Indian space startup Agnikul Cosmos has achieved a remarkable milestone by manufacturing the world’s largest single-piece 3D‑printed rocket engine. Constructed from heat-resistant Inconel, the engine is approximately one meter in length and crafted as a single integrated unit, without any welds, joints, or fasteners—from fuel inlet to plume exit .
This innovative design significantly simplifies the production process, accelerates manufacturing timelines, and lowers failure risk by eliminating complex assembly steps. Agnikul’s engine has also earned U.S. patent protection, underscoring its uniqueness and technological leadership .
With this breakthrough, Agnikul not only strengthens India’s position in additive aerospace manufacturing but may also reshape cost and performance metrics for next‑generation rocket hardware .
