Indian space startup Agnikul Cosmos has achieved a significant milestone by building the world’s largest single-piece 3D-printed Inconel rocket engine made from Inconel, a high-performance superalloy known for its strength and heat resistance. This breakthrough engine, about a meter long, is printed entirely as one integrated component without any welds, joints, or fasteners from fuel entry to plume exit. Such an innovation drastically reduces manufacturing complexity, production time, and potential failure points, positioning Agnikul at the forefront of additive manufacturing in rocketry.Further elevating their accomplishment, Agnikul has been granted a US patent for the design and manufacturing process of this single-piece rocket engine. Being granted a patent in the US means that Agnikul holds exclusive legal rights to their invention within one of the world’s largest and most competitive markets, preventing others from making, using, or selling the patented technology without permission. This patent marks a rare achievement for an Indian-origin design, reflecting the startup’s growing influence in global space technology and reinforcing India’s position in the next-generation rocket manufacturing landscape.
Agnikul revolutionising rocket manufacturing with single-piece 3D printing
Agnikul Cosmos’ engine represents a major leap in aerospace engineering, leveraging additive manufacturing technology to print a complete rocket engine as a single piece. This method eliminates the need for traditional assembly processes, which often involve complex welding and joining of multiple parts. The use of Inconel, a nickel-chromium-based superalloy, ensures that the engine can withstand the extreme temperatures and pressures encountered during rocket launches. The scale and complexity of this engine surpass earlier models, allowing more efficient fluid flow and improved durability.This fully integrated manufacturing approach cuts down production time by over 60% and reduces weight, enhancing the overall performance and cost-effectiveness of rockets. Agnikul’s innovation is a clear example of how advanced 3D printing is revolutionizing space technology, making rocket production faster, safer, and more scalable.
Strategic impact and support from Indian space ecosystem
The US patent granted to Agnikul Cosmos is a significant intellectual property victory that underscores the originality and technical sophistication of their design. The patent provides legal protection in a highly competitive global market historically dominated by established aerospace giants. This milestone strengthens India’s position in the private space sector and signals growing confidence in indigenous technologies.Agnikul’s progress is supported by collaborations with key Indian space institutions, including ISRO and INSPACe, as well as partnerships with industry leaders like Wipro 3D. Government backing through agencies like the Department of Science and Technology (DST) and the Technology Development Board (TDB) has been instrumental in fostering innovation. This collective effort is driving India’s emergence as a leader in next-generation rocket propulsion and space exploration technologies.
