eight satellites in one rocket! what is the origin of the "jielong-3" that was just successfully launched in the waters near haiyang, shandong?
2024-09-24
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on the morning of september 24, in the waters near haiyang city, shandong province, the jielong-3 yao-4 carrier rocket sent eight satellites, including the tianyi-41 and starera-15 satellites, into a sun-synchronous orbit at an altitude of 500 kilometers. haiyang's thirteenth sea launch mission was a complete success.
as a member of the commercial aerospace "national team", the jielong-3 carrier rocket has a great background. according to public information, the jielong-3 carrier rocket is a medium-sized four-stage solid-fuel carrier rocket developed by the first academy of china aerospace science and technology corporation and invested by the china long march rocket company (hereinafter referred to as china rocket company), which is affiliated to the first academy. it is china's first carrier rocket that can achieve thermal launch at sea.
the reporter found that this was the fourth successful launch of the jielong-3 carrier rocket. in 2022, the jielong-3 carrier rocket accurately sent 14 satellites into the predetermined orbit in the way of "one rocket and 14 satellites", and the first flight was a complete success; on december 6, 2023, the jielong-3 yao-2 carrier rocket successfully sent a satellite internet technology test satellite into the predetermined orbit; on february 3, 2024, the jielong-3 carrier rocket yao-3 ignited and took off in the waters near yangjiang, guangdong, and nine satellites were sent into space.
according to jin xin, the chief commander of the jielong-3 rocket, the jielong-3 is a high-cost-effective, high-reliability, fast-fulfillment and fast-launch solid-fuel carrier rocket designed to meet the needs of rapid satellite constellation networking and launch in the future. it uses a four-stage solid engine in series layout, with a total length of about 31 meters, a maximum diameter of 2.65 meters, a minimum diameter of 2 meters, and a total mass of about 140 tons.
according to the international space magazine sponsored by the beijing space science and technology information institute, the "high cost performance" of the jielong-3 carrier rocket is reflected in its main use of sea-based thermal launches, compatibility with land launches, adaptability to three modes of transportation: road, rail, and sea, and the ability to launch more than 20 satellites with one rocket. its comprehensive launch cost is relatively good in china. its "high reliability" is reflected in its absorption of the development experience of jielong-1 and long march-11, and its reference to the mature technology of the "long march" series of liquid rockets. the three types of solid carrier rockets of the china academy of launch vehicle technology, long march-11, jielong-1, and jielong-3, have been launched 20 times in total, all of which were successful. the mature technology accumulated over many years of multiple launches supports the high reliability of jielong-3. "fast fulfillment" means that the fulfillment cycle from contract signing to rocket launch is only 3 to 6 months. "fast launch" means that the launch cycle is short, and a single rocket takes no more than one week from satellite-rocket docking to launch, with a high-frequency launch capability of one launch per week.
the success of this launch has enhanced the comprehensive competitiveness of the jielong-3 carrier rocket in the commercial space market and injected new vitality into the development of china's commercial space industry.
(reporters liu yufan, lu le and yang xiuping from dazhong news)
