Following on his initial discovery of sustainable fusion power, there were several technologies Heisson set about developing in parallel in the early 22nd century through Heisson Aeronautics and its subsidiaries.
All of these technologies were a necessary step required in order to support Heisson's vision of developing jump drive.
*NOTE*: The original timeline of the Living Steel universe has been modified to better suit a long-running book series.
Posting by Mr. Beak to the Phoenix Command mailing list on groups.io from April 15, 2018.