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Re:SpaceX Soft Lands Falcon 9 Rocket First Stage by Crito on Tuesday July 22, 2014 @09:07PM (#8072419)
I wouldn't say that. SSTO's are pretty trivial in KSP (even rocket SSTO's with only classical chemical engines, none of the RAPIER/SABRE stuff).

8 Rockomax 48-7S (little orange engine, stuck on with 8 small cube struts) + 1 Rockomax X200-32 Fuel Tank (the large gray tank, one size below the big orange tank) will put a capsule in orbit around Kerbin pretty easily. No such luck in real life.

Typically KSP engines have worse performance than real engines, but Kerbin is pretty small.

Re:SpaceX Soft Lands Falcon 9 Rocket First Stage by m_mueller on Tuesday July 22, 2014 @10:48PM (#8072675)
> 8 Rockomax 48-7S (little orange engine, stuck on with 8 small cube struts) + 1 Rockomax X200-32 Fuel Tank (the large gray tank, one size below the big orange tank) will put a capsule in orbit around Kerbin pretty easily. No such luck in real life.

That's what I meant by 'the opposite is not necessarily true'. My argument was that if something does not work in KSP, it probably won't work in real life (which was refuted by another commenter because of missing Lagrange points). IMO it still holds true for basic rocket designs and their capabilities for LEO / GEO. To my knowledge, all real world rocket designs have been replicated in-game (albeit with much lower complexity of course) and demonstrated to work.