|National origin||Soviet Union|
|First flight||3 July 1933|
|Primary user||Soviet Union|
|Developed from||Tupolev TB-3|
The Tupolev ANT-16 (also known as the TB-4; Russian: Тяжелый Бомбардировщик – Heavy Bomber) was an experimental heavy bomber aircraft designed and tested in the Soviet Union in the early 1930s. Conceptually representing evolution of the TB-3 bomber, the ANT-16 was designed under the doctrine that size and payload were more important for a bomber than speed because it would be able to protect itself with defensive armament. The twin 5 by 1.8 by 1.8 metres (16.4 ft × 5.9 ft × 5.9 ft) × 16.5 by 5.11 by 5.11 feet (5.03 m × 1.56 m × 1.56 m) bomb bays were the largest in the world at that time and presented many design challenges in order to preserve structural rigidity of the airframe.
The sole prototype first flew on 3 July 1933 with M. M. Gromov at the controls. The test flight program was completed by 29 September 1933 with disappointing results. The two top-mounted engines performed poorly and a significant portion of thrust generated by the wing-mounted engines was absorbed by the two meter-thick (6 ft 7 in) wing. A proposal to re-equip the aircraft with Mikulin AM-35 engines of 933 kW (1,250 hp) was not implemented.
- Crew: twelve
- Length: 32 m (104 ft 12 in)
- Wingspan: 54 m (177 ft 2 in)
- Height: 17.3 m (56 ft 9.10 in)
- Wing area: 422 m² (4,542.4 ft²)
- Empty weight: 21,400 kg (47,179 lb)
- Loaded weight: 33,280 kg (73,370 lb)
- Powerplant: 6 × Mikulin AM-34 V-12 piston engine, 560 kW (750 hp) each
- Maximum speed: 200 km/h (108 kn, 124 mph)
- Range: 1,000 km (540 nmi, 621 mi)
- Service ceiling: 2,750 m (9,022 ft)
- Wing loading: 79 kg/m² (16 lb/ft²)
- Power/mass: 101 W/kg (0.06 hp/lb)
- Time to altitude: 34 s to 2,000 m (6,560 ft)
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- Related development
- Shavrov V.B. (1985). Istoriia konstruktskii samoletov v SSSR do 1938 g. (3 izd.) (in Russian). Mashinostroenie. ISBN 5-217-03112-3.