/sci/ - Science & Math

Fusion powered SSTO when?

Can stargates ever be a legitimate thing for FTL?
>Build gate in solar system
>Send out spacecraft to nearest star system
>Arrives 80-100 years later and builds second end
>Humans now have instant access to new star system
>Rinse repeat until entire galaxy is conquered

I have a thread up on /k/ about this that focuses a bit more on the tactics and strategy to the utilization of space fighters in a realistic space combat situation.
>>43849833
For this thread, I'd like to focus a bit more on the actual science behind a space fighter rather than the tactics. Would you be able to create a practical space fighter without it being over sized and over burdened? What weapon systems could be utilized and which ones would realistically require more radiators that would be bigger than the spacecraft itself?