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[本刊综合报道]2005年1月12日,日本H-2A火箭改进型助推器发动机完成地面点火试验,燃烧时间比预定的115秒少1秒,其余数据参数均在预定值范围内。这次试验是由日本宇宙航空研究开发机构在鹿儿岛县种子岛宇宙中心固体火箭试验场进行的。试验取得成功,表明日本完成了H-2A火箭改进型助推器的定型试验。日本H-2A火箭2003年11月发射侦察卫星失败,原因是火箭助推器发动机喷嘴漏气,为了确保H-2A火箭第二次发射能够获得成功,日本宇宙航空研究开发机构对喷嘴形状进行了改进,即形成固体
On January 12, 2005, Japan’s improved H-2A rocket booster engine completed a ground-fire test with a burn time of 1 second less than the scheduled 115 seconds and the remaining data parameters were within the predetermined range. The test was conducted by the Japan Aerospace Exploration Agency at the solid rocket test site at Tanegashima Cosmic Center, Kagoshima Prefecture. The successful test showed that Japan completed the styling test for the improved boosters of the H-2A rocket. Japan’s H-2A rocket failed to launch a reconnaissance satellite in November 2003 due to a leak in the rocket booster engine nozzle. To ensure the success of the second launch of the H-2A rocket, JAXA conducted a nozzle shape Improve, that is, form a solid