3 ms·
BA-810 (by a SpaceX predecessor, huge cheap engine!), Fastrac, RS-68, XRS-2200, TR-106, to name a few. These are only large liquid fuel engines created from scr
by orbital-decay 4y ago
BA-810 (by a SpaceX predecessor, huge cheap engine!), Fastrac, RS-68, XRS-2200, TR-106, to name a few. These are only large liquid fuel engines created from scratch which either flew or have been fully tested in the US in a decade before the Merlin-1A. There were many more solids, derivatives, small engines, upper stage engines etc.