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VOA科学技术2022--探索月球的新型太空飞行器

时间:2022-04-13 04:38来源:互联网 提供网友:nan   字体: [ ]
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New Space Vehicle Built to Explore the Moon

An American company has presented a new space vehicle built to explore the moon.

California-based Venturi Astrolab uncovered its working model of the vehicle last week. The explorer, or rover, is called FLEX1.

Astrolab officials say the four-wheeled rover was designed to be sent to the moon by the American space agency NASA. FLEX was developed to transport astronauts and cargo2 and support a series of lunar activities and experiments.

If NASA chooses to use the vehicle, it will become part of the Artemis program. That program aims to return humans to the moon as early as 2025. It also calls for establishing a long-term base on the moon that could one day launch astronauts to Mars.

FLEX could become the first astronaut-transporting vehicle to visit the moon since NASA's Apollo 17 mission in 1972. Apollo 17 was the last of six American manned missions to the moon.

Retired3 Canadian astronaut Chris Hadfield recently test drove the vehicle. He said in a video released by Astrolab that rovers used during the Apollo missions were built purely4 for exploration purposes. But, Hadfield added, FLEX was designed to support astronauts landing on the moon for long-term stays.

"Once you get there, you've got to be able to move things around," he said. "You also need to transition the equipment that keeps you alive and that enables the activities."

Hadfield added: "When we settle somewhere, we don't just need to get people from one place to another, but we need to move hardware, cargo, life support equipment and more."

Apollo 17's rover set a moon speed record of 17.7 kilometers per hour. Astrolab chief Jaret Matthews says FLEX can move just as fast. He told Reuters such a speed is "kind of a practical limit for the moon," where gravity is one-sixth that of Earth. Matthews is a former rover engineer for NASA's Jet Propulsion Laboratory.

Vehicles designed for the Apollo missions operated with astronauts sitting and driving the vehicles like a car. With FLEX, astronauts stand in the back and control the vehicle with a joystick device.

The vehicle weighs about 500 kilograms, but can carry loads up to 1,500, Astrolab officials say.

With its sun-powered batteries fully5 charged, FLEX is designed to operate continuously for up to eight hours. Matthews said the vehicle's energy storing system can survive the extreme cold of a lunar night and the rover can operate in total darkness.

Video of the test drive showed FLEX driving over sand and rocks in the California desert near Death Valley National Park. After the test, Hadfield said "it was huge fun" driving the vehicle.

Words in This Story

cargo – n. goods that are carried in a vehicle

manned mission – n. an important project or trip (especially space travel) that is carrying, staffed or performed by one or more people

transition – v. to change from one system or method to another

practical – adj. suitable or useful for a situation that may involve difficulty

joystick – n. a vertical6 handle used to control a computer game or piece of machinery7

battery – n. a device that provides and stores electricity for certain electronic devices


点击收听单词发音收听单词发音  

1 flex Cjwxc     
n.皮线,花线;vt.弯曲或伸展
参考例句:
  • We wound off a couple of yards of wire for a new lamp flex.我们解开几码电线作为新的电灯花线。
  • He gave his biceps a flex to impress the ladies.他收缩他的肱二头肌以吸引那些女士们的目光。
2 cargo 6TcyG     
n.(一只船或一架飞机运载的)货物
参考例句:
  • The ship has a cargo of about 200 ton.这条船大约有200吨的货物。
  • A lot of people discharged the cargo from a ship.许多人从船上卸下货物。
3 retired Njhzyv     
adj.隐退的,退休的,退役的
参考例句:
  • The old man retired to the country for rest.这位老人下乡休息去了。
  • Many retired people take up gardening as a hobby.许多退休的人都以从事园艺为嗜好。
4 purely 8Sqxf     
adv.纯粹地,完全地
参考例句:
  • I helped him purely and simply out of friendship.我帮他纯粹是出于友情。
  • This disproves the theory that children are purely imitative.这证明认为儿童只会单纯地模仿的理论是站不住脚的。
5 fully Gfuzd     
adv.完全地,全部地,彻底地;充分地
参考例句:
  • The doctor asked me to breathe in,then to breathe out fully.医生让我先吸气,然后全部呼出。
  • They soon became fully integrated into the local community.他们很快就完全融入了当地人的圈子。
6 vertical ZiywU     
adj.垂直的,顶点的,纵向的;n.垂直物,垂直的位置
参考例句:
  • The northern side of the mountain is almost vertical.这座山的北坡几乎是垂直的。
  • Vertical air motions are not measured by this system.垂直气流的运动不用这种系统来测量。
7 machinery CAdxb     
n.(总称)机械,机器;机构
参考例句:
  • Has the machinery been put up ready for the broadcast?广播器材安装完毕了吗?
  • Machinery ought to be well maintained all the time.机器应该随时注意维护。
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