Alright, before I post this I have a little disclaimer: I like to think I know rocket science stuff, but deep down I'm really an idiot - so bear with me on this one. So, the Oberth Effect essentially means that the faster your spacecraft goes, the more speed you gain from a burn? (I think that's what it means anyway) You start your journey far away from the Sun, around Pluto, and you began to travel towards the Sun to the minimum Periapsis possible without melting your spacecraft, and then burn about 1/5th of your fuel (Hypothetically, we have a lot of fuel. It's not infinite though.) to perform an Oberth maneuver to escape the solar system. When you escape the solar system and you have a minimal amount of gravity acting on your spacecraft, you burn the rest of your fuel prograde to get to FTL, because you are getting faster and therefore your burn is increasing your speed exponentially. (Once again, we hypothetically have enough fuel to do this.) So, I guess what I'm asking is this possible, and if not, why? Thanks for reading this, I hope you didn't loose too many IQ points.