Indian startup unveils world's largest single-piece 3D-printed rocket engine

Indian space-tech startup Agnikul Cosmos has developed the world’s largest single-piece 3D-printed rocket engine, measuring one meter in length and made entirely from Inconel, a high-performance nickel-chromium superalloy. This innovative engine is manufactured as a fully integrated, one-piece structure without welds, joints, or fasteners, which traditionally pose risks of failure in rocket engines. The 3D printing approach reduces manufacturing complexity and production time while enhancing structural integrity, marking a significant advancement in rocket engine design. Agnikul has also secured a US patent for this unique design and manufacturing method, underscoring India’s growing presence in the global aerospace sector. Founded in 2017 at the Indian Institute of Technology Madras, the company previously test-fired its first 3D-printed engine, Agnilet, in 2022. Agnikul’s latest development aims to offer more cost-effective, reliable, and rapidly produced rockets for on-demand space missions. The