China's first approved composite aircraft propeller is born
China's first approved composite aircraft propeller is born
The JL-4A/1 propeller independently developed by Aviation Industry Huiyang obtained the type approval certificate issued by the Civil Aviation Administration of China in early September, becoming the first domestic composite propeller to obtain type approval, filling the gap in the development of civil composite propellers and marking a major milestone in the history of propeller development in China.
The JL-4A/1 propeller is a composite propeller for the AG600 amphibious aircraft. As the chief engineer and chief contractor of the propeller system, Huiyang has undertaken the development of the propeller and successfully completed the first flight of the AG600 aircraft on land, water and sea with the host.
The propeller adopts light alloy shell and composite blade to improve the propeller power performance; it adopts advanced propeller airfoil and swept-back aerodynamic layout to meet the propeller performance requirements of high efficiency and low noise; it has the functions of automatic pitch change, pitch fixing, smooth pitch return, lightning protection, ice protection and other functions and blade interchangeability, which has the characteristics of good environmental adaptability, high safety and reliability, and strong comprehensive protection capability.
In strict accordance with the requirements of civil aviation airworthiness regulations and based on the characteristics of China's aviation manufacturing industry, Aviation Industry Huiyang has established the airworthiness verification capability of composite propellers and the design assurance system to meet the airworthiness requirements. Starting from the requirements of the regulations, the company has carried out independent product design, formulated material-level, component-level and product-level testing and other verification programs, and completed centrifugal load, fatigue, bird collision, lightning strike, bench test and other compliance verification tests. It has achieved a number of innovative results, obtained a number of invention patents, and won the only gold medal in the aerospace category of the Third China Civilian-Military Technology Innovation and Application Competition. Through the project research and development, Aviation Industry Huiyang has cultivated a high quality propeller R&D team.
The successful development of JL-4A/1 propeller is a major achievement of aviation industry's insistence on independent innovation in the propeller industry, which lays the foundation for the development of advanced civil aviation propellers in China and provides strong support for the subsequent development of AG600 aircraft and its entry into the market.