“We are currently scheduled to have that [the T5] go online towards the end of this year," Babione said. "So that will be another significant leap in capability and towards demonstrating that the physics underlining our concept works."
By 2017, that schedule had gotten pushed back to sometime in the mid-2020s. In his interview with Aviation Week, Babione did not offer any more of a specific timeline for when a practical reactor, which the company refers to as TX, might be ready.