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单词 Orbital launch
释义

Orbital launch

原声例句
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An orbital launch with an Atlas Rocket is going to take time.

靠擎天神火箭推动升空需要花费很多时间。

VOA Daily Standard 2020年6月合集

The first crewed orbital launch from the United States in nearly nine years took place on May 30, 2020.

美国近9年来首次载人轨道发射于2020年5月30日进行。

TED演讲(视频版) 2022年4月合集

It's looking promising for us to have an orbital launch attempt in a few months.

EM:我们看起来很有希望在几个月内进行轨道发射尝试。

TED演讲(视频版) 2022年4月合集

So assuming we get regulatory approval, I think we could have an orbital launch attempt within a few months.

因此, 假设我们获得监管部门的批准,我认为我们可以在几个月内进行轨道发射尝试。

CNN 10 学生英语 2022年2月合集

Before they can launch from Starbase, Texas to orbit, they need FAA approval, and SpaceX and Musk hopes to have that in a matter of weeks and they hope to make that first orbital test launch here from Starbase, Texas.

在SpaceX从德州星际基地将火箭发射到轨道之前,他们需要得到联邦航空局的批准,SpaceX和马斯克希望能在几周内得到批准,并且希望能在德州星际基地进行首次轨道发射测试。

英语百科

Orbital spaceflight

(重定向自Orbital launch)
Space Shuttle Discovery rockets to orbital velocity, seen here just after booster separation
 The International Space Station during its construction in Earth orbit in 2001. It must be periodically re-boosted to maintain its orbit

An orbital spaceflight (or orbital flight) is a spaceflight in which a spacecraft is placed on a trajectory where it could remain in space for at least one orbit. To do this around the Earth, it must be on a free trajectory which has an altitude at perigee (altitude at closest approach) above 100 kilometers (62 mi) (this is, by at least one convention, the boundary of space). To remain in orbit at this altitude requires an orbital speed of ~7.8 km/s. Orbital speed is slower for higher orbits, but attaining them requires higher delta-v.

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更新时间:2025/6/20 20:06:06