The Polikarpov TB-2 was a Soviet heavy bomber. It was built slightly later than the successful Tupolev TB-1 and should be replaced it. Ultimately, the TB-3, however, proved efficient, and the TB-2 did not come beyond the prototype stage.
Development
The TB-2 was a biplane with a year-on upper wing and significantly shorter lower wing, which also contributed to the two BMW VI engines under license M-17th. It was made of wood with plywood planking. Very oblique stems from round steel connected the structure. The chassis was rigid and had a tail skid at the rear.
Development work began in 1927 under the name of L-2. In the fall of 1930, the aircraft began its flight test. Despite the aerodynamically clean design, the performance no longer met the usual standards; also, the Anderthalbdecker interpretation in bomb aircraft of this size was outdated, so this type of aircraft did not go into production.
TB is the type abbreviation for T jaschjoly B ombardirowschtschik (Тяжёлый бомбардировщик), the Russian name for heavy bomber.
Technical Specifications
- Polikarpov TB-2 (Поликарпов ТБ-2)
- Builder (s) Nikolai Polikarpov
- Year (s) 1930
- Length 17.6 m
- Wingspan 27.0 m
- Wing area 128.0 m²
- drives two liquid-cooled 12-cylinder in-line engines M-17
- Starting power 368 kW (500 hp)
- Maximum speed 200 km / h
- Service ceiling 6,800 m
- Reach 1180 km
- Off weight 6800 kg
- Bomb load 800 kg
- Military Aircraft
- Twin engine aircraft
- Aircraft project