The RD-170 is a powerful rocket engine developed in the Soviet Union during the 1960s. It is notable for being one of the most powerful liquid-fueled rocket engines ever built, producing around 17,000 pounds of thrust. The engine uses a unique design that incorporates four combustion chambers, allowing for efficient fuel use and high performance. This engine was primarily designed for use in the Zenit launch vehicle, which was intended to carry payloads into low Earth orbit. The RD-170's innovative technology has influenced the development of subsequent rocket engines, making it a significant milestone in aerospace engineering.