3D Printed Rocket Nozzle to Propel NASA Space Exploration

While private aerospace companies have been utilizing 3D printing technology to further their own stellar aims, the National Aeronautics and Space Administration has not been neglecting the additive manufacturing trend either. In 2023 alone they have 3D printed moon rover wheels, components for the International Space Station and utilized 3D printed circuitry aboard rockets, to name but a few projects which fall under NASA’s exceedingly concerted push to utilize additive manufacturing technologies for its rockets and space-bound initiatives. Most recently added to the list, NASA has successfully tested a 3D printed rocket engine nozzle made from aluminum, opening up new opportunities as the lightweight material allows for larger payloads to be sent into space.

The rocket engine nozzle was a cooperative effort between NASA engineers from the Marshall Space Flight Center and 3D printing company Elementum 3D based out of Erie, Colorado. The joint collaboration was to develop a new variant of aluminum which would be optimized for 3D printing rocket engine parts. Aluminum has been seen as a promising choice for additive manufacturing due to its high strength and low weight. Indeed, aluminum has already been used to 3D print various other mechanical parts in other sectors, such as gearbox and engine parts for automotive companies like BMW.

An image of the 3D printed nozzle on the laptop in the background and vacuum jacket manufacturing demonstrator tank used for cryogenic fluid application, made from the same aluminum material. (Photo credits: NASA)

But, when it comes to rocketry, the metal has not been used as often due to a low heat tolerance which leaves the metal vulnerable to cracking under the extreme heat of a rocket engine’s blast. However, under the NASA initiative known as Reactive Additive Manufacturing for the Fourth Industrial Revolution, or RAMFIRE, the team was able to engineer an innovative solution to overcome these previous obstacles, leaving aluminum with only its positive qualities.