Too much detail to go into here, follow the links:

http://commercialspace.pbworks.com/f...M%20small.pptx

http://commercialspace.pbworks.com/f...20Propulsion%2
0small.pptx



Discusses Raptor upper stage and engine, Merlin 2 engine, Falcon X and
Falcon XX, which is a tad larger and more powerful than the Saturn V,
and technology for manned deep space exploration.


--Damon