Extra-vehicular activity (EVA) is work done by an astronaut away from the Earth and outside of a spacecraft. The term most commonly applies to an EVA made outside a craft orbiting Earth (a spacewalk) but also applies to an EVA made on the surface of the Moon (a moonwalk). In the later lunar landing missions (Apollo 15, 16, and 17) the command module pilot did an EVA to retrieve film canisters on the return trip; he was assisted by the lunar module pilot who would perform a stand up EVA. These trans-Earth EVAs were the only spacewalks ever conducted in deep space to date.
The first EVA was carried out by Alexey Leonov on March 18, 1965 from the Voskhod 2 spacecraft.
The first EVA by an American astronaut was made on June 3, 1965 by Edward White during the Gemini 4 mission.
The first EVA that was a moonwalk rather than a spacewalk was made by American astronaut Neil Armstrong on July 20, 1969 when the Apollo 11 Lunar Module Eagle landed on the Moon. He was joined by crewmate Buzz Aldrin, and their EVA lasted 2 hours and 32 minutes.
The first untethered spacewalk was by American astronaut Bruce McCandless II on February 7, 1984, during Challenger mission STS-41-B. He was subsequently joined by astronaut Robert L. Stewart during the 5 hour 55 minute spacewalk.
The first woman to perform an EVA was Cosmonaut Svetlana Savitskaya on July 25, 1984 while aboard the Salyut 7 space station. Her EVA lasted 3 hours and 35 minutes.
The first American woman to make an EVA was Kathryn D. Sullivan, who stepped into space on October 11, 1984 during Space Shuttle Challenger mission STS-41-G.
The first (and only) three-person EVA was performed on May 13, 1992, as the third EVA of STS-49, the maiden flight of Endeavour.[1] Pierre Thuot, Richard Hieb, and Thomas Akers conducted the EVA to capture and repair a non-functional Intelsat VI-F3 satellite, and equipped the satellite with a new motor, that after release, moved it into its planned geosynchronous orbit.
The first EVA by a non-Soviet, non-American astronaut was made on December 9, 1988 by Jean-Loup Chrétien of France during a three-week stay on the Mir space station.
On February 9, 1995, Bernard A. Harris, Jr. and Michael Foale became the first African American and the first Briton, respectively, to perform an EVA.
On April 22, 2001, Chris Hadfield became the first Canadian to perform an EVA, while installing the Canadarm2 on to the International Space Station.
The first EVA to perform an in-flight repair of the space orbiter was by American astronaut Steve Robinson on August 3, 2005, during "Return to Flight" mission STS-114. Robinson was sent to remove two protruding gap fillers on the Space Orbiter Discovery's heat shield, after engineers determined they might cause damage to the shuttle upon re-entry. Robinson successfully removed the loose material while the Discovery was docked to the International Space Station.
自己去百度搜吧
写作思路:可以从人类为什么探索太空这个角度出发进行阐述,中心要明,语言要通顺等等,比喻语法使用错误。
正文:
The purpose of human development of science and technology is to obtain more power and resources from nature. Improve their living conditions.
人类发展科技的目的是什么,就是为了从自然界获取更大的力量,更多的资源。改善自己的生存条件。
After all, the earth is only that big. The development direction of human technology must be the universe. We need to fly farther and faster to other planets and the universe. This is our direction and our goal.
地球毕竟只有那么大,人类的技术发展方向必然是宇宙,我们需要飞得更远,更快,到其他星球上去,到宇宙中去。这是我们的方向,是我们的目的。
As for the fact that the development of aerospace technology can drive the development of other technologies, for example, Apollo program has brought us a non stick pot, which is only incidental, not the main purpose and motivation of aerospace development.
至于说,宇航技术的发展可以带动其他技术的发展,比如说阿波罗计划为我们带来了不粘锅,那只是附带的,不是宇航发展的主要目的和动机。
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本文概览:Extra-vehicular activity (EVA) is work done by an astronaut away from the Earth and outs...
文章不错《关于太空行走的英语介绍》内容很有帮助