How long could it be before someone 3-D PRINTS US AN LIQUID FUELED HIGH POWERED MODEL ROCKET ENGINE ? oops sorry guys for the caps. My fingertips are numb from diabetes so I have to look down as I type! I am kind of sure that some parts may not be miniaturized. I know little about liquid fueled engines except the basics."as others play to catch up"
SpaceX fired a fully 3D printed (DMLS) Inconel chamber for the Super Draco in 2015. Rocketlab flight qualified their 3D printed Rutherford engine in 2016. Ursa Major fired their 3D printed oxidizer-rich staged combustion engine, Hadley, as early as 2017.
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