Hello. I'd like to know how, exactly, the specific impulse system works. I'm not fammiliar with rocket science (I just mash a bunch of SRBs toguether, put a parachute and tie it all toguether with struts) so I'd like an explanation in layman's terms. Anyways yeah, how does the specific impulse system work?
That's pretty much it. I used google, the wiki and the forum search feature to no avail. If anyone could help me I'd appreciate it!