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India’s space startup Agnikul Cosmos becomes the first to fire fully 3-D printed rocket engine

India’s space startup Agnikul Cosmos

India-based space startup Agnikul Cosmos becomes the world’s first company to test a 3D printed rocket engine successfully. Its higher stage semi-cryogenic rocket engine is called Agnilet. This entire engine, Agnilet is just one piece of hardware from start to finish, having zero assembled parts.

It is pretty difficult to build rocket engines, and even tougher to 3D print as all the details have to be extremely precise for the rocket to work successfully. Agnikul Cosmos from Chennai, India became the first to pull off this task. It only takes four days to build the engine and it can carry payloads of upto 100 kilos into lower earth orbit (LEO), which is around 700 km above the Earth’s surface. That is a fraction of what the Polar Satellite Launch Vehicle (PSLV) is capable of carrying. Many other companies are soon realising the value of 3D printed engines versus conventional assembly.


Rocket engines have hundreds of different complex parts that have to be built individually such as injectors which inject fuel into the engine, cooling channels that ensure the engine doesn’t overheat and the igniter that kindles propellants to push the rocket off the ground.

Agnilet is a three-in-one solution that takes all three of these modules and puts them into a single piece of hardware. There is no need for carrying out complex assembly as well. Agnikul was the first Indian space startup to enter into a non-disclosure agreement (NDA) with the Department of Space (DoS) under Indian National Space Promotion and Authorisation Centre (IN-SPACe). The company was founded in 2017 by Moin SPM and Srinath Ravichandran (CEO).

Another Hyderabad, India-based space startup Skyroot Aerospace revealed last year that they are building their fully 3D printer cryogenic rocket engine dubbed Dhawan-I. Skyroot was founded by former Indian Space Research Organisation (ISRO) scientists Pawan Kumar Chandana and Naga Bharath Daka. They will be using ISRO’s test and launch facilities to test their Vikram-I rocket and eventually Dhawan-I.

Firehawk Aerospace is the only US-based startup that is close to producing a fully 3D printed rocket engine. It recently raised US$ 2 million to start its project. Space engine technology like 3D printed rocket engines are expected to play a major role in the explosion of the global space industry’s value in the coming years.

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Komal writes about the startup ecosystem on VCBay. She is an Economics Hons. graduate from Miranda House, Delhi University, and is passionate about the world of entrepreneurship and finance.



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