Della

Hey there. New user here. ...actually i'm almost at the end of KSPI, just have to unlock the Alcubierre. But, hey, it's the first time I post Actually, it's to ask about some stuff that i was wondering about. After trying around some rockets, it seems like the for large ships the DT Vista beats anything. even at top throttle, it has decent thrust and an ISP that's pretty much unbeatable by anything that's not AM. Am I right in assuming that, barring AM, the Vista is THE large ship engine? Or am I overlooking some way of using the rocket nozzles creatively? I mean, I guess their advantage is versatility of propellant (liquid, LFO, etc), but is there something more to them that I'm missing? Of course I'm not talking about small ships, the 2.5GW requirement for the Vista pretty much kills it in that regard. And: to get Helium-3, you have to actively breed Lithium into Tritium, or just leaving a stock of Tritium to decay somewhere is enough?