By the way, the russian abbreviation PAK FA mean something like "Advanced Tactical Aviation Aircraft Complex", or more precisely "Perspective Aircraft Complex of Frontline Aviation" (рус. Перспективный авиационный комплекс фронтовой авиации
. But there is problem in 100% correct translation, because some specifics of russian military-technical language.
AND as bonus : )
Im translated for you russian video from post #19. Here english text (its about engine - not plane).
(TV dictor)
- Our correspondent was able to visit the first tests of unique fifth generation engine . There is full-scale works on Russia's largest warfactory "Salut".
(Correspondent)
- Slight hissing, clicking, and a cluster with titanium plates, jet engine moves to the left. Another click - right, and then to the bottom and on a circle. Movement is managed by the computer. He also controls such simple, just at first view, turning mechanism. To make it work on real engines, nearly 10 years all the major aviation companies hard worked worldwide.
This is a test room. It is tightly closed. Next to him will be using cameras and computers. The air flow rate in the chamber - 120-150 kilometers per hour.
Run. Power grows. Thrust 3 tons, 5, 10.5. Now the most difficult. Reactive jet starts go to side. The temperature at the outlet of above 1000 degrees. The throw to the right, mimicking the sharp anti-missile maneuver of aircraft in combat. Now to left. Leaf yields of nozzle pressure, but the computer finds the correct balance.
(One of constructors)
- The fifth-generation engine must have a high performance, but it should be simple, cheap and interchangeable with regard to existing aircraft for modernization. This is how we make it.
(Correspondent)
- In the halls of factory workers say about new engine: "our engine." Previously, similar tests were conducted in an atmosphere of secrecy, but now the regime is more open. And it has brought its results
(One of factory engineers)
- All employees are encouraged by success, they fell their significance. In our group a wonderful atmosphere. They are constantly, day and night working to improve the engine, make it even better.
(Correspondent)
- Prospects for the new engine are immense. It is important that the scheme is mainly use the serial hubs that have multi tests in time. Its reliability is very high.
Its use will enable revive the scheme of one-engine. Russia has about 600 such machines. Big interest has been from military of India, which has 700 fighter aircraft ready for this powerful update. This renew jets of 3 generation to 4+ generation. India provided the the factory test aircraft for these promising developments.
This engine is unique in the world. And after two years he will be serialized.