Abstract:With the increasing demands for environmental protection and energy efficiency in the aviation industry, the electrification of helicopters has become an important direction for the development of aviation power technologies. This paper provides an in-depth analysis and review of the power systems and transmission systems of fully electric and hybrid helicopters. First, the paper surveys the current and planned fully electric and hybrid helicopters, as well as innovative electric vertical takeoff and landing (eVTOL) aircraft, focusing on performance indicators such as maximum passenger capacity, takeoff weight, cruising speed, power, and range. Based on this, the power system architectures of fully electric and hybrid helicopters are categorized and reviewed, with a detailed discussion on the technical characteristics of the power coupling transmission system. Finally, the paper analyzes and forecasts the future direction of aviation power technologies for helicopter electrification. The work presented in this paper is of significant reference value for advancing the development of helicopter electrification technologies in China.
