An overview is given on the important discoveries made since 1986 in the engineering design of space fusion propulsion plants. These discoveries allowed the optimization of an earth-based fusion-electric magnetic-mirror-fusion reactor concept for propulsion in space. The resulting design is called the Mirror Fusion Propulsion System (MFPS).
Carpenter, S. A., & Brennan, K. M. (1999). Overview and status of a mirror fusion propulsion system design study. Acta Astronautica, 44(7), 471–506. https://doi.org/10.1016/S0094-5765(99)00082-X