Chengdu J-10


The Chengdu J-10, is a single-engine, lightweight multirole fighter aircraft capable of all-weather operation, configured with a delta wing and canard design, with fly-by-wire flight controls, and produced by the Chengdu Aircraft Corporation for the People's Liberation Army Air Force.

Development history

The program was authorized by Deng Xiaoping in the 1980s who allocated ¥ 0.5 billion to develop an indigenous aircraft. Work on Project #10 started several years later in January 1988, as a response to the Mikoyan MiG-29 and Sukhoi Su-27 then being introduced by the USSR, and F-15, F-16 already in service in the United States. Development was delegated to the 611 Institute, also known as the Chengdu Aircraft Design Institute and Song Wencong was nominated as the chief designer, as he had previously been the chief designer of the J-7III. The aircraft was initially designed as a specialized fighter, but later became a multirole aircraft capable of both air-to-air combat and ground attack missions.
In 2006, the Russian Siberian Aeronautical Research Institute confirmed its participation in the J-10 program; SibNIA claimed to have only observed and instructed as "scientific guides", while its engineers also believed the J-10 was "more or less a version" of the IAI Lavi, incorporating "a melting pot of foreign technology and acquired design methods".
The J-10 was officially unveiled by the Chinese government in January 2007, when photographs were published by Xinhua News Agency. The aircraft's existence was known long before the announcement, although concrete details remained scarce due to secrecy. Rumors of crashes during flight testing were actually mishaps related to the AL-31 engine.
The first prototype "J-10 01" was rolled out in November 1997 and first flown on 23 March 1998 in a twenty-minute flight.
AVIC plans to market an upgraded J-10 for export, most likely the J-10B, once development is complete. Several countries have shown interest.
In 2015, China Military Online published an analysis advocating Argentina's adoption of the J-10, claiming that while the operational range of current versions could not yet allow it to reach the Falkland Islands, the aircraft, particularly its radar, were superior to the Typhoon and that tanker aircraft could place the islands within range. China has been promoting the J-10 to the Argentine republic and during a February 2015 visit to China by President Kirchner established a joint fighter aircraft working group.

Design

J-10 was designed and developed by the Chengdu Aircraft Design Institute, a subsidiary of Chengdu Aircraft Corporation.

Airframe

The airframe is constructed from metal alloys and composite materials for high strength and low weight, the airframe's aerodynamic layout adopts a "tail-less canard delta" wing configuration. A large delta wing is mid-mounted towards the rear of the fuselage, while a pair of canards are mounted higher up and towards the front of the fuselage, behind and below the cockpit. This configuration provides very high agility, especially at low speeds, and also reduces stall speed, allowing for a lower airspeed during instrument approaches. A large vertical tail is present on top of the fuselage and small ventral fins underneath the fuselage provide further stability.
A rectangular air intake ramp and a Splitter plate are located underneath the fuselage, providing the air supply to the engine. Newer variants use a diverterless intake that does not require a splitter plate, and may reduce radar cross signature. Also under the fuselage and wings are 11 hardpoints, used for carrying various types of weaponry and drop-tanks containing extra fuel.
The retractable undercarriage comprises a steerable pair of nose-wheels underneath the air intake and two main gear wheels towards the rear of the fuselage.
The cockpit is covered by a two-piece bubble canopy providing 360 degrees of visual coverage for the pilot. The canopy lifts upwards to permit cockpit entry and exit. The Controls take the form of a conventional centre stick and a throttle stick located to the left of the pilot. These also incorporate "hands on throttle and stick" controls. A zero-zero ejection seat is provided for the pilot, permitting safe ejection in an emergency even at zero altitude and zero speed.
Due to the J-10's aerodynamically unstable design, a digital quadruplex-redundant fly-by-wire flight control system aids the pilot in flying the aircraft. The FCS typically monitors pilot control inputs, preventing the pilot from accidentally exiting the flight envelope from applying too much control input during high performance flight situations. This is critical in canard wing aircraft, as they are capable of turning in a much tighter radius than conventional aircraft. The massive control surfaces are capable of moving so far that they can completely destroy the aircraft in flight at high airspeeds if not kept in check by the FCS.

Avionics

The cockpit has three liquid crystal Multi-function displays along with a Chinese developed holographic head-up display, all of which are fully compatible with a domestic Chinese advanced helmet mounted sight, claimed by Chinese to be superior to the HMS on the Sukhoi Su-27 sold to China.

Radar

According to Chengdu Aircraft Industry Corporation officials the J-10 uses a multi-mode fire-control radar designed in China. The radar has a mechanically scanned planar array antenna and is capable of tracking 10 targets. Of the 10 targets tracked, 2 can be engaged simultaneously with semi-active radar homing missiles or 4 can be engaged with active radar homing missiles.
For J-10B, the nose cone is modified to accommodate an active phased array airborne radar radar. The general designer of AESA for J-10B is Mr. Zhang Kunhui, the head of 607 Research Institute in Neijiang, Sichuan. Mr. Zhang Kunhui became the deputy head of 607th Research Institute in 1997, and four years later in 2001, he became the head of the institute, when the AESA program for J-10B started. The primary contractor of this AESA is the Radar and Electronic Equipment Research Academy of Aviation Industry Corporation of China located in Sichuan, formed in March 2004 by combining the 607th Research Institute and 171st Factory together with Mr. Zhang Kunhui was named as the head of the research academy. According to Chinese governmental media, the AESA for J-10B took 8 years to develop, finally completed in 2008, and Chinese fighter radars hence achieved a quantum leap in that it went from mechanically scanned planar slotted array directly into AESA, skipping the passive phased array PESA radar. Many suspected the radar is a PESA, but during its brief debuts in the 7th China International Defense Electronics Exhibition in May 2010 and the 6th International Conference on Radar held in Beijing in Sept 2011, Chinese official sources have claimed it is an AESA.

Propulsion

The J-10A is powered by a single Russian Lyulka-Saturn AL-31FN turbofan engine giving a maximum static thrust of 12,500 kgf. The AL-31FN is based on the AL-31F which was designed for a twin engine aircraft such as the Su-27, to fit the smaller J-10 the engine parts have been moved and re-designed to fit the smaller engine bay in the J-10.
The J-10 was intended to be powered by the Chinese WS-10 Taihang turbofan, but development difficulties forced the J-10A to use a Russian engine instead. Future J-10 will likely be equipped with an improved WS-10 type engine designed specifically for it, as the Chinese aeroengine industry matures and political/military pressure to indigenize increases.
In April 2014, China have entered into a contract with NPO Saturn to purchase the upgraded AL-31FN Series 3 that provides 13,700 kgf thrust and a 2,250-hour service life for future deliveries. Prior, the AL-31FN Series 3 had accumulated 750 hours of test operation on the J-10 aircraft in a test programme.
In Jan 2018, an image has emerged on Chinese online forums showing a Chengdu Aircraft Industries Company J-10 multirole fighter aircraft powered by what may be an engine featuring a thrust vector control nozzle. Newer aircraft also use a diverterless intake, a design intended to reduce complexity and often reduces radar cross signature as well.
In November 2018, a J-10B powered by WS-10 thrust vector control publicly displayed at the Zhuhai AirShow and made a Pugachev's Cobra action.

Weaponry and external loads

The aircraft's internal armament consists of a Gryazev-Shipunov GSh-23 twin-barrel cannon, located underneath the port side of the intake. Other weaponry and equipment is mounted externally on 11 hardpoints, to which 6,000 kg of either missiles and bombs, drop-tanks containing fuel, or other equipment such as avionics pods can be attached.
Air-to-air missiles deployed may include short-range air-to-air missiles such as the PL-8 and PL-9, medium-range radar-guided air-to-air missiles such as the PL-11 and PL-12, unguided and precision guided munitions such as laser-guided bombs, anti-ship missiles such as the YJ-9K and anti-radiation missiles such as the PJ-9.

Operational history

China

The first aircraft were delivered to the 13th Test Regiment on 23 February 2003. The aircraft was declared 'operational' in December of the same year, after 18 years in development. The first operational regiment was the 131st Regiment of the 44th Division.
The J-10C entered combat service in April 2018.

Pakistan

In February 2006, then-President of Pakistan Pervez Musharraf, toured the J-10 and JF-17 production facilities on a trip to China during which the Pakistan Air Force was offered the J-10, and the purchase of 36 FC-20s, a Pakistan-specific J-10B variant, was approved in April 2006. In November 2009, Pakistan signed a deal with China to buy 36 J-10B fighters in a deal worth around $1.4 billion.
In July 2011, Daily Jang reported that China will give a squadron of the advanced J-10B fighter aircraft to Pakistan. According to the report, "the offer was made by senior Chinese military leaders to visiting Pakistan Army's Chief of General Staff, Lt Gen Waheed Arshad". In March 2012, talks were held between the two countries to discuss the delivery of latest J-10B fighter jets to Pakistan. However, this has been cancelled as of 2016. Pakistan Air Force is focussing on JF-17 Block 3 and in future it is looking to procure the export version of J-31, the FC-31 stealth fighter. 40 jets are to be procured initially.

Controversy

The J-10 is externally similar to the IAI Lavi. In 2008, aviation publishing house Jane's alleged that China's development of the Chengdu J-10 had benefited from technical information from the Lavi project, citing senior Russian engineers who said they had heard this from Chinese colleagues. In 2007, the J-10's designer, Song Wencong, denied any connection with the Lavi, pointing to similarities with the Chengdu J-9, which developed in the 1960s. This was echoed by PLAAF major Zhang Weigang in a 2012 interview. There have been no public statements or formal claims along those lines; by 2000, however, openly disclosed advanced technology transfer of any origin had become anathema to the United States, which forced Israel to cancel a sale of Phalcon airborne early warning planes.

Variants

On 13 November 2016, the first J-10 female pilot, Captain Yu Xu, was killed in an aerobatics display in Hebei province while performing with the August 1st Aerobatics Team.

Specifications (J-10A)