Ship nuclear engine problems

[Karst]

Not sure what the law says about it but Deuterium and Helium-3 rather sound like fusion generators than fission generators. That would make more sense aswell, I guess, since Fusion Generators should be more advanced and useful than fission ones. But then again, I could be wrong.

Well I cannot disagree with that cause I don't have slightest idea how fusion works

Fusion is the opposite of fission, the nuclear reaction used in current nuclear power plants (and most nuclear weapons).
Fission, that is breaking up large nuclei, releases energy because the larger a nucleus, the larger the electromagnetic force that pushes the nucleus' protons apart relative to the strong nuclear force that keeps nucleons together (because the electromagnetic force has greater range than the strong nuclear force and thus increases with the number of protons in a nucleus).
Inversely, fusion (fusing nuclei together to form a heavier element) creates energy because the strong nuclear force dominates relative to electromagnetic repulsion when dealing with small nuclei.
Thus, the larger a nucleus, the less energy is required for fission, and the smaller a nucleus, the less energy is required for fusion (and vice versa). This balance reaches the center somewhere around nuclei the size of iron, which essentially doesn't release energy by either fusion or fission.
Fusion reactors in freelancer therefor use small nuclei in the form of H-fuel (H-2 and He-3) while fission reactors use MOX (Uranium and Plutonium).

But aside from all of that, it's a sci-fi game. Don't try to bring too much actual science into it.

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