#China's 3D-printed minimalist turbojet #engine completed its first single-engine flight test on Thursday, marking a significant breakthrough in the engineering use of 3D-printed engines. The new product is independently developed by the Aero Engine Corporation of China (AECC). The 30-minute flight reached an altitude of 6,000 meters and a maximum speed of Mach 0.75. More than three-quarters of the engine's weight comprises 3D-printed components, slashing the part count and enabling a lightweigh