Russian developers have completed a third phase of flight-testing with the engine designed to power the Ilyushin Il-114-300 turboprop.

The tests – comprising nine flights and 14 ground runs – were intended to check the operation of the AV112 propeller and control system software, as well as a number of other components.

Testing has been conducted with the Klimov TV7-117ST engine fitted to an Ilyushin Il-76 laboratory aircraft.

This powerplant will also be used on the Il-112V military transport.

State technology firm Rostec says the automatic control system will handle both the operation of the engine and the propeller – controlling the entire powerplant.

“Such joint control allows the fullest use of the potential of the engine and propeller to increase efficiency,” it adds.

The engine will deliver 3,100hp at take-off with a capability of increasing to 3,600hp if necessary.

Flight tests have already been carried out with the TV7-117ST engine fitted to the Il-112V, which performed its maiden flight in March