Big leap in Space Defence Technology: Green Propulsion System, developed under DRDO’s Technology Development Fund, successfully demonstrates in-orbit functionality

Developed under the Technology Development Fund (TDF) scheme by DRDO, a Green Propulsion System has successfully demonstrated its in-orbit functionality during the PSLV C-58 mission. Executed by Bengaluru-based startup Bellatrix Aerospace Pvt Ltd, the project involves a 1N Class Green Monopropellant thruster designed for microsatellite attitude control and orbit maintenance.

Telemetry data from the PSLV Orbital Experimental Module (POEM) at ISRO Telemetry, Tracking, and Command Network (ISTRAC) in Bengaluru has been validated, surpassing all performance parameters. This environmentally friendly propulsion system utilizes an indigenously developed propellant, valves, catalyst bed, and electronics, making it suitable for space missions with high thrust requirements. The entire project, guided by DRDO's Project Monitoring & Mentoring Group, has demonstrated various functionalities, including pulsed mode and steady-state firing in a vacuum, passivation of residual propellant in outer space, and propellant realization. The Technology Development Fund, a Ministry of Defence flagship program executed by DRDO under the 'Make in India' initiative, supports innovation in defense and aerospace, particularly for startups and MSMEs.

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