9K52 Luna-M
The 9K52 Luna-M (Russian: Луна; English: moon, NATO reporting name FROG-7) is a Soviet short-range artillery rocket system which fires unguided and spin-stabilized 9M21 rockets. It was originally developed in the 1960s to provide divisional artillery support using tactical nuclear weapons but gradually modified for conventional use. The 9K52 was eventually succeeded by the OTR-21 Tochka.
Originally called the 3R-11 and 9R11, the 9M21 is a solid fuel rocket with four off-angle vernier chambers immediately behind the warhead section. When the main engine section ignites, the verniers activate to start spinning the rocket to improve stability and accuracy. At range, the 9M21 has a nominal CEP (circular error probable) of 400 meters.
Development bureau: Московский институт теплотехники (Moscow, USSR)
Designer: N. P. Mazurov
Year: 1964
Crew: 5
Fire range: 70 km
Weight: 16400 kg
Weight of the rocket: 2500 kg
