Nasa 3D Printed Rocket Nozzle

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Nasa is leading Artemis program that aims at landing the first woman and the next man on the moon by 2024, laying the foundation for eventually sending humans to Mars.


To cut the cost of its most expensive rocket engine components, NASA has funded the Rapid Analysis and Manufacturing Propulsion Technology RAMPT project develops new methods and techniques to 3D print rocket nozzles using metal powder and lasers.


The technology used is similar to the DED one and is called Blown Powder Directed Energy Deposition technology which uses a robot-attached print head, can 3D print large metal rocket nozzles with 1 meter in diameter by 0.9 meter high in 30 days instead of the usual 1 year period using classical welding tools.


The printed Rocket nozzle will be subjected to a combustion test reaching 6000 degrees and pressures similar to the ones undertaken during a rocket launch.


Finally, The 3D printed rocket nozzle will have cooling channels that allow a cryogenic propellant gas to pass through to maintain an optimal temperature, a feature that is unique to the 3D printing process.


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Original Article: https://www.nasa.gov/centers/marshall/news/releases/2020/future-rocket-engines-may-include-large-scale-3d-printing.html
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