A civil aviation aircraft rushing into the blue sky is inseparable from aviation tires that can work normally under high speed, high load and high impact conditions. However, the manufacturing process of aviation tires is extremely complex, and its core manufacturing technology has been controlled by several foreign companies for a long time. In order to break through the key core technologies, Chinese scientists have opened up a new track, proposed the technical route of bionic synthetic rubber, and achieved important breakthroughs.
China's bionic synthetic rubber technology has achieved an important breakthrough.
Aviation tires are typical consumables, for a long time, China's civil aviation aircraft mainly use the way of leasing foreign aviation tires, and the independent and controllable core technology of aviation tires is imperative.
According to reports, raw materials are the first step to restrict the development of high-end aviation tires in China. In 2022, China's natural rubber production will be about 740,000 tons, but the consumption will exceed 6.6 million tons, nearly 90% of which will be imported. To achieve the goal of stable supply and large-scale industrial production, biomimetic synthetic rubber is the only method.
Changchun Institute of Applied Chemistry, Chinese Academy of Sciences is a scientific research base for bionic synthetic rubber in China. After years of joint research, the scientific research team has achieved an important breakthrough in biomimetic rubber synthesis technology this year by imitating the molecular structure and key chemical components of natural rubber.
According to scientific researchers, the key performance indicators of bionic synthetic rubber have reached the level of imported super-grade natural rubber.
Yang Xiaoniu, Director of Changchun Institute of Applied Chemistry, Chinese Academy of Sciences: The successful research and development of biomimetic synthetic rubber indicates that we have turned natural rubber from an agricultural product into an industrial product, and no longer rely on imports. We can dynamically adjust the production volume according to market demand.
Relying on the big science center to check the performance of aviation tires.
Aviation tires are directly related to the safety of the aircraft, not only to withstand the extreme temperature of minus 40 degrees Celsius to minus 70 degrees Celsius, but also to withstand the impact force of dozens of tons at the moment of landing, so the performance test of aviation tires is very critical. Researchers can only understand the maximum service life of tires after hundreds to thousands of extreme tests.
The Aviation Tire Science Center is currently the most advanced research facility for flight take-off and landing dynamics in China, and its core is a series of large devices for flight take-off and landing dynamics, mainly including aviation tire high-acceleration test bench, tire pavement environment test bench, aircraft landing gear swing test bench and other large devices. Relying on the big science center, researchers can check the performance of aviation tires.
Yang Xiaoniu, Director of Changchun Institute of Applied Chemistry, Chinese Academy of Sciences: The high-acceleration test bench is the first equipment to be debugged and commissioned, through which we can know the reliability, life and other performance of aviation tires in all-weather use.
After repeated tests, the bionic synthetic rubber aviation tires developed by Chinese scientists and sent here can be increased by more than 35% compared with the aviation tires made of natural rubber under extreme working conditions.
Independent research and development of digital tire industry software.
Synchronize tire structure design and performance**.
According to scientific researchers, tires are divided into more than a dozen parts, and each part has different firmness, wear resistance, and bearing capacity. In the design, different parts of the aviation tire need to be developed and designed, and its service life needs to be accurately rated.
To this end, researchers have independently developed a new set of digital tire industry software to simultaneously realize tire structure design and performance.
In the software, the various data and force conditions of the tire are clear at a glance, which can not only realize the design of sub-millimeter spatial resolution, but also greatly shorten the original process and development time.
Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, relying on the "bionic synthetic rubber" project, has completed the whole chain of aviation tire localization technology and application verification, realized the original technological breakthrough of bionic synthetic rubber and digital tire industry software from "0" to "1", and mastered 41 core technologies, so that China has embarked on an innovation road that is completely different from Western countries in the aviation tire industry.
*: CCTV News).
Editor: Zhang Jing].
*: CCTV News).