近十年来，美国官员打着"国家安全"旗号，一直努力禁止政府机构及无人机爱好者使用中国无人机。现 在，华盛顿的"奸计"终于得逞。 【文/观察者网 齐倩】 当地时间12月22日，美国政府宣布，全面禁止外国无人机在美销售。 "此举引发了美国多数飞手（无人机操控员）的愤怒，"美国《华尔街日报》22日称，美国有近50万名持 证飞手。现在他们正着急囤积大疆无人机及部件，并向国会和白宫抗议，指出中国无人机"无可替代"。 据报道，在美国商业、地方政府及爱好者无人机市场，大疆无人机占比高达70%至90%。 "我彻头彻尾是美国制造，我开雪佛兰皮卡，"埃里克·埃伯特是美国印第安纳州戴尔市一家建筑工地监 控公司的老板，历来支持美国制造，但也承认"美国无人机根本竞争不过"中国无人机。 埃伯特的公司有七名无人机操控员，监控数千英亩太阳能和风力涡轮安装项目。 他现在忧虑，美国政府最新禁令将破坏他和员工的生计。他说，在"清楚2026年意味着什么"之后，他的 公司迅速囤积了30多架中国无人机及设备配件。 报道提及，五角大楼计划将投入11亿美元支持美国无人机制造商，到2027年采购数十万套本土无人机系 统。该计划源于美国总统特朗普的行政命令，呼吁 ...

Core Insights - The updated design of the TriFan 600's engine air inlet and exhaust significantly enhances air intake and exhaust flow, optimizing performance for both vertical and conventional flight modes [1][2] - The design improvements are a result of advanced digital mock-up (DMU) and computational fluid dynamics (CFD) analysis, demonstrating the company's commitment to innovation and customer focus [2] - XTI Aerospace is developing the TriFan 600, a fixed-wing business aircraft with vertical takeoff and landing (VTOL) capabilities, aiming to create a new category of aircraft known as vertical lift crossover airplane (VLCA) [3] Engineering Milestones - The company has outlined six core product and engineering milestones for Q1, including: - Downwash/outwash study to analyze airflows during vertical takeoff and landing [4] - Type certification application to the FAA for the TriFan 600 [4] - Optimization of engine air inlets and exhaust design for enhanced propulsion performance [4] - Fuel system design to increase fuel capacity and reduce unusable fuel [4] - Development of a flight deck human factors mockup for ergonomic evaluation [4] - Update of the Global Finite Element Model (GFEM) for structural evaluation [4]