I think sending a reactor to mars is making the same mistakes again. Elon is sure that the energy of the sun is the energy of the future and that is what i think. By the way there are other easier ways to use the sun than "only" producing electrical energy: what about using the thermal energy (efficiency over 90%).
Can anyone tell me which constant power (in kW) it needs to reduce the travel-time to mars by 10%, 25% or 50% let's say for a 100t spaceship (without loss of weight by the propulsion).
ok - that's right - i just want to get a feeling for the power needed. If you want let's say 20t at mars.