Spacetech startup Agnikul Cosmos has examined Agnite, a booster engine it says might be totally 3D printed in seven days at one-tenth the price of typical manufacturing.
One metre lengthy and 3D printed from Inconel as a single piece, Agnite is powered by electrical motor-driven pumps and was examined on the firm’s facility at IIT Madras Analysis Park in Chennai. The engine is constructed as an built-in construction operating from gas inlet to exhaust with out welds, joints, or fasteners, and Agnikul holds a US patent for the design. It’s the nation’s largest single-piece Inconel rocket engine and the primary of its scale to be examined with electrical pump structure.
Constructed Round Operational Effectivity
As a result of the engine prints as one steady piece, it bypasses the machining, welding, and multi-component meeting that makes typical engine manufacturing so time-consuming.
The spacetech startup has additionally chosen electrical pumps over fuel turbines, which carry fewer shifting elements and require much less refurbishment between flights, a sensible consideration for an organization that has reusability on its roadmap. In the meantime, clients could make payload modifications as much as 30 days earlier than a scheduled launch.
Agnite follows two different propulsion milestones in fast succession. Final month, Agnikul fired three semi-cryogenic engines concurrently in synchronisation, which the corporate says is the primary such check carried out in India.
Each construct on the inspiration laid by the Agnibaan SOrTeD mission in 2024, India’s first managed flight from a personal launch pad at Sriharikota and the nation’s first flight powered by a semi-cryogenic engine.
Past propulsion, Agnikul operates its personal mission management, floor stations, and manufacturing facility, alongside patents in Europe, and India protecting propulsion methods, convertible upper-stage structure, and orbital platform applied sciences. It has additionally secured business partnerships for space-based AI infrastructure.
In line with a information report, Agnikul is valued at over $500 million drawing funding from HDFC Financial institution, Advenza International Restricted, and Artha Choose Fund, amongst others. Individually, the Tamil Nadu authorities’s industrial improvement arm (TIDCO) put in Rs 25 crore below the TIDCO Startup Funding Coverage 2025, marking the primary time a authorities physique has taken an fairness stake in an Indian house startup.
3D printing rocket engines in a single piece
Typical rocket engines are assembled from lots of of individually machined and welded parts, with qualification testing required at every stage, a course of that usually stretches throughout months. A single-piece engine that bypasses that complete sequence doesn’t simply lower price; it instantly helps the sooner turnaround that reusability requires.
The manufacturing strategy Agnikul used with Agnite has a direct parallel within the XRA-2E5, a 200 kN aerospike engine produced by LEAP 71 and HBD lately, additionally a one-metre, single-piece Inconel print accomplished in a steady 289-hour construct, establishing that the manufacturing technique is repeatable at this scale.
On the test-firing aspect, Aconity3D’s single-piece copper alloy aerospike rocket engine handed its hot-fire check on the primary try final yr, suggesting that monolithic 3D printed rocket engines can survive combustion circumstances.
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Featured picture reveals (L-R): Co-Founder and COO, Moin SPM with Srinath Ravichandran, Co-Founder and CEO of AgniKul Cosmos. Photograph by way of Enterprise Commonplace.
