4 ms·
how does this compare to Space-X Raptor engines ?
by je42 9y ago
how does this compare to Space-X Raptor engines ?
- lutorm 9y agoRaptor is a conventional chemical rocket engine. The thrust is much higher (of order 1 million N vs 5N) but the specific impulse is much worse so your ability to reach speeds is limited by the amount of propellant you need to carry.
- foxyv 9y agoTypically hall effect thrusters have an ISP of 1600 while Raptors have an ISP of 375 in a vacuum. In a cost benefit analysis this is what makes electric propulsion sensible for long term missions. Otherwise their low thrust and heavy weight (Thruster and electrical generator) would make them unappealing.