They had insulation and active stirring system, that was enough for 15-20 days. To fly up to 30 days they needed a microcryocooler.
http://buran.ru/htm/odu.htm
> Crew Dragon can be rated for hundreds of days
Isn't Soyuz rated for 200+ days?
> Dreamchaser with its propane/N2O thruster is a better counterexample.
Agree, a good example.
They had insulation and active stirring system, that was enough for 15-20 days. To fly up to 30 days they needed a microcryocooler.
http://buran.ru/htm/odu.htm
> Crew Dragon can be rated for hundreds of days
Isn't Soyuz rated for 200+ days?
> Dreamchaser with its propane/N2O thruster is a better counterexample.
Agree, a good example.