An experiment using FDM 3D-printed plastic parts to build a propane-burning rocket engine, relying on water cooling to overcome the material's low heat tolerance. The uncooled combustion chamber melted quickly, and a redesigned water-cooled version failed when the water jacket leaked into the chamber and extinguished the flame. The approach is deemed impractical for flight use due to the excessive water weight required for sustained cooling.
35 Impressions