BLT Supports Successful 10km-Level Flight and Recovery Test of Longyun Liquid Oxygen-methane Engine
On June 23, 2024, JiuZhou Yunjian (Beijing) Space Technology Co., Ltd. achieved a significant milestone with the successful completion of a 10km-level flight and recovery test of its Longyun liquid oxygen-methane engine at the Jiuquan Dongfeng Launch Site. This maiden flight evaluation showcased stable performance across all parameters, including flawless execution of start-up, shut-down sequences, thrust vectoring, and modulation. This landmark test represents China’s largest-scale vertical takeoff and landing (VTOL) flight trial for reusable rockets to date. It marks the inaugural deployment of a domestically developed deep-throttleable liquid oxygen-methane engine in a 10km-level return flight. The test rigorously validated the VTOL configuration of a 3.8-meter diameter rocket body, showcasing advancements in high-load landing cushioning technology, large-thrust, highly throttleable, reusable propulsion technology, and precision navigation and guidance control for return landings, along with advanced health monitoring technology. BLT played a crucial role in this achievement by providing extensive metal additive manufacturing support. This included the development of critical components such as thrust chamber parts and turbopump components, leveraging innovative approaches to enhance production efficiency and component quality. Longyun liquid oxygen methane engine completes 10km-level flight recovery test. Innovative Solutions for Critical Engine Components The thrust chamber cap, integral to the functionality of the liquid oxygen-methane engine by transmitting thrust and housing propellants, has historically posed manufacturing challenges due to its reliance on segmented welding methods. These methods are susceptible to cracking under extreme conditions of temperature and pressure. Addressing these challenges, BLT opted for the high-temperature alloy In718 for its superior properties. Utilising the BLT-S450 printing machine, BLT achieved integrated manufacturing of the thrust chamber cap in just seven days. This approach not only ensures exceptional precision and product quality but also accelerates manufacturing timelines, facilitating rapid technological advancements and enhanced development efficiency for our clients. Pioneering Advances in Turbopump […]