Polikarpov's design signature during the mid and late 1930s was a stubby, barrel-shaped fighter. The primary machine during that era was the I-15 biplane. Like their barrel-shaped brothers on the other side of the world, the Grumman F3Fs, the I-15 was going to be transformed almost directly into a monoplane fighter, the I-16. In the transformation, the I-15's upper wing was deleted and the lower wing strengthened to carry the full load. With a wingspan one meter shorter than the I-15, the early I-16 was powered by the same 700hp M-25 radial engine as the late-model I-15. The I-16 also incorporated retractable landing gear. Armament for the early I-16 was a pair of 7.62mm machine guns.

I-16 Type 18; Type 10 with Shvetsov M-62 engine producing 620 kW (830 hp), with a two-speed supercharger and a variable-pitch propeller. Capable of carrying two 100 l (26 US gal) underwing fuel tanks.

Twee uitvoeringen mogelijk;