China Tests 3D-Printed Turbojet Engine for Drone Flight

China has advanced its unmanned aerospace capabilities with the successful testing of a 3D-printed turbojet engine powering a drone for a continuous 30-minute flight. The achievement marks a significant step toward rapid-manufacture propulsion systems designed for next-generation defence applications.

Details of the Turbojet Engine Test

The trial, conducted by the Aero Engine Corporation of China, involved a lightweight turbojet producing around 160 kg of thrust. More than three-quarters of the engine’s components were produced using additive manufacturing, reducing weight and simplifying assembly. The drone reached an altitude of 6,000 metres and speeds of up to Mach 0.75 before being recovered by parachute.

Military and Industrial Significance

The engine is intended for loitering munitions, unmanned aircraft and target drones. Additive manufacturing enables rapid production and lower costs, aligning with the demand for expendable platforms. The trial also indicates progress in China’s independent aero-engine research, with topology-optimised designs promising shorter development cycles for future high-altitude and high-speed systems.

Technological Context and Strategic Implications

In global aerospace, propulsion remains a challenging domain. China’s success demonstrates its move toward fast-produced, lightweight engines suitable for wide deployment across unmanned systems. This shift toward additive manufacturing could influence supply chains, production rates and overall force readiness as drones gain prominence in surveillance, strike and swarm roles.

Exam Oriented Facts

• The tested turbojet delivered ~160 kg thrust and powered a 30-minute drone flight.
• Over 75% of the engine components were 3D-printed.
• The drone reached Mach 0.75 and 6,000 metres altitude during the test.
• Additive manufacturing supports rapid, cost-efficient production of expendable systems.

Challenges and Future Outlook

Engineering concerns remain regarding durability, metal fatigue and long-term reliability of 3D-printed components under extreme temperatures and pressure. More data is awaited on endurance, performance ceilings and operational readiness. As tests progress, the key question will be whether China can scale this engine for mass production, potentially reshaping regional unmanned aerial competition.