China has taken a quiet but strategically important step in next-generation aviation. Harbin Dongan Auto Engine, a company within the Changan Automobile Group, successfully launched the R05E prototype on December 19—the country’s first high-power rotary engine specifically designed for low-altitude aircraft.
The R05E is a single-rotor engine with an independent dual-circuit ignition system, a lightweight eccentric shaft, a balancing system, and an integrated water-cooling jacket. At a nominal 6,500 rpm, it delivers 53 kW, combining compact dimensions with low noise, vibration, and harshness—critical parameters for eVTOLs, light aircraft, and prospective piloted low-altitude aviation.
The engineering focus is on energy efficiency and weight: the housing is made of cast aluminum, while key components are coated with an anti-friction NDC (nano-diamond composite) coating. According to the developers, the engine can be easily adapted to various aviation platforms, including medium and large-class aircraft.
Serial production is planned for 2027. Against the backdrop of global interest in low-altitude aviation, air mobility, and unmanned systems, the R05E looks less like an experiment and more like an element of China’s long-term industrial strategy—compact, quiet, and designed for scale.
Source: Xpeng
