天籁之声
From the grove to the sky: Chinese team develops drone made of bamboo-based composites_我的网站

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Long Bamboo, a company based in East China's Fujian Province, developed the technique that preserves the bamboo's tough outer layer and allows different parts with different densities of the material to be used according to their properties, improving its overall performance.
In the past, the outer skin of bamboo was often treated as leftover material and eventually burned into low-value bamboo charcoal.
According to a company release in February, bamboo-based composites now make up more than 25 percent of the entire drone, while its fuselage skin is made entirely from the company's own high-performance bamboo composite material.
The bamboo-based material also offers a major cost advantage, costing only about one-quarter to one-tenth as much as aviation-grade carbon fiber. After the drone is retired, the material can naturally degrade, allowing it to effectively "come from nature and return to nature."
The team spent four years building data models, upgrading equipment and refining the material. The resulting drone has a wingspan of more than 2.5 meters but weighs only about 7 kilograms, and has already completed multiple test flights, according to CCTV News.
Bamboo was traditionally used mainly in products such as tableware and furniture. Now, however, the material is finding its way into a wider range of industrial applications. Bamboo fiber is being used in automobile interiors, while bamboo-based materials are also being explored as possible substitutes for plastics, glass fiber and carbon fiber in some applications.
China has the world's largest bamboo resource base, with about 7.56 million hectares of bamboo forests nationwide. The country also ranks among the world leaders in bamboo resources, bamboo cultivation technologies and the development and utilization of bamboo materials, per CCTV News.
Global Times
。 부정수급 땐 사용금지 등 조치 재정지원 공정성 높이기 강화앞으로 교통비 환급 서비스인 ‘모두의카드’ 이용 시 부정수급을 3차례 하면 1년간 이용할 수 없게 된다. 조직적이고 반복적으로 부정수급하다 걸리면 최대 3년까지 사용이 금지된다. 국토교통부 대도시권광역교통위원회는 26일 모두의카드 부정수급을 예방하고 재정지원의 공정성을 높이기 위해 이 같은 내용으로 서비스 이용 약관을 개정한다고 밝혔다.
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