(3rd LD) S. Korea launches homegrown space rocket after failed attempt last year

(ATTN: UPDATES with more info in paras 3-4; ADDS photo)

SEOUL, June 21 (Yonhap) -- South Korea on Tuesday launched its homegrown space rocket Nuri in the second attempt to put satellites into orbit, a critical mission for the country's space program.

The 200-ton Nuri, also known as KSLV-II, blasted off from the Naro Space Center in the country's southern coastal village of Goheung at 4 p.m., according to the Ministry of Science and ICT.

The ministry said the rocket completed its launch as planned and aerospace engineers were conducting detailed data analysis to determine whether the satellites successfully reached their orbits.

The result of the launch is expected to be announced at around 5:10 p.m.

South Korea had planned to launch the three-stage rocket last Thursday, but a technical glitch in the oxidizer tank sensor forced the country to postpone the liftoff.

In a meeting of Nuri's launch management committee Monday, the science ministry and the Korea Aerospace Research Institute (KARI) concluded Nuri's final technical inspection proceeded without any problems. The weather forecast also satisfied launch conditions.

South Korea's homegrown space rocket Nuri lifts off from Naro Space Center in Goheung, South Jeolla Province, southwestern South Korea, on June 21, 2022, as the country makes a second attempt to put satellites into orbit. (Pool photo) (Yonhap)

A successful launch would make South Korea the seventh country in the world to have developed a space launch vehicle that can carry a more than 1-ton satellite, after Russia, the United States, France, China, Japan and India.

It would also mean South Korea will now have secured the key independent technology for developing and launching space rockets carrying homegrown satellites, opening up a new era in the country's space program.

Tuesday's launch would be Nuri's second liftoff after its first attempt ended in failure.

In October, Nuri successfully flew to its target altitude of 700 kilometers but failed to put a dummy satellite into orbit, as its third-stage engine burned out earlier than expected.

KARI engineers reinforced an anchoring device of the helium tank inside Nuri's third-stage oxidizer tank.

South Korea's homegrown space rocket Nuri lifts off from Naro Space Center in Goheung in southwestern South Korea on June 21, 2022. (Pool photo) (Yonhap)

This time, Nuri was loaded with a 162.5-kilogram performance verification satellite meant to test the rocket's capabilities, and four cube satellites, developed by four South Korean universities for academic research purposes, along with a 1.3-ton dummy satellite.

South Korea, a relative latecomer to the global space development race, has invested nearly 2 trillion won (US$1.8 billion) in building Nuri since 2010. South Korea's rocket launches ended in failures in 2009 and 2010.

In 2013, South Korea successfully launched its first-ever Naro space rocket, though its first stage was built in Russia.

The country aims to conduct four additional Nuri rocket launches by 2027. South Korea has also launched a preliminary feasibility study for the successor to the Nuri with the goal of sending a lunar landing module to the moon in 2031.