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[任务跟踪] 机遇号火星车(MER-B Opportunity Rover):13岁生日

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Flying_Pencil 发表于 2017-4-23 21:37 | 显示全部楼层 |阅读模式

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开个帖子记录下老朋友机遇号的行程


机遇号火星车年满13岁了
2017-01-27 06:50:32 来源: cnbeta网站(台州) 举报
(原标题:机遇号火星车年满13岁了)
摘要:2017年1月24日,机遇号在火星庆祝了她的13岁生日,如果在地球上,按照人类的年龄,机遇号可以说步入了青少年。她已经在六个方面看起来像是一个青少年了。(PS:是她?没错,机遇号是个女孩子^_^)
机遇号火星车年满13岁了
一:机遇号现在更加独立,变成了一个了不起的登山运动员。原本设计攀登15度的山坡,现在可应付30度的火星斜坡。
二:她有时会熬夜与朋友奥德赛(Odyssey)和马文(Maven)聊天,他们是火星轨道探测器,负责在火星和地球之间传递信息。甚至有时通宵达旦地仰望火卫一福波斯(Phobos)和火卫二得摩斯(Deimos)。
三:机遇号喜爱分享,例如分享她在火星上拍摄到的照片。
四:不经常给家里打电话了,这并不是说她不想给家里通话,而是奋进陨石坑的边缘阻挡了机遇号的通讯路径。
五:接收了许多软件升级,机遇号变得更加聪明了,有时她觉得比地球上的团队聪明,并拒绝执行前往某地的指令,她的选择通常都是正确的。
六:机遇号总是那么好奇,她告诉我们火星上存在着水,可能有生命存在过。她的下一个目的地,可能是液态水冲刷形成的沟壑。
最后祝机遇号火星车13岁生日快乐,登陆火星那天(2004年1月24日),仿佛就在昨天,我们为你感到骄傲。
http://digi.163.com/17/0127/06/CBP46G0K001687H3.html
 楼主| Flying_Pencil 发表于 2017-4-23 21:39 | 显示全部楼层
“机遇号”火星车行驶穿越火星一个陡峭斜坡

腾讯太空2017年01月24日07:54我要分享
[摘要]目前,火星“机遇号”探测器穿越一个陡坡,试图揭晓火星表面更多的秘密。

“机遇号”火星车行驶穿越火星一个陡峭斜坡
美国宇航局机遇号火星车已在火星表面行驶43.79公里
腾讯太空讯 据火星日报网站报道,目前,“机遇号”火星车正位于奋进陨坑边缘,沿着陨坑边缘向南行驶,该火星车试着朝向下一步重大科学目标前进——当前位置向南1千米处的一个沟壑。
然而目前机遇号火星车存在一个挑战,需要翻越一个20度的陡坡,在车轮前行剪力作用下土壤较为松散。1月12日,该火星车尝试翻越一个陡坡,但是当它行进1.25米,火星车软件系统阻止其运行,探测到车轮运行需要较多的电量,很可能存在陷入火星土壤的迹象。
行驶影像显示,机遇号火星车所处的表面土壤层破碎,并导致车轮滑动,此次行驶是三次行驶计划的一部分,其中包括:深夜火星大气与挥发演化任务(MAVEN)超高频中继传输。
下一次行驶任务没有中继数据需要传输,因为奥德赛轨道器低空飞行勘测数据并不理想。1月15日,机遇号火星车再次执行行驶任务,向后倒退了大约0.5米,之后向左转穿行更多的横坡,这些坡面暴露出了岩石结构。
此次,机遇号火星车成功地完成了14.67米的指令行驶。据悉,每次机遇号火星执行行驶任务,都将采集大量图像,更好地完成行驶和科研计划。
自1月16日起,机遇号火星车太阳能电池板可产生500瓦每小时的发电量,据悉,该火星车可能总计行驶了43.79公里。(悠悠/编译)
http://tech.qq.com/a/20170124/004452.htm?pgv_ref=aio2015&ptlang=2052
 楼主| Flying_Pencil 发表于 2017-4-23 21:40 | 显示全部楼层
第4707个火星天,山脊上的机遇号轨迹
Jason Major‏
@JPMajor
Approximate true-color panorama mosaic from @NASAJPL's Opportunity rover on April 21, 2017 (Sol 4707). Note the rover's tracks up the ridge.

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 楼主| Flying_Pencil 发表于 2017-4-23 21:57 | 显示全部楼层
4月19日,机遇号将离开Cape Tribulation,前往下一个目的地Perseverance Valley
NEWS | APRIL 19, 2017
NASA's Mars Rover Opportunity Leaves 'Tribulation'

NASA's senior Mars rover, Opportunity, is departing "Cape Tribulation," a crater-rim segment it has explored since late 2014, southbound for its next destination, "Perseverance Valley."

The rover team plans observations in the valley to determine what type of fluid activity carved it billions of years ago: water, wind, or flowing debris lubricated by water.


A color panorama of a ridge called "Rocheport" provides both a parting souvenir of Cape Tribulation and also possible help for understanding the valley ahead. The view was assembled from multiple images taken by Opportunity's panoramic camera.

"The degree of erosion at Rocheport is fascinating," said Opportunity Deputy Principal Investigator Ray Arvidson, of Washington University in St. Louis. "Grooves run perpendicular to the crest line. They may have been carved by water or ice or wind. We want to see as many features like this on the way to Perseverance Valley as we can, for comparison with what we find there."

Perseverance Valley is about two football fields long. It cuts downward west to east across the western rim of Endeavour Crater. The crater is about 14 miles (22 kilometers) in diameter, with a segmented rim that exposes the oldest rocks ever investigated in place on Mars. Opportunity has less than four football fields' distance of driving to reach the top of the valley after departing Cape Tribulation, a raised segment about 3 miles (5 kilometers) long on the crater's western rim.

In 68 months since reaching Endeavour Crater, Opportunity has explored "Cape York," "Solander Point" and "Murray Ridge" before reaching Cape Tribulation about 30 months ago. "Cape Byron," the next raised segment to the south, contains Perseverance Valley and is separated from Tribulation by a gap of flatter ground.

Five drives totaling about 320 feet (98 meters) since the beginning of April have brought Opportunity to a boundary area where Cape Tribulation meets the plain surrounding the crater.

Cape Tribulation has been the site of significant events in the mission. There, in 2015, Opportunity surpassed a marathon-race distance of total driving since its 2004 landing on Mars. It climbed to the highest-elevation viewpoint it has reached on Endeavour's rim. In a region of Tribulation called "Marathon Valley," it investigated outcrops containing clay minerals that had been detected from orbit. There were some name-appropriate Tribulation experiences, as well. The rover team has coped with loss of reliability in Opportunity's non-volatile "flash" memory since 2015. With flash memory unavailable, each day's observations are lost if not radioed homeward the same day.

"From the Cape Tribulation departure point, we'll make a beeline to the head of Perseverance Valley, then turn left and drive down the full length of the valley, if we can," Arvidson said. "It's what you would do if you were an astronaut arriving at a feature like this: Start at the top, looking at the source material, then proceed down the valley, looking at deposits along the way and at the bottom."

Clues to how the valley was carved could come from the arrangement of different sizes of rocks and gravel in the deposits.

He said, "If it was a debris flow, initiated by a little water, with lots of rocks moving downhill, it should be a jumbled mess. If it was a river cutting a channel, we may see gravel bars, crossbedding, and what's called a 'fining upward' pattern of sediments, with coarsest rocks at the bottom." Another pattern that could be evidence of flowing water would be if elongated pieces of gravel in a deposited bed tend to be stacked leaning in the same direction, providing a record of the downstream flow direction.

Now more than 13 years into a mission originally scheduled to last three months on Mars, Opportunity remains unexpectedly capable of continued exploration. It has driven about four-tenths of a mile (two-thirds of a kilometer) since the start of 2017, bringing the total traverse so far to 27.6 miles (44.4 kilometers). The current season on Mars is past the period when global dust storms might arise and curtail Opportunity's solar power.

Opportunity and the next-generation Mars rover, Curiosity, as well as three active NASA Mars orbiters, and surface missions to launch in 2018 and 2020 are all part of a legacy of robotic exploration which is helping to lay the groundwork for sending humans there in the 2030s. NASA's Jet Propulsion Laboratory, a division of Caltech in Pasadena, California, built Opportunity and manages the mission for NASA's Science Mission Directorate, Washington. For more information about Opportunity, visit:

http://www.nasa.gov/rovers

http://marsrovers.jpl.nasa.gov

https://www.jpl.nasa.gov/news/news.php?feature=6819
topzdx 发表于 2017-4-24 09:00 | 显示全部楼层
总感觉火星车的轮子设计时越野性能考虑的不足,对松软地面的压强过大......
zhupingwswswws 发表于 2017-4-24 11:18 | 显示全部楼层
啥?这货现在还能用?太厉害了吧,不得不佩服,当时设计使用多久啊?
 楼主| Flying_Pencil 发表于 2017-4-24 17:59 来自航空航天港手机版! | 显示全部楼层
zhupingwswswws 发表于 2017-4-24 11:18
啥?这货现在还能用?太厉害了吧,不得不佩服,当时设计使用多久啊?

设计寿命90个火星日
 楼主| Flying_Pencil 发表于 2017-4-25 11:04 | 显示全部楼层
第4710个火星日
Mike Seibert‏ @mikeseibert  3小时3小时前
更多
Looking back at the tracks on Sol 4710

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zhupingwswswws 发表于 2017-4-25 13:31 | 显示全部楼层
Flying_Pencil 发表于 2017-4-24 17:59
设计寿命90个火星日

质量太好了吧,超期服役这么久,而且是在火星上,环境要比月球恶劣吧?
zhupingwswswws 发表于 2017-4-25 13:33 | 显示全部楼层
能够说说咱们的玉兔弱在哪里吗?感觉挺尴尬的
陈昕海 发表于 2017-4-25 14:40 | 显示全部楼层
zhupingwswswws 发表于 2017-4-25 13:33
能够说说咱们的玉兔弱在哪里吗?感觉挺尴尬的

月尘进入机构,将电路烧坏。我国玉兔采用集成化设计,小巧,没有用备份系统。当时用的是美国的资料,但着陆地在虹湾,对着陆周围环境判断有失误导致设计出现偏差。
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