Portal Space Systems successfully tests Flare HEX solar thermal thruster, first commercial STP demo enabling multi‑orbit Supernova maneuvers

Portal Space Systems successfully tested its 3D‑printed Heat Exchanger (HEX) Thruster, Flare, in vacuum at operational temperatures — the first commercial demonstration of a solar thermal propulsion system that uses storable ammonia to enable rapid multi-orbit transfers for its Supernova spacecraft.

JJeff Thornburg