So 1.2 mN/kW. By comparison the ion engine on the Dawn probe puts out 34 mN/kW (236mN / 6.9 kW). But of course that's for an effectively infinite exhaust velo

So 1.2 mN/kW. By comparison the ion engine on the Dawn probe puts out 34 mN/kW (236mN / 6.9 kW). But of course that's for an effectively infinite exhaust velocity rather than just 42 km/s.