Omnirole allright!

Do you have any paintball clusters in france? 🙂

That’s exactly the same thing. What some call “active cancelation” is just an improvment of the previous. It’s not something revolutionnary that appeared from nowhere suddenly.

If you take the mirror analogy, you must here have a “pre-reccorded” RF picture of the plane inside the “mirror”, which pre-reccorded image will interfere with the incoming signal to make a return signal supposed to cancel the real RF image. Thus: the DRFM….
… and a pre-reccorded image for each incoming angle…. There’s probably a complete RF map of the plane in the “active cancelation” system (for those who believe in this possibility of course…)

That’s why a Rafale spent one year in anechoidal chamber

and the 2000D before

Now the more the image is ‘regular’, ‘low’ and without ‘contrast’, the more the system works well. That’s why I’m personaly convinced that the ‘stealth’ shape of the F22 is only half of its stealth, the second half being active means.
Rafale has ‘only’ this second half.
Just my 2 cents.

(now waiting for the men in black knoking at the door… ;))

this is exactly what i was after! nice info c-seven!
But how do they cope a radars signaltags, and be able to predict the modes? And how well are these system works?

Sign, you are over-using terms like signal processing, signal data pattern, cryptical form, i can understand why you use these terms, everybody does..sound cool, but actually means nothing, i’m not criticizing you, is just that…everybody use these terms so lightly….

Aspis, ECM forcing fighters to merge are old news, very old, way older than stealth, way older than the 22/117/have blue, etc…., is why people like Riccioni hated the ATF concepts , and the relying on magical-lazy BVR fighting, garbage that was popular in the popular media in the 80’s-90’s and still now, is the real deal, is the real fighting, the dirty job, is not the “stealth counter”, not the magical tactic against the F22…again, the stealth hysteria is showing.

pfem, you are a kid, i won’t bother with your nationalist trash.

its not just cool….

signalprocessing= Radar electronics and software(SDU) that takes on the task of getting analog signals from a reseiver to digitaltarget on the screen..

cryptical form= use rand() funktion in excel and you know what i mean. probably not easy to predict for a ECM/stealth system

Datapattern= the order a radarmode repeat itself in order for someone to predict and repeat a destructive phase dispaced pi() deg from it.

considering cancellation, you don’t have to have “faster than light adaptation”

when a radar emits, its signal is detectable much further than the radar’s detecting range.

When the wave hits an object, in order to be detected by the radar, it has to travel all the way back… as there is never 100% reflection strength, that would mean that the signal is detectable by the plane in front of it to a distance superior to the twice of the range of the radar… that gives quite a lot of time to your ECM suite to send the cancellation wave back towards the emitter

The only way for your radar to have immediately an echo would be if you started operating it when you’re well whithin the range, but for that, you either have to be lucky or have another source to show you where the bandit is… again, that source may be jammed and you’re stuck back to the point one…

ok, i see your point. but phase timing(pico sec?, depending on frequency) is still difficult within there own radar array, so to time an incomning echo is not easy at all. The timing changes also, depending on the positions of transmission points(hopefully possible to predict) of the crafts and doppler on the speed difference.
But ofcourse maybe viable in the future.

What i earlier talked about, to see the radars “workingpatterns” is not easy at all, probably need a softwareblueprint for that..
example:
All signals are taged with a data pattern, so when a echo comes back the signalprocessing knows when the signal was sent. then the distance and bearing is known. this datapattern is extremely hard to replecate.. due to its cryptical form. For that you need the software, and not just dublicate the former signal.

Pretty well all 5th gen stealth Aircraft will soon be useless,
with there big weakpoint of noise being there downfall.

acoustic detectors are used today on the battle fields to detect sniper fire and other battle noise, the systems can detect a sniper fire round from a distance even tell you what type of weapon used.

locate the area it was fired from the noise and shockwave.

as current stealth are very loud they will be easy pickings when theses acoustic systems if not allready are perfected to counter Aircraft.
as each type as its own sound pattern picking up a F22 over a F16 will be easy.

Sonar noise sensor heads on weapons have been used for years, .
same will be made for Acoustic air to air or ground to air systems.

and will be hard to defeat once its locked onto the noise pattern.
chaff and flares will be useless.

this is really intresting..
Can you still here a faint sound as a missile when going supersonic? or hypersonic?
it should be kind of hard to read those small static pressurechanges in enviroment with relative high turbulence..

Or do you mean a extremely directed microfone on the ground points at the target with a marker or such?

still, 60% to “gain some know how” put against a license to produce a complete engine still doesn’t sound to be in brasil’s best interest

No, 60% isnt 100%, as a said. But its more than 0% and its not just the engine, its the hole package.
The cheap Cots idea of gripen with some development in the TOT, or the single sourced expensive rafale with no development in TOT…

its a brazilian desision and im happy with any of the outcome though its european. Add to that, Saab will still get to deliver some parts…

The question is ; what kind of valuable technology can really be transfered from the RM12 without the US approval.

60%? as mentioned above…is Volvo Aero intellectual property and could be transfered on by the behalf of Volvo Aero and the swedish goverment.