Solid-fuel space launch vehicle

Mir (Korean: 미르), commonly referred to by the abbreviation GYŪB (Korean: Goche Yeonlyo Uju Balsache or 고체연료 우주발사체), is an orbital booster developed by the state-run Agency for Defense Development (ADD). It is based on solid propellant stages, with a liquid-fuel post‑boost stage (PBS), designed to deploy small satellites—particularly synthetic aperture radar (SAR) reconnaissance payloads—into low Earth orbit as part of the country's independent space-based surveillance capability. ADD plans the first launch of a complete version of the launcher, capable of placing a one-ton satellite into a sun-synchronous orbit, in 2027. By 2032, the military expects to have a version capable of placing 7 tonnes into a sun-synchronous orbit and 3.7 tonnes into a geostationary transfer orbit.