The AL-31F series 3 engines were developed and produced specially for Su-33 aircraft, the UEC said.

"In order to meet the requirements of the state customer, the UEC has resumed the production of AL-31F series 3 turbofan engines for deck-based Su-33 fighters. A batch of the engines has already been produced by UMPO [part of the UEC] and supplied to the customer," the press office said.

ST. PETERSBURG, June 28. /TASS/. Russia has launched the production of upgraded engines for deck-based Sukhoi Su-33 fighter jets, the press office of the United Engine Corporation (UEC) said on Wednesday.

"Considering the evolutionary development that the family of AL-31F engines has undergone after the last series 3 units were produced, the new engines for seaborne heavy fighters are made with the introduction of modifications that have already been applied to the engines of the AL-31F family," the corporation’s press office said.

Engines for the naval aviation’s Su-33 aircraft arrive after passing all the test stages. The UEC is also carrying out work for providing technical support for operational seaborne AL-31F engines.

The AL-31F turbofan engine with an afterburner and a variable thrust nozzle is mounted on the aircraft of the Su-27 family. It is used in a wide range of altitudes and flight speeds and provides for the aircraft’s unique maneuverable characteristics.

The AL-31F has been used as the basis for developing the AL-31FP variant with thrust vector control and the AL-31FN variant with the lower arrangement of the box of aircraft accessory for mounting on single-engine fighter jets.

As its specific feature, the Al-31F series 3 offers a possibility for introducing an additional special mode for the aircraft’s takeoff from the deck with the full combat load or for an emergency go-around maneuver.