>>13431287>NTR will never work in a timeline with raptorsIt will for the outer system. Chemical takes too damned long for manned transfers to the gas giants.
>>13431299>I wasn't referring to the physical limitations of exhaust velocity, but how much power would this require?Not as much as you think. Pulsed NTR gets its Isp boost from self quenching fuel elements that dump a gorillion neutrons into the propellant on each pulse. Water would work exceptionally well for this compared to LH2 so I might be lowballing the Isp.
