ESA - 3D-printed storable-propellant rocket engine design tested

The recent hot firing of a full-scale rocket thrust chamber assembly takes us a step closer to proving 3D-printing for an engine design destined for rocket upper stages, in-orbit transportation applications (kick-stages and space-tugs), microlaunchers, and exploration spacecraft such as a lunar lander and ascent stage on the Moon.

ESA - Propulsion activities

Ariane 6: ESA Space Transportation Program - eoPortal

How do Solid Rocket boosters withstand the temperature of their exhaust? - Quora

ESA-ASPIRER: aerospike rocket engine with 6000 Newton thrust from the powder bed 3D printer. - Fraunhofer IWS

What alternative rocket propulsion systems are currently under research for launching significant payloads into space, aside from traditional chemical-based systems? - Quora

Rocket Factory Augsburg talks reusability plans and 3D printing

EOS helps students at University of Texas to develop an ambitious rocket design - Make Parts Fast

Unveiling vehicles and technologies for future space transportation

Fully 3D printed rocket engine unveiled by Skyroot Aerospace - 3Dnatives

Are there any hand-sized rocket engines? - Space Exploration Stack Exchange

Launcher Set to Trailblaze with 3D Printed Space Rockets