South Korea's pure domestic rocket has successfully launched, and the use of the national power has experienced twists and turns development

[Global Times special reporter Liu Haisheng Global Times reporter Fan Wei] accompanied by the successful lifting of the South Korean "World" launch -car rocket on the 21st, South Korean media are jubilant. South Korea's "Korean Daily" proudly announced that "this successful launch proves that South Korea is the seventh aerospace power that can launch practical satellites in the world."

South Korea's "World" rocket is lifted

"South Korea's sky is suddenly open"

Yonhap News Agency reported on June 21 that South Korea's first self -developed carrier rocket "World" was lifted off at the Luo Lao Aerospace Center, which is located in Holy County, Jeonano, South Korea at 4 pm. The main load PVSAT satellite and the simulation load and the four "cubic stars" satellites are sent to a scheduled solar synchronization track with a height of 700 kilometers. This launch task is successful.

South Korea's "Korean Daily" said on the 21st that there were 9 countries or organizations with independent satellite launch capabilities in the world: Russia, the United States, the European Union, China, Japan, India, Israel, Iran, and North Korea. Among them, only the top 6 can be sent to space with a practical satellite weighing more than 1 ton. Israel, Iran, and North Korea can only transmit satellites weighing less than 300 kg to space. With the launch of the "World", South Korea has also become the seventh aerospace country in the world to launch practical satellites to space.

At a press conference to announce the success of the "World" launch task, Li Zonghao, Minister of Science and Technology Information and Communications, said, "today we have ushered in a milestone in the field of science and technology in Korea. Great progress has been made. "

Prior to this success, the road to South Korea was twists and turns. South Korea's first purchase of Russian technology assembly "Luo Lao" rocket failed twice in succession, and it was not successful until the last time. Since then, South Korea has turned its focus to independent Rockets. At 4 pm on October 21, 2021, when the "Pure Domestic" "World" was conducted for the first track launch, because the third -level engine was shut down in advance, the 1.5 -ton simulation load was not sent to the scheduled track. The launch encountered failure.

Subsequently, the South Korean Aerospace Research Institute formed an investigation committee, and finally confirmed that the reason for the accident was "the structural design of the Rockets was unreasonable." After the improvement, the "World" was re -sent to the transmitting rack, but due to the data abnormal data of the liquid oxygen storage tank and encountering heavy winds, its second launch was delayed twice.

What is the performance of the "World"

Regarding this major breakthrough in South Korea in the field of aerospace, Huang Zhicheng, a Chinese air dynamicist and aerospace technology expert, said in an interview with the Global Times reporter on the 21st that the "World" was successfully launched. , To use dozens of companies, it also spent a lot of money.

According to the parameters published by the Korean Aeronautical Aerospace Research Institute, the "World" is a third-level structure liquid carrier rocket. The whole arrow is about 46.5 meters long, and the first parallel is connected with 4 75-ton KRE-75 liquid oxygen and oil engines. The 75-ton KRE-075 engine, the third level is a 7-ton KRE-007 engine, which can send 1.5 tons of loads into a near-ground orbit of 600-800 kilometers. Huang Zhicheng said that the overall technical ability of the "World" rocket is not strong. For example, the KRE-75 liquid oxygen and oil engine used by the first-class rocket is not very high. The vacuum environment is only 298 seconds, and the sea level is only 261.7 seconds, which limits the overall performance of the rocket. The "World" rocket's near -ground orbital carrier capacity is 2.6 tons, and the carrier capacity of the solar synchronization rail is 1.5 tons. Huang Zhicheng believes that the overall performance of the "World" rocket is better than the Long March 1 Rockets that launch my country's first artificial satellite, but lower than the level of the Long March 2 carrier rocket. Both rockets in China have retired. "Some commercial rockets developed by some private space companies in China are also slightly better than the" World 'Rockets. Above. "

Korean Rockets will aim at the moon next

South Korea's News News Agency said on the 21st that the launch of the "World" successfully indicated that South Korea has all the "industry -university -research" capabilities that have aerospace launch. The South Korean Aerospace Research Institute is responsible for the construction of infrastructure such as the "World" rocket core technology development and launch site. A large number of Korean heavyweight companies have participated in the development of rocket core components and subsystems, and the assembly of the carrier rocket.

South Korea's "Asian Economy" outsiders on the 21st that after the successful launch of the "World" of liquid fuel, the South Korean military will conduct a test of solid fuel rockets, hoping to simultaneously promote multiple purposes such as reconnaissance satellite launch, missile technology progress, and space exploration of space. After the U.S.'s lifting of the Korean missiles in May 2021, the Korean army immediately developed rockets promoted by solid fuel to launch reconnaissance satellites. The preparation time for North Korea's liquid fuel ballistic missiles is about an hour, while the preparation time for South Korea to launch solid fuel ballistic missiles is only 20 to 30 minutes. After all South Korean reconnaissance satellites are in place in the future, they can monitor sensitive areas such as North Korean missile positions in a 10-20 minutes interval frequency. Early warning capabilities and countermeasures will increase significantly.

"The" World "makes South Korea a aerospace power, and it is getting closer to South Korea's landing in the moon in 2031." South Korea's "Daily Economy" excitedly reported on the 21st that the new generation of South Korea's carrier rocket will have a 1.8 -ton moon orbit transportation Ability, and prepare to send the lunar car in 2031. Related links: Unveil the mystery of the Korean Aerospace Center

The Luo Lao Aerospace Center is the only space launch site in South Korea. It is located in the Luo Lao Islands of the Holy Royal County, Jeonan Road, south. It is currently under the management of the South Korean Aerospace Research Institute. South Korea's earliest decision to build its own aerospace launch site was South Korea's "National Universe Development Medium and Long-term Plan (1996-2015)". At that time, considering the area where the flying trajectory and the wreckage of the rocket may fall after the separation, the rocket was first excluded in the direction of China and Japan. After the expert's review, Dajingyi, Guizhou, west of Jeju Island, scored the highest score. However, due to the strong opposition of the local governments and residents at that time, the ultimately alternative of the Laoro Island of Jeon Non -Monthrous County was determined to be the construction location of the Korean Aerospace Center.

The South Korean Aerospace Center started in August 2003. In the early days, it was actually constructed through technical cooperation with Russia. It covers an area of ​​506 million square meters and a total investment of 265 billion won. It was finally completed in June 2009 and named Luo Lao Lao Lao Lao Aerospace Center.

At present, Luo Lao Aerospace Center can not only launch rockets, but also builds engine experimental equipment and satellite experimental buildings, launch assembly buildings, solid engine buildings, launch control centers, optical equipment and other aerospace infrastructure. The Luo Lao Aerospace Center also has science popularization and sightseeing functions. "Global Times" reporter once entered the Luo Lao Aerospace Center to visit. Just entering the Aerospace Center is the Cosmic Science Museum and Affiliated Square. Here you can increase your understanding of aerospace knowledge. You can also see the introduction of Luo Lao Aerospace Center. 4D image equipment was also built here in April 2011, attracting tens of thousands of tourists every year. The Luo Lao Aerospace Center Square at the gate of the Cosmic Science Museum has a certain distance from the Rocket launcher, and because of the blocking of a small hill, the rocket launch cannot be directly seen. However, before the rocket launch, the Korean media will set up a studio in the central square. The news anchor introduces and analyzes the comments here. Earlier, there were a large number of Russian experts in Luo Lao Aerospace Center, but now with South Korea's independent research and development efforts, Russian experts are relatively rare.

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