Dongan Power’s first dual-rotor supercharged engine successfully ignited, filling the domestic technology gap

China News Service, Harbin, June 17 (Liu Xiju, Wang Nina, Jiang Wenbin) On the morning of the 17th, Dongan Power's first dual-rotor supercharged engine R10TE was successfully ignited in Harbin, filling China's technical gap in the field of high-power dual-rotor engines.

The scene of the lighting ceremony. Photo by Sun Mingyue

At 8:59 that day, at the test and trial production center of Dongan Power Advanced Power System Research Institute, Zhao Xingtian, deputy general manager and director of the research institute, pressed the start button, and the R10TE engine started smoothly. Representatives from Xpeng Huitian, Changan Flying Car, AVL Company, Wuhan Ryden, China Aviation Technology Research Institute and other institutions jointly witnessed the event.

This engine is a brand-new product created by Dongan Power and AVL Company on the basis of the R05E single-rotor engine. It adopts a 1.0L dual-rotor plus supercharged architecture, which greatly improves the power-to-weight ratio and can meet the high-power power requirements of low-altitude aircraft. It is expected to be mass-produced in 2028.

The technical solution takes into account inheritance and innovation. While using mature technologies, it also innovatively adopts configurations such as a high compression ratio of 11.5, a dual-flow supercharger, an advanced composite material sealing system, and a lightweight aluminum alloy shell. The power-to-weight ratio of this model reaches over 1.8, and the output power exceeds 120kW at the rated speed of 5500rpm. At present, more than 70 patents related to rotary engines have been applied for, including more than 30 invention patents.

For special aviation flight scenarios, the engine adopts structural designs such as dry oil pan and multi-connected oil pump to ensure stable power output under complex working conditions. Cooperate with Wuhan Lingdian to develop a special electronic control system to ensure that the entire machine is independently controllable. In the future, it will work with the China Institute of Aviation Technology to promote airworthiness certification.

The successful ignition marks the realization of "flying together on both wings" of Dongan Power's low-altitude power business. At present, the displacement of rotary engine products covers 0.5L to 1.0L, and the power range is 50kW to 120kW. At the beginning of this month, the second-generation aviation-specific hybrid transmission AHT22 prototype also completed the ignition test. In the future, we will improve the research and development of full-spectrum products and provide integrated low-altitude hybrid powertrain solutions.

At this stage, the rotary engine platform has had in-depth exchanges with Xiaopeng Huitian, Changan Flying Vehicle, DJI, Hafei and other companies, and market development is steadily advancing. After one year of research, the Dongan Power technical team achieved a leap forward from scratch to China's independent dual-rotor supercharged engine, serving the country's low-altitude economic strategy with core technology breakthroughs. (over)