With its recoilless armament, the Soviet Union’s Grigorovich I-Zet was no ordinary fighter aircraft

A series production I-Zet, numbered ‘2 yellow’.

During the 1920s, the Red Army command displayed a keen interest in special recoilless artillery systems — the so-called Dinamo-Reaktivnaya Pushka (DRP), Russian for ‘dynamic reaction cannon’. This was brought about by the demand to increase considerably the firepower of fighter aircraft, whose ordinary rifle-calibre machine guns were losing their efficiency against heavy, all-metal bombers. Leonid Kurchevsky was reckoned among the most successful inventors of recoilless guns in the USSR. He suggested a gun which, to reduce recoil, had a special Laval nozzle in its rear section.

Become a Premium Member to Read More

This is a premium article and requires an active Key.Aero subscription to view. You can also access it if you’re subscribed to one of our Key Publishing magazines.

I’m an existing member, sign me in!

I don’t have a subscription…

Why not join our community of aviation enthusiasts? Pick one of our introductory offers and access a wealth of world-class aviation content.