The Ivchenko AI-20 is a turbojet engine designed in the Soviet Union, primarily used in various aircraft during the 1950s and 1960s. It is known for its reliability and efficiency, making it suitable for both military and civilian applications. The engine has a thrust output of approximately 5,000 pounds, which allows for decent performance in medium-sized aircraft. This engine powered several notable aircraft, including the Antonov An-12 and the Tupolev Tu-95. Its design features a single-spool configuration and a centrifugal compressor, contributing to its robust performance. The AI-20 played a significant role in the development of aviation technology during its time.