North Korea performs key test to build more threatening ICBM

Dec 15, 2022, 4:25 AM | Updated: Dec 16, 2022, 12:50 am
In this photo provided by the North Korean government, North Korean leader Kim Jong Un, right, supe...

In this photo provided by the North Korean government, North Korean leader Kim Jong Un, right, supervise what it says a test of "high-thrust solid-fuel motor" at the Sohae Satellite Launching Ground in North Korea Thursday, Dec. 15, 2022. Independent journalists were not given access to cover the event depicted in this image distributed by the North Korean government. The content of this image is as provided and cannot be independently verified. Korean language watermark on image as provided by source reads: "KCNA" which is the abbreviation for Korean Central News Agency. (Korean Central News Agency/Korea News Service via AP)

(Korean Central News Agency/Korea News Service via AP)

              In this photo provided by the North Korean government, North Korean leader Kim Jong Un, right, supervise what it says a test of "high-thrust solid-fuel motor" at the Sohae Satellite Launching Ground in North Korea Thursday, Dec. 15, 2022. Independent journalists were not given access to cover the event depicted in this image distributed by the North Korean government. The content of this image is as provided and cannot be independently verified. Korean language watermark on image as provided by source reads: "KCNA" which is the abbreviation for Korean Central News Agency. (Korean Central News Agency/Korea News Service via AP)
            
              This photo provided by the North Korean government, shows what it says a test of "high-thrust solid-fuel motor" at the Sohae Satellite Launching Ground in North Korea Thursday, Dec. 15, 2022. Independent journalists were not given access to cover the event depicted in this image distributed by the North Korean government. The content of this image is as provided and cannot be independently verified. Korean language watermark on image as provided by source reads: "KCNA" which is the abbreviation for Korean Central News Agency. (Korean Central News Agency/Korea News Service via AP)
            
              In this photo provided by the North Korean government, North Korean leader Kim Jong Un supervise what it says a test of "high-thrust solid-fuel motor" at the Sohae Satellite Launching Ground in North Korea Thursday, Dec. 15, 2022. Independent journalists were not given access to cover the event depicted in this image distributed by the North Korean government. The content of this image is as provided and cannot be independently verified. Korean language watermark on image as provided by source reads: "KCNA" which is the abbreviation for Korean Central News Agency. (Korean Central News Agency/Korea News Service via AP)

SEOUL, South Korea (AP) — North Korean leader Kim Jong Un supervised the test of a “high-thrust solid-fuel motor” for a new strategic weapon, state media reported Friday, a development that could allow him to possess a more mobile, harder-to-detect arsenal of intercontinental ballistic missiles that can reach the mainland U.S.

Thursday’s “static firing test” of a missile engine at the country’s northwest rocket launch facility was the first of its kind in North Korea, the official Korean Central News Agency reported. It said that the test provided “a sure sci-tech guarantee for the development of another new-type strategic weapon system.”

Kim praised scientists and technicians over the test, saying he expected the new weapon would be built “in the shortest span of time,” KCNA said.

North Korea is likely referring to a solid-fueled ICBM, which is among an array of high-tech weapons systems that Kim vowed to introduce during a major ruling Workers’ Party conference early last year. Other weapons systems Kim promised to manufacture include a multi-warhead missile, underwater-launched nuclear missiles and spy satellites.

The latest motor test showed that North Korea is determined to carry out Kim’s vows to develop such sophisticated weapons systems despite its pandemic-related domestic hardships and U.S.-led international pressures to curb its nuclear program. In recent months, North Korea has test-fired a barrage of nuclear-capable ballistic missiles including last month’s launch of its developmental, longest-range liquid-fueled Hwasong-17 ICBM designed to carry multiple warheads.

Some experts say North Korea would eventually use an expanded arsenal to seek sanctions relief and other concessions from the United States.

“We’d been expecting a test of this kind for a while. Large-diameter, solid propellant rocket motors will enable North Korea to deploy larger submarine-launched missiles and, more importantly, more survivable and responsive intercontinental-range ballistic missiles,” said Ankit Panda, an expert with the Carnegie Endowment for International Peace.

“Unlike liquid propellant missiles, solid propellant missiles are fueled at the time of manufacture and can thus be released far more quickly in a war, all else being equal,” Panda said. “I wouldn’t be surprised if they’d look to do additional testing and development of these motors before moving to flight-testing.”

The fuel in solid-propellant rockets is already loaded inside, which helps to shorten launch preparation times, increase the weapon’s mobility and make it harder for outsiders to detect what’s happening before liftoff. North Korea already has a growing arsenal of short-range, solid-fueled ballistic missiles targeting key locations in South Korea, including U.S. military bases there.

KCNA said Thursday’s test was meant to verify specific technical features of the motor based on “the thrust vector controlling technology” and that the test showed all the technical indices proved its reliability and stability.

The technology refers to an ability to allow rockets to steer directions with the gimballing of exhaust nozzles, some analysts said after examining North Korea-dispatched photos of the test.

That’s a much more advanced method of thrust vectoring than a previous method traditionally used on the North’s shorter-range solid motor missiles, said Joseph Dempsey, research associate for defense and military analysis at the International Institute for Strategic Studies. He said while more efficient gimbaled nozzles may help maximize range, they are also more suitable for an ICBM.

“Testing a gimbaled nozzle could therefore represent an important technological waypoint toward North Korea’s stated goal of a solid motor ICBM,” Dempsey said. “However what other technical challenges remain and how far away a flight test of such a system is remains unknown.”

The North’s claim couldn’t be independently verified. But the country has likely experienced “considerable trials and errors” before Thursday’s test because it’s technologically more difficult to make large-sized solid-fueled motors than liquid-fueled ones, said Chang Young-keun, a missile expert at Korea Aerospace University in South Korea.

If the North’s motor test made the reported progress as it claimed, the country would be able to test-fire a solid-fueled ICBM within the first half of next year, Chang said. If North Korea uses the technology to build an ICBM-class missile that can be fired from a submarine, that would equip the North with a threatening secondary, retaliatory attack capability against the United States, he said.

The exact status of North Korea’s nuclear attack capability remains in secrecy, as all its intercontinental ballistic missile tests in recent years have been carried out at a steep angle to avoid neighboring countries.

Some experts speculate North Korea already has functioning nuclear-tipped missiles that can hit the entire U.S., given the number of years it has spent on its nuclear program. But others say country is still years away from acquiring such weapons, saying it has yet to publicly prove it has a technology to protect warheads from the harsh conditions of atmospheric reentry.

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North Korea performs key test to build more threatening ICBM