Hey guys, just had a quick question. Why do all probes/satellites (particularly early ones) seperate from the final stage of their carrier rocket once they reach the proper trajectory/orbit? And, is do any of those reasons matter in KSP?
I've always done it, but I have no idea why. I guess just because that's what I've always seen them do. In early career though, when trying to save every buck per launch, why ever bother? Those TR-18A stack decouplers are $400 each, which I could spend on another RT-10 instead = more dV/$.
Does everybody do integrated upper stages and I'm just late to the party? I'm also talking about stock here, but what about RSS/RO? Does that change the equation a lot?
Thanks!