On: SpaceX SN9 Explodes on Landing

[avmich]

> It has a greater ratio of thrust to weight than any previous engine.

SSME thrust-to-weight ratio: 73.1 https://en.wikipedia.org/wiki/Space_Shuttle_Main_Engine

NK-33 thrust-to-weight ratio: 137 https://en.wikipedia.org/wiki/NK-33 (no gimbaling)

RD-270 thrust-to-weight ratio: 189.91 https://en.wikipedia.org/wiki/RD-270