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  • in reply to: PLAAF Thread 15 #2368988
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    And here’s a rough drawing by a big shrimp on what SAC’s 4th (5th) gen fighter will probably look like (next to T-50) first posted by siegecrossbow on sdf.

    http://i.imgur.com/c8QsF.jpg

    a V tail – yf23/ macair JAST style?

    interesting…

    couple years ago some body told me that’s one direction they were going with. I didn’t believe them because CAC has already won the competition.

    in reply to: Embraer KC-390 #2369904
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    Participant

    Wings and layout for Military Transports are sized for field performance not for efficient cruise and climb like civil.

    thus I don;t think it would be profitable for mass market. may be niche, not mass.

    btw, Embraer will anounce a A320/737 competitor sometimes this year.

    😉

    in reply to: PLAAF Thread 15 #2372924
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    Participant

    Another yellow skin, probably fresh from production line. Those images are de facto official. It seems the authority is going to de classify the a/c carrier alongside with its shipborne fighters.

    what a fantastic shot.

    in reply to: Compare/Contrast: JAS-39 and JF-17 #2373158
    i.e.
    Participant

    No, the lower number is the same fuselage with a semi-active head.

    SD-10 = PL-12’s export desination.
    PL-11 = monopulse semi-active seeker MRAAM based on Aspide.

    there is a active version of PL-11, but not in service.

    in reply to: Compare/Contrast: JAS-39 and JF-17 #2373185
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    Participant

    The Egyptians will not get the AIM-120s. The U.S. Congress is very heavily influenced by the Israeli lobby, AIPAC.

    .

    even if they get AIM-120, I have no doubt that the israeli’s already has the missile specific ECCM design and built into their jammers.

    But it’s still much better than the semi-active AIM-7 Sparrow. The performance specs of the SD-10 lies somewhere between the AIM-120B and AIM-120C.

    with home on jam/emission!

    in reply to: Compare/Contrast: JAS-39 and JF-17 #2373447
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    Participant

    Gripen is superior to both the JF-17 & Tejas but I differ from the way you are considering it. Any aircraft has to be considered or compared by separating two vital stati

    1) constants
    2) variables

    Airframe or the structure of the aircraft is a constant and is likely to remain mostly the same for its entire life. Except for maybe few supports for strengthening the joints like wing-roots etc during life extension. Another constant is the aerodynamics of an aircraft.

    Whereas almost everything else is a variable that can changed/replaced/upgraded.

    I brought it up only because people always do an aircraft comparison only based on the avionics saying radar, datalinks, weapons etc of X aircraft is better than Y and hence X is better than Y…It may be true when considering the system as a whole…

    In the case of JF-17, considering the above….it can be installed with all the avionics of the Gripen and make it equal in the variable(s) department. But it won’t be able to match the Gripen in the (constant) airframe department where Gripen is superior…. Unless the design is upgraded (new batch), in short a new design.

    All three – JF-17, Tejas LCA & JAS-39 Gripen – belong to the same size class but capablility wise they can be categorized as low-medium-high, based on the constants.

    In the case of Gripen & JF-17, I see a much greater success (read desirable) for the JF-17 because it would be cheaper to buy than the Gripen and provide most of the options that a costlier Gripen can provide.

    basic airframe performance can be tweaked over life too,
    engine upgrade for example,
    it is not unheard of that in XX batches the wings structures are slightly redesigned or VT is replaced with different material to save XXX lbs or weight.

    they went through a program where first JF-17 Flight test article has a substantial different intake and LERX than the final version.

    takes effort yes but not extrodinarily heavy effort compare to what you have to go through with a radar /ew suite upgrade, which also meanst alot of flight test.

    things is they have a good program, good team working on it that has lot of experience with it already and it is stable team.
    that’s more important factor in determining success and failure of the program than anythingelse at this stage.

    in reply to: Compare/Contrast: JAS-39 and JF-17 #2373449
    i.e.
    Participant

    2nd year Mech-Eng fatigue life calculation:D

    bit more complicated than that but not much more so.

    in reply to: Compare/Contrast: JAS-39 and JF-17 #2373557
    i.e.
    Participant

    when considering the western stuffs its better to take note that it most likely will be with the small star with lots of conditions like we see in advertisements. So a detailed description of how the 8,000hrs is achieved or how it is counted (like, right from engine start etc) would be good. It would also be a good to know if the 8,000hrs is the max achievable airframe life with a mid-life upgrade.

    very true,

    an airframe that’s designed under an assumption of xx hourse with a certain distribution of gs during service life. with anther level of gs during life that may not hold true.

    even the frequency of g’s matter.

    in reply to: KFX-III TENDER IS ON #2373797
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    Participant

    Well the real question is would Rosboronexport even respond to the South Korean request to tender?

    Do they regard it a worthwhile effort to tender their latest fighter to a country that is highly likely to chose the American product (my money is on the F35) when it comes to the crunch. To reply to the tender and then go through the selection process costs significant money and exposes the technology to a country and airforce with VERY close relations to the USAF.

    For that matter would the Eurofighter consortium regard it as worth it considering what happened on earlier tenders and the fact that South Korea is clearly interested in a Stealth fighter.

    agreed.

    They will go for JSF.

    in reply to: KFX-III TENDER IS ON #2373800
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    Participant

    I was mostly thinking of electronics and sensors here. Not radar or main weaponary. If the US is willing to sell I’m sure Israel or France would be happy to step in ad fill the void. But why not stick with the Rus. weapons?

    Rus weapons are fine, except will russians sell their latest R-77 derivative with all of its ECMs ECCMs to an american ally, or the radar that guides that weapon, with all its modes and all that to an american ally, where their entire military force is still under joint command by the American Military!

    Bollocs. The DPRK has no monney to pay with, thats why the Rus. don’t sell to them nowadays. They aren’t “ideological brothers” any more u know…

    I am no russian experts but, looks to me,
    Russian wants influence not money here, NK for them is another issue where they can leverage to exert influence in NE Asia.

    in reply to: KFX-III TENDER IS ON #2374065
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    Participant

    Can’t they implement some 3rd party/neutral data protocols for interfacing of russian/korean/western systems without risking the integrity of either ?

    what avionics and system bus does PAK-FA use? some standard bus or some propriotery stuff?

    only parties who has done some thing like that…
    i.e. take a airframe, stuff it with their own state-of-art electronics, and sell it to third parties, that I know of, are Israelis. and those are either not shooting platforms or old legacy platforms.

    on some cheap mig-21 type of legacy aircraft may that can be done. but then what’s the point. you have the gut the whole thing to put in your own stuff anyways. may be the Russians can deliver just shells to Korean Aerospace to fitted out with their own kit, but then still during the design and integration process who gives data to whom??

    fighters are too integrated these days to pull off a stunt like this between two parties that has political obstacles in the way.

    buying fighter these days are not about just the airframe performance anymore.

    in reply to: KFX-III TENDER IS ON #2374067
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    Participant

    The Indians could probbably do that for them. And they are all ready in the project, so no big risk for Sukhoi/Russia there..

    But I agree with you. PAK-FA is not an realistic option in this tender. Prolly just a SO-KOR stunt to soften up LM on the ToT when buying F-35…
    But the idea as souch is interesting.

    with all due respect the problem in this scenario is not at Indian/Russian end, even if India has the capability to integrate a EW/Radar/Missile combo with out Russian support.
    Do you think Americans will hand over a radar/AMRAAM combo to a Russian/Indian Consortium to integrate?
    I thought so too.

    SK buys russian stuff as a bribe to russia for not send toys to NK.

    in reply to: KFX-III TENDER IS ON #2374087
    i.e.
    Participant

    I think PAK FA isn’t necessarily an unlikely and much less a politically risky choice.

    There will be a time in a not too distant future when the US won’t be able to do whatever it wants in south east Asia. China will be the new kid on the block, and it will blackmail the US into giving up Taiwan for starters. And if China doesn’t want the US to help SK, it won’t.

    China can pull the plug on the US by just stopping to buy dollars, and the US know it. If PAKFA allows SK to defend itself more autonomously, then it should go for it.

    Nic

    sorry for sounding too political:

    Taiwan never was, is, and will be US’s to “give”,
    just as in 1949 China was never US’s to “lose”, it was an after math of a painful civil war and the issue shall conclude as such.

    US is still the biggest kid on the block. period. for the foreseeable future. unless some sort of implosion. but that does not mean it will have the unbridled freedom of action that it never truly enjoyed in the height of its power.

    empire comes and goes, china is just there. the bit about dollar buying is all hype. it only shows the interdependence of the pacific rim economies.

    ,,,

    back to topic.

    PAKFA will not be a realistic choice, as the first PAKFA SK get will get ripped apart by Americans foreign tech evaluation people.

    if PAKFA is to be “Westernized” (new radar/comms etc) then the whoever does this “Westernization” will force the other to hand over too much sensitive data that no one is willing to give.

    In end SK will go to a American solution, again.

    in reply to: Compare/Contrast: JAS-39 and JF-17 #2374093
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    Participant

    I imagine quite a few countries will show interest in the JF-17. If the up front costs are as low as advertised it could be a real bargain, a cheap multi-role aircraft with very credible performance. Not at all aware of what the thru life costs will be tho. And it’l be very attractive to those countries that find it politically inappropriate to get western planes.

    JF-17/FC-1 is designed from ground up to have a pretty low life cycle cost and maintenance friendly.

    and the truth is fuselage hour designed into western fighters assumes that all airframes fly to maximum life, in reality one can conserve much of the hours by flying and training on selected airframes and advanced trainers, only to use those hours in a major surge when required.

    also key FC-1 is an all metal airframe that does not require very advanced metallurgy technology to produce. for example no big single piece titanium load bearing bulkheads etc. if one can make a Mig-21 airframe one shouldn’t have any glaring bottleneck making FC-1 airframes.

    perfect for countries who can’t afford to invest in the full spectrum of manufacturing tech but still wants a indigenous production facility.

    I think for Paf’s Karma production line, the final work share is for Paks to produce the fwd fuselage, wings and all empennages, including fuselage frames and wing spars, while CATIC (chengdu) supplies the rear fuselage and landing gear.

    I assume Egypt is looking for the same thing after their good experience with K-8. all signs pointing to that they are about to sign on the dotted line.

    oh do I sound like a CATIC salesman do I. 😀

    in reply to: Compare/Contrast: JAS-39 and JF-17 #2374111
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    Participant

    well,
    looks like Egypt is interested in FC-1/JF-17.
    single and twin seater.

Viewing 15 posts - 361 through 375 (of 1,076 total)