When many Australian Airforce officials (what would they know) and an Australian MP (name escapes me, but worked for Australian Defence Research) knock the F 35 , I think maybe, just maybe as in the case of the MP who leaked that Rand report which did have classified data that perhaps Dr Kopp etc may be on to something. I also point out that you don’t need classified information to arrive at every conclusion, its not always accurate anyway (Osama intelligence, India, Pakistani nuclear monitoring). Physics don’t lie. Hence Raleigh scattering. VHF detects stealth. Even the U.S casually mentioned it (cant be bothered quoting where) but it was dismissed by them because of poor angular resolution until recently.
Finally look at U.S R&D. Next Gen bomber, X 47B all have wideband stealth in their requirements. Is that for nothing? We forget the F 35 was conceived 11 years ago when no one though phased array VHF was possible. Now it is. The U.S are developing new jamming assets (they canned that project last year… to save money). I think that says it all.
Of course I could be wrong but piecing together U.S dept quotes over time can yield alot of information which when pieced together with acquisitions can confirm a great deal of scuttlebut.
If you’re referring to the RAND(F-35 clubbed like a baby seal) report, that has been debunked. It’s hard to do good analysis if you don’t have access to the classified materials, because your margins for error are huge. If you’re trying to counter something, you’re going to need to know pretty specific info, or you may be very disappointed in the real world performance.
Ok F 35 was developed to defeat X band frequencies (fighter radars, short range battlefield sams that by their very nature (low cost, small size) have X band radars like fighters. The F 22 was conceived like the B 2 to operate over the entire Soviet Sam Umbrella (primarily S 300, Sa 11 for B2, S300V for F22) and so needed to defeat X band (engagement radars of said sams) L band and S band (surveillance radars) and to some extent VHF band (EW radars). One can with some confidence extrapolate all this from the threats both aircraft were intended to face and the attendant operating frequencies of those platforms. JSF was designed for battlefield interdiction and looking at its shaping its obvious Raleigh scattering occurs. If we look at F117 which faced similar threats, we know its was near immune to X band owing to its faceting in the size of this wavelength or greater but was detected by Iraqi IADS (hence the tomahawk strikes). Even an old type 1001 radar on a Sheffield class detected (but could not track) it. Now this ray path method of rcs prediction is only half the picture in that some radar waves flow over the airframe until they find a gap and reflect back (called crreping wave). The B2 and F117 used generous amounts of Ram to soak this up. In the longer bands both facets and indeed Ram thicknesses go up to control creeping wave. You notice this around the perimeter chines on stealth
aircraft.As regards Russian abilities to develop stealth? Well the developed pulse doppler, lerx, wing blending and high bypass turbofans the last time the U>s reset the technology base (F 14 etc). we forget Russia has seen F117, YF 22, Yf 23, Tacit Blue, Have Blue, X 45, X 46, X 47, Yf 35, Yf 32, F 35 planforms so a great deal of work has already been done for them (shaping).
Computationally, the Soviets invented the algorithym to predict RCS, they didn’t wrote a program (Echo 1) to exploit it. Computersc are now freely available..That F117 crash in 1999 prob
The F-35 will go against S-300/400s too- there aren’t enough F-22s to be the sole SEAD/DEAD aircraft, as well as the air supremacy fighter. If only the F-22 were going to be used in this role, the F-35 could’ve just been a conventional airframe, and saved a lot of money, and concentrated solely on aerodynamic performance. The main differences are a higher RCS(.001m^2 vs. .0001m^2)/less IR suppression, less peak raw performance, no thrust vectoring, no ALR-94(of course the F-22 doesn’t have DAS, or the JHMCS).
The technology isnt totally obsolete, just one form of its application. X band only stealth is largely obsolete (e.g JSF). Wideband stealth is not (Next Gen Bomber, X 47B and of course Pakfa one suspects).
Just out of curiosity how do you know what bands that the F-35 and F-22 are designed to be stealthy to? It’s obvious that X is one of them, but are you certain that’s the extent of it? The Russians have yet to field even one VLO aircraft, and their first one is supposed to be stealthier across a wide range of freqs? Perhaps, but I’ll believe that when I see it.
I think the weeklystandart website is not a reliable source.Im already the first time saw this website.The sources are Russian or anti Russian I couldn’t understand.Look at this words!
A representative from one of the PAK-FA’s major partners told THE WEEKLY STANDARD that “the situation is very simple. Right now the only real fifth-generation fighter airplane in service in the world is the F-22A. This state of affairs is not likely to change anytime soon.”
The Weekly Standard is a reputable source, though I’m not sure it’d be my first choice for aviation news. I’m not sure what’s inaccurate about this statement that you quoted though. The PAK FA isn’t gonna reach IOC anytime in the near future, though it may have its first flight.
I think you will find Carlo Kopp addresses those operational regimes quite comprehensively by stating, (a), that S 400 class systems may employ anti access strategies to a Wedgetail by threatening it if its within 400kms of an S 400, (B) pointing out that such standoff weapons that the JSF may emply will be engaged by point blank optimised missiles (the new hittiles the S400 deploys) and finally that the RCS of said JSF carrying said stand off weapons would completely negate its alleged stealth.
It all comes down to our appreciation of the enemy. Are they stupid because they are not like us necessarily, or has Russia and China in particular gone to great lengths to develop counter-stealth and anti-access capabilities to JSF, ISR assets that Canberra in particular would like to pretend do not exist. The IDF made a similar mistake underestimating CW guidance in the Sa 6 Gainful in Yom Kippur for instance…
Why are the Russians building the PAK FA, if this technology is already obsolete?
That’s just not correct, F-35 was optimized to evade radars at higher frequencies, that means a reasonably powerful 4th gen adversary will be well aware of F-35’s presence and position, he will only experience trouble when trying to track and get a lock and that is where IRST might get very useful.
It was meant to evade A2A radars, and SAM radars. There are ground based search radars that may use frequencies that work better at seeing a VLO target, but they can’t track or guide weapons. More importantly, if they’re emitting, the VLO aircraft with sophisticated ESM systems will see them first, and bypass them. A defender might get lucky, if he started emitting when the VLO target was already within detection range, and unable to bypass their site.
That’s exactly what he said. Here the quote. Contains no word about fully loaded. The last sentence was highlighted on purpose.
In terms of aerodynamic performance, the F-35 is an excellent machine, Beesley said. Having previously been only the second man ever to have flown the F-22 Raptor, Beesley became the first pilot ever to fly the F-35 in late 2006. As such, Beesley is intimately familiar with both programs. According to Beesley, the four current test pilots for F-35 have been most impressed by the aircraft’s thrust and acceleration. In the subsonic flight regime, the F-35 very nearly matches the performance of its’ larger, more powerful cousin, the F-22 Raptor, Beesley explained. The “subsonic acceleration is about as good as a clean Block 50 F-16 or a Raptor- which is about as good as you can get.” Beesley said.
The aircraft flies in “large measure like the F-22, but it’s smaller, and stiffer” than the Raptor however, Beesley explained, adding that the aircraft handles superbly. The reason for the similar flight characteristics, explained the test pilot, is because the man who designed the flight control laws for the Raptor, is also the same man who is responsible for the flight control software for the F-35. As Beesley explains, the flight control laws of modern fighters determine to large extent the flight characteristics of a given aircraft. Beesley said that the aircraft is so stable and so comfortable that the test pilots find themselves inadvertently drifting too close to their wingmen in formation.
What Beesley expects will surprise future F-35 pilots is the jets’ superb low speed handling characteristics and post-stall manoeuvrability. While the F-22 with its thrust vectored controls performs better at the slow speeds and high angle of attack (AOA) flight regime, the F-35 will be able match most of the same high AOA manoeuvres as the Raptor, although it will not be able to do so as quickly as the more powerful jet in some cases. Turning at the higher Gs and higher speed portions of the flight envelope, the F-35 will “almost exactly match a clean Block 50 F-16 and comes very close to the Raptor”, Beesley said.
Why didn’t he say empty F-35, and Raptor then for the comparison?
I would be more worried about JSFs poor VHF stealth and the fact that such radars can detect an F117 at roughly 40NM in jamming environments and 190NM without jamming that today may simply be ineffective due to the inherent limitations of jamming active phased array radars and the fact none may be survivable (home on jam shots from S 300/ S 400). There’s a reason the U.S is quietly resurrecting the B 52 jammer (curiously now limited specifically to longer frequencies like VHF…), insisting on better stealth for the next gen bomber ( Isn’t the B 2 good enough?) and has brought the UCAV-N out from the cold for further testing (it has a very impressive diamond configuration embedded in a near all wing design to dramatically reduce signatures).
Surely the F 35 dropping bombs the S 400, Tor, Pantir which are all designed to engage PGMS at point blank ranges makes the concept of F 22 / F 35s dropping jdams on emitters a little naive?
What’s the Pk against PGMs?
At what range do you think the ESM system on the F-35 can detect search radars?
From SUBSONIC speed weither the others can count of a 0.4 Mach advantage from stock even with 1 X 1.250 l external tank and do the exact SAME thing.
Not even the F-22 can supercruise the entire time. The EF/Rafale will be travelling the same speed as the F-35 the majority of the time, and the F-35 can accelerate very fast too.
Not necessarly even less with lower Operational ceilings in the balance…
The F-35’s optimal altitude for cruise efficiency is lower than it might climb to, to launch for maximum range. Unless the EF/Rafale can climb to 70,000 feet, they’re not going to always have a height advantage.
NOT detection, INTERCEPT.
The word DETECTION is not in the phrase LPI.
Happy vs. Glad
The terms detect/intercept are interchangable in the context of ESM/RWR realizing that a radar is in operation vs. background EM noise.
On its won F-35 canot do passive, since its AAMs are internals it have to lock BEFORE launch and posses NO IR BVR capabilties.
The other aircraft would be feeding the missile the datalinked info.
That’s the theory and applie much more in the case of F-22 because it is realy stealth; NOT F-35.
The F-35 is stealthier than the F-117, and in the same range as the B-2.
What’s the SIZE and temperature of its exhaust plume?
What’s the kinetic energy of a subsonic aircraft flying at 10.000 ft lower and 0.4 M slower?
-the Rafale and Typhoon aren’t gonna be travelling at M2 with a full load of AAMs, and since we’re discussing IR signatures, they’d have to use A/B to hit their dash speeds in any event.
What does window of detection means?
It means all things being equal, the plane with the lowest RCS gets spotted last.
What’s the added range of equivalent AAMs launched 10.000 ft higher and 0.4 Mach faster?
Don’t confuse optimum cruise profile, with optimum missile launch profile. The F-35 can climb/accelerate if it needs additional kinetic energy. Of course since it can get closer to its target without being seen, that offsets the kinetic advantages/necessity.
Detection range for OSF is about 130 km and SPECTRA is proven to detect LPI radars (NATO MACE-X Exercise), it’s not even a match it’s laughable, limited EM L.O doesn’t compensate for this…
LPI doesnt mean UNDETECTABLE BTW…
You’re right, it’s not undetectable. It’s just low probability of detection.
Use your APG-81 and you will be detected just as well if not earlier than by a Pirate or OSF, what is going to be more difficult it to get a lock on you but this is where IRST, Remote (networking) targeting, BVR IR AAM and sensor fusion are useful.
We shall see. Of course if the EF/Rafale emits, they’re definitely gonna be detected, as they’re not currently LPI, so it comes down to whether they can spot the F-35 with their IRST, before the F-35 spots them.
You visibly didn’t study the subject in any form nor detail; there are more than one way to detect L.O in particular trans-horizon radars complements AWACS quiet well in the role, we know, we got them at home.
And there are tactics that take these things into account. What about a passive shot from the F-35, where the datalink updates are coming from other aircraft(i.e. AWACS, F-22s, other F-35s, etc..), and then the launch aircraft changes heading away from the target?
OSF search patern is the SAME as the radar and its search angle as well…
What’s the search rate though, and field of view?
50 G is the upper limit within the NEZ and in any case flown and fired slower and lower they still wont make the difference.
The AIM-120D/D+ have very large NEZs
Everybody knows that AAMs fired faster at a higher altitude flies with more energy (Larger NEZ), further and FASTER as well, PLUS, we got Meteor this side of the pound, mate so F-22 advantages still apply for the faster, more maneuvrable and higher flying aircraft…
I’m not sure why you are using the example of a Rafale/EF engaging an F-35, but…the with the VLO of the F-35, but it’d be a waste to use a Meteor against it, as you’ll be in or just outside of ASRAAM range before you could get a radar lock. That’s why all this talk about altitude/speed/kinetic energy/etc…. is great when talking about >1m^2 targets. It becomes much less relevant if you can shoot at your foe, and they don’t know you’re there.
That’s a HELL of an assumption considering its IR signature is superior to some of the supposely non-L.O and that it doesn’t supercruise, BOTH of which are part of the USAF stealth conceipt for F-22.
You have little idea what L.O conceipt realy means in USAF terms do you?
-What’s the frontal IR signature of an F-35 that’s not using A/B?
-What’s the search volume/detection range of an IRST vs. the APG-81
If the adversary doesn’t know where to look with his IRST, he’s gonna be looking around for a while, without any guarantee of success.
When the F-35 enters service, it won’t be AIM-120C5s that it’s carrying. It’ll be D/D+s. In any event, they’re a 50g+ missile, not 30g.
Say WHO?
Care to provide some charts showing the detection/tracking ranges of targets in the RCS range that is commonly accepted for the F-35(i.e. ~.001m^2). It’s gonna be shorter than the range the DAS/EOTS provides, not to mention the APG-81/ESM(if target is emitting).
Agreed and there is NOTHING new in this point, it also goes BOTH way and is a valid for other aircrafts too, as you mentioned; which altitude was the couple aircraft/emgine optimised…
And in the case of F-35 it is obvious that it is at a much lower ceiling than the European aircrafts…
Supporting flight is onr thing, being effiscient in A2A when your kinetic energy is already lower than your adversaries is something else.
If your adversary isn’t flying a VLO aircraft, it won’t matter in BVR whether it has a kinematic advantage, because it won’t be able to engage the F-35 any earlier than it can detect it. The F-35 will always see the non VLO adversary first, and have the first shot/first kill advantage.
The so called “Irbis-type AESA radar” is not even planned to be fit in PAK-FA 🙂 . An official statement from many months ago is that the AESA radar for PAK-FA is almost ready, and it will not be inferior to APG-77 , but even somewhat superior 🙂 . In another statement (an interview) the director of NIIP (the developer) said that three types of radar will be fit in PAK-FA – mm, cm, decimetric .
Without knowing what the capabilities of the APG-77 are, you simply can’t say unequivocally that X radar WILL be superior.
In the case of WHICH aircraft would low drag AAMs and pylons cause it not to reach DASH speed?
It IS also a DASH speed never being mentioned ANYWHERE as SUSTAINED, BTW just because you seems not to know, it was a F-35 design requierement from day one: “Supersonic DASH Speed”.
In this topic, “operational configuration” doesn’t mean anything, all of these aircraft can fly at DASH speed in A2A configuration, this mean without tanks for the Europeans but they CAN jettison their tanks, F-35 stays with its extra internal volume and structural weight.
To reach these respective DASH speed thet all have to use AB which means the european aircraft retains their speed advantages in all aspects and A2A configuration.
Optimum is the ceiling at which the combination aircraft configuration/engine performances/mission’s tactical aspects is at its highest.
This generaly is close or literaly the same as Operational ceiling.
Don’t confuse minimum requirements with maximum capabilies though. The full flight performance envelope has not yet been disclosed in terms of altitude or speed. With regards to dash speeds- the F-35 will be able to reach its dash speed with a combat load- the EF/Rafale/Su-XX, cannot, much like the F-15C dash speed is M 2.5+, but with AAMs, it’d be lucky to break M 2.