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Thread: J-20 Mighty Dragon stealth fighter

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  1. #41
    Professionals Martin's Avatar
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    Re: J-20 Mighty Dragon stealth fighter

    Quote Originally Posted by The Quantifier View Post
    Significant new developments for the J-20




    We've already seen the new RAM, but here's a far more significant development (or more):

    1) New shaping of the inlet, as well as a slight increase in bulge of the DSI. Does this suggest a new engine (as the airflow entering the engines have now changed)? Exciting times...with some luck it might even be a pair of early WS-15 prototypes.

    2) Introduction of EOTS window below the nose of the aircraft (F-35 esque).

    3) Canards look slightly thinner, which reduces frontal RCS. (although it could simply be perspective and the new paint job wrecking havoc with perceived dimensions).

    4) HUD looks slightly enlarged, with the shaping changing from a rectangular to a stretched octagonal shape from the looks of things.

    5) External weapon hardpoints have been modified to be more streamlined. Again, I reckon this is a move to reduce front RCS.

    6) Detonation cords lining the new canopy. Suggests a new ejection system for low altitude ejection (according to no_name).

    Plane looks even more sexy than before from the front now. Looking forward to seeing more of what the guys at Chengdu can design.

    (Thanks to no_name from SDF for the first image, xiabonan for the second)
    It has been three years since the January 11, 2011 debut for the Chengdu J-20 stealth fighter.

    Given the numerous changes, this must be the third prototype.

    We only have four years left until mass production in 2018.

    We have seen three prototypes in three years. This means we're seeing an average of one new prototype per year.

    China looks like it's making good progress. The Chengdu J-20 is rapidly becoming very polished. It is interesting to see the air intakes resemble the Shenyang J-31 with the downward slope on the upper end of the inlet.

    ----------

    Everything is moving along at the expected pace.

    During the seven years between the J-10 prototype "first flight" on March 23, 1998 and its mass production in 2005, there were six J-10 prototypes built.

    The Chengdu J-20 is following the same pattern of development as the Chengdu J-10 predecessor.

    There will be approximately six prototypes built in about seven years (e.g. 2011-2018). Chengdu benefited tremendously from the J-10 experience. Many of the tests for the J-20 regarding aerodynamic performance will be very similar to the J-10.
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    Last edited by Martin; 17th January 2014 at 10:27.
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  2. #42
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    Re: J-20 Mighty Dragon stealth fighter

    New Side comparison shot



    We can see some more developments on the new 2011 prototype (i.e. J-20 designation(20), first batch (LRIP?)(1), first prototype)(1):

    1) New rear design.

    2) What looks like a new sensor next to the inlet / underneath the canards.

    3) Removal of initial testing sensors from the Batch 0 prototypes.

    4) Pitot tube has been altered to be longer but narrower.

    5) (Perhaps new engines as the nozzles look very slightly different. Won't know for certain without a rear shot of the plane)
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    Last edited by The Quantifier; 18th January 2014 at 12:22.

  3. #43
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    Re: J-20 Mighty Dragon stealth fighter

    The differences between the latest No.2011 J-20 and No.2001:










    1.smaller aileron controller
    2.smoother & converged down intake opening (streamline with body)
    3.orange optic sensor under the nose
    4. edge trimmed rudder
    5. changed parachute housing
    6. smaller engine deflector(?), added saw-like feature
    7. canopy with re-enforcement, and a shoot-through ejection seat(?)
    8. changed paint from black to silver-grey.
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    Re: J-20 Mighty Dragon stealth fighter



    Possible Pre-Flight testing in preparation for a flight tommorow on Chinese New Year (CAC have a habit of setting important flights on important dates ). Thanks to Deino on SDF.

    Quote Originally Posted by Red Dragon View Post
    The differences between the latest No.2011 J-20 and No.2001:
    2.smoother & converged down intake opening (streamline with body)
    If there are any engine experts on here, feel free to correct me, but I expect they decreased the airflow and thus cooling for the engines on purpose to achieve a higher efficiency of combustion and thus a greater thrust rating. Analogous to warming up your car's engine before attempting to drive off.

    To do so would indicate that China has very high confidence in its engine production quality as the engines are bound to run hotter with the new inlets. Of course, this isn't much of a surprise seeing as the advances we've made in Materials Science should allow us to do this.
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    Last edited by The Quantifier; 30th January 2014 at 23:04.

  5. #45
    Professionals Martin's Avatar
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    Re: J-20 Mighty Dragon stealth fighter

    Chengdu J-20 stealth fighter Panoramic Glass Cockpit Display




    "Cockpit: The aircraft features a 'pure' glass cockpit (two large color liquid crystal display (LCD) and several smaller ones and a wide-angle holographic head-up display (HUD)). Many of these subsystems have been tested onboard J-10Bs to speed up the development."
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    Re: J-20 Mighty Dragon stealth fighter

    New images of the J-20 undergoing what seems to be pre-flight testing!




    (thanks to AssassinsMace)
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    Re: J-20 Mighty Dragon stealth fighter

    Henri Kenhmann's back with two nice videos of the J-20 2011 undergoing taxiing exercises and weapons bay testing.




    The engines sound slightly different. Not sure whether that's just me or whether its something significant (new engine? revised WS-10?).
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    Last edited by The Quantifier; 22nd February 2014 at 12:19.

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    Re: J-20 Mighty Dragon stealth fighter

    The J-20 2011 has finally flown its first flight. Will upload images when I get home tommorow. Congratulations to the guys at Chengdu for the fantastic job they've done this year!
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    Re: J-20 Mighty Dragon stealth fighter

    Maiden flight video

    There's also an excellent flypast from the J-10 chase plane as it comes it to land at the end as well.





    Look at the side of the body. You can see more Hexagonal panels installed there which aren't just installed near the 2011 logo...any idea what they are? My initial guesses was some sort of active camouflage a la Adaptiv but that doesn't seem feasible at the moment and would be a little heavy to be fitted on the plane. More likely to be an infrared / radar sensor?

    There's also a frontal RCS-generating obtrusive teardrop shaped object in the same area as well. Is this for RCS measurements or does it have a more critical purpose on the plane that justifies its extra RCS?
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    Re: J-20 Mighty Dragon stealth fighter

    J-20 #2011 continues it's test fly today

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    Re: J-20 Mighty Dragon stealth fighter

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    Re: J-20 Mighty Dragon stealth fighter





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  13. #53
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    Re: J-20 Mighty Dragon stealth fighter

    Chengdu J-20 is superior to F-35 in eight important ways

    'The End of History': 25 Years On | The Diplomat

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    Re: J-20 Mighty Dragon stealth fighter

    Fourth known J-20 prototype makes first flight

    Richard D Fisher Jr, Washington, DC - IHS Jane's Defence Weekly
    28 July 2014




    The fourth prototype, with the tail number '2012', has the same design modifications as the third prototype. Source: via Top 81 web page

    The fourth known prototype of the Chengdu Aircraft Corporation (CAC) J-20 fifth-generation fighter made its first flight on the morning of 26 July, according to Chinese aviation websites.
    The fourth known prototype of the J-20 fighter made its first flight on 26 July. (via Top 81 web page)
    According to online postings by local spotters, the prototype flew for nearly two hours after having undertaken taxi tests since early July. The first hints on military web forums of a fourth J-20 prototype with the tail number '2012' emerged in late June, with clear photos emerging by mid-July.
    Images show that '2012' features the refinements first seen in the third prototype, '2011'. These include an undernose faceted shape to hold a future electro-optical targeting system, adjusted air intakes to aid engine air flow and clipped tips on the vertical stabilizers.
    The new J-20 prototype does not give any outward indication that CAC has installed an indigenous turbofan engine, despite much online speculation. The status of the J-20's intended WS-15 turbofan is not clear, and it is possible that initially deployed J-20s may use a Russian-made turbofan, perhaps an upgraded version of the Saturn AL-31 or the newer AL-117S.
    In mid-June prototype 2011 reportedly left the CAC airfield to join its two other stablemates at the China Flight Test Establishment (CFTE) at Yanliang Airbase in Xian Province.
    In late April an Asian government source told IHS Jane's that 20 J-20s, or about one regiment, could be deployed by 2020.

    http://www.janes.com/article/41254/f...s-first-flight



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    Re: J-20 Mighty Dragon stealth fighter

    Quote Originally Posted by Martin View Post
    Chengdu J-20 is superior to F-35 in eight important ways

    'The End of History': 25 Years On | The Diplomat

    Maybe because the F-35 is intended to be a bomb truck/attack aircraft and not an Air superiority Fighter.
    f-22 vs J-20 would be a better comparison
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    Re: J-20 Mighty Dragon stealth fighter

    J-20 with the canards?
    J-31 vs F-22 not a better comparison?

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    Re: J-20 Mighty Dragon stealth fighter

    China's Super Weapon: Beware the J-20 and J-31 Stealth Fighters

    Ryan Henseler
    August 1, 2015


    Throughout its history, the People’s Liberation Army Air Force (PLAAF) of the People’s Republic of China (PRC) has lagged behind the aerial programs of other world powers such as the United States. Now, the PRC has set its sights on producing indigenously designed “fifth generation” fighter jets comparable to the US F-22 Raptor and F-35 Lightning II. Many U.S. officials and pilots suspect that the Chinese have been using hacked U.S. technology to aid their indigenous development programs. The PRC is also leveraging additive manufacturing technology (better known as 3D-printing) in order to increase speed and efficiency in manufacturing aircrafts and compete with the U.S. The J-20 Black Eagle could be fully operational by 2018, and a second model, the J-31 Gyrfalcon, by 2020. If true, China’s new generation of fighters could have a substantial impact on its ability to either defend what it considers to be sovereign airspace, or to mount an aerial offensive in a wartime scenario, particularly against Taiwan (ROC).

    Recent Advances in the PLAAF


    Between 1990 and 1992 the PRC purchased 24 Su-27 Flankers from Russia and slightly modified the design to become the J-11 Flanker B+. In response, the U.S. sold 150 F-16 Fighting Falcons to Taiwan. The acquisition of fourth generation Su-27s allowed China’s Air Force to enter modernity, and they have become progressively more capable ever since. In 2010, half of the PLAAF fleet still consisted of jets modeled after 1950s and 1960s Soviet MiG-19 Farmers and MiG-21 Fishbeds, but China’s ability to project air power has increased significantly within the past 5 years. Recently, the PRC and Russia have nearly completed a deal to transfer 24 Russian Su-35 Super Flankers, a potent “generation 4++” fighter, to the Chinese, in addition to China’s scheduled integration of fifth generation technology.


    Currently the PLAAF relies on the J-11 as its primary fighter. However, this model is largely unproven. This aircraft is perhaps most recognized as the fighter variant involved in an August 2014 incident in which a single J-11 intercepted a USN P-8A Poseidon surveillance aircraft 135 miles east of Hainan Island. Twice the J-11 came within 50 yards of the U.S. aircraft. The aggressive maneuvering by the Chinese pilot was an example of the PLAAF making it clear that U.S. surveillance is not appreciated within the airspace over its exclusive economic zone (EEZ).

    Fifth Generation Capabilities

    Since 2008 the PRC has worked to design and manufacture fifth generation concepts, both for its own use and to sell on a global scale. Two companies in China have worked on designs: the Chengdu Aircraft Industry Group (J-20) and the Shenyang Aircraft Corporation (J-31). Both are subsidiaries of the state-owned Aviation Industry Corporation of China (AVIC). It is likely that the J-20 and J-31 will complement one another when integrated into the PLAAF’s arsenal. The J-20 is closer to becoming operational, with an inaugural test flight in 2011; it is expected to reach initial operating capability (IOC) by 2018. Because both jets are still in prototype stage, their exact capabilities are not certain. However, it is speculated that the J-20 will provide a long-range strike system capable of reaching anywhere in the Western Pacific region, and incorporate a stealth design; the first of its kind in the PRC. In a conflict, the J-20 would likely be deployed in air-to-air combat with the mission of limiting the enemy’s radar coverage and strike range. The J-31 could be a potent complement to the J-20, similar to the planned U.S. partnership of the F-22 and F-35. While the J-20 is expected to possess superior dogfighting abilities, the J-31 will be “the perfect fighter for the PLA to carry out anti-access area-denial (A2AD) strategies in the Western Pacific”. The J-20 is slightly faster, with a maximum speed of Mach 2.5 compared to Mach 2 for the J-31. Both sport a combat radius of approximately 2000km (1242 miles).

    U.S. officials believe that the J-31 will immediately match or exceed the capabilities of U.S. fourth generation fighters such as the F-15 Strike Eagle and F/A-18 Super Hornet, and could possibly even compete with the F-22 or F-35. But this would largely depend on several factors including the quality of Chinese pilots, the quantity of fighters produced, and the reliability of radar and other equipment on board. In late 2014, AVIC President Lin Zhouming made an even bolder prediction, saying, “When [the J-31] takes to the sky, it could definitely take down the F-35. It's a certainty.” Even if neither of the Chinese fighter jets is entirely up to par with U.S. fifth-gens, they still could drastically change the dynamic of both a conflict with the U.S. or a scenario such as an invasion of Taiwan.
    Implications
    If the PRC decided to launch an attack across the Taiwan Strait, a contingency that it practices every year, air superiority would be essential for three reasons: the relatively small amount of airspace available over Taiwan; the ROC Air Force’s (ROCAF) ability to saturate its airspace with its own fighters, and the ROC's extensive surface-to-air missile defense system. If the PLAAF is unable to prevent or significantly limit attacks against its naval vessels when crossing the Strait, the mission would almost certainly fail. Ultimately, the PRC’s accumulation of cutting-edge fighter technology could provide the critical air advantage over the ROCAF to carry out a successful invasion, and should be cause for concern at the strategic, operational, and tactical levels of war for the U.S.

    http://www.nationalinterest.org/blog/the-buzz

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