Su-39, Attack Aircraft

The Su-39 anti-tank aircraft is a profoundly modernized Su-25, intended specially for countering small-size well-protected targets (including new generation NATO tanks) by day and night in any weather.
The Su-39 is equipped with the SUV-25T Voskhod weapons control system, which is designed to identify and automatically track small-size mobile targets (tanks, automobiles, boats, etc.), as well as to ensure target designation and automatic missile guidance, and rocket and gun firing. The Shkval-M optical-television sighting system searches and identifies targets in the scanning mode. Navigation and fire control are computer-assisted. A set time span is strictly maintained by aircraft, which allows a well coordinated group attack from different directions. The aircraft automatically gets into the target area. The pre-directed television system is switched on at a distance of 10-12 km from it. Then the pilot monitors the target selection and automatic lock-on, after which the system turns to an automatic tracking mode. After the first run-up the attack aircraft can automatically accomplish another run-up or return to base if ordered so by the pilot (manual handling can be turned on right before landing).
Another new element in the aircraft's avionics is the Kopyo-25 radar.
The navigation system is supplemented with the A-737 satellite navigation unit. The target is automatically acquired with accuracy of up to 15 m independently of the flight range.
The upgraded EW system of the Su-39 comprises both built-in and externally mounted containerised equipment.

Basic Characteristics