Trade relations and the closeness of Russia-China were disturbed at the end of 2019. At that time, Russia’s defense industry, Rostec, accused China of illegally plagiarizing many Russian weapons and military hardware technologies.
One of those accused of being stolen by China from Russia is Sukhoi jet fighter technology. China is said to buy the Sukhoi Su-27 fighter jet – a twin-engine jet fighter with supermaneuver capability – then use it as a template or model for developing its own homemade jet fighter, J-11.
Through a Chinese-style reverse engineering strategy, the Shenyang J-11 fighter jet was finally known as a perfect copy of the Su-27 and entered the ranks of competitors from the American F-14 Tomcat and F-15 Eagle. Shenyang Aerospace Corporation even began mass-producing J-11B fourth-generation air superiority fighter aircraft as an increase from the Su-27 from the mid-1990s.
The J-11B body still resembles the original Su-27, but avionics, sensors and electronic warfare systems have been developed. Then the production batch also integrated the original WS-10A turbofan engine as a replacement for Russia’s AL-31F.
The J-11D will integrate many similar improvements, including the three-dimensional thrust vectoring engine that was recently tested on the J-10. Others are radar cross sections that reduce frontal profiles, enlarged missile carrying capacity and electronic warfare systems.
The J-11D was even designed to be far more sophisticated than the Sukhoi Su-35. Chinese jets are estimated to use more composite materials for stronger and lighter airframe.
But the most striking difference between the two designs is that the J-11D will integrate electronically scanned miniature radars (AESA). For the technology, the J-11D specifically adapted it from Japanese F-2 and F-22 fighter planes.
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