Polikarpov TB-2

The Polikarpov TB-2 was a Soviet heavy bomber. It was built slightly later than the successful Tupolev TB-1 and should replace it. Ultimately, the TB-3, however, proved as efficient and as the TB-2 did not come beyond the prototype stage.

Development

The TB-2 was a biplane with a year-on upper wing extremely shorter lower wing, which also contributed to the two BMW VI engines under license M-17th It was made ​​of wood with a plywood planking. The structure was connected by very oblique stems from round steel. 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longer met by this time the usual standards, also the Anderthalbdecker interpretation in bomb aircraft of this size was outdated, so this type of aircraft did not go into production.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 engine s 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

5

Bomb load     800 kg

Military Aircraft

Twin engine aircraft

Aircraft project

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