he Five Year Plane for experimental aircraft design (starting
1928) contained, among others, an assignment for
A.N.Tupolev to develop the I-5, single-seat mixed construction fighter powered by
either the Bristol Jupiter VII engine or the experimental
M-36 power plant. The aircraft supposed to be delivered in
September 1929.
But A.N.Tupolev was busy with development of the all-metal bomber, and the
ANT-12 project (bureau designation for the I-5) moved very slowly...
