page_title: Tupolev TB-3
section_title: Variants
hierarchical_section_title: Tupolev TB-3 / Variants
caption_attribution_description: Русский: Высадка_парашютного_десанта_с_ТБ-3.Изображение представляет собой кадр из военной кинохроники .
context_page_description: The Tupolev TB-3 was a heavy bomber aircraft which was deployed by the Soviet Air Force in the 1930s and during World War II. It was the world's first cantilever wing four-engine heavy bomber. Despite obsolescence and being officially withdrawn from service in 1939, the TB-3 performed bomber and transport duties throughout much of World War II. The TB-3 also saw combat as a Zveno project fighter mothership and as a light tank transport.
context_section_description: Source: Shavrov
  TB-3 4M-17F
  The first production version, comprised about half of all TB-3s built.
  TB-3 4M-34
  Mikulin AM-34 engines with revised radiators, added oil coolers, several dozen built.
  TB-3 4M-34R
  Mikulin AM-34R engines with reduction gearboxes providing significantly improved performance, additional turret aft of the tail fin, tail wheels with hydraulic brakes, aerodynamic refinements of the wing-fuselage join and radiators, retractable wind generators.
  TB-3 4AM-34RD
  A series of long-range demonstration aircraft with streamlined fuselages and wheel brakes. Some aircraft had single main gear wheels 2 metres (6.6 ft) in diameter and three-blade metal propellers. Used for flights to Warsaw, Paris, and Rome in 1933–1934.
  TB-3 4AM-34RN
  High-altitude version with AM-34RN engines, four-blade propellers on inboard engines and two-blade on outboard, 2 metres (6.6 ft) single main wheels, turrets upgraded to ShKAS machine guns, top speed 288 kilometres per hour (156 kn; 179 mph) at 4,200 metres (13,800 ft), service ceiling 7,740 metres (25,390 ft). Tested in August–October 1935 but did not enter production as the basic TB-3 design was becoming obsolete.
  TB-3 4AM-34FRN/FRNV
  AM-34FRN/FRNV engines with increased power output and four-blade propellers, aerodynamic refinements including streamlined turrets, 2 metres (6.6 ft) main wheels with brakes, top speed over 300 kilometres per hour (160 kn; 190 mph).
  TB-3D
  Proposed variant with Charomsky AN-1 diesel engines of 750 PS (740 hp) and projected range of 4,280 km (2,310 nm, 2,660 mi), did not enter production as other performance characteristics were inferior to TB-3 4AM-34RN.
  G-2
  Retired TB-3s with M-17 and M-34 engines converted for freight duties with Aeroflot
  ANT-6-4M-34R "Aviaarktika"
  TB-3 modified for the 1937 expedition to the North Pole with enclosed cockpit, single 2 metres (6.6 ft) main wheels, three-blade metal propellers.
caption: Paratroopers jumping from Tupolev TB-3
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