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- a Raptor-style light-grey colour scheme,
- the engines' diverterless supersonic intakes appear to have been re-designed, perhaps to improve the radar cross section characteristics.
- an additional inner canopy frame similar to the F-35
- clipped tails and canards (which now seem to be integrated much better with the forward fuselage)
- re-designed wheel bay doors
- a reduction in the size of the wing actuators
- a new frameless wide-angle holographic head-up display
- an electro optical targeting system protruding under the front fuselage
- several new dielectric panels around the front fuselage
- wider and longer sponsoons/tail stings (where the tails are mounted)
- redesigned LERX with no longer an arc but straight leading edge
- probably a redesigned rear fuselage featuring a wider and deeper “ditch” between both engines.
- tire fairings for the main landing gear are larger (but it may just be that the re-designed LERX which intersects it is less voluminous than it used to be)
- a small ventral bump of unknown function has moved from the port side of the rear fuselage to starboard.
- squared rather than round nose landing gear lights
- the small LERX infront of canard is gone.
Tai sitten poistutaan,kuten hawkeistakin. Kuomua ei ammuta irti,vaan pelkkä pleksi ammutaan rikki.Sillä muutoksella ilmeisesti on nopeutettu ulospääsemistä jos tilanne iskee päälle.
Chengdu’s J-20 stealth fighter represents the pinnacle of China’s aerospace engineering, but its existence and development have posed mysteries since the unexpected appearance of the first prototype at the end of 2010, followed in May 2012 by the debut of a second, similar aircraft. The past few months, however, have seen the first flights of a pair of significantly different J-20s, identified by the serial Nos. 2011 and 2012.
The most substantial design change in the new aircraft appears to be that the fuselage aft of the main landing gear is a bit more slender, with a deeper tunnel in the undersurface between the engines. The tailbooms that extend aft of the all-moving vertical tails are longer, and the lower fixed stabilizers are moved aft. The trailing-edge tips of the vertical tails and canards are cropped, and the leading-edge root extensions are straight rather than curved.
http://aviationweek.com/podcast/what-we-know-so-far-about-j-20Ahead of the Zhuhai air show, Aviation Week's International Defense Editor Bill Sweetman talks to Defense Managing Editor Jen DiMascio about the J-20 Chinese fighter.