Nouriho

Article

July 6, 2022

The Nuri (-號, English: Nuri, KSLV-II, Korea Space Launch Vehicle-II) was developed in June 2021 and launched on October 21, but failed to land in orbit, and at 16:00 on June 21, 2022, the following year. (KST) The second launch was successful at the Naro Space Center in Korea. The next third launch is scheduled for the first half of 2023, and the final sixth launch is scheduled for 2027. For reference, in 2030 and 2031, a lunar landing verification vessel and a lunar lander will be sequentially launched using next-generation projectiles. By separating the 1.3-ton performance verification satellite and the satellite model and placing them in orbit, Nuri is the first low-orbit practical satellite launch rocket in Korea, and the Korean launch vehicle (KSLV), which succeeded in self-development with pure domestic technology without foreign technical support. -S), and it is expected to become the technical basis for medium and geostationary orbital projectiles and large geostationary projectiles in the future. 2 trillion won was invested, four times the budget of 500 billion won for the Naro (KSLV-I). It was called KSLV-II, a Korean launch vehicle for a while, and the official name was decided to be the Nuri. The first test launch took place at 17:00, 1 hour later than scheduled on October 21, 2021, and the mounted satellite model was separated around 17:15. The projectile successfully reached an altitude of 700 km, but failed to put the satellite into orbit as the three-stage engine burned out 46 seconds earlier than planned.

History

It was in the mid- to long-term basic space plan announced in 1996 that the first plan to develop a space launch vehicle in Korea was decided. However, this was a declarative nature of setting long-term goals without a specific plan, and it was in the mid- to long-term basic plan for space development announced in 2000 that it was materialized in reality. According to this plan, the satellite launch vehicle development plan was divided into three phases. Developed 100 kg class low-orbit small satellite launch vehicle by 2005 Development of 1 ton class low orbit practical satellite launch vehicle by 2010 Development of a 1.5-ton low-orbit practical satellite launch vehicle by 2015, but the development plan for the first small satellite launch vehicle was changed and delayed. changed the plan. Instead of the original plan, it was changed to develop a launch vehicle twice in 2007 and 2015, and the plan for a 1-ton low-orbit utility satellite launch vehicle, originally scheduled to be launched in 2010, was abandoned. In 2006, in the 'Survey and Analysis Study (KAIST, Park Seung-oh) for Practical Satellite Launch Vehicle (KSLV-II) Development Project', a total of 8 launch vehicle composition plans were reviewed and the overseas cooperation plan was given priority, but if it was difficult, the self-support plan (VK2) was adopted. decided to do However, as the projectile self-development plan was established at the 'Expert Review Meeting for Projectile Technology Independence' held three times from May to July 2007, the development of the 30-ton liquid engine was completed at the EM level, and the 80-ton liquid engine was completed. The plan to develop an engine and develop a 1.5-ton class satellite launch vehicle was adopted. Accordingly, in 2008 and 2009, the Korea Institute of Science and Technology Planning and Evaluation conducted a preliminary feasibility study for the Korean launch vehicle development project. K1 ~ K7 plans developed and used were comparatively investigated. Each specific proposal is as follows. Among them, proposals R1 to R3 were excluded because they conflicted with the independent development goal, and after evaluating the relevance of the remaining proposals, proposal K2 was finally adopted. After that, the system design was changed slightly and the current design was confirmed. system