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美媒:美国国家航空航天局将向火星发射第一架自动驾驶直升机

NASA is sending its first autonomous helicopter to Mars in 2020

美国国家航空航天局将于2020年向火星发射第一架自动驾驶直升机

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The next vehicle NASA is sending to Mars nestles somewhere between a rover and a satellite, at least in terms of altitude. The agency is bundling an autonomous helicopter with the Mars 2020 rover to test airborne vehicles on the red planet.

美国国家航空和宇宙航行局(NASA)向火星发射的下一辆运载车位于探测器和卫星之间。NASA将一架自动直升机与火星2020探测车捆绑在一起以测试这颗红色星球上的飞行器。

The drone weighs 1.8 kilograms (just under four pounds) and the dual, counter-rotating blades will spin at around 3,000 rpm, roughly 10 times the rate of a regular helicopter. That high blade rotation is important to get the helicopter airborne because of the low atmospheric density on Mars -- when the drone's on the ground, it'll already be at an Earth-equivalent altitude of 100,000 feet. NASA also packed in a heating mechanism to help the drone survive the frigid Mars nights.

这架无人机重达1.8公斤(略低于4磅),双反旋转叶片的转速大约为3000转/分钟,大约是普通直升机的10倍。由于火星上的大气密度很低—当无人机在火星地面上的时候,它已经相当于处在10万英尺的地球高度,所以这么高的叶片转速对于直升机的空中飞行是很重要的。NASA也加装了加热机制,可使无人机在寒冷的火星之夜中得以存活。

After the rover lands, it will place the helicopter on the ground and retreat to a safe distance. Once the drone has charged its batteries using solar cells and run through some tests, the rover will relay commands to it from controllers on Earth. NASA hopes the helicopter will ascend to around 10 feet and hover there for around 30 seconds on its first flight. The agency will test the drone over a 30-day period and try up to four additional flights, eventually hoping to keep the helicopter in the air for as long as 90 seconds and let it roam for a few hundred meters.

在探测器着陆后,它会将直升机卸到地面,然后撤退到安全的距离。一旦无人机通过太阳能电池充好电并通过测试,探测车将传达地球上的控制器发送的指令。美国航空航天局希望这架直升机能升至10英尺高空,并在第一次飞行中停留30秒左右。美国航空航天局将在对无人机进行30天的测试,并另外进行4次飞行,最终让直升机能在空中停留长达90秒的时间,飞行数百米的距离。

来源:三泰虎 http://www.santaihu.com/44981.html

A successful test could open the door to using helicopters as scouts on future missions, surveying terrain that might be difficult for rovers to navigate and even accessing locations that are unreachable via ground travel.

测试若成功,可能会开启使用直升机执行未来任务的大门,测量那些对探测车来说难以探索的地形、接近探测者在地面无法到达的地点。

NASA's Jet Propulsion Laboratory has been developing the helicopter since 2013, and eventually shrunk the fuselage to around the size of a softball to help make the drone viable. The helicopter and rover are scheduled to launch in July 2020 and land on Mars seven months later.

自2013年以来,美国宇航局喷气推进实验室一直在研发这架直升机,最终将机身缩小到一个垒球大小。直升飞机和探测车计划于2020年7月发射,7个月后登陆火星。

美国雅虎读者的评论:

Dave

2 days ago

what happens when the drone is subjected to a high wind storm?

当无人机遭遇强风暴时,会发生什么?

 

DwightC

2 days ago

Does anyone know what the gravity is like on Mars?

有人知道火星上的重力是什么样的吗?

 

Linda Sutherland

2 days ago

Great idea - if it works. The lower gravity will help. But, as the article points out, the thin air is a disadvantage. Another problem might be the large amounts of very fine dust in the Martian environment. It's so fine it may tend to get inside things and that would be be bad news for rapidly rotating machinery

这主意不错——如果可行的话。低重力会有所帮助。但是,正如文章所指出的,稀薄的空气是个不利因素。另一个问题可能是火星环境中大量存在的细小尘埃。灰尘非常细小,很容易进入物体内部,这对于快速旋转的机器来说可不是好消息。

 

Big Hammer

2 days ago

We supposedly get transmission from a Rover 50 Million Miles away yet I cannot get Cell Service in-between Cities.

我们可以收到5000英里之外探测车传达的信息,但我居然在城市之间收不到手机信号!!

 

Wosai

2 days ago

I helped pay for that

我愿意出钱帮忙

 

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