Swept - wing prototype with Mikulin AM - 9B reheated turbojet , armed with three NR - 30 cannon .
Swept - wing could carry one UB - 16 - 57 rocket pod .
Swept - wing prototype with Mikulin AM - 9B reheated turbojet , armed with three NR - 30 cannon , and could carry one UB - 16 - 57 rocket pod .