39A0

The designation 39A0 is associated with a specific type of missile, often identified as the Soviet R-13 (NATO reporting name: AA-5 'Ash'). This air-to-air missile was developed in the Soviet Union during the 1960s. It was designed for use by fighter aircraft, primarily the Sukhoi Su-9 and Su-11.

The R-13 missile featured a semi-active radar homing guidance system, allowing it to track targets illuminated by the launching aircraft's radar. It was a relatively large missile for its era, with a length of approximately 3.6 meters and a diameter of around 0.3 meters. Its weight was approximately 250 kilograms, and it carried a high-explosive warhead. The missile's range varied depending on the specific variant and operational conditions but was generally in the tens of kilometers.

The R-13 was intended to engage bomber aircraft and other strategic targets. It was deployed by the Soviet Air Force and was also exported to some allied nations. While it saw operational service, its effectiveness and widespread combat use are not as well-documented as some other Soviet missile systems. The designation 39A0 might refer to a specific internal Soviet index or a variant of the R-13 missile. Information regarding its exact production numbers or detailed operational history can be challenging to ascertain due to the classified nature of Soviet military programs during that period.