F-117 Shot down in 1999, page 4
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reply posted on 6-12-2005 @ 02:21 PM by intelgurl
Originally posted by grunt2
neither ram, neither geometrics works good below 9ghz, again that is basic physics, about the expansive propieties of the em wave and the material ticknesss for a better probability of absorbsion due the wave length, so isnt so easy


The basic physics you refer to must not take into account over a decade of development in chiral polymers and frequency selective surfacing. You can talk all about thickness, absorption and wavelengths, but chiral composites are not old school RAM.
A couple of good reads on the subject are:
"Radar Cross Section Reduction using Chiral Composites"; Jose, Varadan & Varadan
"Polymer Based Electromagnetic Wave Absorbers"; Tellakula, Penn State Univ.


Originally posted by grunt2

The SA-3 is mostly obsolete now due to its short range and easily jammed radar but despite this (and in many senses, because of this) an SA-3 system managed to shoot down an F-117 Nighthawk "Stealth Fighter" on March 27 1999 during the Kosovo War ....

P-15 "Flat Face" or P-15M(2) "Squat Eye" 380 kW C-band target acquisition radar (also used by the SA-6 and SA-8, range 250km/155 miles)
"Low Blow" 250 kW I/D-band tracking, fire control and guidance radar (range 40km/25 miles)
PRV-11 "Side Net" E-band height finder (also used by SA-2, SA-4 and SA-5, range 28 km/17 miles, max height 32 km/105,000 ft)


I am also fairly confident that the SA-3 system that brought down the F-117 was an S-125 with the P-18 radar, not the P-15. (not that it matters).


reply posted on 6-12-2005 @ 04:04 PM by iskander
intelgurl

As long as we are on the same page, considering the proposed shift from asymmetrical warfare toward horizontal integration, this will still be on the topic

Naturally the only positive prevention method is to prevent deployment, but our flawed nature (short sided policies) brought us to the brink time and time again.

Considering severe limitations of Space systems in collecting signal intelligence/imagery (L. Thompson), in case of deployment mm is still the only viable interception method. em has obvious theoretical limits, and ee is a whole other can of worms. If we go there we’ll have to deal with submass, dot mass, flux density, etc. and risk of imminent outside intervention.

Thus my interest in "soft" hypersonic warheads. After all the years of "retention”, remnants of shady ghosts like sunflake, widewater and longthrow (etc) unfortunately seem to be creeping back up. The UAV “environment prepping” is concerning to say the least.

As per Sun Tzu;
“Fighting one hundred battles and winning a hundred battles in not the best. The best of the best is to subdue the enemy’s army with out fighting against it.”

True, just depends on whom are we preparing to fight.



”Non-U.S. radars that claim to have an effective capability against LO air targets are making claims based upon assumptions. The simple fact is that non-U.S. radar systems do not have a representative target in which to test their CLO capability. You cannot defeat stealth if you do not have a true stealth target to validate your system's performance.”

Nonsense, all possible theoretical/practical limits/aspects have been calculated and tested long time ago. Application is the main factor.


reply posted on 6-12-2005 @ 05:00 PM by iskander
“yes they have lower resolution, but that is solved by better software -by interference energy momentum searching- or active homming (that use HF in missiles but in ranges in which cant be countered), but anyway its resolution enough for a operative defence”



I already said the same here before.

I’ll put in my one last say in this whole “stealth” debate.

Matter is always in motion and is subjected to aetheric and zpr interactions. Changes in orientation of mass or its velocity = dielectric flux, electromagnetic displacement etc.

These concepts are old news from late 19th century.

Dig in:

bourabai.narod.ru...

I hope from here people can put 2 and 2 together, starting from using low frequency EM wave as a carrier for example.

So unless it’s a “Bird of Prey”, it is tracked plain and simple, what to do about it and how, that’s the question. This whole “stealth” business was a forced half-step measure implemented to reduce the unquestionable effectiveness of Soviet equipment, and make a killing for the Defense industry.

MiG-25 btw, with its “old” 50s technologies, scored a low altitude kill on F-18 by a missile designed to track bombers, all while the Hornet was beaming, dumping chaff and jamming with modern ECM.
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