Engine Model: RD-0143. Manufacturer Name: RD-0143. Designer: Kosberg. Developed in: 1998-. Application: Vozdushnyy Start stage 2. Propellants: Lox/LNG. Thrust(vac): 343.000 kN (77,109 lbf). Isp: 372 sec. Chambers: 4. Country: Russia. Status: Design concept 1998-. Proposed variant of RD-0124, replacing kerosene by liquid natural gas. Selected for stage 2 of Vozdushnyy Start project by Kompomash.