Tags: Aircraft.
The Grigorovich IP-1 (for Истребитель Пушечный – Cannon fighter) was a fighter aircraft produced in the Soviet Union in the 1930s. When the performance of both the Grigorovich I-Z and its single-shot Kurchevski DRP cannon armament proved disappointing the development of that particular system did not halt development of the basic underlying concept of a cannon-armed bomber destroyer.