Full Breakdown
South Korea Prepares Fourth Sea-Based Solid-Fuel Rocket Launch Amid Heightened Korean Peninsula Arms Race
By Drooid · · How we work
Core Event: Fourth Test of the “Mir” Solid-Fuel Rocket
South Korea’s military is set to conduct a fourth test launch of its domestically developed solid-fuel “Mir” space rocket from a barge off the southern coast of Jeju Island. The launch, planned for early November, follows a five-month postponement of the originally scheduled June attempt. The upcoming flight will employ the rocket’s full four-stage configuration, a step that could enable more frequent deployment of military reconnaissance satellites and a denser orbital network.
Background & Context
Seoul’s solid-fuel program began with a successful three-stage test in December 2023, which placed a roughly 100-kilogram Earth-observation satellite equipped with synthetic-aperture radar into orbit. The solid-fuel design allows the vehicle to remain fueled and ready for launch, a tactical advantage over liquid-fuel systems that require extensive preparation.
The Mir test series runs parallel to South Korea’s development of a hypersonic glide vehicle (HGV). An HGV was test-launched on Oct. 8, marking the first public acknowledgment by the Blue House of a previously classified hypersonic weapons program. President Lee Jae Myung observed that launch, and the Defense Ministry highlighted the use of domestically produced heat-resistant materials that prevented soot buildup on the vehicle’s surface.
North Korea has accelerated its own solid-propellant missile work, fielding the Hwasong-18 ICBM in April 2023 and progressing toward larger Hwasong-19 and Hwasong-20 missiles, the latter believed to be capable of carrying multiple warheads. The regime’s missile administration continues to showcase solid-fuel engine tests, most recently a drill on Dec. 18 2023.
Data & Statistics
- Satellite payload in the third test: ~100 kg (220 lb) SAR satellite.
- Solid-fuel rockets can stay fueled for extended periods, reducing launch preparation time.
- Hypersonic glide vehicles operate above Mach 5 (? 6,100 km/h).
- North Korea has conducted more than ten hypersonic missile tests since September 2021.
- The Mir rocket’s fourth launch will be the first to use a four-stage solid-fuel configuration.
Official Statements & Responses
The South Korean Defense Ministry asserted that the HGV’s heat-resistant coating successfully protected the vehicle during hypersonic flight, explaining the absence of soot on its exterior. The Blue House confirmed the existence of a hypersonic weapons development program and released photographs of President Lee Jae Myung observing the Oct. 8 test.
Criticism & Opposition
Jang Chang-ha, director-general of North Korea’s Missile Administration, questioned the authenticity of Seoul’s HGV test, stating that “it is hard to believe that [South Korea’s HGV] underwent hypersonic flight” and noting the unusually clean paint finish as evidence of a non-hypersonic trajectory.
Verbatim Quotes
- “It is hard to believe that [South Korea’s HGV] underwent hypersonic flight,” — Jang Chang-ha
Conflicting Reports & Gaps
South Korean officials maintain that the HGV achieved the required gliding-flight parameters on its first attempt, while North Korean officials dispute the claim, citing the lack of soot as proof that true hypersonic conditions were not reached. Neither side has released detailed performance metrics, leaving the comparative capabilities of the two Koreas’ hypersonic programs unverified.
What’s Next
South Korea aims to launch the Mir rocket’s full four-stage configuration in early November. Successful completion would demonstrate a rapid-response, sea-based launch capability and could accelerate the deployment of additional reconnaissance satellites, further shaping the strategic balance on the Korean Peninsula.