Good post MSphere.

S-duct, radar blocker etc. are different ways to minimize radar reflection coming from compressor face. None of them is a perfect solution. They are all compromises.

To those who are in love and admiration for “Serpentine Ducts” (S-ducts), be aware that this is not a recent invention in the aviation world. It has several drawbacks. One of them is that they take a lot of space (meaning less space for fuel, internal weapons etc.). This problem becomes more acute when you have to install large engines like on the PAK-FA or F-22. The engineers of the F-22 opted for the S-duct fully knowing the compromises.

For the PAK FA: The Sukhoi engineers are well aware of all the above engine shielding methods and the compromises involved. Again, whatever method (or combination of methods) they have used has been decided upon while fully being aware of the compromises involved.

Whether you are a Russian engineer, American engineer or E.T. himself…the laws of physics don’t change.

Edit: Eagerly waiting for more T-50 photos, give me the real ones please. No fake or photoshopped lies.

MAI Taking Part in Creation of Fifth Generation PAK FA

In addition to telling the reader the Moscow Aviation Institute – also called the State Engineering University – is taking part in T-50 development, it notes that the aircraft’s takeoff weight is greater than 30 tonnes, it was designed with stealth in mind, has a cockpit that reduces the pilot’s workload, can take off and land on runways 300 to 400 meters long. Flight range is 5,500 kilometers and speed is up to 2,100 kilometers per hour. It can be refueled in the air. Its large internal weapons bay can carry R-77 missiles or two huge guided bombs weighing up to 1,500 kilograms each. Externally it can carry two ultra long range missiles developed by the Novator bureau which are capable of destroying an AWACS aircraft at a range up to 400 kilometers away.

Source: 17.03.10, RIA-Novosti

/ / /

Yep. He definitly has a burst blood vessel. :D:D

You’re saying it’s wrong but where is the evidence to support it based on the quote? The fact that the pilot is specifically talking about supercruise and then goes right into the Mach 1.9 statement is the reason people assume he’s still talking about supercruise. What is leading you to believe that he isn’t?
“And then there is the Raptor’s super cruise capability that lets it fly at supersonic speed without using fuel-guzzling afterburners as required by other fighters. “That saves us a lot of gas and opens up a whole host of things when you start talking about dropping bombs,” Krumm said.

“You can imagine if you are 60,000 feet doing mach 1.9 (about 1,400 mph) and these bombs are flying out of your airplane,. . .”

Where in that is the “whoa, we’re not taking about supercruise anymore”? He goes from talking about dropping bombs at supersonic speed to. . .dropping bombs at supersonic speed.

The fact that he is saying it in a F-ing new paragraph.

But you are free to believe in whatever you want. :rolleyes:

There is something else in there that has not been picked up on…

The F-22s supercruise speed. 😉

Tbh, I didn’t know it was that close to Mach 2.

Let me be the one nitpicking here.
The sentence below does not mention that the Raptor is supercruising at Mach 1.9. It merely states that it can drop bombs while flying at that speed.

“You can imagine if you are 60,000 feet doing mach 1.9 (about 1,400 mph) and these bombs are flying out of your airplane, the swath of hell you can produce going through a country saying ‘I’ll take that target, and that target’.”

That fact that the paragraph above it talks about supercruising ability leads the human brain towards the wrong conclusions.

Russia developing new generation destroyer.

http://www.militarynews.ru/EMAIN.ASP

Fifth Equivalence

The premier has made the PAK FA program an example for the whole industry

The fifth generation fighter complies with all military concepts about the first stage of this airplane’s life. The T-50 test program is still proceeding rather successfully. In the first three flights it was able to attain an angle of attack greater than 25 degrees. During the creation of the Su-27, the same result was achieved after more than half a year of tests.

Actually, the PAK FA today is the most technologically advanced product of Russian aircraft building. While some elements of its design remain transitional, subject to subsequent replacement with more improved examples. Primarily, this relates to the engine. The PAK FA was lifted into the air and will reach the inventory with the so-called first stage engine, the more improved second stage motor will not appear soon. As the Sukhoy Aviation Holding Company general director, Mikhail Pogosyan, said, the cycle for creation of a new aircraft engine is 10 – 12 years, and inasmuch as the process of the second stage engine’s development is now at the stage of defining the contours and principles for forming its operation, it will not appear earlier than 2020 – 2022. It will occur if the winner of the competition declared by the defense ministry finally is determined and real work on the creation of this motor, supported by corresponding financing, begins as early as 2010, 2011 at the latest.

However, it is not worth making unfavorable conclusions from this, inasmuch as the motor the PAK FA now has, based on the AL-31F, provides all the customers requirements, among which is supersonic cruise flight. Owing to the usage of a digital automate control system, the weight of the power plant has been lowered by 150 kilograms. According to the Sukhoy company manager, the engine’s thrust has been increased by 2.5 tonnes.

The PAK FA test program is continuing at the present time: two airplanes are undergoing static tests. One – flight tests. This T-50 will be relocated to the Gromov Flight Test Institute in the coming months in the Moscow suburb of Zhukovskiy. In the second half of 2010 – start of 2011, three more airplanes will be added to the tests.

Some details of the PAK FA design also have been obtained from sources at the Sukhoy OKB. In particular, the share of composites by weight (from the weight of an empty airplane) is nearly 25 percent, and on the surface, as the military industrial complex conjectured, is 70. The use of huge composite panels has allowed lowering the quantity of parts appreciably – in comparison with the Su-27, there are a quarter of the airframe parts on the Su-27. Such a decrease will lead to a decrease of the series production workload and a decrease of efforts for its preparation.

As regards the PAK FA radar cross section ((EHFFEKTIVNAYA PLOSHCHAD’ RASSEYANIYA)) which is of interest to all observers, it corresponds to the figure declared for its chief competitor – the F-22. And the American airplane, as is known, has an RCS of 0.3 – 0.4 square meters in compliance with the performance specification. One still cannot expect a frameless canopy on the PAK FA – the appropriate technology has not been mastered in Russia.

Source: 09.03.10, Voenno-Promyshlennyy Kur’er, Correspondent: Il’ya Kedrov