China's most powerful segmented solid rocket engines have much cattle?
Beijing News newsletter (reporter Rong Yuanzhao Jia Shiyu correspondents) on August 2, the civil aerospace 3.2-meter-segment solid rocket booster engine ground heat test success.
Largest diameter, charge of the largest and most powerful
According to the introduction, this engine four independently developed by China Aerospace Science and technology group, China's largest diameter, charge the largest, most powerful solid rocket motors. The engine test, indicates that China has mastered key technology of solid rocket booster engine, solid booster also showed that China's new generation of carrier rocket technology and represents a major step forward.
Four Hospital of the China Aerospace Science and technology group, said 3 m diameter engine developed, making large solid motor development of independent innovation ability and level has been improved. Large size composite core components development and molding capacity has increased significantly, give full play to high precision design and simulation capabilities, green insulation material used for the first time, new high efficiency insulation molding and curing process of a substantive breakthrough, all the raw materials, manufacturing equipment to achieve China localization.
Carrying capacity of 100 tons of "Hercules"
It is understood that the future 3 m engines for heavy carrier rocket solid boosters, can achieve near-Earth orbits carrying capacity of 100 tons to meet the development needs of China's manned landing on the Moon, deep space exploration.
China Aerospace Science and technology group introduced four hospital, from the integral solid rocket motors now solid Booster motor, larger in diameter at the same time thrust increase engine thrust of this test can be up to 150 tons, so far, China has created solid rocket motor thrust the most.
In addition, the engine body, welding technology research only lasted four months, total welding time up to 300 hours, hierarchical calculation of welding a total length of 750 meters, use wire weight 350 kg, former head welding 40-hour continuous job, head welding continuous fight after 65 hours. After each girth weld length 9 m, the audience are not allowed within any even tiny inclusions and porosity defects, must pass the full testing.
According to introduced, for can accurate to for engine do "medical" work, Assembly workshop testing group in more block, thickness plate making adiabatic simulation try pieces, used 11 species frequency of detection probe match 6 species scan range constantly attempts to and groping, cumulative made test parameter thousands a, and various waveform pictures hundreds of site, eventually established has the engine Ultrasound testing by used equipment, and probe and the best testing parameter, ensure has engine eventually smooth through "security channel".
(Editors: Zhong Qinghui UN660)
2016-08-02 18:21:31
The Beijing News
中国推力最大分段式固体火箭的发动机有多牛？
新京报快讯(记者贾世煜 通讯员荣元昭)8月2日，民用航天3米2分段大型固体火箭助推发动机地面热试车成功。
直径最大、装药量最大、推力最大
据介绍，这一发动机由中国航天科技集团四院自主研制，系中国直径最大、装药量最大、推力最大的固体火箭发动机。该发动机的试车成功，标志着中国已经掌握大型固体火箭助推发动机关键技术，也表明中国新一代运载火箭固体助推技术又向前迈进了一大步。
中国航天科技集团四院表示，直径3米发动机的研制成功，使中国大型固体发动机自主创新的研制能力和水平得到进一步提升。大尺寸复合材料核心构件研制和成型能力大幅提升，高精度设计仿真能力作用充分发挥，绿色环保绝热材料首次使用，新型高效率绝热层成型与固化工艺取得实质性突破，全部原材料、制造设备实现中国国产化。
运载能力达到100吨以上的“大力士”
据了解，未来3米发动机应用于重型运载火箭固体助推器中，可实现近地轨道运载能力达到100吨以上，满足中国载人登月、深空探索的发展需求。
中国航天科技集团四院介绍，从整体式固体发动机到如今的固体助推发动机，直径在变大的同时推力也在增大，这次试车的发动机推力可以达到150吨以上，创造了中国迄今固体发动机推力之最。
另外，在发动机身上，仅焊接技术攻关就历时四个多月，累计焊接时间多达300小时，分层计算焊接总长度达750米，使用焊丝量350公斤，前封头体连续作业装焊40小时，后封头体装焊连续鏖战65小时。每条环焊缝展开后长度9米，全场范围内不允许有任何哪怕是微小的夹杂和气孔等缺陷，必须通过百分百的探伤检测。
据介绍，为能够准确无误地为发动机做好“体检”工作，总装车间探伤组在多块等厚度钢板制作绝热模拟试件，采用11种频率的检测探头匹配6种扫描范围不断尝试与摸索，累计取得试验参数上千个、各类波形图片几百幅，最终确立了该发动机超声探伤所采用设备、探头及最佳探伤参数，确保了发动机最终顺利通过“安检通道”。
(责任编辑：钟庆辉 UN660)
2016-08-02 18:21:31
新京报