These kinds of engines get about double the exhaust velocity of high efficiency conventional rockets. (A hydrolox engine like that used on the space shuttle or the centaur upper stage getting an exhaust velocity of about 4500 m/s and a nuclear thermal getting about 8000m/s)
These kinds of engines get about double the exhaust velocity of high efficiency conventional rockets. (A hydrolox engine like that used on the space shuttle or the centaur upper stage getting an exhaust velocity of about 4500 m/s and a nuclear thermal getting about 8000m/s)