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NASA’s 3D-Printed Rocket Engine Spews Fire and 20,000 Pounds of Thrust

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This NASA rocket is, bewilderingly, mainly built from 3D-printed parts. And yet pumped full of liquid hydrogen and oxygen it spews flame and generates an insane 20,000 pounds of thrust.

NASA has been developing 3D-printed rocket engines for a while now. But in its latest test, it’s pieced together a rocket engine where 75 percent of the components are 3D-printed—the highest proportion yet.

In these videos, you can see the team from Marshall Space Flight Center in Huntsville, Alabama putting it through its paces. That saw the engine burning fuel at temperatures above 6,000 degrees Fahrenheit, while the fuel pumps supplying liquid hydrogen were as cold as -400 degrees Fahrenheit. With the pump running at 90,000 revolutions per minute, the engine generated over 20,000 pounds of thrust. One of the runs even lasted a full ten seconds.

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Jamie Perozzi

VP of Technology 6K Additive

Mr. Perozzi has 20+ years of specialty metals experience with a focus on process, new product development, product management, and application engineering. Before joining 6K, Perozzi spent seven years at AMETEK Specialty Metal Products responsible for quality and process engineering. Prior to Ametek, he spent 10 years at Hitachi Metals – Metglas and 3 years at J&L Specialty Steel. Perozzi holds a BS Metallurgical Engineering degree from Penn State University.

Dr. Timothy Smith

Materials Research Engineer NASA Glenn Research Center

Tim Smith graduated with a PhD in materials science and engineering from Ohio State University in 2016. After graduating, his pathways internship at NASA Glenn research center became a full-time position. His research focuses on high temperature alloy development and characterization. He has contributed to 29 peer-reviewed publications including journals in Nature Communications and Nature Communications Materials. His research has also produced 10 new technology reports and 3 utility patents. He recently received both the Early Career Achievement Medal in 2020 and the Exceptional Scientific Achievement Medal in 2022.

Dr. Douglas Hoffman

Senior Research Scientist (SRS)/ Principal Section Technologist NASA Jet Propulsion Laboratory

Dr. Douglas Hofmann is a Senior Research Scientist and Principal at NASA’s Jet Propulsion Laboratory, where he serves as the Section Technologist for the Mechanical Fabrication and Test Section. He is also a Lecturer and Visiting Associate at Caltech in the Applied Physics and Materials Science Department. Dr. Hofmann founded JPL’s Metallurgy Facility in 2010, was a charter member of the Materials Development and Manufacturing Technology Group, and helped establish the JPL Additive Manufacturing Center. He is the Principal Investigator of the NASA FAMIS Flight Experiment and was a 2012 recipient of the Presidential Early Career Award for Scientists and Engineers from President Obama. He has spent more than 12 years working in metal additive manufacturing and has over 30 granted patents and over 60 peer-reviewed publications.

Dr. Jacob Nuechterlein

President/Founder Elementum 3D

Dr. Jacob Nuechterlein is the founder and president of Elementum 3D in Erie, CO. He earned his Bachelor of Engineering, Master of Science, and Doctor of Philosophy at the Colorado School of Mines. Jacob has been researching, teaching, or consulting on topics such as casting and powder metallurgy for the last 14 years. Elementum 3D’s work with powder bed laser additive manufacturing is based on these principles. In addition, is thesis work in thermodynamics and formation kinetics of metal matrix composites is directly related to all 3D printing processes.