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Nick_76

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Viewing 15 posts - 496 through 510 (of 2,296 total)
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  • in reply to: Rafale news II : we go on #2514017
    Nick_76
    Participant

    And? French posters very often claim Rafale is better than Typhoon, actually I know a French poster who claims it is the best aircraft on earth, even better than the F22. The French basically claim Rafale won the “real” export competition each time it looses out, has Rafale actually even lost once due to something else than “evil US politics or evil British bribes”? You make me laugh.

    By the way, the answer to my question seems to be: I have no source for my claim.

    i have to agree with kovy. whether it be british posters or british journos or british mags, they are full of how ef is the 2nd best fighter around and how so and so told them and this and that. afm goes so far as to publish “anonymous” or whatever jingoistic claims in this regard which read like fanboy drivel from the internet.
    seriously, the ef camp have gone so overboard with the propoganda that it isnt even funny.

    in reply to: IRBIS and the detection of low RCS targets #2514029
    Nick_76
    Participant

    http://www.NIIP.ru
    Antenna Type BARS: radar antenna lattice hydraulically driven
    maximum deviation in the angles
    Accompanied by a solitary goal degrees.:

    Azimuth +70
    on the corner of the place +40
    Zone crawling with search and seizure goal
    : in dogfights, hail.:
    Azimuth +3; +10 +3; +10
    on the corner of the place -15…+40; +7,5 -15 … +40; +7.5

    Receiver

    Channel 3
    noise ratio, db 3
    The transmitter
    kw in power, at least
    4-5
    1.2
    fixtures 1
    Programmable Signal Processor
    speed of data entry, MHz 28
    peak performance in the discharge 75
    Processor management of radar
    number of processors 3
    flash-memory processor, mb 16
    Size static memory processor, mb 16
    The regime of air-to-air
    Range takeover fighter, not less, km:
    — to counter courses 120-140
    at dogonnyh courses 60
    The regime of air-to-surface missiles
    ΠΊΠΌ: Detection range, not less, km:
    — railway bridge 80-120
    — Group tanks 40-50 40-50
    — destroyer 120-150 120-150
    SAR Maximum resolution, m About 10 m

    what was the point of that utterly bizarre post above, machine translating and mauling a webpage which is available to everyone here in english from the website itself? do you now think you discovered the niip website which this forum and many others have been aware of for couple of years now? plus, if you believe that niip is stating the exact performance above, then please- theres another bridge that i must sell you.

    plus it is entirely irrelevant to the data about captor.

    first you copy paste text and write stuff which is so “out there” that it doesnt make sense. then when asked for sources you come up with more copy pastes and entirely irrelevant claims.

    weird, really weird.

    in reply to: IRBIS and the detection of low RCS targets #2514313
    Nick_76
    Participant

    dear kk, even i can copy paste a lot of stuff from different websites and nice images and use it to massage my claims. i have seen the niip webpage and all i can do is shake my head at your mine is bigger than yours nonsense whenever a serious discussion comes up.
    the point asked for was simple, do you have anything, apart from back of the envelope +/- to prove that the captors gain is 46 db etc? no? dont have it, admit it, pls dont run around with all these copy pasted images and text.

    in reply to: IRBIS and the detection of low RCS targets #2514590
    Nick_76
    Participant

    1*Your Radar wave travel only with light speed and the target reradiat not instantly your radarbeam. Your Radarbeam could move faster in x and y direction!
    2*As faster your beam travel as more time sidelobes and shift sidelobes produce your PESA. That trigger RWRs. πŸ˜‰
    3*A Radar can not simultaneously transmit and receiving!
    4. Then is a ferrit lens a analog part and not digtal controlled!

    What is your Problem, theortical is 49db possible with a 70cm flat antenna. Therefor is the 36 db for a 1mtr Bars very very extrem low. πŸ˜‰
    No wonder! The lenses produce each betwenn 2 and 3 db loss and you need one plane for x and one plane for the y direction. Than reflect the lens surface some energy back (~50%) to the transmitter. Than has the block converter 3db loss, that is pretty high. With a Perot front feed antenna has you only a antenna gain of 34db at a diameter of 1mtr. No wonder, the energy must twice through phasesifters for transmitting and receiving direction, that doubled the loss in the phaseshifters.

    am i supposed to take this gibberish seriously?
    frankly, half knowledge is a dangerous thing, and your above post is a perfect example of strung together theories, tall tales and some ego massaging of captor-m being better than everything else out there…all of which i am least interested in.

    fyi, bars has no mixture of lenses and phase shifters…and your theoretical values are all paper claims. wheres the evidence, like i asked of the captor actually having your claimed gain? similar made up figures of theoretical maxima can be quoted for any radar from the bars to the apg-73 to the apg-63. what has been achieved is entirely different. so either post actual authoritative figures for the captor-m or quit wasting our time by pretending to be citing these details when you dont have them.

    i can as well spend time with serious posters like scorp et al instead of wading through your post above.

    in reply to: Supercruising(?) F-16s for India #2514598
    Nick_76
    Participant

    supercruise viz the article above is all fine and dandy, but as others have pointed out, it needs to be sustainable for an adequate range and with a decent payload, to be worth anything in practical terms.

    in reply to: Stupid ? F-22 vs Typhoon? #2514602
    Nick_76
    Participant

    well said. just because trash is published doesnt make it authoritative. plus ppl tend to believe whatever supports their belief bias/ pov and thats what allows rumour mills to thrive. if there werent suckers being born every minute, there wouldnt be scamsters. and so on.

    in reply to: F-15 breaks up in flight. #2516338
    Nick_76
    Participant

    Djcross, this report says MC D messed up by manufacturing the longerons to lower specs than required.

    http://www.flightglobal.com/articles/2008/01/11/220799/pictures-manufacturing-defects-caused-cracks-that-downed-usaf-f-15.html

    Fatigue cracks started by manufacturing defects in a fuselage longeron caused the in-flight break-up of a Boeing F-15C Eagle on 2 November 2007, the US Air Force accident investigation has concluded.

    Examination of the wreckage of the crashed F-15 revealed the right upper longeron, a critical load-carrying component in the forward fuselage, failed because of a fatigue crack that formed where the metal was thinner than specified in the blueprint.

    Instead of being the specified 0.090-0.110in (2.3-2.8mm) thick, the flat top, or web, of the aluminium longeron that failed was as thin as 0.039in – less than a millimetre – in the area when the fatigue crack formed.

    The thinning was caused when the longeron was machined by McDonnell Douglas during production of the aircraft, which was delivered in 1982. Similar manufacturing defects – undercuts, ridges or surface roughness that could potentially cause stress concentrations – have been detected in upper longerons in 40% of fleet.

    in reply to: Ability of RuAF and Russian Navy to destroy US CBG #2516344
    Nick_76
    Participant

    So they were out in force flying around just to enjoy the scenery? Sounds like you missed about half of what was written.

    i read the whole thing, but you are missing the point – shades of what you said above?!

    the point made was simple. that the soviets were not in full readiness as there was no threat of a shooting war, same as the USN wasnt when the soviets overflew the carrier. andy picos “my ding dong was biggest” commentary is interesting but only tangentially so in that case same as the russians bragging about how they got the carrier dead to rights etc.

    and since it was not a case of high tension, war about to break it, they wouldnt have been operating on full readiness apart from just doing the usual with the other carrier. flight hours, maint is expensive, even if you are the soviet union.

    the soviets flying out in force thereafter is akin to the us carrier scrambling after the russians overflew it.

    but the issue is that if both sides were on full alert, could the us have pulled it off? that is yet to be proven despite what pico writes.

    Nick_76
    Participant

    cancelled by iaf in favour of keeping logistics unified around a single ajt type which is sufficient for their needs, the hawk.

    in reply to: Ability of RuAF and Russian Navy to destroy US CBG #2516481
    Nick_76
    Participant

    Tell ya what. Why don’t you go read this:

    http://www.navweaps.com/index_tech/tech-031.htm

    then come back and tell us how easy it is. And that was at the height of the Cold War with the USSR having a HELL of a lot more resources than Russia does now.

    “…At the initial objective point the ships have managed to penetrate without the opposition having any clue that the force was within 2,000 miles. Limited air operations have been conducted to this point with no aircraft transmitting radio, radar, or any other detectable phenom. The aircraft launch “ziplip” and fly a mission without any transmission. Aircraft stay below the radar horizon of defense sites which are less than 200nm away. The E2 flies a passive mission in readiness, but silent unless called to go active.

    At the objective “mirror image strikes” are flown. These are full strike missions by the airwing flown on a bearing 180 degrees out from the actual objective. Again, no active transmissions. The entire launch, strike, and recovery are flown without a key being touched. In NORPAC 82 these mirror image strikes within range of Petroplavask and the SSBN bastion in the Sea of O are conducted for 4 days without being detected by the opposition. All day, every day, the E2 orbits on a passive profile. All of the ships operate in passive mode simply listening. In a real war our presence would have been deduced on the first strike as the survivors picked themselves out the rubble of their airfields. But for this operation we continued to train in silence.

    One should not miss the implications of this feat. A strategic strike capable force operated with complete impunity for 4 days within range of strategic assets without being detected.

    Read the whole article, you might learn something.

    well, if we can write off the su strike against us carriers as being due to ops during not full war etc, the same can be done for above. dont think soviets were operating at 400% readiness day in and night out. question is whether above could be done when they were at full alert and vice versa by sovs to us carriers.

    in reply to: IRBIS and the detection of low RCS targets #2516501
    Nick_76
    Participant

    Since that phased array can shift beam in milliseconds without entire antenna turning.
    Can it that really? No!
    What is with the signal propagation delay?
    The spot moved than halted (Transmitting –>Duration–>Receiving–>Processing) than moved than halted(Transmitting –>Duration–>Receiving–>Processing)…
    A full scan need some 1/10s for EScan, depending on the distance and puls retention frequency!

    thats true only if we consider the entire mechanical scan turn, not for the escan. plus with phalcon class AWACS, I dont consider the few ten degrees on either side to be a great need anyways.

    in reply to: IRBIS and the detection of low RCS targets #2516505
    Nick_76
    Participant

    The Bars antenna is not only one Antenna.
    You can’t radiat L and X Band with the same dipol.
    g= Pi^2/Lambda^2 x D^2
    g= Gain
    Lambda= wave lenght
    D= Antenna diameter

    this is just generics.

    but wheres the evidence about the gain of the captor-m in reality? wheres the manufacturers data as you were claiming to have?

    in reply to: Super Hornet buy to be reconsidered. #2519620
    Nick_76
    Participant

    not going to happen in the next 10 years which is the time frame we’re talking about

    really? if the us wants, it cant have a stealthy agm in 10 years? are there no stealthy agms available to aussie from int’l market ie mbda , eads?

    in reply to: Ability of RuAF and Russian Navy to destroy US CBG #2519623
    Nick_76
    Participant

    the entire point of the brahmos’s s shaped maneuver is to throw off tracking sensors and attack from a different axis.

    instead we have irrelevant arguements going on about the ability of essm to engage a 10 g target, which is all very good but irrelevant. and some asides about the “value of Brahmos’s S- shaped maneuvers” and how pointless they are! sure, so much so that much effort went to include them into the missile, the ppl making the missile had way too much time and money that they spent the same in making sure it worked.

    the brahmos is not going to be jinking and turning as it heads towards the target, its going to jink at a time according to what the mission planning system loaded into it, per what esm and sigint picked up about which threat axis would be most likely to succeed vs a likely targets sensor reach. a sneaky mission planner might even have the brahmos get within the outer detection limits and then change the axis of attack.

    now its a different point entirely about the reduction in range this waypoint based change will cause depending on how many times its done, whether its a large turn etc, whether even so it will be detected by an e-2 etc or whether a submarine launching it as close as possible will complicate things.

    these are all reasonable debates and it can be argued that with the us’s sensor reach a cruise missile can be picked up asap even if it does a sneak turn. but the same may not be true of navies without onboard e-2s but dependent on large onboard radars.

    so at least lets keep the proper context in mind, not dismiss the s curve out of hand because it suits one to do so, or play it up as some sort of artificial intelligence or whatever either.

    in reply to: Indian MMRCA saga – Jan 08 #2522996
    Nick_76
    Participant

    Nick_76, most missiles like Kh-31 krypton do not weigh more than 600 kgs. A2A missiles weigh 100-175 kgs only, and hence within 4000 kgs of weapon-load, substantial number of 6 A2A missiles and 2-4 A2G munitions can be carried. This is comparable to the mission load-outs of F-18 and F-16 as detailed in fas.org.

    As per Vayu sena, the total time for the 1,500 km range is 4 hours of which combat time is 10 minutes if I’m unmistaken. The range figure is for the normal fighter config fuel load of 5270 kgs, which in turn corresponds to 3500 kgs of weapon load as per airforce technology’s webpage.

    As regards the Tejas, I had requested one member at bharat rakshak forum to clarify whether the figure of 860 kms range of Tejas is the combat radius or full range, and at what weapon-load does it apply, to which he had given detailed calculations. I do not recollect the conversation, but it may be there in their archives. I had asked another member who had attended the Aero-India 2007 air show and he had stated that the worst-case combat-radius of Tejas on internal fuel is 800 kms and with external pods the range is 1,200 kms for fighter configuration. I was unable to find the thread in archives.

    abhi

    please understand what sens wrote and what i am asking, these range figures you are giving are useless since they dont account for fuel allocated for different speeds, different flight profiles and reserve issues. you can get closest to “clean” in a2a, but in strike etc which iaf is very particular about, range will vary heavily.

    just think, one brahmos on centerline, and what do you think drag will be on low, low, low?

    and the member on brf who gave you those numbers on tejas wud surely admit that different speeds and payload wud affect those numbers wudnt they?

Viewing 15 posts - 496 through 510 (of 2,296 total)