I am looking for a powerful propulsion system for deep space missions. I am between a powerful ionic motor or a VASIMIR (variable specific impulse magnetoplasm motor). What do you think? The idea would be to go from LEO to Titan (Saturn moon). The duration of the mission should not exceed 8 years.
It took the Cassini probe 8 years to land Huygens on Titan, but I need to land something much smaller, so I hope to have a faster mission with my less massive payload. I have to land a load of 15 to 35 kilograms. What do you recommend? Is there a more viable alternative?