China's Tianlong-3 Rocket Successfully Completes 1,000-Tonne Thrust Test, Nearing Maiden Flight

Critical Test Paves Way for Tianlong-3's Orbital Debut

China's commercial aerospace firm, Space Pioneer, announced a significant achievement on Monday, September 15, 2025, with the successful completion of a full-scale first-stage propulsion system test for its large reusable Tianlong-3 rocket. Conducted at the Haiyang Oriental Aerospace Port on an offshore platform in Shandong Province, the test involved a 35-second burn of the rocket's nine Tianhuo-12 engines, generating nearly 1,000 tonnes of thrust. This 'major exam' is considered a crucial step in the rocket's development, moving it closer to its anticipated maiden flight by the end of 2025.

Tianlong-3: A Falcon 9 Competitor for China's Space Ambitions

The Tianlong-3, also known as 'Heavenly Dragon 3' (TL-3), is a 71-72 meter tall, 3.8-meter diameter, medium-lift orbital launch vehicle designed to be partially reusable. Its first stage is engineered for autonomous vertical landing and can be reused up to 10 times. With a takeoff mass of approximately 590-600 tonnes, the rocket boasts a substantial payload capacity, capable of delivering 17 to 22 tonnes to Low Earth Orbit (LEO) and 10 to 17 tonnes to Sun-Synchronous Orbit (SSO). Space Pioneer aims for the Tianlong-3 to provide low-cost, high-frequency launch solutions, particularly for China's burgeoning satellite internet constellations, positioning it as a direct competitor to SpaceX's Falcon 9.

Overcoming Past Setbacks with Enhanced Design

This successful test follows a challenging period for the Tianlong-3 program. On June 30, 2024, an earlier static fire test in Gongyi, Henan province, resulted in an accidental liftoff and subsequent crash due to a structural failure at the connection between the rocket body and the test stand. In response, Space Pioneer implemented over 100 technical upgrades to the rocket's design and testing regimen, focusing on reinforcing structures, improving safety systems, and enhancing diagnostics. The company's founder, Kang Yonglai, confirmed that the parameters obtained from the recent comprehensive system drills met the performance requirements for the rocket's inaugural flight, underscoring the effectiveness of these improvements.

Looking Ahead: Maiden Flight and Future Role

The successful 1,000-tonne thrust test is a pivotal moment for Space Pioneer and China's commercial space sector. It signifies that the Tianlong-3 is now in the 'final sprint' towards its orbital debut, which is expected to launch from the Wenchang Commercial Spaceport's LC-2 launch complex. The rocket is poised to play a critical role in supporting large-scale cargo transport to China's space station and facilitating the deployment of numerous satellites, further solidifying China's capabilities in the global commercial launch market.