On June 5, the AECC Aero-Engine Control System Institute (hereinafter referred to as "AECC ACS") held the delivery ceremony for the AEE25 aviation motor in Wuxi. Huang Yongwei, Founder and CEO of Xiangshi Technology; Tang Xiaoming, Co-founder and COO; Yuan Chunfei, Director and Deputy Party Secretary of AECC ACS; Liu Guoping, Deputy Director; and representatives from both project teams attended the event.
The delivered AEE25 is China's first "six-in-one" fully integrated aviation motor. It has set a new record for the highest torque density among domestic 200kW-class aero-electric engines, marking a significant breakthrough in China's key aviation motor technologies and bringing its performance to an internationally advanced level. The realization of this achievement not only effectively overcomes relevant technical bottlenecks but also further validates the R&D innovation and engineering capabilities of both Xiangshi Technology and AECC ACS. This represents significant progress on the path toward achieving "independent and controllable, high-end development" in the core supply chain of the low-altitude economy.
The E20 eVTOL is a five-seat manned tilt-rotor electric vertical takeoff and landing (eVTOL) aircraft independently developed by Xiangshi Technology. It boasts technical advantages such as vertical takeoff and landing, high-speed cruising, high safety and reliability, low noise, and low operating costs. As the power core of the eVTOL, the motor bears the critical task of efficiently converting battery electrical energy into propeller lift. Unlike industrial or automotive motors, aviation-grade motors face three stringent tests:
- High torque and power density: Delivering sufficient power within limited weight and volume constraints.
- Safety redundancy: Maintaining the aircraft's attitude and lift under single-failure conditions to ensure safe landing.
- Environmental adaptability: Operating reliably under complex conditions such as alternating high and low temperatures, heat and humidity, low air pressure, salt spray, and vibration shocks.
Tailor-made for the E20 eVTOL, the AEE25 motor achieves breakthroughs in two core indicators:
First, it pioneers the domestic "six-in-one" fully integrated architecture. The AEE25 highly integrates six major functional units: the main motor, main electronic control unit (ECU), cooling system motor and controller, and pitch actuator and controller. This highly integrated design optimizes the powertrain architecture within strict spatial and weight constraints. Such integration not only reduces volume and weight but also significantly enhances system reliability, laying a solid foundation for aviation safety at the architectural level.
Second, it sets a record for the highest torque density in its power class. By setting this new domestic record for 200kW-class aviation motors, the AEE25 demonstrates another major breakthrough in key technologies, reaching internationally advanced performance levels. Currently, this motor model has entered the airworthiness certification phase and has completed the SOI#1 software and hardware airworthiness review, making it the fastest-progressing motor in China's eVTOL sector regarding airworthiness certification.
Huang Yongwei, Founder and CEO of Xiangshi Technology, stated: "Our cooperation with AECC ACS has not only overcome the technical bottlenecks of aero-electric engines but also explored a highly efficient collaborative R&D path, which will effectively boost the independent and large-scale development of China's eVTOL industry."
Liu Guoping, Deputy Director of AECC ACS, remarked: "We will continue to deepen research on key technologies and engineering verification. Addressing the needs of the low-altitude economy, electric-propulsion aircraft, and new power systems, we will provide more efficient, reliable, and lightweight aero-electric engines for emerging aircraft like eVTOLs."
The successful delivery of the AEE25 motor marks an important milestone in the collaborative innovation between Xiangshi Technology and AECC ACS, as well as critical progress in building the core powertrain capabilities for the E20 eVTOL. Looking ahead, both parties will continue joint research efforts, advance the engineering application and iterative optimization of related technologies, and jointly promote the high-quality development of China's low-altitude economy and new aviation equipment.
About AECC Aero-Engine Control System Institute:
Affiliated with the Aero Engine Corporation of China (AECC), AECC ACS is a bureau-level public institution founded in 1974 and located in Wuxi, by the scenic Taihu Lake. Following professional adjustments in 1991, it became the sole control systems research institute in China's aero-engine industry. It houses the Aviation Key Laboratory of Science and Technology on Aero-Engine Control Systems, the National Postdoctoral Research Station for Aerospace Propulsion Theory and Engineering, and the Jiangsu Provincial Engineering Technology Research Center for Aero-Engine Sensing Systems. Its primary businesses include the R&D, manufacturing, integration, delivery, and maintenance support of control systems and electronic controller software for aero-engines and gas turbines, as well as the R&D, production, and maintenance of flexible couplings.
