J-31

J-31
Name	J-31
Type	Stealth multirole fighter
National origin	China
Manufacturer	Shenyang Aircraft Corporation
First flight	31 October 2012
Introduction	2020s (expected)
Status	In flight testing; development
Primary user	People's Liberation Army Air Force (intended)
Number built	10+ prototypes

J-31. The J-31 is a Chinese-developed, twin-engine, mid-size fifth-generation fighter aircraft featuring stealth technology. Primarily designed by the Shenyang Aircraft Corporation, it is intended to serve as a multirole combat aircraft for the People's Liberation Army Air Force and has been marketed for export. The program represents a significant step in China's indigenous advanced aerospace capabilities, following the development of the larger Chengdu J-20.

Development and design

The development of the aircraft was led by the Shenyang Aircraft Corporation, a major subsidiary of the state-owned Aviation Industry Corporation of China. Its design incorporates lessons from various international programs, including the American Lockheed Martin F-35 Lightning II and Lockheed Martin F-22 Raptor, though it remains a distinct indigenous product. Key design features include canted vertical stabilizers, a diverterless supersonic inlet, and an internal weapons bay to maintain a low radar cross-section. The program was first publicly revealed in 2011 through online imagery, with the maiden flight of the first prototype occurring on 31 October 2012. Power is provided by a pair of Klimov RD-93 turbofan engines, derived from the Mikoyan MiG-29's powerplant, though future variants are expected to use more advanced domestic engines like the WS-13 or WS-19. The People's Liberation Army Naval Air Force has shown interest in a carrier-based variant, potentially for use aboard the Fujian and future Chinese aircraft carriers.

Operational history

The initial prototype, often referred to by observers as the "F-60" or "Falcon Hawk," began its flight test campaign in late 2012 from Shenyang's facilities. A significantly redesigned second prototype, featuring improved stealth shaping, structural changes, and new electro-optical targeting systems, debuted in late 2016. This aircraft has been a frequent participant in major Chinese aviation exhibitions, including the Zhuhai Airshow, where it has performed flight demonstrations. While not yet in operational service, the fighter has undergone extensive weapons separation tests and avionics evaluations. Its development timeline suggests it is being prepared for future induction into the People's Liberation Army Air Force, potentially to complement the high-end Chengdu J-20 in a high-low mix strategy, similar to the United States Air Force's use of the F-22 Raptor and F-35.

Specifications (J-31)

* **Crew:** 1 * **Length:** Approximately 17.3 m (56 ft 9 in) * **Wingspan:** Approximately 11.5 m (37 ft 9 in) * **Height:** Approximately 4.8 m (15 ft 9 in) * **Empty weight:** ~12,500 kg (27,557 lb) * **Max takeoff weight:** ~28,000 kg (61,729 lb) * **Powerplant:** 2 × Klimov RD-93 or WS-13 afterburning turbofans * **Maximum speed:** Mach 1.8 * **Combat range:** 1,200 km (650 nmi) on internal fuel * **Service ceiling:** 16,000 m (52,000 ft) * **Armament:** Internal weapons bay for air-to-air missiles like the PL-12 and PL-15, and air-to-surface weapons; hardpoints for external stores in non-stealth configurations * **Avionics:** Active electronically scanned array (AESA) radar, infrared search and track (IRST), distributed aperture system (DAS)

Variants

* **Prototype 1.0:** The initial flying prototype, first flown in 2012. * **Prototype 2.0 (FC-31):** A substantially redesigned airframe with improved stealth contours, first flown in 2016. This version has been marketed for export under the designation **FC-31 Gyrfalcon**. * **Carrier-based Variant:** A proposed version with strengthened landing gear, a tailhook, and likely foldable wings for operation from Chinese aircraft carriers. It was showcased in model form at exhibitions. * **Future Production Model:** An anticipated definitive version for the People's Liberation Army, potentially featuring more powerful domestic WS-19 engines and full operational avionics.

Operators

* **China**: Expected to be operated by the People's Liberation Army Air Force and potentially the People's Liberation Army Naval Air Force upon entry into service. No units are currently operational.

See also

* Chengdu J-20 * Sukhoi Su-57 * Lockheed Martin F-35 Lightning II * Stealth aircraft * Fifth-generation fighter * Aviation Industry Corporation of China

Category:Aircraft first flown in 2012 Category:Stealth aircraft Category:Shenyang aircraft