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J-21/J-31 Chinese 5th Generation Stealth Fighter

  1. #151
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    re: J-21/J-31 Chinese 5th Generation Stealth Fighter

    New picture of the J-31

    62dcf6c8jw1dyebbv1j5gj


    › See More: J-21/J-31 Chinese 5th Generation Stealth Fighter

  2. #152
    Stars and Ambassadors p2prada's Avatar
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    re: J-21/J-31 Chinese 5th Generation Stealth Fighter

    Quote Originally Posted by farhan_9909 View Post
    congrats china.

    now waiting for SAC J-20 kinda fighter
    and CAC J-31 kind fighter
    Unrealistic expectations. You don't see a Boeing kinda F-22 now, do you?

    J-31 is probaby meant for the Navy, so the Air force may use the same or a new project. Again, it is not necessary they will choose one from CAC if it is a new project.
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    re: J-21/J-31 Chinese 5th Generation Stealth Fighter

    Quote Originally Posted by rockdog View Post
    New pix:

    62dcf6c8jw1dyebbv1j5gj


    Stealthkenstein...
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    re: J-21/J-31 Chinese 5th Generation Stealth Fighter

    Quote Originally Posted by shiphone View Post
    downgraded version?.........I'm sorry, creating dissension is cheap...

    as we known, so far this project called as AMF is not for PLA but the international market...
    Quote Originally Posted by sayareakd View Post
    congrats China. Looks like to J20 is like truck fighter, while J31 is regular fighter.
    I think China will make further downgraded version for Pakistan for jf17 this would be for light fighter version.
    either you dont understand English or you have not read the comment properly, i said that China will make further downgrade version for small fighter like JF-17.

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    re: J-21/J-31 Chinese 5th Generation Stealth Fighter

    It's like a twin engine F-35 without the extra fat.

    It's more of stealthy Rafale than a F-35 equivalent, if we talk in terms of fuel capacity.

    So, around 5 tons fuel capacity compared to 8.3 tons on the F-35?

    lockheed f35 lightning ii 29

  6. #156
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    re: J-21/J-31 Chinese 5th Generation Stealth Fighter

    Quote Originally Posted by p2prada View Post
    Unrealistic expectations. You don't see a Boeing kinda F-22 now, do you?

    J-31 is probaby meant for the Navy, so the Air force may use the same or a new project. Again, it is not necessary they will choose one from CAC if it is a new project.
    well many chinese forums claims so

    2 fighter from CAC(heavy and light)
    2 fighter from SAC(again heavy and light)

    and the CAC light fighter rumours were that would be single engine

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    Senior Member J20!'s Avatar
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    re: J-21/J-31 Chinese 5th Generation Stealth Fighter

    Quote Originally Posted by shiphone View Post
    the jet took off @10:32 ,local time...and landed @10:43...the first flight lasts around 10 minutes...

    the company is a J11BS

    J-21/J-31 Chinese 5th Generation Stealth Fighter
    --------------
    and it did another two high speed taxi yesterday afternoon...
    272052672af780904bbaabe
    1107219glcc05l4xxlj0xh

    How appropriate, a J-10BS chase plane for J-20. And a J-11BS chase plane for J-31....
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  8. #158
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    re: J-21/J-31 Chinese 5th Generation Stealth Fighter

    Quote Originally Posted by asianobserve View Post
    Stealthkenstein...
    sour grape

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    re: J-21/J-31 Chinese 5th Generation Stealth Fighter

    Quote Originally Posted by farhan_9909 View Post
    well many chinese forums claims so

    2 fighter from CAC(heavy and light)
    2 fighter from SAC(again heavy and light)

    and the CAC light fighter rumours were that would be single engine
    Wishful thinking at best... The PLAAF and PLANAF have a huge demand for 5th gen fighters, but even they cant support 4 individual 5th generation designs at once... J20 and J31 are all the 5th gen fighters China will see for a while. The only other prospect is the anticipated bomber project from Xian, and even that probably wont fly before 2016...
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    re: J-21/J-31 Chinese 5th Generation Stealth Fighter

    Quote Originally Posted by farhan_9909 View Post
    well many chinese forums claims so

    2 fighter from CAC(heavy and light)
    2 fighter from SAC(again heavy and light)

    and the CAC light fighter rumours were that would be single engine

    I highly doubt it, no need for all these trouble. CAC may well add more stealth features on J10B to make it a Slient Fierce Dragon and share some squadrons with PAF.

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    re: J-21/J-31 Chinese 5th Generation Stealth Fighter

    Quote Originally Posted by sayareakd View Post
    either you dont understand English or you have not read the comment properly, i said that China will make further downgrade version for small fighter like JF-17.
    Nah, China won't make any further downgrade version for small fighters, no need and technically impossible, provided China may, quite possibly, upgrade in service 3rd gen fighters with more stealth feature, such as coating J10, 11, 15, 16s with RWA and make them "Scilenter"

  12. #162
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    re: J-21/J-31 Chinese 5th Generation Stealth Fighter

    Quote Originally Posted by J20! View Post
    Wishful thinking at best... The PLAAF and PLANAF have a huge demand for 5th gen fighters, but even they cant support 4 individual 5th generation designs at once... J20 and J31 are all the 5th gen fighters China will see for a while. The only other prospect is the anticipated bomber project from Xian, and even that probably wont fly before 2016...
    much better

    5th generation fighter and single engine are nt good unless you have a powerplant with atleast 200kn thrust
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    re: J-21/J-31 Chinese 5th Generation Stealth Fighter

    Quote Originally Posted by asianobserve View Post
    Stealthkenstein...
    The more I look at this plane, the more convinced I am that the F35's design data really was compromised. It looks like SAC was given the F35's design work and they modified it to suit PLA requirements.

    Two circa 20000lbf thrust engines instead of 1 almighty 45000lbf thrust P&W.

    LERX, large trapezoidal vertical fins and bigger wings for better lift and maneuverability than the bomb truck F35.

    A bigger more traditional centerline weapons bay ala J20, because of the space freed up by the lack of a STOVL requirement.

    A much smoother, better shaped stealth profile and voila! a much improved F35.

    Question remains though, which design can carry more fuel? Two engines will consume more than one, and the J31's larger wings may provide more room for fuel, but we'll see...
    LurkerBaba and asianobserve like this.

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    re: J-21/J-31 Chinese 5th Generation Stealth Fighter

    Quote Originally Posted by farhan_9909 View Post
    much better

    5th generation fighter and single engine are nt good unless you have a powerplant with atleast 200kn thrust
    Not necessarily true. F35 can offer you tons of anti-hypothesis. Powerplant on the platform is becoming less and less important as long as stealthy striker's theatrical purpose is concerned.

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    re: J-21/J-31 Chinese 5th Generation Stealth Fighter

    Quote Originally Posted by J20! View Post
    The more I look at this plane, the more convinced I am that the F35's design data really was compromised. It looks like SAC was given the F35's design work and they modified it to suit PLA requirements.

    Two circa 20000lbf thrust engines instead of 1 almighty 45000lbf thrust P&W.

    LERX, large trapezoidal vertical fins and bigger wings for better lift and maneuverability than the bomb truck F35.

    A bigger more traditional centerline weapons bay ala J20, because of the space freed up by the lack of a STOVL requirement.

    A much smoother, better shaped stealth profile and voila! a much improved F35.

    Question remains though, which design can carry more fuel? Two engines will consume more than one, and the J31's larger wings may provide more room for fuel, but we'll see...
    China's New Stealth Fighter. Not a repeat from December 2010.

    China's New Stealth Fighter. Not a repeat from December 2010.

    Posted by Bill Sweetman 6:38 AM on Sep 16, 2012

    The U.S. defense secretary is on his way to Beijing. Time to unveil a new stealth fighter...

    Short take-off and vertical landing has been one of the two driving requirements behind the Lockheed Martin Joint Strike Fighter design, the other being stealth.

    STOVL dictated the single engine, and the STOVL solution chosen for the F-35 demands a big vertical bay behind the cockpit, and a main engine located unusually far forward, to keep the driveshaft length within reason and to put the lift-cruise nozzle in the right longitudinal location for balance.

    This constrains the weapon-bay volume and shape, and effectively subdivides the bays into four zones -- two AAM bays and two heavy store sections. As Amy Butler reports in Aviation Week & Space Technology this week, too, the weapon bays, wrapped around the engine, get hot and noisy.

    If you ever wondered what a JSF might look without those constraints, we now have a live, physical example.

    Unfortunately ...

    ... it's Chinese.

    One of the photos of the new Shenyang stealth fighter, apparently designated J-31, that appeared on Chinese defense websites over the weekend is such a colossal gimme that it has to have been deliberate. Direct head-on shot? Check. Commercially available aircraft tug? Check. Extreme telephoto, so that perspective effects are lost in the noise? Check.

    Sheesh, guys, can't you make it a challenge?

    The J-31's wingspan is an F-35-like 37.5 feet, unless my Soviet-watching skills have deserted me. This makes it smaller than the Lockheed F-22 and considerably smaller than the Chengdu J-20. A good early guess is that the engines are Klimov RD-93s -- imported in large numbers for the JF-17 -- with a Chinese-built engine to follow.

    Turning to the side view of the jet, it looks as if the engines are installed to the rear of the bulkhead that carries the main landing gear. And with no lift fan bay to worry about, the designers have been able to install long weapon bays on the centerline: what will be interesting is how the inlet ducts are routed to optimize internal space.

    Overall, the most important point is that the J-31 does not look like a competitor for the J-20 -- but as a complement to it. Which, again, might point to the new fighter being a JSF to the J-20's F-22.

    And if you wonder about the detail similarities of the shape to the F-22 and F-35, remember this quote from 2010:

    In the past year (2009) alone, Lockheed Martin found “six to eight companies” among its subcontractors “had been totally compromised – emails, their networks, everything” according to Lockheed Martin chief information security officer Anne Mullins.

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