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Reactive Additive Manufacturing for Fourth Industrial Revolution Exploration Systems (Ramfire) Aluminum 6061-Ram2 Nozzle TestingThe NASA Marshall Space Flight Center (MSFC) has applied various forms of metallic additive manufacturing (AM) in liquid rocket engine component design, development, and testing since 2010. These AM techniques reduce hardware cost, shorten fabrication schedules, increase reliability by reducing the number of joints, and improve hardware performance by allowing unconventional design. The RAMFIRE project, funded under Space Technology Mission Directorate (STMD) Game Changing Development (GCD) Program, has furthered the use of novel AM liquid rocket nozzles in collaboration with Elementum 3D. The project advanced novel large-scale AM aluminum material technology for significant weight savings in rocket engines and launch vehicles. Previously, aluminum alloys were difficult to weld and print using additive manufacturing. Elementum 3D’s patented Aluminum 6061-RAM2 alloy allows for aluminum alloys to be printed using various AM techniques and at various scales. The alloy can be leveraged for welding wire, showing drastic improvements in aluminum weldability. The RAMFIRE project focuses on five key areas: 1) Laser Powder Directed Energy Deposition (LP-DED) AL6061-RAM2 feedstock specification and verification, 2) LP-DED process development and validation, 3) LP-DED printed AL6061-RAM2 microstructural and mechanical property characterization, 4) Hot-fire test a 7k-lbf thrust class regeneratively cooled nozzle, 5) Print large scale regeneratively cooled nozzle. Hot-fire testing demonstrates potential of advanced space technologies to NASA and potential users by providing the relevant environments to advance TRL levels to the 5/6 range.
Document ID
Acquisition Source
Marshall Space Flight Center
Document Type
Conference Paper
Tessa M Fedotowsky
(Marshall Space Flight Center Redstone Arsenal, Alabama, United States)
Benjamin B Williams
(Marshall Space Flight Center Redstone Arsenal, Alabama, United States)
Date Acquired
June 16, 2023
Publication Date
June 21, 2023
Subject Category
Spacecraft Propulsion and Power
Meeting Information
Meeting: Marshall Space Flight Center Jamboree & Poster Expo
Location: Huntsville, AL
Country: US
Start Date: June 22, 2023
Sponsors: Marshall Space Flight Center
Funding Number(s)
WBS: 264925.04.28.62
Distribution Limits
Portions of document may include copyright protected material.
Liquid Rocket Engine
Hot Fire Testing
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