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Erkokite

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Viewing 15 posts - 106 through 120 (of 507 total)
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  • in reply to: The PAK-FA Saga Episode XVI #2367666
    Erkokite
    Participant

    I like 51’s new paint job. Blue just looks kinda weird to me.

    in reply to: Air Action Over Libya (Merged) #2316263
    Erkokite
    Participant

    +1, completely agree. I find it ironic that the Arab ‘League’ requested military action by the West to protect innocent civilians against the hand of an evil dictator, yet failed to do the same for Iraq. And George W. Bush seems to have been partially vindicated by his assumption of popular uprisings in the Mid-East/Arab countries once Saddam was removed.

    Just exactly how long ago was Saddam Hussein removed?

    in reply to: Air Action Over Libya (Merged) #2318438
    Erkokite
    Participant

    http://www.reuters.com/article/2011/03/18/us-libya-idUSTRE7270JP20110318

    “Britain will deploy Tornadoes and Typhoons as well as air-to-air refuelling and surveillance aircraft,” Prime Minister David Cameron told parliament.

    in reply to: Air Action Over Libya (Merged) #2319275
    Erkokite
    Participant

    I don’t think so. It was not just a no fly zone- an immediate ceasefire will be enforced and any of Gaddafi’s forces that make hostile movements will be attacked. Benghazi, Adjibya, and part of Misrata are still controlled by the rebels. This will cement their foothold and prevent Gaddafi from dislodging them.

    in reply to: The Great ModMil Libya Thread (Merged) #2320329
    Erkokite
    Participant

    Either France or the UK would have no trouble and would likely make quick work of Libyan SAM’s and quicker work of the fighters. A couple of years ago France basically took control of the Ivory Coast in a day or so. However, France and the UK understand the concept of international law and diplomacy. In this case, IMHO, that’s a bad thing. Overall it’s probably good that they respect international law. There is no one law fits all though.

    in reply to: The PAK-FA Saga Episode XVI #2324002
    Erkokite
    Participant

    Ceramic Compressor blades?
    you mean carbon fiber composite fan blades for the LP section?

    No he probably means what he said. I don’t think conventional CFRP would work in a compressor (it does get quite hot). Ceramic Matrix Composites show a lot of promise in jet engines (though you usually hear about them more in the turbine section).

    in reply to: Rafale's RBE2 AESA pic and news! #2328660
    Erkokite
    Participant

    I have to say, for a small(er) company Selex has some really impressive achievements in AESA radars. They were already offering AESA technology for export in almost every airborne application(fighters, helicopters, MPAs and UAVs) years before the RBE2-AA became a reality. It’s a pity the Vixen doesn’t seem to have many takers outside of Sweden.

    US Customs has bought the Vixen 500E for use on its Cessna Citations. Granted a Citation isn’t exactly a fighter and they only ordered 3. I suppose this may change in the future though.

    in reply to: Rafale's RBE2 AESA pic and news! #2332391
    Erkokite
    Participant

    That’s what I was looking for. Thanks. 🙂

    Also, those radars are definitely the same.

    EDIT:

    That’s AMSAR. See here:
    http://www.scribd.com/doc/37432206/Phased-Arrays-and-Radars-Past-Present-and-Future
    Page 32, bottom.

    in reply to: Rafale's RBE2 AESA pic and news! #2332528
    Erkokite
    Participant

    Well if the RBE2AA 10 kW power output figure is true (don’t know exactly where I read it) then it is more than likely that the RBE2 had a considerably lower output which would “qualify” as limited output. Most newer fighter radars offer a peak power between 10 & 20 kW.

    That all E-scans suffer from performance degradation is true. PESA is even worse here as the transmitter loses (concerning all TWT based designs including MSA & PESA) means additional loses and antenna gain is usually lower as well. Another issue with the 2 lens system on the RBE2 is that the transmitted energy must pass two lenses before it’s being radiated meaning even more loses. The AESA solves at least these issues and if power output is increased than it’s understandable that a 50% range increase is achieved.

    Thanks, Scorpion. You answered TMor’s questions much better than I could. 🙂

    Anyways, speaking of the RBE2 PESA, my understanding is that it works much differently than other E-scan radars when it comes to beam forming. I think it uses dielectric lenses to combine vertical and horizontal beams from 1-D arrays to provide 2-D beam forming, rather than using a 2-D grid like other systems I’ve seen.

    Does anyone have a diagram or technical papers on this sort of configuration?

    Thanks.

    in reply to: Rafale's RBE2 AESA pic and news! #2332704
    Erkokite
    Participant

    RBE2 is a eletronic doppler not a meca one, it is far more sharp and discret than any captor stuffs!

    as about number of mmics or dimeter of antennas, bring somes serioux sources rather than smearing ones, because Thales keeps all this classified, as Pesa specifications etc..

    as about RCS pilots and engineers states that ef2000 has 1/4 tornado one, Rafale has 1/20 of mirage 2000D !

    Scorpion forget the pogrom ef2000 had last time they did BVR exchanges with Rafale to al darfha..
    as captor supposed range without lpi is closer to a weakness than an advange!

    I am well aware that RBE2 is electronically scanned. However it is limited by small antenna aperture, limited power output and poor performance at large angles compared to CAPTOR (and many other radars). The Rafale can largely make up for this disadvantage by low radar cross section and excellent passive detection capabilities. Nevertheless, I think the AESA antenna is critical in ensuring competitiveness with other aircraft. When it comes to raw power output and detection range CAPTOR is superior thanks to greater antenna size and power output.

    I’ve no doubt that CAPTOR’s high power if used without LPI can be a disadvantage against a good RWR. But that wasn’t my point.

    in reply to: Rafale's RBE2 AESA pic and news! #2333915
    Erkokite
    Participant

    Snafu :

    The Rafale Pesa RBE2 already demonstrated an edge versus the Typhoon ‘s Captor but since the last meeting where some Rafale had the RBE2-AA , the BVR fight was even more one sided .
    It also has to do with the RCS but this is not the point here . 😉

    Cheers .

    The RBE2-AA isn’t in service yet. I’d like a source showing that the RBE2-AA was flown against the Typhoon. I was always under the impression that any BVR edge demonstrated over the Typhoon had more to do with RCS than radar. The RBE2 has a much lower range than CAPTOR. It does have some nice E-scan advantages, but IMHO it’s kinda Rafale’s Achilles Heel.

    in reply to: Sea Gripen or Sea Typhoon? #2334095
    Erkokite
    Participant

    Draken was exported to danmark, austria and finland..saab 105 to austria.

    True. I had forgotten this. My mistake. Well let’s hope Saab can get some more Gripen orders.

    in reply to: MMRCA News And Discussion 7 #2334208
    Erkokite
    Participant

    I meant single crystal blades etc.

    And AESA radar not just modes.

    Single crystal blades are nothing new at all. Every MMRCA candidate has them. Even the Su-30’s currently flown by India have them. Now that they are getting help from SNECMA on the Kaveri this shouldn’t even be an issue.

    As for an AESA, all MMRCA candidates have an AESA. Perhaps the American offers are a bit more mature, but you can bet India won’t be getting full ToT on an American AESA (at least not on a non-watered down version), despite what the RFP says.

    in reply to: Sea Gripen or Sea Typhoon? #2334537
    Erkokite
    Participant

    Saab really does need to secure a major export order if they’re to have a future as an independent player in the fighter market. For my part I’d like to see them pick up the Brazilian contract.

    They received no export orders for the Tunnan, Draken, or Viggen at all. And yet they are still around today.

    in reply to: Canards and stealth. . . #2339352
    Erkokite
    Participant

    The ventral fins are canted, which probably helps, or they may be made of a radar transparent material.

Viewing 15 posts - 106 through 120 (of 507 total)