South Korea's attempt to launch its own carrier rocket Nuri is considered "partially successful"

South Korea's attempt to launch the Nuri launch vehicle, entirely built by South Korean designers, failed but was deemed "partially successful." The rocket managed to reach the design altitude, but could not bring the cargo into orbit.

On Thursday, October 21, 2021, South Korea launched the first fully domestic Nuri launch vehicle from the Naro Cosmodrome in Jeollanam-do province. As a load, the rocket was supposed to launch a satellite mockup with a mass of 1,5 tons into the calculated orbit. The first and second stages of the rocket worked normally, the engines of the third stage shut down prematurely.

As stated at the Korea Aerospace Research Institute (KARI), the rocket managed to reach the target height of 700 km and even separate the payload, but due to the premature shutdown of the third stage engines, the satellite mock-up failed to enter the target orbit. Nevertheless, the attempt was recognized as "partially successful".

(...) instead of the calculated 521 seconds, it worked for 475 seconds and was unable to pick up the speed of 7,5 kilometers per second required to enter orbit

- said the institute.

The new KSVL-II Nuri missile is the first fully developed in South Korea, unlike the first KSLV-I Naro-1, in the development of which Russian specialists took part. Nuri is a three-stage liquid propellant rocket engine that uses kerosene and oxygen as fuel. The mass of the rocket is 200 tons with a length of 47,2 meters. According to calculations, Nuri is capable of launching a cargo weighing 300 tons into a 2,6-km orbit. A new launch is planned for May next year, again using a mock-up as a payload.

Recall that until 2020 South Korea had the right to develop space rockets only on liquid fuel in accordance with an agreement with the United States on restrictions on the development and use of rockets. Seoul received permission to develop solid-propellant engines for space launch vehicles only last year.

Comments

[prior]

The South Korean launch vehicle Nuri has partially successfully put another 1.5 tons of space debris into orbit.

[Finches]

Eun, learning about the "partial" success of his neighbors, showed his Hwaseong from the window of his office to the South Koreans ...

[Shurik70]

Quote: Finches

Eun, learning about the "partial" success of his neighbors, showed his Hwaseong from the window of his office to the South Koreans ...

August 31, 1998 - successful launch of the North Korean satellite

[Blackmokona]

Well, how successful, according to Russia, he failed

31.08.1998/1/1 from the Donghe (Musudan-ni) cosmodrome in Hamgyong-buk-do province, the first North Korean launch vehicle Paektusan-4000 was tested, during which an attempt was made to launch the Gwangmyeongseong-XNUMX satellite into a near-earth orbit. The launch of the satellite into orbit was declared by the DPRK to be successful, but not confirmed in the world - according to observers, the third stage of the rocket with the satellite fell XNUMX km east of the DPRK;

The next one, too, is gone

05.04.2009/2/2 from the Donghae cosmodrome with the help of the "Eunha-13" launch vehicle, an experimental artificial communication satellite "Gwangmyeongseong-14" was launched [15] The DPRK declared the satellite to be in orbit again successful, but in the end it was not confirmed again in the world ... According to the observation systems of the USA, Japan, South Korea, the third stage of the launch vehicle did not separate, and the rocket with the satellite again fell into the Pacific Ocean. [XNUMX] At the same time, the Ministry of Foreign Affairs of the Russian Federation announced the successful launch of the satellite [XNUMX], however then the Ministry of Defense of the Russian Federation announced that the Russian means of control of outer space did not record the satellite in orbit[16].

As a result, for all attempts, only one satellite was successfully launched, which is as simple as possible and performs only prestigious functions. Weighing 100 kg. There were no more other successes.

[donavi49]

But it was originally trash. As well as Angara blanks for example. Or any dummy load on the first run.

Koreans here:
1) Immediately launched the declared maximum speed. If they put out a ton, then the thrust even of the one that went to 3 steps would be enough to round off the orbit.
2) We launched our first 100% rocket, with our interesting open gas engines.

3) This rocket is only part of Korea's larger plan in space. Ahead of the mission to asteroids, robots on the moon by the 30th year, Korean astronauts on Getuway (and on the moon too), as well as the withdrawal of one already approved (for 600 spacecraft - constellation) and another mega-constellation of the next generation in 8k satellites are now being prototyped ...

[Bad_gr]

Quote: donavi49

with their interesting open gas engines.

And at the third stage, it seems, was a Ukrainian engine.

..... As a result of previous negotiations between the companies, a contract was signed for the manufacture and supply of YUZHMASH balloons (containers operating under high pressure) in the amount of 50 pieces, with a capacity of 35 and 130 liters. An agreement was also signed for the manufacture of a layout of a liquid-propellant rocket engine RD-8.
The first batch of balloons has already been manufactured and delivered to the customer ...

https://yuzhmash.com/ru/raketno-kosmicheskaya-tematika-obedinila-ukrainu-i-yuzhnuyu-koreyu/ (news from 13.07.2016)

".... Work with KARI is carried out by UMZ in two directions: for the manufacture of turbopump units and a set of dummy valves for the engine RD-8, as well as for the manufacture of balloons with a capacity of 130 and 25 liters. In 2017, we signed another, new contract for the production of balloons, "he said, stressing:" The experience of successful cooperation has become the basis of the interest of our South Korean partners in expanding partnership. Today we are negotiating a contract for the manufacture of a tank for a launch vehicle (LV), as well as a contract for the manufacture of elements of a liquid-propellant rocket engine for the South Korean launch vehicle KSLV-II ".....

https://delo.ua/business/juzhmash-nameren-uvelichit-postavki-raketno-kosmicheskoj-tehniki-337479/

[donavi49]

No, it has its own (well, declared Korean) KRE-007 vacuum engine.

If anything, according to the specified ones, they took 742 km, but could not bring it to a stable one, the pig fell into the ocean after flying 1000 km to Perth (Australia).

[for]

Quote: prior

1.5 tons of space debris.

In Russia, they named the price of Rogozin's jewelry bust. It will be from the "remnants of missiles"

The Russian company Caviar told the Hi-Tech.Mail.ru portal that it is ready to make a jewelry bust of Dmitry Rogozin, head of Roscosmos. In a single copy, it would cost 250 rubles. In this case, the bust will be made with silver plating and with a gilded detachable part (for example, glasses or a tie).
https://hi-tech.mail.ru/news/55828-v-rossii-nazvali-cenu-yuvelirnogo-byusta-rogozina-ona-budet-iz-ostatkov-raket/

[knn54]

Eh, did not live to see the creation of the monument to Rogozin Faberge.

[slipped]

Meanwhile, Rogozin, in the most vile way, spit on the desire of the Caviar company, which is undoubtedly a responsible foreign agent, began a malicious roll of the head fairing on the worthless Russian cargo carrier Progress, which, like a cattle, still allows this useless MEKeeS to fly.

[rocket757]

The rocket managed to reach the design altitude, but could not bring the cargo into orbit.

Failures also happen to those who are not new to this business ...

[Cananecat]

They littered ... and who will clean up after themselves? Or did the stage burn out in the PSA?

[Fungus]

High-tech countries have been launching rockets into space for a long time. Some with people. And South Korea will eventually be.

[rotmistr60]

ended in failure but was declared "partially successful".

Strange wording. As partly pregnant - not pregnant, but could be under certain conditions.

[Blackmokona]

For example, 150 tests are planned during the launch. 145 are completely successful, 5 have failed.
Or, for example, I remember the partially successful launch of Falcon-9 for a long time. The main load was successfully delivered to orbit, the secondary load was lost.

[rotmistr60]

For example, 150 tests are planned during the launch. 145 completely successful, 5 failed

150 tests per launch? Something you are modest with the numbers. Why not give 350,349,1 respectively. As I understand it (from the article) this was the first launch of this rocket.

[Blackmokona]

Falcon-9 has over 1000 telemetry channels. Challenges and check points can be just a lot.

[donavi49]

2 stages have worked 100% normally.
Stage 3 had some anomalies and turned off a little earlier, the problem is being analyzed now.

The load of 1,5 tons (a maximum of 700 km for this rocket) reached the milestone of 700 km, but there was not enough energy and speed to round out the orbit.

Well, again, at night the Cosmos-2551 of the September launch from Plesetsk burned down. Successful start = load eventually collapsed over Canada, never getting into work.

Although:
Of the Ministry of Defense of the Russian Federation using the Soyuz-2.1V carrier rocket on September 9, 2021 at 22:59 Moscow time from the launcher (PU) No. 4 of site No. 43 of the State Test Cosmodrome of the Ministry of Defense of the Russian Federation (Cosmodrome Plesetsk) in the Arkhangelsk Region combat crew of the Space Forces of the Aerospace Forces.

The launch was officially announced as a success. Ministry of Defense of Russia On September 10 it announced that “the launch of the Soyuz-2.1V launch vehicle and the launch of the spacecraft into orbit were carried out in the normal mode”, that “the spacecraft was launched into the target orbit and accepted for control of ground-based facilities of the Main Testing Space Center named after G.S. . Titov of the Space Forces of the Aerospace Forces ", and that" a stable telemetric connection has been established and maintained with the spacecraft. The onboard systems of the spacecraft are operating normally ".

[kostavit]

You did not understand anything. Kosmos-2551 is a military satellite. His task was to test the possibility of dropping a bomb over North America. Everything worked out !

[Cosm22]

Some of the victorious reports of the RF Ministry of Defense or Mr. Rogozin should not be paid attention at all.
What kind of stable telemetry communication could we talk about if the transmission of signals from the Kosmos-2551 ESCA disappeared almost immediately after launch? Due to the impossibility of making a maneuver to correct the orbit, the EMC left it and burned down. Alas, Russia has not yet increased its optical reconnaissance capabilities.

[slipped]

Quote: donavi49

Although:

So you could leave it. The rest is solid crap.

Quote: donavi49

Well, again, at night the Cosmos-2551 of the September launch from Plesetsk burned down.

Suddenly Bart Hendrix doesn't believe it. Do you believe Bart Hendrix?

"We shouldn't exclude the possibility that that the object which re-entered today is in fact the rocket stage. That is the most logical interpretation of the orbital data. So possibly the two objects were wrongly cataloged (Object A is the rocket stage and Object B is Kosmos-2551). Not sure if there are any precedents for that though.

Kosmos-2525, the first EMKA satellite, didn't make its first maneuvers until about 2 months into the mission when it had descended to about 270 km. So I suggest we keep a close eye on Object B to see if it doesn't change its orbit in the coming days or weeks. In a best-case scenario, the Russian Ministry of Defense may even issue a press release to dispel reports that the satellite has re-entered, but that is not very likely to happen. "

[Gvardeetz77]

The hand of our space leader is felt, apparently he got a job part-time or jiggles during non-working hours

[Kostadinov]

Quote: BlackMokona

As a result, for all attempts, only one satellite was successfully brought out, which is the simplest possible and performs only prestigious functions. Weighing 100 kg. There were no more other successes.

The DPRK has already successfully orbited two satellites in 2012 and 2016 recognized by the whole world. With this, no one officially helped her.
The Protectorate (SC) received massive technical assistance from Russia and the United States and by the end of 2021 managed to "partially" successfully or really completely unsuccessfully feed on the satellite. Without massive external assistance, the protectorate could not and think about satellites by 2050.

[Blackmokona]

DPRK is helping China. And of the two satellites, only one is working, with minimal functionality. The second rotates chaotically and does not emit radio signals

[well]

"the rocket managed to reach a given height of 700 km ......." What, really ?????? !!!

[Kostadinov]

1. Kwanmenson 3-2 entered polar orbit 12 December 2012 Confirmed by NORAD 39026, COSPAR ID 2012-072A.
2. Kwanmenson 4, entered into a sun-synchronous orbit of 500 km on February 7, 2016, NORAD 41332, COSPAR ID 2016-009A.
"Partially" successful, according to NORAD, hit the launch of Kwanmenson 1 in December 1998. Then, too, the third stage of the launch vehicle did not work and the satellite did not enter orbit. So the protectorate is currently only 33 years behind, despite all the outside assistance.

[garik77]

Disgracers. Let them learn from the northerners or something

[garik77]

Quote: BlackMokona

DPRK is helping China. And of the two satellites, only one is working, with minimal functionality. The second rotates chaotically and does not emit radio signals

The DPRK bought technology from the Hawks, their missiles, incl. long-range ballistic ones, with some important elements suspiciously reminiscent of the Soviet ones produced at Yuzhmash

[unhappy]

Sovereign country received permission to create solid-propellant missiles
Hairy glass and green whistle ...