drone experts visited tongzhou no. 2 middle school and led students to "fly over the horizon"
2024-09-03
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how do airplanes fly? how did drones come about? how far have drones in my country developed? on the afternoon of september 2, in the "2024 scientists' spirit leading the first lesson of the new school year" series of activities jointly organized by the beijing association for science and technology and the beijing news, wang yingxun, a researcher at the beijing university of aeronautics and astronautics, dean of the institute of unmanned systems at the beijing university of aeronautics and astronautics, and leader of the discipline of unmanned systems science and technology, visited tongzhou no. 2 middle school and gave a lecture on the theme of "exploration without boundaries, innovation driven - the soaring of scientists' spirit in the field of aviation uavs", leading the children to "fly over the horizon".
at the lecture, wang yingxun encouraged the children to ask questions actively and express their opinions bravely. "popular science is very important. many aircraft designers have loved model airplanes since they were young. cultivating scientific interests in children and letting more and more children like aerospace will lead to more talents in this field," said wang yingxun.
wang yingxun, a researcher at the beijing university of aeronautics and astronautics, dean of the institute of unmanned systems at the beijing university of aeronautics and astronautics, and leader of the discipline of unmanned systems science and technology. photo by liu yang, a reporter from the beijing news
conduct experiments on site to feel the lift of airflow
at about 4 p.m., just after the last class, more than 300 first-grade students rushed into the lecture hall of tongzhou no. 2 middle school with pens and papers. after wang yingxun started his lecture, the lively scene quickly quieted down. wang yingxun started with the dream of flying in 2000 bc, introduced the history of the development of aircraft, and the application and development of aircraft in war, life and other fields.
"how can such a heavy thing fly into the air? this requires the bernoulli equation, which states that the sum of dynamic pressure and static pressure is equal to a constant. doesn't this sound difficult to understand?" when introducing the principles of flight, wang yingxun used various animated images and practical examples to explain the principles to students. he told the children that they could understand this equation through a small experiment of "blowing small pieces of paper" and encouraged them to experiment by themselves. the sound of tearing paper strips was heard at the scene, and the students blew the paper strips in their hands to feel the lift effect of the airflow. "when the lift is greater than the weight of the plane, the plane will fly." wang yingxun said.
students took out the paper and tried to blow it. photo by liu yang, a reporter from the beijing news
then, he introduced the relevant research on aircraft and the development of unmanned aerial vehicles. wang yingxun introduced that in addition to the military, drones have also played a huge role in civilian use. "drones come in large and small sizes, what are they used for?" wang yingxun gave an example, saying that drones can fly for dozens of hours or even days, and can fly and explore in areas that are difficult for people to reach. in addition, drones have the characteristics of high stealth, high maneuverability, long flight time, and long range, and can achieve autonomous, information-based, networked, and collaborative flight. today, new technologies such as artificial intelligence are also empowering drones.
wang yingxun told the students that drones are platforms for information warfare and unmanned non-contact long-range combat, which can carry out real-time surveillance and reconnaissance, assessment, interference, deception, and direct strikes; they are platforms for scientific research and application, which can be used in resource exploration, meteorological detection, disaster prediction and control, agriculture, etc.; they are platforms for basic research in aviation technology, which are used to verify advanced aviation technologies such as hypersonic speeds, new power sources, stealth structures, and new aircraft, and to a certain extent, they are driving and promoting the development of aviation technology.
students asked bold questions with their "brains opened"
during the lecture, wang yingxun interacted with the children from time to time, encouraging them to speak bravely. students were even allowed to rush to the podium to express their own opinions.
wang yingxun said that my country's drones have a bright future, but to make drones better, researchers need to keep pushing them forward. "the next miracle on the horizon will depend on the creation of all the students here. the bigger your heart is, the bigger the stage will be."
students from tongzhou no. 2 middle school went on stage to interact with wang yingxun. photo by liu yang, a reporter from the beijing news
at the end of the lecture, wang yingxun encouraged students to ask more questions. "i think the development of artificial intelligence is not a good thing. i don't support the excessive development of artificial intelligence, which will threaten human survival." a male student put forward his point of view, and wang yingxun did not directly refute it. he used the invention of guns as an example, "guns can kill people and protect people. for example, if you have weapons and i have weapons, we can negotiate. at this time, can weapons protect people?" wang yingxun also praised the student, "you are very brave and insightful. i strongly encourage young people to think proactively."
wang yingxun would not directly draw conclusions about the children's seemingly mind-blowing questions, but inspire them to think. in an interview with reporters, wang yingxun said that thinking is a very interesting thing, and popular science must capture the hearts of children.
beijing news reporter liu yang
edited by miao chenxia
proofread by jianing
