27日从“深海一号”船获悉，“蛟龙”号载人潜水器在菲律宾海盆顺利完成国家重点研发计划“蛟龙号关键作业技术能力提升及科学应用”的7000米级海试。12此次试验依托中国大洋100航次第二航段科学考察进行，共开展3个潜次试验，其中2个潜次深度超过7000米，最大下潜深度达到7056.9米。12
此次海试验证了“蛟龙”号第二次迭代升级及关键部件国产化替代后的可靠性与安全性。12技术层面，“蛟龙”号通过换装7000米级高能量密度油浸锂电池组、安装国产直驱型低噪直流推进器以及扩展应急液压系统接口等创新手段，显著提升了作业效能。12中国国家深海基地管理中心研究员孙永福表示：“这充分验证了‘蛟龙’号迭代升级和关键部件国产化替代后的可靠性与安全性，巩固提高了我国载人深潜装备领域的技术优势。”12
The Chinese manned submersible "Jiaolong" has successfully completed 7,000-meter class sea trials in the Philippine Basin 12. The announcement was made on the 27th from the support vessel "Shenhai Yi Hao" (Deep Sea One) 1. This expedition fulfilled a task under the National Key R&D Program aimed at enhancing critical operational technologies and scientific applications for the vessel 12. During the tests, Jiaolong conducted three dives, with two reaching depths exceeding 7,000 meters and a maximum recorded depth of 7,056.9 meters 12.
Sun Yongfu, a researcher at China's National Deep Sea Base Management Center, stated that these results fully validate the reliability and safety of the submersible following its second iteration of upgrades and the domestic replacement of key components 12. He noted that the successful trials further consolidate and improve China’s technological advantage in the field of manned deep-diving equipment 2. The technical enhancements included replacing the battery pack with high-energy-density oil-immersed lithium batteries designed for 7,000-meter operations, installing domestically produced direct-drive low-noise DC thrusters, and expanding interfaces for emergency hydraulic systems 12. These innovations are expected to significantly boost the operational efficiency of Jiaolong, thereby promoting the advancement of China's deep-sea exploration capabilities 1.
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