Luo is a famous aerodynamicist and aviation educator in China. He edited the first aerodynamic textbook in China and has been engaged in the teaching and research of aircraft component aerodynamics, transonic aerodynamics, high angle of attack aerodynamics and computational fluid dynamics for a long time. He has compiled more than ten lectures on aerodynamics, published more than 100 academic papers, and directed dozens of graduate students, making outstanding contributions to the development of aerodynamics in China. He is Qian Xuesen's first doctoral student.

Luo 1923, from Nanchang, Jiangxi. When he was a teenager, it was a difficult time for China warlords to scuffle and Japanese aggression. As a teenager, he made up his mind to learn aviation and science to save the country. 194 1 was admitted to the Department of Aeronautical Engineering of Central University and obtained a bachelor's degree from 1945. Because of his excellent academic performance, he was hired as a resident teacher. 1947 was sent to the Department of Aeronautical Engineering, University of Minnesota, USA, and 1948 received a master's degree in aeronautical engineering; In the same year, he was admitted to the Aviation Department of California Institute of Technology with excellent results, majoring in aerodynamics and minoring in mathematics. He studied under Professor Qian Xuesen, the first doctoral student of Qian Xuesen.

Under the guidance of Qian Xuesen, he began to study the aerodynamic mechanism of the crash of Yongke aircraft due to tail flutter. Luo deeply understood Qian Xuesen's method of studying theoretical fluid mechanics and successfully completed his doctoral thesis, which won Qian Xuesen's esteem. 1950 received a doctorate in aviation and mathematics from California Institute of Technology.

At the age of 27, he refused to stay in the United States, refused the invitation of Taiwan Province Province, and resolutely embarked on the journey of/kloc-0 back to Chinese mainland in September, 950. Luo and others were detained by the US military and Taiwan Province agents when they returned home by boat via Yokohama. They spent four months in prison and returned to their motherland at the beginning of 195 1 with the intervention of the government of China. He wrote the first aerodynamics textbook in China.

After returning to China, Luo was assigned to work in the Mechanics Research Office of the Institute of Mathematics of China Academy of Sciences. 1952, China * * * Production Party decided to establish Harbin Institute of Military Engineering. According to the arrangement of the Party, Luo went to Harbin Military Industry in June, 1952, 1 1, to give a lecture on "aerodynamics". His course is a famous demonstration course in the whole hospital. At that time, there was no Chinese textbook for aerodynamics in China. After the exploration of teaching practice, Luo Yu 1955 compiled the first aerodynamic textbook in China. Because of his excellent teaching, 1953 became the representative of the "May 1st" Tiananmen Square ceremony of China People's Liberation Army, and was cordially received by Chen Yi and other national leaders. During the Cultural Revolution, Luo's family and body and mind were greatly devastated. Under extremely difficult conditions, he still insisted on the scientific research he loved. 1970 Harbin Military Aviation Engineering Department was merged into Northwestern Polytechnical University, and Luo was transferred to Northwestern Polytechnical University as a professor. 1979 to 1984 served as vice president of the school and director of the aerodynamics research office. His scheme was used in the design of China's first new supersonic aircraft.

1958, he first proposed the aerodynamic interference calculation scheme of wing-body combination with low aspect ratio, which was used to design the first new supersonic aircraft in China. The finite difference method is applied to the aerodynamic calculation of aircraft for the first time, which has made a pioneering contribution to the development of computational fluid dynamics in China. Presided over the calculation program of longitudinal aerodynamic difference of transonic wing-fuselage-horizontal tail-vertical tail combination, 1977 won the scientific research achievement award of Shaanxi Province, and 1978 participated in the National Science Conference as an award-winning representative.

1976 solved the convergence problem of nonlinear aerodynamic calculation at high angle of attack for the first time in China, and 1988 increased the angle of attack to 600, and obtained the results of asymmetric aerodynamic calculation for the first time in the world, which made a breakthrough in calculation methods and had high theoretical and application value. 1983 participated in the second-order approximation method of transonic small disturbance potential flow and its application research in airfoil and wing flow, and won the theoretical achievement award of the Ministry of Aviation Industry. 1986 cooperated with "computer simulation research on flow field of S-shaped inlet" and won the second prize of scientific research achievements in colleges and universities in Shaanxi Province. Luo has been invited to study and give lectures in more than a dozen foreign universities and research institutes such as Sweden, the former Federal Republic of Germany and the United States. He first established the scientific research cooperation relationship between Northwestern Polytechnical University and the Federal German Institute of Aeronautics and Astronautics, and made a large number of young and middle-aged teachers majoring in aerodynamics go to the Federal German Institute of Aeronautics and Astronautics for further study. Starting from the height of aerodynamics discipline construction, Luo proposed "self-correcting wind tunnel" as an important research direction in 1980, guiding graduate students to explore and urging the aerodynamics laboratory to do in-depth research, which made the discipline achieve rich results and attracted great attention at home and abroad. At the age of ninety, he is still instructing students to carry out scientific research experiments.

Since 2000, he has cooperated with Professor Liu Feng of the University of California, Irvine and Professor Cai Jinsheng of Northwestern Polytechnical University to study the absolute stability theory of slender cone vortex, and verified it by numerical calculation, giving a reasonable explanation for the inconsistency of experimental results in the literature, clarifying the academic controversy about the stability of symmetric separated vortex of delta wing at high angle of attack, which has application value for aerodynamic design and control of aircraft forebody. Since 2007, Luo and Liu Feng have cooperated to study the vortex instability theory based on the cone with high angle of attack. The lateral aerodynamic force and moment of the cone are controlled by plasma excitation method, and the linear control curve of lateral force and yaw moment is realized by duty cycle technology. He found that the change of lateral force with time under duty cycle is a continuous curve, not a rectangular curve predicted by predecessors. The flow control method of plasma excitation has the advantages of fast response speed, low input power and no moving parts, and has a good application prospect.

Luo has successively won several major scientific research achievement awards from the former Ministry of Aerospace Industry, Shaanxi Science and Technology Achievement Award, advanced worker and expert with outstanding contributions from the Ministry of Aviation (1992) and national model worker (1988). Many of his academic papers have been translated into English by the Bureau of Foreign Technology of the US Air Force and the American Aerospace Research Institute. His name has been included in the Encyclopedia of China Aerospace (1985), Who's Who in Science and Engineering in the United States (1992~ 1993), National Defense Science and Technology in Contemporary China (1992) and China Dictionary of Scientific and Technological Talents. Commentator of American Mathematical Criticism Society, consultant editor of Computer Methods in Applied Mechanics and Engineering in the Federal Republic of Germany, editor of Journal of Progress in Aviation and Mechanics, deputy editor of Journal of Aerodynamics, director of Mechanics Society, director of Aviation Society and honorary director of Aerodynamics Society. He used to be the chairman of the Science and Technology Committee of the Ministry of Aviation Industry, a member of the theoretical and applied mechanics Discipline Group of the State Science and Technology Commission, and a member of the Engineering Mechanics Group of the Technical Department of China Academy of Sciences. 1979- 1984 served as vice president of Northwestern Polytechnical University and director of aerodynamics research office. 1993 After retirement, I worked as a researcher at the University of California, Irvine.

Today, Luo Yuan is in California, USA, and also uses the Internet to guide graduate students studying at Northwestern Polytechnical University. He is not only strict with his students, but also persuasive. He not only cares about students' academic progress, but also helps them improve their thinking. Over eighty years old, he is still struggling in the front line of scientific research and training aerodynamic successors for the country.