基于专利分析的美国第四代航空发动机技术创新研究

摘要

本文以德温特专利数据库中收录的1990—2016年在美国申请的专利数据为基础,分析了美国第四代航空发动机的技术创新情况,分别从技术发展态势、参与机构、研究热点和研究重点等方面进行了讨论.结果表明,美国第四代航空发动机的发展经历了从军用到民用、从提高性能到节约成本的过程,研究主要围绕航空发动机叶片结构的改进展开,航空巨头企业是主要的参与主体和技术创新者.%This paper analyzes the technology innovation of the American fourth-generation aeroengine, on the basis of patent data which are applied in America and collected by Derwent Innovation Index (DII) between 1990 and 2016, and the technology development trend, participating enterprises and research focus are also discussed. Results shows that the American fourth generation aeroengine has evolved from military to civil, the technology has developed from performance improving to cost saving. The research mainly focuses on the improvement of aeroengine blade structure, and large aviation enterprises are major technology innovators.