Melnikov N2O4/UDMH rocket engine. Part of the Yantar-2K spy satellite orbital propulsion system. In production. The orbital maneuvering system of the Yantar-2K consisted of one 11D430, four 11D431, four 11D446, and eight 11D428. Up to 40,000 ignitions.
Status: In Production. Thrust: 52 N (11 lbf). Burn time: 4,000 s.