To advance wind turbine (汽轮机,涡轮机)technology to meet the requirements of extremely rough environments like that on Mars, Ames partnered with NSF (the National Science Foundation) and the Department of Energy. " It was clear that a lot of the same features were also found in the cold regions of the Earth,“ says Bubenheim. "NASA took the leadership on the team because we had the longest-term technology—a Mars turbine.”
Years before, NSF had worked with a company called Northern Power Systems ( NPS) , based in Barre, Vermont, to build a 3-kilowatt wind turbine on Black Island off the coast of Antarctica. The main purpose of this turbine was to power communications to the NSF's South Pole station. In 1993 , Ames awarded the same company a Small Business Innovation Research ( SBIR) contract (合 同)to construct a similar wind turbine at the South Pole.
Jonathan Lynch, the chief technology officer at NPS, says the South Pole has less wind than Black Island but is even colder. " It's hard to have steels that work in those temperatures,“ he says. " The cold affects the parts and everything gets extremely fragile. We looked at which materials were appropriate for flexible wires, irons, and steels, and what lubrication (润 滑) systems were going to work and for what temperatures over a long period of time.”
In 1997, NPS made a 3-kilowatt turbine at the South Pole, and then began developing a 100-kilowatt turbine that could function in the same extreme conditions. The first types of the larger turbine were successfully deployed in Kotzebue, Alaska and Golden, Colorado. " They were fully tested in loads to make sure they worked, and we then built a lot of them, " says Lynch.
By 2000, the wind turbine technology had won an R&D 100 Award from R&D Magazine , and since then, says Bubenheim, "It's been copied and put in a lot of places around the globe. "
1.From the first paragraph, we can infer that_____.A.the team wanted to build a wind turbine used on Mars |
B.Mars and the Earth have the same features |
C.NASA played the most important part in the team |
D.the team was made up of Ames, NSF, the Department of Energy and NASA |
A.The wind turbine technology was invented by Ames. |
B.NPS made wind turbines for NSF and Ames. |
C.NSF and Ames both used the wind turbines at the same place. |
D.The wind turbine technology was only used in America. |
A.The South Pole has worse condition than the Black Island. |
B.NPS had confidence to build a wind turbine for the South Pole. |
C.The materials for the turbines have to stand the extreme cold. |
D.NPS had more challenges in building a wind turbine for the South Pole. |
A.made | B.invented | C.used | D.advanced |
同类型试题
y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2