Tupolev I-4
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 the Tupolev design bureau, and was the first Soviet all-metal fighter.

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]



 Soviet Union

Specifications (I-4)

Data from [citation needed]

General characteristics



See also

Related lists


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


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