
57mm rockets fired by an Azerbaijani Air Force Hip gunship.
The Azerbaijani Air Force is believed to operate a fleet of 35-40 Mil Mi-17 utility helicopters.
The Hip choppers can also operate in the gunship role carrying 57mm rocket launchers: the photo in this post shows a Mi-17 firing S5 rockets from medium altitude during a live firing exercise.
Image credit: Azerbaijan Air Force
On the picture S-8 – 80 mm
It seems that the helicopter does not belong to Azerbaijan, this photo from tests carried out in Russia.