Rudra green propulsion
A chemical thruster system that uses a greener monopropellant instead of hydrazine, with tanks, valves, propellant and catalyst made in-house by Bellatrix.
Why it matters
Hydrazine, the usual satellite thruster fuel, is toxic and needs special handling. A greener propellant makes satellites safer to fuel.
How the technology works
A monopropellant thruster passes a single liquid over a catalyst, which breaks it down into hot gas that exits a nozzle. The 1 N version fired for 60 seconds in orbit on ISRO's POEM-4 platform, reported in January 2025, and turned the platform about 80 degrees.
Sources
Updated Oct 22, 2026 · How we source facts · Suggest a correction