Drawing of the soviet ant-25 single-engine aircraft in the skyDrawing of the Soviet ANT-25 single-engine aircraft in the sky
Soviet single-engine fighter in the air with the enemySoviet single-engine fighter in the air with the enemy
Hand-drawn art of a twin-engine piston night fighter "filin" on the desktopHand-drawn art of a twin-engine piston night fighter "filin" on the desktop
Turbine engine of an airplane on a black backgroundTurbine engine of an airplane on a black background
Using a protractor by an engineer in the old schoolUsing a protractor by an engineer in the old school