MI 171 Helicopters Gas Turbine Aero Engine (TB3-117VM)

The TV3-117 is a Russian gas turbine aero engine. It is used in most medium lift, utility, and attack helicopters designed by the Mil and Klimov Design Bureaus. The TV3-117 turbo shaft engine was developed in 1974. Later the Klimov TV3-117 was installed on 95% of all helicopters designed by Mil and Kamov Engineering Center. The engine has been produced in many variants.