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From the grove to the sky: Chinese team develops drone made of bamboo-based composites_我的网站
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A drone made of bamboo-based composite materials is seen in flight. Photo: official WeChat account of Long BambooA Chinese team has developed a drone using bamboo-based composite materials after making a breakthrough in a technique that allows bamboo to be flattened while preserving its tough outer layer. The drone has completed multiple test flights, China Central Television (CCTV) News reported.
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
。 Sophie 编译 奥克兰警方逮捕了四名12至15岁的丰盛湾青少年，此前他们因偷车事件被警鹰直升机追踪，汽车在奥克兰的高速公路上被钉刺扎破。
警方的一份声明称，这些年轻人是今天在Hillsborough驾车逃逸的，后来在Counties Manukau被逮捕。
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奥克兰市西区指挥官Alisse Robertson督察说，警方接到报告称，大约凌晨4点15分，一辆被盗车辆行驶在SH20号高速公路上。
“警鹰直升机发现这辆车在向南行驶，调查很快确定汽车是从罗托鲁瓦的一处地址偷的。
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Robertson表示，车上的人注意到警察后加速逃离。
她说，警察没有追赶，但是警鹰直升机继续追踪车辆，当它继续向南行驶时。
警察在Bombay Hills的高速公路上放置了钉刺。
“这辆车在Mercer出口下了高速公路，最终在McLean St停了下来。”
车上有三名乘客当场被捕。第四个人逃跑了，但不久之后被找到，也被逮捕了。
Robertson说，这是一个很好的结果，而且“非常幸运没有人受伤”。
“有时，这辆车的速度几乎是限速的两倍，这简直是置生命于危险之中。”
“对于那些参与这种行为的人，我们的信息很明确：警方将继续逮捕并追究涉案人员的责任。”
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(责编：Sophie)
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