Cygnus technical data/mass breakdown

[Guest]

Does anyone know how is the mass on Cygnus spacecraft distributed? I'm mostly interested in propellant load and PCM/SM mass. I know the "main engine" is the IHI BT-4 (450n, 4kg), but I've got no info on the rest of the RCS system. I've managed to spot 4 blocks on the front, but that's all (and no data at all on its strength). Also, the GEOStar bus description indicates that only the main engine uses bipropellant, and the RCS is hydrazine monoprop. Could that also be the case with Cygnus?

Edited November 23, 2014 by Guest

[Scarsz]

I found data for the cygnus Pm and and Sm masses when I was making my own RO configs. I can dig it up for you tomorrow. I didnt find any info on RCS though, but its a safe assumption to say that the rcs is hydrazine and the IHI-BT is a hypergolic bipropellant.