you are a yankee , nobady can convince you that PAK FA will be better than F-35 and will equal -F-22A . How can you say say that F-35 is more stealthy than PAK FA,you do not know the RCS of the PAK FA, the payload,the supercruise , the extreme agility , the weapons , the thrust to weight ratio are all in the favour of PAK FA
plus if you think that DrKopp has no insight of PAK FA program then can you refute what he says about PAK FA. i think not . Russia were the pioneers ,they were the ones who detected the plasma stealth applications when they launched. Tell me one thing how can F-35 be more agile than PAK FA when PAK FA has 3-D TVC. ( sometime you have to accpet when the facts are right on your face).Not to mention many soviet scietist defected to USA and aided the stealth program for USA. I think you maybe the only person who think that russian are stupid enough to develop5th gen aircraft which will be inferior to F-35,F-22 , nowhere i mean in other forum people have said that PAK FA inferior to F-22 let alone F-35.
About Russian Stealth Program , do notice the years mentioned in the article you will know when stealth program was started
First developed by the Russians, plasma stealth technology is also known as "Active Stealth Technology". Plasma stealth is a proposed process that uses ionized gas (plasma) to reduce the radar cross section (RCS) of an aircraft. A plasma stream is injected in front of the aircraft covering the entire body of the aircraft and absorbing most of the electromagnetic energy of the radar waves, thus making the aircraft difficult to detect. There are few experimental studies of plasma's effect on RCS. One of the most interesting articles was published by the Institute of Electrical and Electronics Engineers (IEEE) in 1963 and described the effect of plasma on the RCS of aircraft. The article entitled "Radar cross sections of dielectric or plasma coated conducting spheres and circular cylinders" was based on the data offered by Sputnik, the first artificial satellite launched by the Soviet Union on October 4, 1957.
While trying to track Sputnik it was noticed that its electromagnetic scattering properties were different from what was expected for a conductive sphere. This was due to the satellite traveling inside of a plasma shell.While Sputnik was flying at high velocity through the ionosphere it was surrounded by a naturally-occuring plasma shell and because of it there were two separate radar reflections: the first from the surface of the satellite itself and the second from the plasma shell. If one of the reflections is greater the other one will not contribute much to the overall effect. When the two reflections have the same order of magnitude and are out of phase relative to each other cancellation occurs and the RCS becomes null. The aircraft becomes invisible to radar.
In January 1999, the Russian news agency ITAR-TASS published an interview with Doctor Anatoliy Koroteyev who talked about the plasma stealth device developed by his organization. Doctor Koroteyev was the director of the Keldysh Research Center. There have also been claims that in 2002 the Russians tested a plasma stealth device on board a Su-27 and RCS was reduced by a factor of 100.
The Keldysh Research Center has created a plasma generator that weights no more than 100 kilos, thus making it possible to be fitted on board most tactical aircraft. Current stealth technology uses radar absorbent materials (RAM) and angled surfaces that don't reflect radar waves back. This constitutes as a main drawback, since an alteration of the airframe has negative effects on the flight characteristics of these aircraft. The third generation stealth technology F-22 Raptor seems however to be an exception since it is both a fast aicraft and very maneuverable.
By using a plasma generator the aerodynamic characteristics of the aircraft do not suffer which in term means that the payload is increased making it more effective. The use of this technology offers the benefit of not having to carry the payload internally to be able to fool enemy radar. The Sukhoi Su-35 and the MiG-35 (both upgrades of Su-27 and MiG-29) are the first to benefit from this technology.
One of the most interesting russian fighters to benefit from the plasma stealth technology is the MiG 1.42/1.44 also known as the MFI (Mnogofunktsionalny Frontovoi Istrebitel - Multifunctional Frontline Fighter). This new aircraft is a fifth generation air-superiority fighter, a rival for the american F-22 Raptor. Both aircraft have the same supercruise capability as well as thrust vectoring for supermaneuverability (a capability to fly at supercritical angles of attack, at increased level of sustained and
available g-loads and high turn-angle rate, which require a greater thrust-to-weight ratio and improved wing aerodynamic efficiency). This aircraft may prove to be a milestone in aviation, as so many russian aircraft were before.
About ASEA radar
On the prospective fighters, says Yuri Belyy (NIIP), it will no longer be just radar, but the integrated radio-electronic system, which includes radars in several wave bands, an identification system, electronic warfare (EW) and electronic intelligence (ELINT). According to him all this is connected into the united ideology, the united concept, and will give the "synergetic combat effect".
NIIP's AESA emitting modules (MMICS) are made on basis of proved serial technology, being manufacturing on the automated producing lines. For this purpose the state ensured colossal technological rearmament of one of the Moscow enterprises - "Istok inc." (Fryazevo, Moscow district). Two product lines are under building: the line, where chips themselves are done and an assembly-line, where these chips are assembled into the microcircuits, and then they are integrated into the elements of antenna. These are the specialized micro-chip of superhigh frequencies (SHF), the monolithic integrated circuits of SHF band (MMICs). The more numerous such elements, the more powerful the radar. The quantity of modules in the antenna can reach several thousand.
The PAK-FA will have two X-Band AESA radars located on the front and back of the aircraft. These will be accompanied by L-Band radars which are thought to be located on the wing LERX sides. L-Band radars are proven to have increased effectiveness against VLO targets which are optimized only against X-Band frequencies, despite being less accurate.
Unlike the F-22 the PAK-FA will feature an IRST optical/IR search and tracking system. The IRST promises to be the best way to target stealth aircraft since regardless of the IR stealth claims made of the F-22, jet engines are fundamentally not conducive to IR invisibility. The trail of hot air behind the F-22 is likely the first thing the PAK-FA may see, perhaps as far as 25km.
Avionics
The combat avionics of the T-50 has been under development for some time, and some elements will almost certainly be installed in the Su-35 interim fighter. The main sensor will be a Tikhomorov NIIP X-band radar with active AESA antenna, which was unveiled at the latest MAKS Air Show in August 2009. The 1m-dia. antenna contains some 1,500 solid stat transmit/receive modules by NPP Pulsar, which places it in the same class as the F-22's APG-77. Tikhomorov claims an exceptional range of ~400km against a 1m² equivalent radar surface target. The radar entered bench testing in November 2008, and a flyable operational prototype will be completed by mid-2010.
In a very innovative development, the main X-band antenna will be supplemented by auxiliary L-band antennas installed in the wing inboard leading edges. In addition to the obvious IFF/SSR functions, this arrangement (which is also being offered for retrofit on the Su-27/-30 family as well as the Su-35), has a very clear anti-stealth search function. Most current stealth or semi-stealth designs - and most particularly the F-35 JSF, although not the F-22 - are optimised to reduce radar signature against X-band fire control radars as the main threat, and their low-observability features and shapings do not work as well against L-band radars. Of course, the lower the frequency the higher the wavelength the poorer the accuracy of distance and angular measurements, and thus even apart from excessive volume, weight, power and cooling requirements a fighter aircraft could not possibly rely on a main L-band system alone. However, the presence of the additional L-band antennas will provide an important early warning function against at least some low-observable targets, and it may also enable a "mini-AWACS" role. It is additionally conceivable that these antennas could also be used for the detection and disruption of sensors and digital communications systems operating in L-band, including e.g. the all-important JTIDS/MIDS/Link-16.
While the PAK FA has no functioning radar yet, it already sports the protruding head of an electro-optic IRST system in front and to the right of the cockpit's windscreen. This will maintain the excellent mixed solution (radar/IRST) used in all modern Russian fighters, event tough the IRST seeker's "ball" is at odds with the search for a reduced radar signature in the front emisphere. The decision to add the L-band antennas while maintaining the IRST reinforces the perception of the T-50 being mainly intended for air defence roles against intruding low-observable strike aircraft.
http://www.defpro.com/daily/details/506/