Most powerful rocket engine

Built in the former USSR by the Scientific Industrial Corporation of Power Engineering in 1980, the RD-170 has a thrust of 7,890 kN 1,777,000 lb in space and 7,246 kN 1,632,000 lb at the Earth’s surface. It also has a turbopump rated at 190MW, and burns liquid oxygen and kerosene. The RD-170 powered the four strap-on boosters of the Energiya booster, launched in 1987 but now grounded by budget cuts.