Main Engine Cut Off


Awkward and clunky. The name isn’t great, either.

Seriously, though, it’s an otherwise cool name styled in the worst possible way. Going with two RL10 engines for the upper stage is…interesting. They obviously wanted to go all-American in the propulsion department for political reasons, but the cost side gets confusing.

I’d really love to know what a single RL10 costs these days.