Agnikul Cosmos 3D-Printed Rocket Engines

Agnikul Cosmos, founded in 2017 in Chennai, is developing small satellite launch vehicles powered by the world's first single-piece 3D-printed semi-cryogenic rocket engine (Agnilet). The engine is printed as a single component using direct metal laser sintering, drastically reducing the number of parts (from thousands to one) and manufacturing time. In March 2024, Agnikul launched Agnibaan SOrTeD (Sub Orbital Technological Demonstrator) from India's first private launchpad at ISRO's Sriharikota launch center.

The 3D-printed engine approach is technically ambitious and commercially significant. Traditional rocket engines are assembled from hundreds or thousands of individually manufactured and precision-machined components. Printing the entire engine as a single piece reduces manufacturing complexity, improves reliability (fewer joints to fail), and enables rapid design iteration. Agnikul's approach could make small satellite launches available on-demand within weeks rather than months.

Agnikul represents the cutting edge of India's private space revolution. The company has raised over $30 million from investors including Anand Mahindra and has access to ISRO's testing facilities. Its target market — dedicated small satellite launches in the 30-300 kg payload range — is one of the fastest-growing segments of the global launch market, driven by the explosion of small satellite constellations for communications, Earth observation, and IoT.