South Korea's first domestic launch vehicle failed to launch. Is the Korean space age coming?

South Korea's first domestic launch vehicle failed to launch. Is the Korean space age coming?

South Korea's first domestic launch vehicle failed to launch. Is the Korean space age coming? The Romanian three-stage rocket flying the Korean flag failed to be successfully launched into low orbit after flying 16 minutes from the launch site. South Korea's first domestic launch vehicle failed to launch. Is the Korean space age coming?

South Korea's first domestic launch vehicle failed to launch. Has the space age come in Korea? 1 On Thursday, South Korea successfully launched its first self-developed space rocket, marking a leap in its space program.

The "Lao Luo" (meaning "world" in Korean) rocket weighs 200 tons and is 47.2 meters long. It is always equipped with six liquid fuel engines. After the United States lifted the restrictions on rocket development in South Korea since the Cold War, this project costing 10.9 trillion won has been developed for10 years.

"Due to long-term political problems, South Korea's modern rockets cannot invest more in rocket research and development." Han Xiangyu, Minister of Reliability, Safety and Quality Assurance of Korea Aerospace Research Institute, said.

South Korea's goal is to send satellites into geostationary orbit about 36000 kilometers from the equator of the earth. It also plans to launch a probe to land on the moon by 2030.

Previous rocket launches in this country have experienced many delays and failed tests.

Last year, the Falcon 9 rocket of Space Exploration Technology Company put North Korea's first dedicated military communication satellite into orbit from the Kennedy Space Center in Florida.

However, after flying 16 minutes from the launch site, the three-stage "Lao Lao" rocket with the North Korean flag failed to successfully send a fake satellite weighing 1.5 tons into a low orbit 700 kilometers above the Earth.

"Ronald rocket completed its flight procedure. I'm proud of it. But unfortunately, it failed to fully achieve its goal. " President Moon Jae in said in a statement, "It has successfully reached the target height of 700 kilometers above the earth, which is already a great achievement."

The launch, supervised by the Korea Aerospace Research Institute (KARI), is one of a series of tests to ensure that the rocket is reliable enough to put a real satellite into orbit in May next year.

Li Chungen, a senior researcher at the Korea Institute of Science and Technology Policy, said: "This is a huge leap for South Korea in its efforts to own its own launch vehicle."

South Korea's first domestic launch vehicle failed. Has the space age come in Korea? The launch vehicle KSLV-II independently developed by South Korea was launched.

Overseas network101October 2 1 According to Yonhap News Agency, the Minister of Science, Technology, Information and Communication of Korea, Lin 2 1, held a press conference, announcing that the "World" launch vehicle (KSLV-II) independently developed by Korea had completed all flight procedures normally and successfully put1.

According to reports, the "World" carrier rocket is 47.2 meters long and weighs 200 tons. It was launched at Luolao Space Center in Gaoxing County, Jeollanam-do at 2 1 day 17. After primary and secondary separation, fairing separation and secondary main engine shutdown, the tertiary engine continued to fly normally after ignition, and flamed out and fell off. The rocket was successfully separated from the satellite on 15 and 17.

According to the data analysis, the third stage engine stopped working early, which made it impossible to send the satellite into the scheduled orbit. (Overseas network Yao Kaihong)

2 1 local time 17, the "World" carrier rocket independently developed by South Korea was launched at the Luo Lao Space Center. About an hour after the launch of the rocket, South Korean President Moon Jae in announced at the scene that although the launch vehicle "Shi" had completed all flight procedures, it failed to send the satellite into the scheduled orbit.

According to Korea Herald, the largest English-language newspaper in South Korea, officials of the Korea Aerospace Research Institute (KARI) said before the launch that the probability of successful test firing was only 30%.

"Korea Space Launch Vehicle" (KSLV)-2 is a national launch vehicle made in Korea, which is divided into three stages, with a diameter of 3.5 meters, a height of 47.2 meters and a weight of 200 tons. 600-800km low earth orbit carrying capacity1.5t, 300km orbit carrying capacity 2.6t.. The arrow was named "Nuri" on September 20 18. Liquid oxygen/kerosene propellant is used in all three stages of the rocket, including four KRE-075(75 tons) engines in the first stage, one KRE-075 engine with vacuum expansion nozzle in the second stage and one KRE-007(7 tons) engine in the third stage.

KARI successfully launched a KSLV-2 test arrow at the end of 20181to evaluate key components such as domestic engines. The engine worked 15 1 sec in flight. The maximum flying height of the rocket is 209 kilometers. The test arrow is a single-stage aircraft with only one KRE-075 engine. It was originally planned to set up two stages to evaluate the upper stage engine of KRE-007, but after the second stage, it was changed to a quality simulator.

This is South Korea's first attempt to launch into orbit in nine years. After two consecutive defeats in August and June, 20 10, 2008, Han successfully launched the "Science and Technology Star" 2C with the KSLV- 1 ("Luo Lao" 1) rocket at Luo Lao Space Center on October 30, 2008. However, KSLV- 1 is a one-stage and two-stage rocket, the first stage of which is provided by Russia, and its low-orbit carrying capacity is only 100 kg. After that launch, it was announced to be retired. Its first stage is basically the same as the first stage of URM-/KOOC-0/of Russian angara rocket, but the engine with lower performance is RD-/KOOC-0/5/KOOC-0/,instead of RD-/KOOC-0/9/KOOC-0/used in angara. The second stage adopts the solid engine developed by Korea itself.

The rocket stands on the launch pad.

The launch carried a simulated payload weighing 1.5 tons, which is a mass simulator, or pseudolite. KARI8 said at the end of August that the second test launch scheduled for May next year at 19 will carry a fake satellite weighing 1.3 tons and a performance verification satellite weighing 200 kilograms. The goal of these two test flights is to put the satellite into a sun-synchronous orbit at a height of 700 kilometers.

The KSLV-2 development project took nearly 65,438+02 years, aiming at enabling South Korea to launch independently and compete in the international market. The rocket development work has been participated by Korea Aerospace Corporation, among which Hanwha Aerospace Corporation is responsible for manufacturing engines, Korea Aerospace Industry Corporation (KAI) is responsible for rocket assembly, and Hyundai Heavy Industries is responsible for the construction of launch pads. Including the construction of the launch site, the development cost is estimated to be 1.96 trillion won (1.70 billion US dollars).

Lin, Minister of Science, Information and Communication Technology of South Korea, said before the launch that "the world" is "China's own launch vehicle developed by many Korean researchers and enterprises with sweat and tears", and I believe this launch will become "a milestone in the history of China's space development".

Korean engineers and technicians are working hard to develop a lighter and more powerful engine model of KRE-075, so as to increase the typical orbital payload capacity of KSLV-2 from 1.5 tons to 2.8 tons. Han also plans to develop a modified version of KSLV-2, which can send satellites into geosynchronous orbit. In the first stage of modification, four KERE-090 engines will be used, and four boosters will be bundled, each with one KERE-090 engine; A KERE-090 will be used in the second stage and a KERE-0 10 engine will be used in the third stage.

Korea's aerospace industry has made great progress in the past decade, and the level of satellite manufacturing has been significantly improved. South Korea's first two domestic geostationary orbit satellites were launched in 20 18 and 2020, respectively, for weather monitoring and marine research missions. The Korean Pathfinder Lunar Orbiter (KPLO) is currently under construction and is scheduled to be launched by the space exploration company Falcon 9 rocket next year. It will use scientific instruments from South Korea and the United States to explore the moon.