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halloweene

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Viewing 15 posts - 1,801 through 1,815 (of 4,136 total)
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  • in reply to: ECM pod can reduce RCS? #2143917
    halloweene
    Participant

    Where does it said Carbone is active cancellation system?

    Last time you posted that, it has been debunked as BS, i dont understand why you bothered to repeat the same thing again?
    http://forum.keypublishing.com/showthread.php?134900-Rafale-news-amp-discussion-part-XVI/page69

    In fact, the debunking WAS BSloudly claimed by sheer ignorant. Figure i was in contact with the company since… Why would i listen to idiots convinced that fibre optics are best audio cables? (generally speaking people who do not even know the wma standard used for their CD is a piece of crap and heavily downgraded from studio recordings (not to mention HOW it is downgraded…)

    I repeat things i’m sure about, with evidences in the desperate hope that some will listen instead of parroting their forum guru, whatever ignorant and arrogant he is.

    in reply to: If you had to choose between Rafale or F-35 #2143928
    halloweene
    Participant

    About range, configuration and flight profile, infos are available on Defesanet, given by a test pilot (JR Vianney Riller) who flew it for two complete weeks (one in Istres and one in St Dizier). About the sustained turning rate, there is an old test from Mike Yeoh i think, giving interesting data. Whowever, it was not strictly speaking sustained turn rate as speed declined a bit (and i stand corrected about that on that very forum). Sry, i’m very far from home and my computer file, cant give proper infos and links.
    MAX speed isn’t limited by air intakes which were the first fixed ones qualified for Mach 2 on Rafale A concept plane (very different from Rafale C and using Fé404 engines). But the air intakes diameter is limiting for a possible integration of 9T version of M88

    in reply to: Helicopter News & Discussion #2144025
    halloweene
    Participant

    Australian government auditor slams Tiger attack helicopter

    Did Aussie gov compare european built tigers to those built in Australia? Beacause some Airbus Helicopters employees were privately catastrophed by aussie’s industrialarrogance and incompetence (note : i didn’t mean they are right) and are wishing loads of luck to DCNS…

    in reply to: ECM pod can reduce RCS? #2145080
    halloweene
    Participant

    It has been told already: Everything a non-steath user might do, a stealth airforce can easier.

    Noone denies that. Question is… At which cost (in dollars, aerodynamics compromises etc.). In the end it also depends a lot on tactical environment, networks etc. All in all, usage doctrina of the platform.

    in reply to: ECM pod can reduce RCS? #2145082
    halloweene
    Participant

    One should distinguish between “active stealth” and “active cancellation”.

    Active cancellation is a “simple” technique that is based on:

    1. receiving the incoming radar signal
    2. generate a new signal that is identical but out of phase
    3. emit the new signal.

    The end result being that the incoming signal is cancelled. This works well for audio:

    https://en.wikipedia.org/wiki/Active_noise_control

    One should note that:

    1. the frequencies for audio aresomewhat lower than the frequencies used for RADAR (hopefully you can read the sarcasm here)
    2. Even for audio, the Wiki page states that:

    Thus one can safely conclude that active cancellation for radar frequencies is a nice dream, but nothing more than that.

    “Active stealth” on the other hand, encompasses advanced ECM techniques that, in some cases, makes the object “invisible” to the radar. I am no expert on the field and cannot tell how this works however several sources have referred to such techniques so most likely they do exist. And most likely Rafale employs such techniques. How efficient they work will most likely depend on the radar that one is trying to confuse.

    Not really. Active cancellation is used by a UK acoustics company for example in order to cancel electrical noise on USB cables (which is otherwise nearly impossible using linear systems that would require near as much energy as USB can power, if not more)

    in reply to: ECM pod can reduce RCS? #2145099
    halloweene
    Participant

    Weren’t the French working on some sort of podded active stealth system fairly recently?

    Not only recently. Pod “Carbone was very succesfully tested during MACE xxx exercise https://books.google.com/books?id=Y8kePYFK1L8C&pg=PA45&lpg=PA45&dq=pod+thal%C3%A8s+carbone&source=bl&ots=hOG9DHr8qa&sig=LAVNhXmQnDpmRTVpo172SCB0MjY&hl=fr&sa=X&ved=0ahUKEwjdnKn8s4rPAhXFVRoKHd6CA-IQ6AEIKzAC#v=onepage&q=pod%20thal%C3%A8s%20carbone&f=false

    in reply to: F-35 News and discussion (2016) take III #2152303
    halloweene
    Participant

    What new technology did the Rafale or Eurofighter bring to the table?

    btw, Only the US makes their dev & procurement programs as open as they are. Just try and get real numbers (ie not from an interview or other non-budgetary source).

    RAFALE dev coûts are public on sénateur site aswell as unit cost

    in reply to: Indian Air Force Thread 20 #2181636
    halloweene
    Participant
    in reply to: Missile kill ratios… #2185210
    halloweene
    Participant

    You are of course correct that it is possible to defeat a missile kinematically, but you also hit on one of the F-35’s key advantages… to defeat a missile in that manner you need to know that there is a missile in the first place. In a scenario where two 4th generation fighters are facing off both would expect to see and be seen by their adversary. When/how they fire their missiles is where a lot of the tactics come into play. A longer ranged shot would be easier to defeat, but holding your missiles until closer range has risks as well.

    If an F-35 were flying against a 4th generation fighter the F-35 would expect to be able to choose when/how it fired more or less at will. Its opponent might only become aware it was in danger when the incoming missile went active, far too late to initiate the types of maneuvers you are describing.

    I don’t totally disagree, but there are missile departures warning stuff for that.

    in reply to: Indian Air Force Thread 20 #2189547
    halloweene
    Participant

    We are no more discussing a contest with the P3 but with the new generation capable to loiter at high alt with the same mission efficacy and have lower transit time.
    Most of the P3 upgrades are done on cost grounds.
    But then the Atlantique was built on purpose and it was a remarkable airframe.

    I agree on both points. I did mention that Atlantique wasn’t anymore built and therefore cannot be a contender. Enecdotically, at the time the weapon system was designed, HDD were not accepted due to fragility. The weapon system had to answer any of the 13 operators requests in less than 20 millisecs with only a few hundreds Ko Memory… I let you imagine the “purity” of the code ;).

    in reply to: Indian Air Force Thread 20 #2189626
    halloweene
    Participant

    I agree that a European equivalent would have been highly desirable, but I don’t blame Airbus for the failure to produce one. That’s the difference between us.

    Airbus had a proposal (A319/A320 with FITS, sensors to customer specification), & offered it to European governments. But nobody would back it. Without a home country order, it’s unlikely that other potential customers would even consider it. They wouldn’t want to be left with an orphan aircraft.

    Atlantique II is not anymore produced (for ages). When tested in a south east asian country it really banged P3 and POTUS had to phone. (personal comm from a friend directly involved).

    in reply to: F-35 News and discussion (2016) take III #2189644
    halloweene
    Participant

    Nice one. Hope you won’t have the “too precise” issue 😉

    in reply to: Indians incredibly unhappy with mig-29 and carrier #2189699
    halloweene
    Participant

    That very much depends on whom you ask..
    IAF = we need 90% servicebility.
    India goverment = our AF need around 70-75% servicebility.

    Cause the higher you raise it, the moar $$$$

    Yes, and in an exponential way..; Sometimes it is cheaper to have 3 planes with 66% availability than 2 with 100% and loads of exotic spare parts rusting…

    in reply to: Indians incredibly unhappy with mig-29 and carrier #2189745
    halloweene
    Participant

    I am not sure how to interpret these figures.. Is the low serviceability of the MKI related to the aircraft itself? Or rather to Irkut? Or is it fault of Indian way of maintaining the things like not willing to pay for spares?

    or maybe simply they do not need more availability?

    in reply to: Helicopter News & Discussion #2190476
    halloweene
    Participant

    I’m dubious : firstly you accused AH problems, then extended sophisticated defense suite etc. Sorry if you did not intend to bash, but it really looked like so… The history have nothing to do with airbus helicopters.

Viewing 15 posts - 1,801 through 1,815 (of 4,136 total)