VACUUM ISP. I really don't know at this point if you're trolling on purpose or if you've been simply cognitively challenged since birth. 334 s is a sea-level figure that has nothing to do with my claim about VACUUM ISP.
Yeah, it's true...the things that bite you are the things you don't anticipate. On the N-1, they only found in a test flight that shutting down six engines at once to limit the g-forces creates a hydraulic shock that ruptures the fuel lines. Well, that's too late to find out about something like that!