The United Engine Corporation (UEC), part of Rostec state holding company, successfully conducted the first ground-based ignition of the second stage of the engine for the Prospective Airborne Complex of Frontline Aviation (PAK FA T-50 aircraft).
In order to carry out the testing, gas generators had to be prepared for it, in addition to the demonstrator engine.
Currently, the PAK FA is using a first stage engine, a modernized Al-41.
According to Pavel Bulat, avionics specialist and head of the Kupol Group of Companies, the AI-41 is an updated version of engines used for the Su-27, Su-30 and other models in that series.
“The engine for the T-50 was significantly upgraded from the original models, incorporating the latest control system, compressors, etc. Nevertheless, it still falls short of the 5th generation model, and is very noticeable on radar screens,” said the expert.
The new second-stage engine is one of the most advanced in the world, said Bulat. It enables the T-50 to accelerate to supersonic speed, and maintain that velocity throughout the flight, without using afterburners.
“The speed will be as much as Mach 1.6 (about 1,200 mph), depending on the terrain over which the flight is taking place. The engine will also significantly improve the stealth properties of the PAK FA, thanks to the use of new composite materials,” said Bulat.
The designers expect to start testing the new engine on fighter jets in 2018, and for the motor to be fully integrated in 2020.
“In addition to the engine, a radar station also needs to be modified, and engineers need to remove the last deficiencies in the airframe concept, which, among all the aircraft flying today, is the most modern in the world,” said the analyst.
New fighter’s weapons
The firing unit consists of one of the lightest cannon in its class, the 9-A1-4071K, which is designed to destroy armored vehicles or armored enemy targets. During one flight, the pilot can shoot 150 rounds from the 30-mm cannon.
The future T-50 5th generation fighter will also carry high-explosive and volume-detonating bombs, Sergey Rusakov, General Director of the Techmash Group, announced on September 22.
Rusakov said they are now considering high-explosive incendiary OFZAB-500 aviation bombs for the PAK FA, and volume-detonating ODAB-500PMV, which are currently being used in Russian operations in Syria. Engineers have already produced a set of warheads for future tests.
According to the rearmament program, Russian Armed Forces will receive a batch of 12 T-50 fighters before the end of this year. A new contract for the supply of 5 th generation aircraft will be discussed with the Ministry of Defense at the end of 2016, after which the War Department will decide how many new aircraft are needed.
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