Combat aviation of the USSR: trainer aircraft PO-2. Developed in 1928. Double biplane of mixed design with open cockpit and non-retractable chassis. During WW II the model was used as a night light bomber. A crew – 2 persons. Armament: a machine gun (7.62 mm ShKAS). The speed is 152 km / h. The practical ceiling is 3000 m. The flight range is 400 km. Power – 115 hp. Museum of the Great Patriotic War, Moscow.