A great video of the China Military J-20 aircraft. The Chengdu J-20 (simplified Chinese: 歼-20; traditional Chinese: 殲-20) is a single-seat, twinjet, all-weather, stealth fifth-generation fighter aircraft developed by China's Chengdu Aerospace Corporation for the People's Liberation Army Air Force (PLAAF). The J-20 made its maiden flight on 11 January 2011, but the plane was officially revealed on China International Aviation & Aerospace Exhibition in 2016. In March 2017, Chinese media reported that the aircraft has entered initial operational capability phase with limited service within Air Force.
The J-20 descends from the J-XX program in the 1990s, J-20 is designed to become an air superiority fighter with precision strike capability. In September 2017, the J-20 officially entered military service with PLAAF, becoming the third operational fifth-generation stealth fighter aircraft in the world, and the first in Asia. It will be equipped with domestic Chinese Taihang engines.
The J-20 has a long and wide fuselage, with the chiseled nose section and a frameless canopy. Immediately behind the cockpit are low observable intakes. All-moving canard surfaces with pronounced dihedral are placed behind the intakes, followed by leading edge extensions merging into delta wing with forward-swept trailing edges. The aft section features twin, outward canted all-moving fins, short but deep ventral strakes, and conventional round engine exhausts.
One important design criterion for the J-20 describes high instability. This requires sustained pitch authority at a high angle of attack, in which a conventional tail-plane would lose effectiveness due to stalling. On the other hand, a canard can deflect opposite to the angle of attack, avoiding stall and thereby maintaining control. A canard design is also known to provide good supersonic performance, excellent supersonic and transonic turn performance, and improved short-field landing performance compared to the conventional delta wing design.
Leading edge extensions and body lift are incorporated to enhance performance in a canard layout. This combination is said by the designer to generate 1.2 times the lift of an ordinary canard delta, and 1.8 times more lift than an equivalent sized pure delta configuration. The designer claims such a combination allows the use of a smaller wing, reducing supersonic drag without compromising transonic lift-to-drag characteristics that are crucial to the aircraft's turn performance.
According to the Jamestown Foundation, the J-20 has the potential for development into a high performance stealth aircraft comparable to the F-22 Raptor, if given appropriate engines.
Avionics and cockpit
The J-20 has an electro-optical targeting system under its nose while six units of Distributed Aperture System (DAS) sensors are mounted around fuselage.
A PLAAF Tupolev Tu-204 testbed aircraft featured a J-20 nose cone. It is believed to house the Type 1475 (KLJ-5) active electronically scanned array (AESA) radar with 1856 transmit/receive modules.
Prototypes after application "2011" and production models feature revised nose section with electro-optical/infra-red targeting system similar to fifth-generation fighters, and an advanced communications suite on top of the aircraft enables it to datalink with other friendly platforms in service, such as airborne early warning drones. Six electro-optic sensors similar to EODAS can provide 360 degrees coverage for pilot with sensor fusion system combing radar signal with IR image in order to provide better situational awareness. Chinese company A-Star Science and Technology has developed the EOTS-86 electro-optical targeting system and Electro-Optical Distributed Aperture System for the J-20 and potentially other PLAAF fighters to detect and intercept stealth aircraft.
The aircraft features a glass cockpit, with two main large color liquid crystal displays (LCD) situated side-by-side, three smaller auxiliary displays, and a wide-angle holographic head-up display (HUD). A Helmet-mounted display system also presented at Zhuhai Airshow. The helmet is able to provide aiming assistance and help pilot to utilize battle management information more efficiently from other part of the airborne system.
The main weapon bay is capable of housing both short and long-range air-to-air missiles (AAM) (PL-9, PL-12C/D &PL15 – PL-21).
Two smaller lateral weapon bays behind the air inlets are intended for short-range AAMs (PL-10). These bays allow closure of the bay doors prior to firing the missile, thus enhancing stealth.
Three types of engine will be used to test the capacity of J-20 in the development stage.