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

A |     嘉宾现场体验阿尔法S5。    

    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 
。 北京日报记者 赵语涵摄　　北京日报讯（记者     赵语涵）昨晚（4月22日），北汽集团旗下新能源高端品牌极狐举办新车型预售发布会，定位为中高端轿跑的阿尔法S5开启预售，起售价19.98万元。今年一季度以来，来自北京的汽车品牌在新能源市场上频频亮相，极狐、小米、理想等品牌分别发布了涵盖轿车、SUV、MPV等不同车型，成为活跃在新能源中高端市场上的生力军。　　发布会开始前，预售现场的几辆阿尔法S5展车吸引了众多嘉宾的目光，大伙儿纷纷坐进展车内零距离体验这一新车型。“空间挺宽敞的！”“内饰挺有质感！”“车身流线型，好看！”点赞声不绝于耳，嘉宾们对于这款新车的期待感也被逐步点燃。　　在当下竞争白热化的新能源市场上，阿尔法S5零至百公里加速度最快达到3.7秒，最高CLTC（中国汽车行驶工况）续航里程为708公里，最快充电时效可实现充电10分钟续航超过280公里，一系列核心数据在纯电轿车市场颇具竞争力。　　除了一系列“硬核”配置，这款车型的设计也颇为用心，在降低风阻、保障动力的同时，尽可能提升了车内空间。“坐在车里，我们头部距车顶空间有两至三拳，车宽超过1.9米，后排三人乘坐很宽敞舒适。”北京新能源总经理代康伟说。　　发布会上，阿尔法S5的售价正式出炉。该车型分为两个版本，拥有3秒级百公里加速度、CLTC续航里程为650公里的版本售价为21.98万元；CLTC续航里程达708公里，但动力稍逊的长续航版本售价为19.98万元。值得一提的是，极狐针对6月30日前下订单的顾客推出限时优惠，两款车型优惠后价格为19.48万元和17.48万元。

B | 　　今年以来，理想、小米、极狐等来自北京的新能源品牌已陆续发布MEGA、SU7、L6、阿尔法S5等多款车型。这些车型瞄准中高端市场，在轿车、SUV、MPV等多领域成为新能源市场上的有力竞争者。即将到来的北京车展上，北京汽车品牌也将携新车型闪亮登场。

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Published on:05:49:20