Theory of dual synthetic jets and its empowerment of advancements in aeronautical technology

Active flow control technology is a frontier and transformative technology in the aviation field of the 21st century. Dual Synthetic Jet (DSJ), a new type of active flow control technology invented in China offering high energy efficiency, strong environmental adaptability, and wide control range, is expected to fully assist in the performance improvement of current aircraft and the revolutionary development of next-generation aircraft. This paper systematically summarizes the theory, technical characteristics, and the latest research progress of DSJ in empowering aviation technology. Through twenty-year research, the DSJ theory system based on the “enhancement” effect, “vector” effect, and “augmentation/self-support” effect existing between double synthetic jets with different phases has been formed. And the DSJ technology system with characteristics of energy efficiency doubling, full electric vectoring, and cross-medium working ability has been developed. DSJ has shown great application prospects in aspects of aircraft aerodynamics, power, flight control, flight safety, thermal control and cross-medium flight.