The Junkers Jumo refers to a series of aircraft engines developed by the German company Junkers during the early to mid-20th century. These engines were primarily used in military aircraft during World War II, known for their reliability and performance. The most notable model, the Jumo 211, powered several aircraft, including the Heinkel He 111 and the Junkers Ju 88. The Jumo engines were liquid-cooled, V-12 designs that contributed significantly to the advancement of aviation technology. Their innovative engineering allowed for higher power outputs and improved efficiency, making them a key component in the success of various German aircraft during the war.