北京榜样｜刘智勇：二十余载无偿献血超五万毫升

Core Viewpoint - Liu Zhiyong has dedicated over 20 years to voluntary blood donation and has made significant contributions to aerospace aerodynamics research and science popularization, embodying the spirit of dedication and service in multiple fields [1][3][5]. Group 1: Blood Donation Contributions - Liu Zhiyong began his journey of voluntary blood donation on his 18th birthday and has since made 175 donations, totaling approximately 69,000 milliliters, which exceeds the total blood volume of 13 adults [3]. - He actively promotes blood donation, encouraging colleagues and friends to participate, thereby spreading warmth and positive energy in society [3]. Group 2: Aerospace Research Achievements - Liu Zhiyong transitioned from engineering applications to fundamental research after identifying anomalies in flight test data, leading to significant breakthroughs in complex three-dimensional aerodynamic problems [3]. - His research framework has direct applications in major national projects, including deep space exploration and the Shenzhou spacecraft, supporting the high-quality development of China's aerospace industry [3]. Group 3: Science Popularization Efforts - Since 2023, Liu Zhiyong has volunteered to teach at Beihang University, integrating inspiring stories from aerospace history into his curriculum, which has been recognized as a quality course by the Ministry of Industry and Information Technology [5]. - He has participated in science popularization competitions, developing engaging teaching materials and animations to make complex aerospace concepts accessible to students, thereby fostering interest in aerospace science among children [5].