Well... there is very little information about this thing. Although the actual machine has been preserved, I have not seen it in person, and there is no three-dimensional view for reference, so there may be some errors.
Note: The following information and history are found by AI to help me. Due to the long length, some places may not be translated accurately in some places.
The J-8 II ACT is an active control technology verification machine developed by China Shenyang Aircraft Industry Corporation (referred to as "Shen Fei"). This model has made important improvements on the basis of the J-8 II. The most significant feature is that a pair of duck wings are added after the inlet lip mouth on both sides. The addition of these duck wings is to meet the needs of three -axis and four -degree digital electrical control technology. This is an advanced flight control system that can improve the mobility and handling of the aircraft. ### Shoufei Success The J-8 II ACT successfully took its first flight on September 13, 1999, which marked that China took an important step in the field of active control technology. The success of the first flight is not only an affirmation of Shen Fei's technical team, but also an important milestone in China's aviation industry in technological innovation. ### Technical features - * Duck wing design *: The addition of duck wings has made the J-8 II ACT a significant change in the pneumatic layout, which improves the lift and maneuverability of the aircraft. - * Electrical Control System *: Three -axis and four -degree digital electrical control system applications make the aircraft's flight control more accurate and reliable, and at the same time reduce the pilot's operating burden. - * Active control technology *: The application of this technology helps improve the quality of the aircraft, especially the flight performance under complex weather conditions. ### meaning and influence The successful development and first flight of the J-8 II ACT not only showed China's technological progress in the aviation field, but also provided valuable experience and data for subsequent aircraft design and improvement. In addition, through the verification of this advanced technology, it has laid the foundation for China's independent development of more advanced fighters. ### retirement and display Over time and the development of technology, the J-8 II ACT completed its mission as a technical verification platform and retired. At present, this model has become an exhibit for people to visit and learn to commemorate its important position in the history of Chinese aviation. In general, the J-8 II Act was an important chapter in the history of China's aviation industry. It not only represents the achievements of China in the field of aviation technology at that time, but also provided valuable experience and revelation for the development of aviation technology in the future.