What if you had a oxygen pack in the rocket that released oxygen in the rocket at the time of firing ^^
Its the bigger picture we're looking at here... this game is obviously detailed and grounded in its realistic portrail of modern warfare and if there was to be a "space" setting we'd like to see that attention to detail followed through, not some slapdash; here's some space like effects and a "fun" game. Acurate simulation is required.
So no "packs" of fuel for rockets dont cut the mustard as they'd have way of burning once they left the chamber.... Physics at A level aparently is getting easier. :p
Oxygen inside the rocket in a controlled release cylinder is what I said (i never said anything about the chamber, which could always be powered by an RTG if you want to make this advanced, inspired by Metal Storm weapons of course), if you lack oxygen in the atmosphere of space you can just provide it, fuel + oxidant = success! It wouldn't just release the oxygen all at once...
durr