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The Tupolev I-4 was a Soviet sesquiplane single-seat fighter. It was conceived in 1927 by Pavel Sukhoi as his first aircraft design for the Tupolev design bureau, and was the first Soviet all-metal fighter.

Tupolev I-4
Role	Fighter Type of aircraft
National origin	Soviet Union
Manufacturer	Tupolev
Designer	Pavel Sukhoi
First flight	1927
Retired	1933
Primary user	Soviet Air Force
Number built	369

Design and development

After the first prototype (under the development name Andrei Nikolayevich Tupolev fighter 5 | ANT-5), the I-4 was redesigned with a new engine cowling to decrease drag, with added rocket launchers on the upper wing and a larger tailfin. The lower wing was predominantly an attachment for the wing struts; it was almost removed in the second series, the I-4Z (where the lower wings were greatly shortened), and totally removed from the I-4bis, thus transforming the aircraft from a sesquiplane into a parasol-wing monoplane.

Operational history

The I-4 was used as a parasite fighter in experiments with the Tupolev TB-1 bomber. The aircraft was in Soviet service from 1928–1933. A total of 369 were built.[1]

Variants

• ANT-5 : Prototype.
• I-4 : Single-seat fighter aircraft.
• I-4Z : Single-seat fighter with span of lower wings greatly reduced.
• I-4bis : Monoplane version (lower wings totally removed).
• I-4P : Floatplane version.

Operators

 Soviet Union

• Soviet Air Force

Specifications (I-4)

Data from ^{[citation needed]}

General characteristics

• Crew: 1
• Length: 7.27 m (23 ft 10 in)
• Wingspan: 11.42 m (37 ft 6 in)
• Height: 2.82 m (9 ft 3 in)
• Wing area: 23.8 m² (256 sq ft)
• Empty weight: 978 kg (2,156 lb)
• Gross weight: 1,430 kg (3,153 lb)
• Powerplant: 1 × Shvetsov M-22 9-cylinder air-cooled radial piston engine, 343 kW (460 hp) (Bristol Jupiter)
• Propellers: 2-bladed fixed-pitch propeller

Performance

• Maximum speed: 257 km/h (160 mph, 139 kn)
• Range: 524 km (326 mi, 283 nmi)
• Service ceiling: 7,655 m (25,115 ft)
• Wing loading: 60 kg/m² (12 lb/sq ft)
• Power/mass: 0.25 kW/kg (0.15 hp/lb)

Armament

• Guns: 2 × 7.62 mm machine guns

See also

Related lists

• List of interwar military aircraft

References

Bibliography

• Lesnitchenko, Vladimir (November–December 1999). "Combat Composites: Soviet Use of 'Mother-ships' to Carry Fighters, 1939–1941". Air Enthusiast (84): 4–21. ISSN 0143-5450.

External links

The initial version of this article was based on material from aviation.ru. It has been released under the GFDL by the copyright holder.

На других языках

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[de] Tupolew I-4

Die Tupolew I-4 (russisch Туполев И-4), auch als ANT-5 (АНТ-5) bezeichnet, war ein einmotoriger, einsitziger Anderthalbdecker. Sie wurde in der zweiten Hälfte der 1920er Jahre entwickelt und stand als Jagdflugzeug bis 1938 bei den sowjetischen Luftstreitkräften im Einsatz.

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- [en] Tupolev I-4

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[fr] Tupolev ANT-5

Le Tupolev ANT-5 ou Tupolev I-4 est un avion de chasse monomoteur biplan. À partir de 1934 il servit d'avion-école.

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[it] Tupolev ANT-5

Il Tupolev ANT-5 (in cirillico Туполев АНТ-5) era un biplano monomotore progettato dallo TsAGI, all'epoca diretto da Andrej Nikolaevič Tupolev, e sviluppato in Unione Sovietica nella seconda metà degli anni venti.

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[ru] И-4

И-4 (АНТ-5) «истребитель четвёртый» (Андрей Николаевич Туполев пятый). Первый советский цельнометаллический истребитель, построенный из кольчугалюминия. Одноместный подкосный полутораплан. Самолеты строили серийно на заводе № 22 в Филях с середины 1929 года. Состояли на вооружении до 1935 года, и ещё год — в авиашколах.

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