- Yes
- No
In the 1990s, Chengdu Aircraft Manufacturing Company (CAMC) successfully developed the J-7FS technology demonstrator. The J-7FS was developed in August 1996 by Chengdu Aircraft Corporation, Liyang Engine Company, an aeronautical accessory research institute, an aeronautical composite material special structure research institute, Chengdu Qingjiang Instrumentation Factory, Shaanxi Lingyun Electric Apparatus Company, Northwest Optical Instrumentation Factory, Shaanxi Thousand Mountain Electronic Instrumentation Factory and other 9 units, which raised tens of millions of dollars to undertake the risk of developing the pre-professional technological demonstration aircraft. the chief engineer of J-7FS was Lu Yingyu. the first aircraft was converted from the 139 J-7II aircraft used for training. The first aircraft was converted from the red 139 J-7II used for training. zIn February 1997, the overall technology program was proposed, and in June 1997, the drawings were released.
The J-7FS test flights were completed in 2001. By early 2003, all test flights of the J-7FS were completed. After 22 months’ joint efforts of researchers, the 8 military enterprises have completed 50,000 man-hours, 2,100 new special parts, 432 new special fixtures, 27 new research and improvement products, and 34 ground tests for the J-7FS type aircraft. Two prototypes of J-7FS were produced, one for flight test and the other for static test.
The biggest difference between the J-7FS and the original J-7 series fighters is that the original nose intake was changed and evolved into a mandibular intake, which is similar to that similar to the American A-7 Corsair attack aircraft.
His improvement firstly increased the volume of the nose to facilitate the installation of a high-power airborne radar, and secondly improved the air intake efficiency when flying at high angles, thus enhancing the attitude maneuverability of the aircraft. The original J-7 series fighters can only install low-power range-finding radar due to the limited space of the nose intake cone. The J-7FS prototype is equipped with Israel’s EL/M2032 radar, and can also use domestic medium-range air-to-air missile radar guidance (no plan, for the proposal of the researchers, at the time of the domestic radar miniaturization of the domestic did not solve the problem) The design can also be equipped with jaw intake system, without major changes to the fuselage structure, only the front of the cockpit and the engine, the flight bus can be modified. This makes the improved design of the J-7FS suitable for improving earlier versions of the J-7 and MiG-21.
In addition, in order to further improve the power performance, the J-7FS was equipped with the WP-13F II engine. This engine is improved by Liyang Engine Company on the basis of the WP-13 engine installed on the original J-8 II fighter. The thrust was further increased to 7-8 kilonewtons (about 8000kg), and the maneuverability of the J-7FS was greatly improved compared with the original J-7 series fighters. The maximum climb rate was increased from 139 m/s to 199.8 m/s; the acceleration time from Mach 0.6 to Mach 1 at an altitude of 5,000 meters was reduced from 35 to 28.7 seconds; and the takeoff and roll distance was shortened by 200 meters.
The j-7FS did not have no state or government investment, nor was it tasked by the competent authorities. It was developed entirely by Chengfei in cooperation with eight military industrial enterprises, with tens of millions of yuan of self-financing. This is the first military program in which China’s military industrial enterprises invested, jointly developed and risked themselves.
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（The green J-7FS is considered to be the improved FS, while the red and white painted J-7FS prototype)
Airframe data:
Wing span length ：7.154m
height： 14.89m,
wing area： 4.11m,
empty weight：5400KG,
maximum takeoff weight： 8200KG, maximum speed： 2250km/h,
maximum range： 2500KM
maximum climb rate： 11000m/min, upper limit of flight altitude： 18800m, personnel： 1
Engine thrust:
approximately 7000-8000 daN
Radar Performance:
EL/M2032 Pulse Doppler Fire Control Radar, with a detection range of 60 kilometers, capable of simultaneously tracking 8 airborne targets and possessing mid-range interception capability
Weapon mounting:
PL5B/PL11 (prototype green J7FS transplanted J7E fire control system and some designs, this mounting is estimated equipment)
little knowledge
*Due to modifications to the intake duct, the J-7FS is not equipped with an aircraft gun
