Agnikul Test-Fires World's Largest 3D Printed Rocket Engine Built in Just 7 Days

Indian space startup Agnikul Cosmos has achieved a major breakthrough in rapid rocket manufacturing, successfully test-firing "Agnite," the world's largest single-piece 3D-printed booster engine.

7 Days vs. 7 Months

Traditional rocket engines take approximately seven months to manufacture, involving extensive machining, welding, and assembly of hundreds of components. Agnikul's approach eliminates these complexities entirely—the Agnite engine is printed as a single piece in just seven days, representing a 90-97% reduction in production time.

"We chose single-piece Inconel construction and electric pump architecture specifically to solve our customers' scheduling problems and enhance automation of engine manufacturing," said Srinath Ravichandran, Co-founder and CEO of Agnikul Cosmos. "Traditional engines take months to build because you're machining, welding, and assembling dozens of parts. Ours prints in a few days."

Technical Details

The Agnite engine measures approximately one metre in length and is built entirely as a single-piece Inconel structure—a high-performance alloy designed to withstand extreme temperatures. The engine also incorporates electric motor-driven pumps, a departure from conventional gas-generator systems.

Moin SPM, Co-founder and COO, stated: "Unlike traditional engines that take seven months to manufacture, Agnikul's engines can be fully 3D printed in just seven days. This dramatically reduces production complexity, turnaround time, and costs. The costs will be one-tenth of what they are now."

Market Impact

The successful test positions Agnikul to support multiple launches per quarter, with the small satellite launch market projected to exceed $60 billion by 2030. The company is valued at over $500 million following recent funding rounds.

This breakthrough could allow satellite operators to secure more predictable schedules and tailor orbital deployments more precisely—capabilities often missing in shared launch arrangements.