文章大意:本文是一篇说明文。文章介绍了科学家开发了一种使用无人机为风力涡轮机叶片涂抹环保防冰涂层的方法。该方法经济有效,可以防止叶片结冰以保证风力涡轮机正常运行。科学家现在正寻求行业合作伙伴帮助商业化该技术,该技术也可用于电力线路、高层建筑顶部或其他难以用传统方式触及的物体的维护。
2 . Not unlike the wings of airplanes, the blades (叶片) of wind turbines (涡轮机) need to be kept ice-free in order to function properly. Scientists have now developed an inexpensive method of using drones (无人机) to apply an eco-friendly anti-icing coating (涂层) to those blades.
If too much ice builds up on wind turbine blades, they will turn more slowly, producing less energy. What’s more, if an equal amount of ice isn’t present on all three blades, the turbine’s balance may be thrown off, leading to increased wear and possibly even disastrous failure.
There are anti-icing heating systems that can be built into the blades, but these may be beyond the financial means of many wind farm (风电场) operators. The same can be said for using helicopters to apply ice-prevention chemicals.
Seeking a more economical but still effective alternative, scientists from two branches of Germany’s Fraunhofer research group recently started looking to drones. The research project is known as “TURBO: Temporary coating by means of drones — Icing protection of wind turbines as a case study”.
In the current version of the resulting system, a hexacopter drone is equipped with a small pump that delivers anti-icing liquid. The liquid is sprayed (喷洒) at high pressure — which is just 0. 3 mm wide — producing tiny droplets with a diameter of 100 micrometers.
Using this setup, the drone has successfully been used to apply coatings of the droplets onto the edges of wind turbine blades, even at wind speeds of up to 35 km/h (22 mph). Once solidified (固化/凝固), those coatings prevent ice formation for several weeks before a fresh coating is applied.
The scientists are now seeking industry partners to help commercialize (商业化) the TURBO technology. It could also find use in the maintenance (维护) of power lines, the upper levels of tall buildings, or other things that are difficult to reach by conventional means.
1. What is paragraph 2 mainly about?
A.Problems caused by icing. | B.The process of ice formation. |
C.Disasters brought about by drones. | D.The function of wind turbines. |
2. Which word can best describe anti-icing heating systems?
A.Ineffective. | B.Unnecessary. | C.Expensive. | D.Dangerous. |
3. What can we learn about the TURBO technology from the last paragraph?
A.It has a wider range of applications. |
B.It is a relatively traditional approach. |
C.It can solve the problem once and for all (一劳永逸). |
D.It is more costly than using ice-prevention chemicals. |
4. What is the best title for the text?
A.The Advantages of Using Wind Energy |
B.Drones Protect Wind Turbines From Icing |
C.Wind Turbines Remove Ice on Their Own |
D.A Major Breakthrough in Drone Technology |