在近两千平方米的展馆中，AI、大数据与互动体验深度融合。观众可"穿上宇航服"走进中国天宫空间站，感受航天员的工作环境，直观了解我国航空航天事 业最前沿的成就。无论是大朋友还是小朋友，都能在这场科技与浪漫交织的体验中，感受星辰大海的魅力。 F ((((((( 000 First r 除了静态展示，展馆还为不同年龄段的孩子开设专属科普课程，从航模组装到航天知识小课堂，让孩子们在动手实践中理解空气动力学、火箭发射原理等复 杂科学知识。 伟末的中国航天员 桐舟五骨乘組 揭阳穴号乘组 假组 E 0 狗円十三号预报 德舟十层假组 -看假组 神舟十二号假组 相用十 神府十九号乘組 (神舟十八号撰编 ( 神舟十七号假组 和舟士衣暢網組 限组 动静 G 记者：徐漫霖 周虎国 近日，贵阳"红飘带"又添一处硬核打卡地——贵州省首家航空航天主题展馆"问苍穹"正式亮相，将遥远的星辰大海化作触手可及的科普盛宴。 走进展馆，从第一架国产飞机的诞生故事，到空间站的前沿技术，展区宛如一本立体的航空航天百科全书。观众无需死记硬背，通过火箭模型、标注清晰的 飞机部件等直观展品，就能了解载人航天的发展脉络。 记者：杨 娅 一审：郭秋含 二审：罗亚楠 ...

（来源：中国航空报） 此外，该研究鼓励人们进一步探索锯齿边缘气流调控的基本机制。了解这些改性点处的精确流动相互作用，有望为下一代翼型的设计 开辟新的途径。未来的研究项目可以基于这些发现，通过试验不同的锯齿结构，分析不同形状和尺寸如何影响整体空气动力性能。 研究团队通过大量的计算流体动力学模拟，细致地分析了改进型NACA 6412翼型周围的气流模式。其翼型边缘如同锯齿一般，扰乱了 气流的平稳流动，产生可控湍流，从而改善了高低动量流体层的混合。这种混合过程有效地减少了大型涡旋的形成，而大型涡旋通常 是传统设计中阻力增加的罪魁祸首。最终，该翼型获得了显著优化的气动性能，并可根据特定的运行条件进行定制。 在空气动力学领域的最新进展中，一项突破性研究揭示了通过创新性地使用锯齿状后缘来提升著名的NACA 6412翼型性能的奥秘。该 研究由印度学者赛义德·萨米尔领导的研究团队完成，该研究探索了这些独特的改进如何显著提高空气动力效率，并为航空领域的各种 应用带来潜在益处。 NACA 6412翼型以其可靠的性能而闻名，是测试空气动力学改进的理想基准。传统上，翼型设计的目标是优化升力并最小化阻力，这 两个关键因素决定了任何空气动 ...

Core Points - Wu Deming, a renowned expert in aerodynamics and ship fluid mechanics, passed away on January 1 at the age of 88 due to ineffective medical treatment [1] - He was a member of the third academic evaluation group of the State Council's Degree Committee and served as the former president of Harbin Engineering University [1] Group 1 - Wu Deming was born on May 14, 1938, in Jiangsu Province and graduated from the Air Dynamics Department of the People's Liberation Army Military Engineering Institute in April 1961 [3] - He dedicated his life to the education and research of national defense technology, holding various academic positions at Harbin Engineering University, including president from October 1988 to December 1997 [3] - He retired in May 2008 and enjoyed a senior official treatment [3] Group 2 - Wu Deming was actively involved in aerodynamics and fluid mechanics research, receiving the National Science Conference Award in 1978 [3] - He conducted significant research on nonlinear wave theory at the California Institute of Technology in the 1980s, leading to a major breakthrough in fluid mechanics [3] - His work on "three-dimensional nonlinear long waves generated by surface pressure disturbances" has been widely cited in international academic papers and recognized by peers [3]

Core Viewpoint - Tesla's hidden door handle design, once celebrated as innovative, is now under scrutiny from regulators and the public due to safety concerns, particularly regarding emergency access during accidents [1][5][10]. Regulatory Investigation - The National Highway Traffic Safety Administration (NHTSA) has initiated a defect investigation into the emergency door release mechanism of the 2022 Model 3, affecting approximately 180,000 vehicles [1][4]. - This investigation follows a complaint from a Tesla owner who experienced a fire and could not locate the hidden emergency door handle, leading to severe injuries [2]. - NHTSA has previously investigated the Model Y for similar issues, indicating a broader concern regarding Tesla's door handle systems [4]. Fatal Incidents - A Bloomberg investigation revealed that at least 15 individuals have died in accidents due to being unable to open Tesla doors, with over half of these fatalities occurring in the past year [1][5][6]. - Specific cases include a Model S accident where victims could not escape a burning vehicle due to malfunctioning door handles, highlighting the critical safety risks associated with this design [6][9]. Design Philosophy - Tesla's choice of hidden door handles stems from a design philosophy influenced by Elon Musk's admiration for minimalist aesthetics, aiming for a futuristic look akin to Apple's products [10][12]. - The design was intended to improve aerodynamics and reduce drag, although studies suggest the actual benefits are minimal compared to the added complexity and potential safety risks [13]. Industry Trends - Approximately 70 vehicle models in the U.S. now feature electronic door handles, with a significant adoption rate in the Chinese market as well [16]. - The trend reflects a desire for luxury and differentiation in high-end vehicles, but safety experts have raised concerns about the practicality of such designs in emergencies [17][20]. Safety Concerns - Experts criticize the hidden door handle design for its lack of intuitive operation during emergencies, with many passengers unaware of the manual release mechanisms [17][22]. - Studies indicate that vehicles with electronic door handles have a significantly lower success rate in emergency situations compared to traditional mechanical handles [18]. Tesla's Response - In light of increasing criticism and regulatory pressure, Tesla is reportedly redesigning the door handle system to integrate both electronic and mechanical release mechanisms for improved safety [20][21]. - However, the company has not publicly acknowledged any design flaws or committed to a vehicle recall, raising concerns about the effectiveness of their safety updates [21][23]. Industry Reactions - Other automakers are reconsidering the adoption of hidden door handles, with some implementing more visible emergency release mechanisms and automatic unlocking features in their vehicles [22][23]. - The ongoing scrutiny and litigation surrounding Tesla's design may prompt regulatory bodies to enforce stricter safety standards across the industry [23].

Core Viewpoint - Xiaomi has launched its new electric SUV, the YU7, during its 15th anniversary event, showcasing advanced design and technology features aimed at expanding its automotive market presence [2][53]. Design and Aesthetics - The YU7 features a unique design inspired by luxury cars, with a focus on proportions such as a 3:1 wheelbase ratio and a 1.3:1 head-to-body ratio, contributing to its aesthetic appeal [6][8]. - The vehicle is available in multiple colors, including a gem-inspired green and a futuristic titanium color, achieved through advanced painting techniques [4][10]. - The design has drawn comparisons to the Ferrari Purosangue, highlighting its distinctive proportions and luxury appeal [10][12]. Technological Innovations - The YU7 incorporates a "sky screen" projection technology that enhances the driving experience by displaying information directly in the driver's line of sight, with a peak brightness of 1200 nits [32][36]. - The vehicle features over 40 aerodynamic optimizations, resulting in a reduced drag coefficient of 0.245Cd and an extended range of 836 km for the standard version [20][48]. Performance Specifications - The YU7 is offered in three versions: a standard rear-wheel drive, a dual-motor all-wheel drive Pro version, and a Max version, with power outputs ranging from 235 kW (320 hp) to 508 kW (690 hp) [46][49]. - The vehicle is equipped with a large 96.3 kWh battery, enabling it to achieve significant ranges, making it a leader in the mid-to-large electric SUV segment [48]. Market Positioning and Future Plans - The launch of the YU7 is a strategic move for Xiaomi to solidify its brand presence in the competitive SUV market, following the success of its previous model, the SU7, which sold 28,000 units [53][55]. - Xiaomi plans to expand its product lineup with a range of vehicles, including a potential entry into the budget segment with a range-extended SUV expected by 2026 [55][57].