Experimental Study of L-PBF Micro-channel Surface Roughness: An Experimental Study on the Effects of Build Angle on Surface Roughness and Fluid Flow Performance in Laser-Powder Bed Fusion manufactured Micro-channels

Progress in Laser powder bed fusion manufacturing has led to greater use of Additive Manufacturing in combustion chambers/nozzles. This allows for the creation of more intricate and efficient solutions, but generates the need for a better understanding of how surface roughness in micro-channels used for engine cooling relates to build angle and...

Preliminary Design of a Small Hydrogen Peroxide Cooled Thrust Chamber for Additive Manufacturing

As a part of a <i>Future Launcher Preparatory Programme</i> contract issued by the European Space Agency, the aerospace startup company Dawn Aerospace is developing an integral, additive manufactured (AM), liquid rocket engine. This 2.5 kN class engine is propelled by the storable propellants 90% hydrogen peroxide and kerosene and used in the...

End to end process evaluation for additively manufactured liquid rocket engine thrust chambers

High performance liquid rocket engines require cooling to maintain structural integrity of the combustion chamber which is exposed to high thermal and environmental loads. For many systems, this is achieved by means of regenerative cooling, where a coolant flows through passages around the chamber wall whilst extracting heat from the wall. A...