2022年3月29日，我国新一代运载火箭长征六号改（CZ-6A）在太原卫星发射中心成功完成首次飞行任务，将两颗卫星准确送入预定轨道。此次发射标志着我国首型固液捆绑式中型运载火箭正式投入使用，填补了我国在该技术领域的空白。长征六号改是在长征六号基础上改进而来，采用“液体芯级+固体助推器”的混合动力构型，芯一级使用液氧煤油发动机，两侧捆绑两枚固体燃料助推器，显著提升了运载能力和任务适应性。其近地轨道运载能力达4.5吨，700公里太阳同步轨道运载能力约2吨，可满足多种中小型卫星发射需求。此次首飞成功不仅验证了固液捆绑总体设计、大推力固体发动机等多项关键技术，也体现了我国航天工业在模块化、系列化发展道路上的重要进展。未来，长征六号改将与长征系列其他型号共同构建更加灵活、高效、可靠的发射体系，为我国商业航天和国家重大工程提供有力支撑。
On March 29, 2022, China’s new-generation launch vehicle, the Long March 6A (CZ-6A), successfully completed its maiden flight from the Taiyuan Satellite Launch Center, accurately placing two satellites into their designated orbits. This mission marked the operational debut of China’s first medium-lift rocket featuring a solid-liquid hybrid configuration, filling a critical technological gap in the nation’s launch capabilities.Developed as an upgraded variant of the Long March 6, the CZ-6A employs a unique architecture combining a liquid-fueled core stage with two solid-fuel strap-on boosters. The core stage uses a kerosene/liquid-oxygen engine, while the solid boosters significantly enhance payload capacity and mission flexibility. It can deliver up to 4.5 metric tons to low Earth orbit (LEO) and approximately 2 metric tons to a 700-kilometer sun-synchronous orbit (SSO), making it well-suited for launching various small- to medium-sized satellites.The successful inaugural flight validated key technologies, including integrated solid-liquid stage design and high-thrust solid rocket motors, highlighting China’s progress toward modular and standardized launch vehicle development. Going forward, the Long March 6A will complement other Long March variants to form a more versatile, efficient, and reliable launch system, supporting both national space programs and the growing commercial space sector.
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