The J-10B is a modified variant of the J-10 multirole fighter aircraft, with modifications in airframe and avionics. Chengdu Aircraft Corporation (CAC) of AVIC began to develop a follow-on variant of its J-10 fighter around 2004/05. A J-10B prototype reportedly made its maiden flight in December 2008. Photos of the aircraft began on emerge on the Chinese Internet in March 2009. Once commissioned, the J-10B is likely going to become the standard for later J-10 productions.

J-10B是J-10多任务战斗机的一个改型，修改了机身和航空电子设备。中国航空工业集团公司（AVIC）的成都飞机公司(CAC)在2004年05月左右开始继续发展它的J-10战斗机改型大约。一架J-10B原型在2008年12月根据传闻作了它的首次飞行。飞机的图片在2009年3月在中国英特网上显露。一旦编入现役，可能J-10B成为以后制造的J-10标准。

 

Rampless Inlet

 

The J-10B features a chin-mounted diffuser supersonic inlet (DSI) air inlet. The traditional rectangle-shape air inlet on the J-10 requires a large moveable inlet ramp to generate a rearward leaning oblique shock wave to aid the inlet compression process. The ramp sits at an acute angle to deflect the intake air stream from the longitudinal direction. The air inlets comprises many moving parts, which increases the aircraft’s weight and radar reflections.

 

The newly designed rampless inlet, first tested on the FC-1/JF-17 fighter design by Chengdu, employs a one-piece bump at the top of the inlet replacing the movable ramp. This eliminates all moving parts on the inlet, lightening the overall weight and reducing the aircraft’s radar signature.

 

Electro-Optic Targeting System

光电瞄准系统

 

The J-10B has been added with an electronic-optic targeting system (EOTS) commonly found on all fourth-generation Russian fighter aircraft such as Su-27 and MiG-29. Placed forward of the cockpit canopy to the right, the system comprises an infrared search and track (IRST) sensor and a laser rangefinder, which can detect enemy targets passively without requiring to turn on the fire-control radar, thus reducing the chance of the aircraft being detected. The EOTS of the J-10B is likely based on a Russian design.

 

Tailfin ECM Pod

 

The upper edge of J-10B’s tailfin is curved, in contrast to the straight-edged tailfin of the J-10. A large fairing is added to the tip of the tailfin to accommodate electronic warfare and countermeasures (EW/ECM) equipment.

J-10B尾翼上面边缘是弯曲形，与J-10的锐利直线尾翼相反。大的整流罩被加到尾翼的顶端去容纳电子战和对策(EW/ECM)装置。

 

ECM Antenna Array

 

The J-10B has four black antenna arrays attached externally to the fuselage, a larger one on either side of the cockpit and a smaller one on either side of the rear fuselage near the engine nozzle. The specific purpose of these antennas is unknown but they are thought to be for electronic countermeasures purpose.

J-10B外部有四组黑色的天线阵列附加到机身，较大的在驾驶员座舱两侧和较小的在后机身两侧靠近发动机喷嘴。这些天线的详细用途是未知的，但是他们被考虑是用于电子对策目的。