Chinese substantially modified their locally produced flankers,
to be called J11, the latest J11 B model only shares the same
airframe to the original Su27, but every thing inside, from
powerplant, Radar, weapon system, Avionics all are indigenously
made. Look at the below image, the Chinese J11B features a
Holographic HUD, you can find same type of system in f22 as well,
and you also can compare the J11Bs c-ockpit to that of original
Su27SK in 1990s.
Below is J11B image released from Chinese media, quite a mighty
Flanker
More detailed reads on Chinese indigenous Flanker, the J11B, from
AWST:
Chinese J-11B Presages Quiet Military
Revolution
...The nationally developed systems
now in various stages of the J-11B test program potentially provide
performance improvements over the various Su-27 models now in PLAAF
service.
Air Show China, held here Oct. 31-Nov. 5, included the first
official detail about the Shenyang Tai Hang engine. This turbofan
powerplant is being developed for the Flanker, and is also
sometimes referred to as the WS-10A. A handful of J-11B airframes
are now likely being used for development testing, including at
least one J-11B engine-integration aircraft.
Beijing and Moscow first agreed on the Flanker sale in 1991, with a
license production contract signed in 1996. The Flanker has given
China its most capable fighter aircraft while also providing a
vehicle for its industry to gain knowledge of fourth-generation
fighter manufacturing. The first kit-built J-11A was completed in
1998. The J-11A still uses Russian engines, radar and
weaponry.
Design and development of the Tai Hang has been underway for nearly
two decades, says one senior Chinese aero-engine executive. He
admits the program has proved challenging: "We hit difficulties in
developing the engine."
Chinese industry executives attending the show remain reticent to
discuss the J-11B program. The executive would say only that the
Tai Hang has "similar applications to the Al-31 [the present Su-27
engine]. It's of a similar thrust and is of the same technology
generation." The J-11B program also includes the integration of
Chinese-developed planar array pulse-Doppler radar replacing the
Russian N-001 cassegrain radar, at least two versions of which are
fielded by the PLAAF. An image of a J-11B, still in its primer (see
top photo on p. 27), appears to show the aircraft fitted with a
different radome to the basic Su-27. Given the available space for
a flat-plate antenna, this would offer a performance improvement
over the N-0001.
Also associated with the J-11B is the Luoyang PL-12 active
radar-guided medium-range air-to-air missile. While the Chinese air
force already has the Russian R-77 (AA-12 Adder) in service with
the Su-27, the PL-12 offers a big performance increase over the
present export standard of the Vympel R-77. Officials from the
company were unable to discuss the PL-12 project.
The initial development test-firing program for the overall PL-12
program now appears complete, with the missile at least close to
service entry. It was integrated first on the J-8II for the
development program. Trials of the PL-12 on the Chengdu J-10 also
have been carried out.
The PL-12 does benefit from Russian technology, with the seeker and
inertial guidance system provided by Moscow. A variant of the Agat
9B-1103M radar seeker is the most likely candidate for the missile.
This seeker was intended initially for an improved version of the
R-77, but appears to have been sold to China first.
The PLAAF currently has the capability for two-target engagement
using the Su-27, R-77 combination. Successful integration of the
PL-12 on the J-11B would likely provide a genuine multitarget
capability and give the PLAAF a more capable air superiority
aircraft...
