Tag: Nuri

South Korea is in final negotiations to cancel two Russian launch contracts

8:44 am

As has been expected since the beginning of Russia’s invasion of the Ukraine, South Korea is in the process of canceling two Russian launch contracts, with the negotiations apparently now in the final stages.

“The Korea Multipurpose Satellite 6 and the next-generation mid-size satellite Compact Advanced Satellite 500-2, both developed by Korea, were initially scheduled to be launched into space using Russian launch vehicles, but due to the war between Russia and Ukraine and the subsequent international sanctions against Russia, there were uncontrollable circumstances that prevented the use of Russian launch vehicles,” the Ministry of Science and ICT said in a statement.

“Since then, Korea has been negotiating with Russia on the terms of termination of the satellite launch contract and it is currently being finalized.”

South Korea has already found a different rocket for the first satellite, scheduled for launch on Arianespace’s Vega-C rocket when it resumes flights in April 2024 (after completing upgrades resulting from a December 2022 launch failure). As for the second satellite, no public decision has yet been announced, though contract bidding has been on-going.

Meanwhile South Korea is accelerating development of its own Nuri rocket, which it has successfully launched two times already.

Russia in turn no longer has any international customers for its rockets. Its invasion of the Ukraine has cost it hundreds of millions of dollars of lost business, all of which will likely not return for decades.

Leave a comment

South Korea successfully launches its Nuri rocket for the second time

12:43 pm

The new colonial movement: South Korea today successfully launched its home-built Nuri rocket for the second time, lifting off from a coastal South Korean spaceport and carrying eight smallsats.

This was South Korea’s first launch this year. The leaders in the 2023 launch race remain the same:

34 SpaceX
19 China
7 Russia
4 Rocket Lab

The U.S. still leads China 38 to 19 in the national rankings, and the entire world combined 38 to 33. SpaceX by itself now trails the entire world, including American companies, 34 to 37.

Hat tip to BtB’s stringer Jay for reminding me of this launch.

Leave a comment

Fire in South Korean rocket facility

9:55 am

South Korea today reported that a fire had broken out in its Naro Space Center during work on a turbopump for a next generation rocket.

The fire started at 3:25 p.m. Tuesday at the Naro Space Center in the country’s southern coastal village of Goheung and was extinguished about an hour later, according to the Ministry of Science and ICT. The ministry said some experimental equipment was affected by the fire but reported no injuries.

The fire broke out while researchers were conducting an experiment to develop a 10-ton turbopump that injects fuel into an engine for a new space rocket, codenamed KSLV-III.

The KSLV-III will be an upgrade of the KSLV-II, also called Nuri, which has a launch scheduled right now in May. The KSLV-III is part of a $1.6 billion government project to develop this new rocket by 2032.

2 comments

South Korea successfully launches its Nuri rocket

9:04 am

The new colonial movement: South Korea today successfully launched its home-built Nuri rocket, placing a test satellite, a dummy satellite, and four university cubesats into orbit.

The government program to build this rocket began in 2010 and cost $616 million, though not all of that money was devoted to the rocket. South Korea’s space agency has four more launches planned through 2027.

This was obviously South Korea’s first launch this year. The leaders in the 2022 launch race thus remain the same:

26 SpaceX
18 China
8 Russia
3 Rocket Lab
3 ULA

American private enterprise now leads China 35 to 18 in the national rankings, and leads the entire world combined 35 to 30.

One comment

South Korea reschedules launch to June 21 after fixing sensor issue

9:28 am

The new colonial movement: South Korea space officials from its KARI space agency have now rescheduled the second test launch of their home-built Nuri rocket for June 21st, after replacing a fuel sensor on the rocket that was not working.

ARI said engineers identified the problematic part within the sensor and replaced it, and Kwon said they also found no other problems after inspecting the rest of the rocket. Kwon noted that the rescheduled launch date could be subject to change depending on weather conditions.

This will the second time KARI has attempted an orbital launch of Nuri, with the first experiencing an upper stage failure in October 2021.

Leave a comment

South Korea postpones tomorrow’s second test launch of its Nuri rocket

9:57 am

The new colonial movement: Because of unexpected sensor reading in the oxygen tank as the rocket was lifted upright at the launch pad, South Korea has postponed its planned launch tomorrow of its home-built Nuri rocket.

According to KARI [South Korea’s space agency], readings of the oxidizer tank sensor normally change when the rocket is being erected. Readings on Nuri’s sensor, however, did not show any change during the process. “The sensor itself could be problematic, or it could be an issue with the cable or the terminal box,” the official said.

This launch would have been the second attempt to complete an orbital launch, with the first Nuri launch failing in October 2021 when tanks inside the third stage broke free during launch.

Leave a comment

South Korea to build its own unmanned lunar lander

9:31 am

The new colonial movement: The government of South Korea has begun a project to build its own unmanned lunar lander, scheduled for launch sometime in the 2030s.

South Korea presented an action plan to develop a lunar lander weighing more than 1.5 tons that would carry out scientific research on the surface of the moon in the 2030s. The project is to begin in 2024 after a preliminary feasibility study.

The Ministry of Science and ICT would form a working group of industry-academic experts to conduct research on a lunar lander and draw up strategies and detailed plans by August 2022. It is a follow-up project to launch a lunar orbiter in August 2022. The lunar lander will be lifted by a next-generation homemade rocket.

The goal is to encourage the country’s own aerospace industry. The working group will spend the next month recruiting South Korean companies to join the project.

South Korea however has to first get its own homemade rocket, Nuri, to successfully launch. The first launch attempt in October 2021 failed, and the second has been delayed to fix the cause.

Leave a comment

South Korea pinpoints cause of October launch failure

9:39 am

The new colonial movement: South Korea’s space agency KARI has completed its investigation of the launch failure in October of its first entirely home-built Nuri rocket, revealing that the support structures for the rocket’s helium tanks were designed incorrectly, and allowed the tanks to break free during launch.

“The support structures holding helium tanks inside the third-stage oxidizer tank were not properly designed to account for a force referred to as buoyancy,” KARI said in a Dec. 29 statement. Buoyancy, the upward force exerted by a fluid that pushes an object, rises along with a rocket’s altitude, which was not accounted for, according to KARI.

The helium tanks with the faulty anchors were inside the upper stage’s oxidizer tank, which was filled with liquid oxygen needed for the rocket’s ignition. With the helium tanks coming loose, they disrupted pipelines within the oxidizer tank and led the liquid oxygen to leak, resulting in early termination of the ignition, KARI explained.

The helium is used to keep the tank pressurized as it uses up its oxygen so that oxygen will continue to flow to the engine. Thus, they sit inside the oxygen tanks, and when they came loose they damaged its internal pipes.

Though they can fix the problem, it will likely cause a delay in the second Nuri launch attempt, presently scheduled for May.

One comment

South Korean lawmaker proposes his country build a reusable rocket

9:35 am

The new colonial movement: Following a meeting with high space officials, a South Korean lawmaker announced yesterday that his country is now planning the design and construction of a reusable rocket.

“Starting next year, the development of a high-performance reusable rocket with liquid-fueled 100-ton thrust engines will begin,” said Rep. Cho Seung-rae of the ruling Democratic Party of Korea, who represents the committee. “Having such a liquid-fueled high-performance rocket engine is necessary [for South Korea] to successfully fulfill the missions of launching a [robotic] lunar lander by 2030 and building the Korea Positioning System by 2035 on its own.”

Cho said the envisioned engine will be “capable of controlling its thrust with four consecutive reburns,” a function which he said would “significantly slash launch cost.” The lawmaker said the government will carry out two-year preliminary research on the issue, with the budget of 12 billion won ($10.2 million) in hand.

South Korea has yet to successfully launch its own homebuilt Nuri rocket, with the first test flight failing less than a month ago.

In addition, this announcement was a surprise, as the budget request for ’22, made in September, had not included it. It appears that this lawmaker and those high space officials teamed up to propose it. We shall see if it gets into the final budget.

Leave a comment

South Korea’s new Nuri rocket fails during first launch

8:33 am

The new colonial movement: South Korea’s new Nuri rocket, that country’s first homegrown rocket, failed during launch early today when the payload did not reach its proper orbit.

It appears that the third stage shut down prematurely.

They plan to try again in May ’22.

For a first launch attempt this was actually a large success. Getting the first and second stages to work properly is generally the hardest part of any rocket launch.

3 comments

South Korea to launch its own rocket in October

9:47 am

The new colonial movement: South Korea is now targeting October 21, 2021 for the first test launch of its home-built Nuri rocket.

The October flight will be South Korea’s first domestic orbital launch attempt in more than eight years. On Jan. 30, 2013, a Naro-1 rocket placed the STSAT-2C technology demonstration satellite into low Earth orbit.

It was the final of three launches for now retired Naro-1, which consisted of a Russian Angara first stage with a downgraded engine and a South Korean developed solid-fuel upper stage. Two previous Naro-1 launches failed in 2009 and 2010.

They have also scheduled a follow-up test launch in May ’22, assuming all goes well on this first test launch.

Leave a comment

South Korea test flies its first home-built rocket engine

8:54 am

The new colonial movement: South Korea yesterday successfully completed a suborbital test flight of its first home-built rocket engine.

The 75-ton-thrust engine was fired up and launched the first-stage rocket at the Naro Space Center in Goheung, South Jeolla Province, at 4 p.m., as part of the country’s long-term project to launch the Korea Space Launch Vehicle-2 (KSLV-2), dubbed Nuri, in 2021.

The Ministry of Science and ICT said it achieved an engine burn-time of 151 seconds, which exceeded its goal. It earlier said the test launch would be considered a success if the engine maintained a burn-time of about 140 seconds. The test rocket also reached a maximum altitude of 209 kilometers, 319 seconds after liftoff, and safely landed in international waters southeast of Jeju Island.

The planned orbital launch in 2021 makes this one of many new rockets, from both countries as well as private companies, set to become operational in the early 2020s. It looks like that decade will be especially exciting for space.

Leave a comment