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ARA662

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  • in reply to: IRBIS and the detection of low RCS targets #2511450
    ARA662
    Participant

    great read Zare 🙂
    so we can conclude that it isn’t advisable for craptor to tackle Su-35BM with 120-C7

    in reply to: the PAK-FA saga, continued2…… #2511717
    ARA662
    Participant

    Can you please get us a big PAK-FA……

    There:
    http://img91.imageshack.us/img91/8764/pakfa2xr1.jpg

    in reply to: More Russian porn – Putin rattles his assets again #2511928
    ARA662
    Participant

    http://uk.news.yahoo.com/rtrs/20080122/tpl-uk-russia-spain-flights-43a8d4f_4.html

    I wonder which particular oil magnate is funding the overtime for this one…

    http://tinyurl.com/2t6lxz

    in reply to: Top 5 fighters as of today. #2513907
    ARA662
    Participant

    And the new radar for the MiG-31M was Zaslon-M, that was not the upgrade.

    So something new is a downgrade??

    edit/ I see what u mean it’s an upgrade based on technology developed for Zaslon-M 😉

    in reply to: Top 5 fighters as of today. #2513954
    ARA662
    Participant

    The MiG-31M was an 80’s/90’s program to refine the MiG-31 with various airframe changes, new avionics, and the addition of six conformal stations for the new R-37 AAM. This is NOT the same aircraft as the current MiG-31BM upgrade. The MiG-31M was one of the post-Cold War programs that didn’t survive into the 21st Century. It never reached service, and only a handful of prototypes were built.

    Also, the MiG-31BM will have an upgraded Zaslon radar set, but it isn’t being replaced completely with the MiG-31M’s Zaslon-M set as far as I am aware.

    Zalson-M upgrade was necessary after Tolkachev leaked info.
    This upgrade was introduced in 1990.

    “A new version of the ‘Foxhound’ with upgraded avionics, the MiG-31B, was introduced in 1990 ts development was the result of the Soviet discovery that Phazotron radar division engineer Adolf Tolkachev had sold information on advanced radar to the West. Tolkachev was executed, and a new version of the compromised radar was hastily developed. Many earlier MiG-31s were upgraded to the new standard, designated MiG-31BS.”

    http://www.wikimirror.com/Mikoyan_MiG-31

    in reply to: IRBIS and the detection of low RCS targets #2514425
    ARA662
    Participant

    do you have any proof? Didn’t think so.

    If AESA equipped fighter had such good jamming capabilities then there wouldn’t be a need for aircraft like EA-18G.

    in reply to: Top 5 fighters as of today. #2514455
    ARA662
    Participant

    ^^ keep telling yourself that.

    1. MiG-31 (Zaslon-M)
    2. F-22A (turbo, laser)
    3. SU-27SM (AL-31FM1 engines)
    4. SU-30MKI
    5. Mig-29SMT (over typhoon any day)

    in reply to: Top 5 fighters as of today. #2514514
    ARA662
    Participant

    As of today it goes something like this:

    1. MiG-31M/BM
    2. F-22A
    3. SU-27SM (AL-31FM1 engines)
    4. SU-30MKI
    5. MiG-35

    in reply to: IRBIS and the detection of low RCS targets #2514534
    ARA662
    Participant

    well its obvious AESA’s have much better beam agility, but its not as if modern PESA’s are like 50 year old MSA’s in this area either. Clearly, the AESA will have a more diverse collection of LPI modes than any PESA, but a modern PESA should have a decent collection of LPI functions built into it, I dont pretend to have access to classified information or to even comprehend all the math involved (not my area of research at all), but a modern PESA should create some of the same problems an AESA creates for RWR developers. They certainly arent just dumb 20kw flashlights.

    Could not have said it better myself. 😀

    in reply to: IRBIS and the detection of low RCS targets #2515029
    ARA662
    Participant

    If it were true that no technology exists to absorb and redirect RF energy, there would be no such thing as an anechoic chamber. After all, wouldn’t the ultimate radar reflector be the inside of a steel warehouse? RF energy would bounce around forever inside one. Yet anechoic chambers exist and you can find pictures of them on the internet. Maybe they are fantasy too?

    RAM provides only limited attenuation and even shape cannot provide signal cancellation.

    in reply to: IRBIS and the detection of low RCS targets #2515069
    ARA662
    Participant

    I disagree here. I am not a bi fan of the plasma stealth claim. I am simply missing any useful scientific and/or logical background for this. How exactly should this plasma thing work?

    well soyuz basically summed it up, I’m sure djcross might know a thing or two, but I’m done mentioning it.

    in reply to: IRBIS and the detection of low RCS targets #2515073
    ARA662
    Participant

    Finally, my last comment for the night, but why would the 20kw peak power be visible to an RWR? The TWT’s power has to go through a waveguide to generate the seach beam. The only thing you see emitting from the radar is the search beam right? The waveguide in a PESA “eats up” 50-70% of the peak power.

    “AESA’s are much more efficient at generating a seach beam and are much less efficient at handling the return signal than PESA’s, but the search beam is still going to be of roughly the same power coming out of both and that’s the only signal leakage there is. The 20kw’s is not what makes the PESA less capable of LPI than an AESA as I understand it. PESA’s have LPI modes they just arent as diverse as AESA LPI modes, but that is because of processing power and beam timing issues. Am I wrong?

    AESA’s are not more immune to jamming today. It is a complete bald faced lie from Raytheon and Northrop when they claim otherwise. The lower amplitude emissions of each individual T/R module do not render the radars emissions any more difficult for a jammer or RWR to deal with. This is because for a radar to function all the emissions from ALL the emitting modules have to be in phase. If any of the emissions are out of phase a search beam is not created. What jammers work on is the search beam not the TWT of a PESA. So, talk of a TWT acting like a beacon or lighthouse for the enemy are nonsense. The TWT works behind the wave guide, that raw power is not visible if proper signal leakage prevention measures are taken.
    http://tinyurl.com/36mmwu

    in reply to: IRBIS and the detection of low RCS targets #2515512
    ARA662
    Participant

    Why should I be an expert on plasma stealth to not know that the Raptors RCS claim isn’t far fetched?

    and please since you know so much about plasma explain to us how it can’t have an RCS of 0.0002m2 for nine microseconds
    and how many megajolts does it require for your brain to work properly?

    in reply to: IRBIS and the detection of low RCS targets #2515584
    ARA662
    Participant

    :confused:

    Do you know what plasma is? 😮

    Do you know how many microseconds a plasma molecule will stay in an unstable state? 😮 😮

    How do you generate enough plasma to shroud 100% of an airplane flying at 400 KIAS? M 1.5? 😮 😮 😮

    Go do some research about plasma, then come back and tell us how it is better than a Klingon cloaking device :rolleyes:

    WTF r u talking about??
    How about you explain to us how Klingons got the Raptors RCS down to 0.0001m2?
    Then come back and lecture us on your Plasma Stealth.

    in reply to: IRBIS and the detection of low RCS targets #2515609
    ARA662
    Participant

    This value could be correct for a very specific angle, specific radar wavelength and specific factors of other parameters playing a role. Other than that, Raptor’s typical RCS values could be ca 10-50 times higher from frontal aspect and 100-5000 times higher for other angles, which is still a pretty impressive figure.

    Yeah, but that could be said about any jet then (specific angle, specific radar wavelength, etc..)
    I don’t care how much and what kind of RAM it’s using at 62 feet long, 17 feet height, and 44.5 feet wingspan It won’t look like a golf ball. LOL!
    Plasma stealth sounds more reasonable.

Viewing 15 posts - 1 through 15 (of 26 total)