At the given command, an unmanned aerial vehicle (UAV), measuring 3.3 meters in length and boasting a wingspan of 2.1 meters, soared into the sky, propelled by a rocket booster. Its tail flame blazed brightly as it ascended to an altitude of 6,000 meters, remaining airborne for 30 minutes and reaching a top speed of Mach 0.75. This remarkable feat unfolded in Dingbian, Shaanxi Province, during a single-engine flight test of a cutting-edge aero engine. Notably, this engine marks China's inaugural foray into independently developing a 3D-printed turbojet aero engine, thereby bridging a significant gap in the domestic engineering application of fully 3D-printed aero engines.
