10月16日,罗尔斯·罗伊斯公司应用于Advance和Ultra Fan发动机的碳钛合金复合材料风扇叶片进行了首次装机试飞,标志着该项目达到又一里程碑。在位于美国亚利桑那州图森市的罗罗747飞行试验台上,碳钛合金风扇叶片机组首次在遄达1,000“供体”发动机上装机试飞。与罗罗的第一台遄达发动机相比,Advance发动机的燃油消耗和二氧化碳排放降低至少20%,并有望于2020年投入服务。Ultra Fan发动机采用了带有可变螺距风扇系统的变速设计,所采用的技术有望于2025年 On October 16, Rawls-Royce’s first test flight of carbon-titanium composite fan blades for Advance and Ultra Fan engines marks another milestone in the project. At the Rolls-Royce 747 flight test stand in Tucson, Arizona, USA, a carbon-titanium fan-blade unit was installed for the first time on a Tundra 1,000 “donor ” engine. Compared with Rolls-Royce’s first Trent engine, Advance’s engines reduce fuel consumption and carbon dioxide emissions by at least 20% and are expected to be operational by 2020. The Ultra Fan engine uses a variable-speed design with a variable-pitch fan system and the technology is expected to be available by 2025