Tupolev I-4

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Tupolev I-4
Tupolev ANT-5.jpg
Role Fighter
National origin Soviet Union
Manufacturer Tupolev
Designer Pavel Sukhoi
First flight 1927
Retired 1933
Primary user Soviet Air Force
Number built 369

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 Tupolev, the first Soviet all-metal fighter.

Design and development[edit]

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[edit]

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]


  • 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.


 Soviet Union

Specifications (I-4)[edit]

General characteristics

  • Crew: one, pilot
  • Length: 7.27 m (23 ft 10 in)
  • Wingspan: 11.42 m (37 ft 5 in)
  • Height: 2.82 m (9 ft 2 in)
  • Wing area: 23.8 m² (256 ft²)
  • Empty weight: 978 kg (2,156 lb)
  • Loaded weight: 1,430 kg (3,153 lb)
  • Powerplant: 1 × M-22 (Bristol Jupiter) piston radial, 343 kW (460 hp)



See also[edit]

Related lists


  1. ^ "AKL-201611 AviaKollektsia 11 2016: Tupolev I-4 Soviet Fighter of the 1920s". modelgrad.com. Retrieved 2017-10-20.

External links[edit]

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