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“Due to the 250-gram weight limit, every gram of the drone’s body must be meticulously calculated, but I ultimately completed this challenge.” On June 13, Xu Yang, a junior student from the Chinese University of Hong Kong (Shenzhen), shared with a reporter from Beijing Youth Daily about his experience of creating a drone that set a Guinness World Record.
Junior Student Builds Mini Drone, Every Gram of Weight Must Be Carefully Calculated
On March 23 of this year, Xu Yang’s self-made drone, weighing only 247 grams and costing less than 3000 yuan, broke the Guinness World Record by achieving a speed of 340.78 km/h, setting the current record for the highest ground speed of a remote-controlled mini quadcopter.
Regarding the origin of this record-breaking achievement, Xu Yang told the reporter that in October 2024, he saw a foreign blogger initiate a “mini drone speed challenge” project on a social media platform, aiming to create a mini drone weighing less than 250 grams that could exceed 250 km/h. “The mini drone he made ultimately did not reach the challenge goal, achieving only 219 km/h.” Xu Yang said, “As a model aircraft enthusiast, I wanted to use my knowledge to try to achieve his goal and create a mini drone that could reach 250 km/h.”
Subsequently, after preparing various materials and drawing the high-speed propeller designs step by step, Xu Yang began to develop the drone.
To achieve the highest speed, there were many technical challenges during the development process, as the drone’s thrust and flight state would affect its speed. Xu Yang stated that the biggest technical challenge was the overall design of the system, balancing the need to minimize aerodynamic drag and weight while ensuring high operational efficiency at high speeds.
Xu Yang said: “Because it has a 250-gram weight limit, ideally all weight should be used for motor propulsion, while other weights are only to support the motor’s operation. Therefore, every gram of weight must be carefully calculated.”
Overcoming Technical Challenges, Success After Multiple Tests
To solve the technical challenges, Xu Yang considered the design from an extreme perspective from the beginning, but achieving the perfect parameters required a process of continuous exploration and experimentation. In early November 2024, during motor testing, a parameter issue during the exploration phase caused the motor to burn out, and the prototype crashed during test flights, destroying the aerodynamic shell and breaking the carbon fiber skeleton, forcing him to remake a new body. Nevertheless, he still obtained valuable data from this, paving the way for future optimizations.
Subsequently, Xu Yang accumulated experience by adjusting parameters and gradually solved the technical issues, continuing to optimize the drone even the day before the record challenge.
With a truss-style carbon fiber skeleton, ultra-thin 3D printed shell, and self-developed 3D printed high-speed propellers, he ultimately pushed the speed to the limit… On March 23 of this year, this drone, which embodies his hard work, set the world record at 340.78 km/h. In mid-April, Xu Yang received certification from Guinness World Records, meaning he created a new Guinness World Record for the fastest ground speed of a remote-controlled (RC) mini quadcopter.
“His drone has clever designs, drawing on many previous successful experiences, and features unique designs. He completed everything by hand from start to finish.” Xu Yang’s university teacher, Professor Jin Yuhua from the School of Science and Engineering, mentioned in an interview that Xu Yang self-taught the entire process of drone manufacturing, including the components, using 3D technology for the drone’s shell, motor connections, and electronic circuit design. Professor Jin believes Xu Yang is a standard “geek,” with a very innovative spirit and strong learning ability.
Among Speed Challengers, It鈥檚 Not Competition, But Cooperation and Mutual Assistance
Senior student Ou Hairong, who worked with Xu Yang in the same research group, expressed, “When I learned from him that he was applying for the Guinness World Record and ultimately succeeded, I was very impressed; the Guinness World Record is meant for people like him.”
In Ou Hairong’s view, Xu Yang is introverted, serious, and accustomed to working alone, with a mind as sharp as a scalpel. “A common scene is that after I share a long list of ideas, he will pause for a moment, point out the ambiguities, and hope I can explain further. Such conversations are often highly efficient, allowing us to find the most practical solution in a short time.” Ou Hairong said.
During the challenge, Xu Yang also frequently exchanged experiences and ideas with overseas researchers, encouraging each other. “Among speed challengers, it鈥檚 not competition, but cooperation and mutual assistance,” Xu Yang said. “If someone comes to challenge this record in the future, I will certainly do my best to share my experiences.”
Intern Li Maojian
Written by/Beijing Youth Daily Reporter Dong Zhenjie
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