The Tupolev ANT-29 (military designation DIP – Dvukhmotorny istrebitel pushechny, "twin-engined cannon fighter") was a 1930s twin-engined, cannon-armed fighter designed by Alexander Arkhangelsky and built by Tupolev.

Design work started in 1932 on a twin-engined aircraft capable of carrying two APK-100 cannon.^[1] The resulting design was the ANT-29 and it first flew in February 1935.^[1]It was a monoplane with a tall and narrow fuselage, powered by two Hispano-Suiza 12Ybrs engines.^[1] The cannon were mounted at the bottom of the fuselage, and unusually they were accessible to the crew in flight for loading and maintenance.^[1] During tests the machine had reasonable performance but was longitudinally unstable. The aircraft did not enter production.^[1]

Specifications

Data from ^[1]

General characteristics

• Crew: three
• Length: 13.2 m (43 ft 4 in)
• Wingspan: 19.19 m (62 ft 11 in)
• Wing area: 55.1 m² (593 sq ft)
• Empty weight: 3,900 kg (8,598 lb)
• Gross weight: 5,300 kg (11,684 lb)
• Powerplant: 2 × Hispano-Suiza 12Ybrs , 760 kW (1,019 hp) each

Performance

• Maximum speed: 352 km/h (219 mph, 190 kn)

Armament

• One moveable machine gun
• Two recoilless cannon