3D multimedia content of key research achievements is available for viewing.
Detailed specifications of NURI are available for review.
The first stage of NURI is
equipped with four 75-ton engines
and tanks for liquid oxygen and kerosene.
The second stage
features a single 75-ton engine
and tanks for liquid oxygen and kerosene.
The third stage features
a 7-ton engine powers the third stage
and also carries tanks for liquid oxygen and kerosene.
As a Korea three-stage launch vehicle, the Nuri can directly put a 1.5-ton application satellite into a 600-800 km solar synchronous orbit. The engine is a 75-ton liquid engine and 7 ton-class liquid engine. The first stage consists of four clustered 75-ton engines, the second stage has one 75-ton engine, and the third stage features a one 7-ton engine. The Nuri was developed with independent domestic technology throughout all processes of design, manufacturing, and test. Phase 1 of the Nuri development project constructed a propulsion engine test facility and performed the 7-ton liquid engine combustion test. Phase 2 developed the 75-ton liquid engine and succeeded in launching the test launch vehicle (2018). The single-stage test launch vehicle consists of one 75-ton liquid engine to check the 75-ton liquid engine's flight performance. With the successful launch of the test launch vehicle, Korea became the world’s seventh country to have a mid- to large-sized liquid rocket engine of 75 tons or more. The first flight test of Nuri was conducted on 21 October 2021. The second flight test was conducted on 21 June 2022, and Nuri was successfully launched. On 25 May 2023, the third launch of the Nuri was successfully completed amid public interest and support.
| Phase 1 (2010.3 - 2015.7) | Phase 2 (2015.8 - 2019.3) | Phase 3 (2018.4 - 2023.6) |
|---|---|---|
| Development of 7 ton- class liquid engine Test facility construction | Test launch using one 75-ton liquid engine (2018.11) | Assembly of four 75 ton- class (1st stage) + one 75 ton-class (2nd stage) + one 7 ton-class (3rd stage) and launch |
The Nuri is the first project to carry out the entire process from design to production, testing, and launch operation independently in Korea. One of the keys to the development of the Nuri is to develop a 75-ton thrust liquid engine and a propellant tank containing fuel and oxidizing agents and accounting for 70 to 80% of the total volume of the Nuri. Over 150 domestic companies are participating in developing the Nuri.
The 75 ton-class mid- and large-sized liquid engine development is based on the know-how of developing 30 ton-class liquid engine in previous research. KARI was able to develop the world’s 7th mid- and large-sized liquid engine by overcoming the technical limitations of combustion instability and completing ground combustion tests and flight performance tests with test launch vehicles.
KARI also independently developed a large propellant tank despite the many technical difficulties in design and manufacturing because of the thickness of only 2-3mm while the diameter was 3.5m.
To overcome the problem of having to depend on overseas test facilities to check the performance of core engine components at the time since there was no such facility in Korea, a propulsion engine test facility was constructed at the Naro Space Center in order to verify the performance and reliability of core engine components, engine system, and propulsion engine system.
| Development Organization | Satellite Name | System |
|---|---|---|
| KAIST Satellite Research Center |
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|
| Development Organization | Satellite Name | Mission and Payload | System |
|---|---|---|---|
| Justek |
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|
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| Lumir |
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|
|
| Kairo space |
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| Korea Astronomy and Space Science Institute (KASI) |
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|
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![차세대발사체 개발사업('23~'32, 총 10년) : 다단연소사이클 엔진을 적용한 2단형 발사체 개발, 향후 국가위성 및 우주탐사 발사수요에 대응 | [누리호 - 3.3톤, 발사임무 - 지구저궤도(LEO) 투입성능 고도 200km(경사각 80도), 차세대발사체 - 우주관광, 대형 화물수송 10.0톤] [누리호 - 2.2톤, 발사입무 - 태양동기궤도(SSO) 투입성능 고도 500km(경사각 98도), 차세대발사체 - 다목적 실용위성 등 7.0톤] [누리호 - 1.9톤, 발사입무 - 태양동기궤도(SSO) 투입성능 고도 700km(경사각 98도), 차세대발사체 - 다목적 실용위성 등 6.1톤] [누리호 - 1.0톤, 정지천이궤도(GTO) 투입성능 250km X 35.786km, 차세대발사체 - 천리안위성, KPS 위성 3.7톤] [누리호 - 0.1톤, 발사임무 - 달 전이궤도(LTO) 투입성능, 차세대발사체 - 달탐사선/착륙선 등 1.8톤] [누리호 - 0.0톤, 발사임무 - 화성 전이궤도(MTO) 투입성능, 차세대발사체 - 행성/심우주/소행성 귀환 등 1.0톤] | (1차 발사, '30년) 달 궤도 투입 성능검증위성 / (2차 발사, '31년)달착륙선 예비모델 / (3차 발사, '32년) 달착륙선 최종모델 / ('45년)화성탐사](../../../images/site/eng/sub/sub01/nuri_4_launch02.png)