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Klimov TV2-117
Isotov TV2-117


Klimov TV2-117


The Klimov TV2-117 (initially Isotov TV2-117) is a Soviet gas-turbine turboshaft engine intended for helicopter use. Developed in the early 1960s from the Klimov TV3-117 by the Isotov Design Bureau the engine became the first purpose built gas turbine engine for helicopter use by the Soviet Union with previous helicopter turbines being adapted aeroplane powerplants. First run in 1962, it was later produced by Klimov, production ending in 1997.

The TV2-117 is claimed to be the most popular helicopter powerplant worldwide with 23,000 built and has accumulated over 100 million hours in service.


Base variant.

Improved engine with more durable compressor stator blades.

Carbon sealed shaft bearings

Limited production of engine certified to FAA airworthiness standards for Japan.

Multi-fuel variant, adapted to run on liquid petroleum gas and other fuels, such as gasoline and diesel fuel, and for use in cold climates.


Antonov An-24 (intended coupled turboprop application)
Mil Mi-8
Mil Mi-14



TV-2 117
Type: Turboshaft
Length: 2,835 mm (9.301 ft)
Dry weight: 330 kg (728 lb) (minus accessories)
Compressor: Ten-stage axial flow
Combustors: Eight-chamber cannular
Turbine: Two-stage compressor turbine, two-stage power turbine
Maximum power output: 1,700 hp (1,268 kW)
Overall pressure ratio: 6.6:1 at 21,200 rpm
Specific fuel consumption: 0.606 lb/hr/shp



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