The barrier was never technical
Lukas Werling spent six years as a propulsion systems engineer at a German aerospace research institute, observing a consistent pattern: every NewSpace startup that attempted to source flight-qualified in-space propulsion for small satellites encountered the same bottleneck. The only available green options were either research-grade with no production history, or legacy units priced for geostationary programs costing ten times what a small satellite bus was worth.
The barrier was not technical. Green propellant chemistry was mature and the ECSS qualification framework was well-understood. The barrier was manufacturing philosophy. Incumbent propulsion suppliers built systems to government prime contractor lead times and pricing models — bespoke, heavily documented, chronically late.
A purpose-built small satellite propulsion manufacturer applying industrial batch production methods to a flight-qualified architecture could undercut incumbents on cost and lead time without sacrificing technical readiness level.
Lukas and co-founder Dr. Annika Haas — formerly of DLR's propulsion combustion research group — developed a green monopropellant thruster prototype at the Lampoldshausen test facility. A twelve-month hot-fire characterization campaign produced a qualification data baseline sufficient for mission-heritage classification on an ESA-funded technology demonstration mission.
ISPTech now offers a product line of modular green propellant thrusters from 0.5N to 20N, manufactured at their Lampoldshausen facility with batch production capability targeting constellation operators and commercial small satellite integrators worldwide.
