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India's Private Space Race Heats Up
Agnikul Cosmos has achieved a major milestone, successfully test-firing four of its 3D-printed semi-cryogenic rocket engines simultaneously. The Chennai-based startup announced the breakthrough on Tuesday, highlighting its rapid progress in developing proprietary launch vehicle technology. This coordinated firing is crucial for scaling thrust required for orbital missions, particularly for the small-satellite market Agnikul targets with its Agnibaan rocket.
In-House Innovation Drives Progress
The four engines, developed and manufactured in-house at Agnikul's Rocket Factory-1, are constructed as single, 3D-printed pieces. Powered by electric motor-driven pumps, the test involved precisely calibrating eight pumps, eight motors, and associated speed-control algorithms to ensure uniform startup, stable operation, and controlled shutdown across the system. Agnikul stated this represents India's first known semi-cryogenic cluster test of this complexity.
This achievement builds upon previous successes, including a three-engine cluster test conducted in February 2026. Agnikul's propulsion architecture centers on its single-piece 3D-printed engine, named Agnilet, which boasts a thrust capacity of 6.2 kilonewtons. The company, founded in 2017 by Srinath Ravichandran, Moin SPM, and S. R. Chakravarthy at IIT Madras, emphasizes rapid engine production and modularity to reduce launch costs.
Funding Fuels Ambition
Agnikul has secured substantial funding to support its development. Previous investment rounds include an $11 million Series A in March 2021 and a $26.7 million Series B in October 2023. A significant $17 million Series C round in November 2025, valuing the company at $500 million, was followed by a $2.65 million investment from Tamil Nadu's TIDCO in March 2026. Agnikul is reportedly in early discussions to raise an additional $50 million to $75 million in a Series C extension to scale its production capabilities.
The successful four-engine cluster test solidifies Agnikul's position as a leading private space startup in India, backed by collaborations with IIT Madras, ISRO, and IN-SPACe. If this system proves flight-ready, it will significantly enhance Agnikul's competitive edge in the burgeoning global small-satellite launch market.