The AA-2a ATOLL (R-3S)  is a short range, air-to-air, uncooled infrared homing missile.  It is a solid fuel rocket. The original R-3 and R-3S are direct copies of the AIM-9B Sidewinder and many parts are interchangeable with the AIM-9B.

Source: http://weaponsystems.net/weapon.php?weapon=HH07+-+AA-2+Atoll; http://en.wikipedia.org/wiki/K-13_(missile)


