Agnikul test-fires first-of-its-kind 3D-printed booster engine

Agnikul Cosmos successfully test-fires a revolutionary 3D printed booster engine, enhancing launch efficiency and scalability in space transportation.

Chennai-headquartered Agnikul Cosmos, an end-to-end space transportation company, has successfully completed a critical booster engine test of its engine – Agnite.

Unlike traditional engines that take several months to manufacture, Agnikul’s engines can be fully 3D-printed in just seven days. This reduces production complexity and turnaround time.

The tested engine is a full metre long – the largest Inconel rocket engine ever built as a single piece and the first of its scale to be tested with electric motor-driven pumps. Validated at Agnikul’s in-house test facility in Chennai, the system reflects a focus on scalable, high-performance engineering designed to support faster launch readiness and consistent execution.

Through this innovation, the space tech startup now operates a fully integrated launch ecosystem, in-house mission control, dedicated ground stations, and flight-proven propulsion systems.

“We chose single-piece Inconel construction and electric pump architecture specifically to solve our customers’ schedule problem and enhance automation of engine making. Traditional engines take months to build because you’re machining, welding, and assembling dozens of parts. Ours prints in a few days, which means we can respond to launch demand faster than the industry standard,” said Srinath Ravichandran, co-founder and CEO of Agnikul Cosmos. 

“Electric pumps are simpler than gas generators, fewer parts to refurbish between flights, which is critical for our reusability roadmap. These aren’t just technical choices but are the reasons why we can commit to low turnaround and actually deliver on it,” he added.