Why certainly, JJ: conventional radar operating frequencies are in the range of 10GHz, so a wavelength is in the order of 3cm, meaning that just about any surface on the aircraft represents many, many wavelengths, and so there is no resonance and the absorptive properties of the material come into play.

Low frequency radars operate in the vicinity of say, 150MHz, so a wavelength is around 2 metres- roughly the diameter of the fuselage of a typical aircraft, and so even though the aircraft uses non-metallic materials on the surface, there are probably internal structural pieces that represent multiples of a half-wavelength, and so there’ll be an enhanced return.

The LF radars themselves may not be able to identify the target but they can provide valuable data on detection/location, where other techniques such as Passive Coherent Location (PLC) can be employed.

Boeing has played up such deficiencies in the F-22/35, for it’s 6th Gen fighter bid, claiming tentative solutions, but if the Czechs can come up with an anti-stealth radar, you can bet the Russians & Chinese will be leagues ahead.

Sorry to rain on your chest thumping party, but both Lockheed and Northrop had working computer simulations to predict RCS in 1974 and 1975 respectively. The output of those RCS models resulted in the Have Blue and Tacit Blue demonstrators that flew in 1977 and 1982 respectively. This was years before Dassault developed its RCS models in the 1980s.

Oh, I’m sorry, the official French Government remonstrations must have been baseless- ’cause you said so. Not to mention no country has the right to develop stealth tech. (or superior software modelling techniques) unless allowed by the US.

Cute, but not that interesting. Even an F-22 would most likely be shot down if it unwittingly flew directly over a SAM site. Only a great fool would believe that anything is invincible, and it would be equally foolish to believe that VLO-level stealth is useless just because it is not invincible. On the contrary, it has proven to be significantly more effective than expected.

How dare you call sferrin “a great fool”!!! shame on you!!……and stop arguing with yourself, makes you look stupid.

UB or not UB?
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http://www.missiles.ru/foto_aviasvit-2006.htm

Product 611 (Izdeliye 611) Ex R-30, made in Ukraina (Russia creates own missiles: KM-D “Małoj Dalnosti” Product 300)

Apologies, Kusch is right KM-D will succeed R-73/M, my mistake.

Any word on the ramjet R-77(PD), apparently Russia’s AGAT have been helping the Chinese develop theirs, according to Jane’s.

The PAK-FA is not expected to be cheap, the RuAF may end up buying some Su-35s in order to make up numbers for less critical missions.

Your probably right, I’m sure RuAF Su-35s will have AESAs (retro-fitted to Irbis) & similar weapons suite to the PAK-FA- especially if they’re produced almost concurrently (which seems quite bizzare in itself).

I just don’t sense the same priority the RuAF seem to be giving the Su-34 & MiG-31BM or even ‘Skat’, afterall the Su-35 has been around for 15 years now albeit in various guises.

The new rumors on russian forums include the “new”, most probable appearance of PAK-FA. The picture considered is well known. Some state that the inlets must be Raptor-like (me too). To me the wing scheme seems to be trustworthy, but i find the nozzles and especially armament to be untrustworthy.

I think the ‘sanitised’ artist’s impression released by NPO Saturn last March is the most likely resemblance to the real thing. It would explain why it was so hurriedly removed & replaced by one of those crap J.Gatztiel impressions with red-faced denials, truely a comedy of errors.

With regard to latest speculation of delta/ diamond wing planform- I suppose it’s shape is pretty delta- more inclined than F-22s, and I believe imho, that the intakes will be YF-23 style (also in-line with recent spec. that it has more in common with the YF-23 than Raptor).

I’m pretty certain there’ll be an official roll-out with loads of Medvedev/Putin fanfare- they love it.

Wonder if the ‘Blacjacks’ deploying to the Bay of Biscay will have treated intakes…
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