress can reboost and refuel the ISS. When Progress ceases to be available, or looks like being unavailable soon, that's the end of the ISS - it will have to be deorbited.Wrong, see PPE
Only Progress can reboost and refuel the ISS. When Progress ceases to be available, or looks like being unavailable soon, that's the end of the ISS - it will have to be deorbited.
Quote from: russianhalo117 on 04/19/2021 08:23 pmThe final inclination selected for CSS prevents Russian involvement without taking prohibitive mass penalties.Wait, really?
The final inclination selected for CSS prevents Russian involvement without taking prohibitive mass penalties.
Quote from: russianhalo117 on 04/19/2021 08:23 pmThe final inclination selected for CSS prevents Russian involvement without taking prohibitive mass penalties.Wait, really?I'm a bit curious on this statement as well, could someone clarify this.
However CSS will have at least one back up for core module and lab each, so it is still possible to make some contribution in ROSS.
CSS uses a 42 deg inclination orbit, lower than the latitude of any Russian/Pre-USSR cosmodromes.
Quote from: soyuzu on 04/20/2021 07:12 amCSS uses a 42 deg inclination orbit, lower than the latitude of any Russian/Pre-USSR cosmodromes.Do we know the reason why they chose that inclination? Or what's the significance of it?
Quote from: soyuzu on 04/20/2021 07:12 amHowever CSS will have at least one back up for core module and lab each, so it is still possible to make some contribution in ROSS.I'm a bit unfamiliar with this area, why does having a back up help for Roscosmos? What does ROSS stand for?
So assuming Russia goes ahead with the pullout, what should US do:1. Should US abandon ISS and bet everything on Axiom (or other commercial station provider)?2. If US wants to save ISS after Russian pullout, how to do it (2024 version)?
Quote from: strkiky on 04/20/2021 07:10 amQuote from: russianhalo117 on 04/19/2021 08:23 pmThe final inclination selected for CSS prevents Russian involvement without taking prohibitive mass penalties.Wait, really?I'm a bit curious on this statement as well, could someone clarify this.CSS uses a 42 deg inclination orbit, lower than the latitude of any Russian/Pre-USSR cosmodromes.
Quote from: soyuzu on 04/20/2021 07:12 amQuote from: strkiky on 04/20/2021 07:10 amQuote from: russianhalo117 on 04/19/2021 08:23 pmThe final inclination selected for CSS prevents Russian involvement without taking prohibitive mass penalties.Wait, really?I'm a bit curious on this statement as well, could someone clarify this.CSS uses a 42 deg inclination orbit, lower than the latitude of any Russian/Pre-USSR cosmodromes.Why is that prohibitive? 10-20 degree inclination changes happen all the time.
Not clear from the discussion if Russian segment is to be physically detached from the US segment. If so, would this be done from the Russian interface to the PMA, or the US interface (Unity)? What would be used to impart motion to the Russian segment to drift clear of the US segment? Probably a more complex operation than it seems since the ISS was not designed for such and event.Boeing has been conducting studies on ISS life extension. Won't matter if the Russian segment becomes dead weight well before then. This could be messy.
Russia's space agency said Tuesday it hoped to launch its own orbital station in 2025 as Moscow considers withdrawing from the International Space Station programme to go it alone.Roscosmos chief Dmitry Rogozin said work had begun on the fist module of a new station, after officials warned that Russia was considering pulling out of the ISS, one of the few successful examples of cooperation with the West.
Still no official announcement of Russian withdrawal from ISS in 2025, but here’s the Roscosmos chief teasing construction of a module to be used as the core of a new Russian station in 2025. This module actually was commissioned for ISS in 2024.Rogozin later explained that Russia isn’t talking about de-orbiting its ISS modules in 2025, but rather a gradual withdrawal from the project over time.But still no official anything, even though all signs indicate Russia really is tapping out.Maybe they’re saving the official announcement for Putin’s big speech tomorrow. If I was the writer of this timeline thats how I’d do it.