DARK propulsion system
Arkadia's satellite propulsion system using high-concentration hydrogen peroxide, which gave about 5 newtons of thrust in its first in-orbit test.
Why it matters
Hydrazine is toxic, so fueling a satellite needs hazmat suits and special facilities. A peroxide system that performs similarly cuts that handling cost.
How the technology works
Hydrogen peroxide flows over a catalyst, decomposes into hot steam and oxygen and exits through a nozzle. Arkadia tested the system on a D-Orbit ION satellite carrier launched in March 2025, and Payload reports the flight unit produced 5 N of thrust.
Sources
Updated Oct 22, 2026 · How we source facts · Suggest a correction