That was what I was thinking. RD-58's about 2/3rds the mass, a third of the thrust, and the 4th stage for some Proton boosters. RD-0210 is 300 pounds
heavier, but almost double the thrust, and the 2nd stage for almost all Proton boosters.
But this is me having gone and poked around a lot. I realize it doesn't really *MATTER* because it's being handwaved, but...![[Image: wink.gif]](http://www.ezboard.com/intl/aenglish/images/emoticons/wink.gif)
heavier, but almost double the thrust, and the 2nd stage for almost all Proton boosters.
But this is me having gone and poked around a lot. I realize it doesn't really *MATTER* because it's being handwaved, but...