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The Grigorovich TB-5 (Russian: Григорович ТБ-5) was an experimental heavy bomber designed and tested in the Soviet Union in the early 1930s. Designed as a competitor for the Tupolev TB-3, the TB-5 was intended to be powered by two FED 24-cylinder X engines of 746 kW (1,000 hp) each. When these were canceled, the underwing pods were revised to each house a pair of Bristol Jupiter engines in a push-pull configuration. Despite projected performance inferior to TB-3, it was hoped that TB-5 would gain an advantage by using less metal (in short supply at the time) thanks to its mixed construction of fabric-covered metal frame.[1]
| TB-5 | |
|---|---|
 | |
| Role | Heavy bomber |
| National origin | Soviet Union |
| Designer | Grigorovich |
| First flight | 1 May 1931 |
| Status | Retired |
| Primary user | Soviet Union |
| Number built | One |
Test flights began on 1 May 1931 with disappointing results, in part due to poor thrust of the rear-facing engines.[1] The prototype TB-5 was wrecked in a crash landing following the in-flight detachment of an engine in the spring of 1932,[2] and with the entry into service of the superior TB-3 that year, the TB-5 project was abandoned.[1]
Specifications (TB-5)
Data from Shavrov 1985[1]
General characteristics
- Crew: Six[3]
- Length: 22.1 m (72 ft 6 in)
- Wingspan: 31 m (101 ft 8 in)
- Wing area: 150 m2 (1,600 sq ft)
- Airfoil: root: TsAGI R-II (18%); tip: TsAGI R-II (12%)[4]
- Empty weight: 7,483 kg (16,497 lb)
- Gross weight: 12,535 kg (27,635 lb)
- Powerplant: 4 × Bristol Jupiter V 9-cylinder air-cooled radial piston engines, 336 kW (451 hp) each in tandem nacelles
- Propellers: 2-bladed variable-pitch propellers
Performance
- Maximum speed: 180 km/h (110 mph, 97 kn)
- Range: 2,600 km (1,600 mi, 1,400 nmi)
- Wing loading: 84 kg/m2 (17 lb/sq ft)
- Power/mass: 0.107 kW/kg (0.065 hp/lb)
Armament
- Guns: Two turrets, each with 2× 7.62 mm (0.3 in) PV-1 machine guns
- Bombs: Up to 2,500 kg (5,512 lb) of bombs
See also
Aircraft of comparable role, configuration, and era
References
- Shavrov V.B. (1985). Istoriia konstruktskii samoletov v SSSR do 1938 g. (3 izd.) (in Russian). Mashinostroenie. ISBN 5-217-03112-3.
- Gunston 1995, p. 91.
- Gunston 1995, p. 90.
- Lednicer, David. "The Incomplete Guide to Airfoil Usage". m-selig.ae.illinois.edu. Retrieved 16 April 2019.
- Gunston, Bill (1995). The Osprey Encyclopedia of Russian Aircraft 1875–1995. London: Osprey. ISBN 1-85532-405-9.
На других языках
[de] Grigorowitsch TB-5
Grigorowitsch TB-5 (russisch Григорович ТБ-5) ist die Bezeichnung eines sowjetischen viermotorigen Bombenflugzeuges aus dem Jahre 1931. Zugunsten der wesentlich moderneren TB-3 wurde sie nicht in die Serienfertigung überführt. Es existierte nur ein Prototyp. Das Kürzel „TB“ steht für Tjaschjoly Bombardirowschtschik (Тяжёлый бомбардировщик), schweres Bombenflugzeug.- [en] Grigorovich TB-5
[ru] ТБ-5
ТБ-5 — тяжёлый бомбардировщик, созданный в тюремном КБ-«шарашке» ОГПУ (ЦКБ-39) по инициативе Н. Е. Пауфлера — сотрудника ОГПУ, директора авиазавода им. Менжинского на Ходынке, где размещалось КБ со множеством знаменитых советских авиаконструкторов, осуждённых без суда, а лишь на заседании коллегии ОГПУ, на значительные сроки заключений или даже на казнь.Другой контент может иметь иную лицензию. Перед использованием материалов сайта WikiSort.org внимательно изучите правила лицензирования конкретных элементов наполнения сайта.
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