2 ms·
And considering they use four identical boosters for each, that's 60 to 80 cores per year. More than one per week. If they move to RD-193 engines that are used
by Gravityloss 11y ago
And considering they use four identical boosters for each, that's 60 to 80 cores per year. More than one per week. If they move to RD-193 engines that are used by the Americans as well, even more economies of scale.
Encyclopedia Astronautica posits that the Soyuz design is a multicore version of the German-designed Gröttrup G4.
http://www.astronautix.com/lvs/g4.htm http://www.astronautix.com/lvs/g4.htm