ANT-22 (MK-1)
Role	Reconnaissance flying boat Type of aircraft
Manufacturer	Tupolev
First flight	8 August 1934
Number built	1

The Tupolev ANT-22 (also known as the MK-1) was a large flying boat built in the Soviet Union in 1934. A huge aircraft consisting of two hulls and powered by six engines in three nacelles in a push-pull configuration, it was based on the ANT-11, which was never built.^[1] Its enormous weight severely crippled its performance, and it never proceeded beyond the experimental stage.

Operators

 Soviet Union

• Soviet Naval Aviation

Specifications (ANT-22)

Data from The Osprey Encyclopedia of Russian Aircraft 1875–1995 ^[2]

General characteristics

• Crew: eight
• Length: 24.1 m (79 ft 0.75 in)
• Wingspan: 51.0 m (167 ft 3.88 in)
• Height: 8.96 m (29 ft 4.67 in) ^[3]
• Wing area: 304.5 m² (3,278 sq ft)
• Empty weight: 21,663 kg (47,758 lb)
• Gross weight: 33,560 kg (73,986 lb)
• Powerplant: 6 × Mikulin M-34R , 612 kW (820 hp) each

Performance

• Maximum speed: 233 km/h (145 mph, 126 kn)
• Cruise speed: 180 km/h (112 mph, 97 kn)
• Range: 1,350 km (840 mi, 730 nmi)
• Endurance: 7 hours
• Service ceiling: 3,500 m (11,500 ft)
• Rate of climb: 1.6 m/s (318 ft/min) ^[4]

Armament

• 2 × 20 mm Oerlikon cannon (one in left dorsal turret and one in right nose turret)
• 2 × 7.62×54mmR ShKAS machine gun (one in right dorsal turret and one in left nose turret)
• 2 × 7.62×54mmR DA machine guns (one in each tail turret)
• 6,000 kg (13,200 lb) bombs under wing centre section