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Thursday, June 1, 2023
NewsSouth Korea's 'Nuri' launch vehicle will attempt to put satellites into orbit...

South Korea’s ‘Nuri’ launch vehicle will attempt to put satellites into orbit again on May 25 Fox News


The corresponding statement was made by the First Deputy Minister of Science, Technology and Telecommunications of the Republic of Korea, Oh Tae Sok. “Our specialists checked the program all night and were able to establish that the command of the control system of the helium supply device of the tank had not been brought. The problems were eliminated, during repeated repeated checks, it has been confirmed that now everything is working normally,” the official said. Local media, citing sources at the Korea Aerospace Research Institute, which oversaw Nuri’s production and led the launch, said engineers had tested the patched program six times at 5 a.m. and everything was now working. Normally.

Recall that yesterday, less than three hours before the scheduled launch, during the process of checking the low-temperature helium valve, engineers identified a connection problem between the launch control computer and the ramp computer. launch. In this regard, it was decided to postpone the launch.

Taking into account the troubleshooting and favorable weather conditions, the final decision was made to launch the Nuri launcher today – at 6:24 p.m. local time (i.e. 12:24 p.m. Moscow time), i.e. exactly one day later than originally planned. At the same time, it was stated that, despite the delay, all rocket and satellite systems are in good condition.

Recall that the first launch of the Nuri launcher was carried out on October 21, 2021, but it was recognized as “partially successful”, since at the final stage the satellite model could not enter the planned orbit. The second flight of “Nuri” on June 21, 2022 was completely in normal mode. The system reached its target altitude and launched a 200 kg spacecraft, four small satellites and a 1.3 ton payload mockup into low Earth orbit. However, during the launch in June last year, the satellites were not used to perform some separate independent tasks, but were used to control the operation of the launch vehicle. In addition, the role of the “main load” weighing 1300 kg was still performed by the layout in order to reduce losses in the event of a breakdown. The current launch is no longer of a test nature, but exclusively “work” or commercial, when eight satellites are launched into orbit with their own tasks of observing the Earth’s surface, monitoring the state of the atmosphere , etc.
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The Nuri launcher (KSLV-II) is a three-stage system with a total weight of 200.4 tons and a length of 47.5 m. The first stage (length 21.6 m) is provided by four engines with a thrust of 75 tons each, in the second (13.6 m) a 75-ton engine is installed, and on the third (7 m) – a 7 ton engine. The payload this time was a total of 504 kg and consisted of eight small satellites: NEXTSat-2 (weight 180 kg), four SNIPE satellites A, B, C, D (Korean name for “Toyoset” satellites 1-4, total weight 40 kg), Lumir-T1 (10 kg), KSAT3U (6 kg) and JLC-101-v1-2 (4 kg). The cost of the project to create the launch vehicle “Nuri” (KSLV-II) amounted to 1.8 billion dollars and has been implemented since 2010.

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