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[专题专项] 美国星际探测器的最新进展、规划:彗星取样返回和泰坦直升机项目入选New Frontiers 4

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hkhtg090201 发表于 2017-5-8 15:25 | 显示全部楼层
hkhtg090201 发表于 2016-12-15 10:30
NASA发布第四次“新边疆”任务机会公告

新闻发布时间:2016-12-14

脚步不能停!美航天局开始评估下一个太阳系探索任务
2017年05月06日  新华网

... ...
NASA....5日发表声明宣布,目前已收到12个下一步太阳系探索提案,将在接下来7个月里进行科学和技术评估,11月公布入选第一阶段概念性研究的一个或多个方案,其中一个方案将在2019年被挑中进入研制阶段,其目标是21世纪20年代中期发射一枚探测器探索太阳系内的新目标,
... ...


http://tech.sina.com.cn/d/s/2017-05-06/doc-ifyeycte8911465.shtml

Lsquirrel 发表于 2017-8-11 22:25 | 显示全部楼层
最新的出来了:
http://www.planetary.org/blogs/guest-blogs/van-kane/20170810-new-frontiers-missions.html
12个竞标,其中就有月升Moonrise,如果它入选而嫦娥五号再拖延,月球背面取样的嫦娥六号恐怕就要晚了
DF21 发表于 2017-8-12 18:46 | 显示全部楼层
Lsquirrel 发表于 2017-8-11 22:25
最新的出来了:
http://www.planetary.org/blogs/guest-blogs/van-kane/20170810-new-frontiers-missions. ...

居然没有天王星或者海王星的入轨项目...
DF21 发表于 2017-8-12 18:49 | 显示全部楼层
StdNormDist 发表于 2017-1-5 16:13
从L4到L5的飞行轨迹该怎么理解?确实要飞到地球轨道附近?

飞回地球轨道附近进行一次引力弹弓
cmj9808 发表于 2017-8-12 18:52 | 显示全部楼层
DF21 发表于 2017-8-12 18:46
居然没有天王星或者海王星的入轨项目...

那得是flagship级的,New Frontiers是中型任务。
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Lsquirrel 发表于 2017-8-21 15:21 | 显示全部楼层
蒸汽朋克在金星:
https://www.nasa.gov/sites/default/files/atoms/files/niac_2016_phasei_saunder_aree_tagged.pdf

转帖的翻译:
金星的大气环境太过恶劣,漫游车如果用传统的电路,肯定抗不住高酸大气,加州理工学院的人考虑用一些非电子的方法来实现计算机功能,简单摘要如下

1,用连杆实现二进制功能(或门/非门),但是大规模的机械二进制回路会搞得很复杂,如果搞成微机电(MEMS)比较方便实现,但抗恶劣环境能力和普通数字计算机并无区别。数位滚轮之类的东西更为现实一些,模拟计算机则是极好的,几十年前射击盘就很成熟了
2,气动/液压之类的东西很适合用来在机械各组件之间传输信号,甚至可以搭出一个简单的8位二进制处理器。
3,真空管也是极好的,但是玻璃瓶有可能会被大气渗透让真空管变得不真空,可以考虑做一个钛合金盒子包起来,就像当年俄国人那样。还有提到的一点是,可以考虑用压电材质来做开关。
4,数据存储和计算类似,用数位滚轮比暴力记录二进制更现实。也有人考虑用Physical Depression(物理衰变?)的方法来记录数据
5,动力用风车获取,用弹簧(也就是发条)存储
6,漫游车碰到障碍时,先用探测杆给传动系统插一个反向齿轮,然后用凸轮计数,时间到了就恢复正向传动
7,转弯时两侧轮子之间的转速差可以用来提供纠正方向的依据,从而保持行进方向,实现“惯性导航”
8,回传数据
     a,释放氢气球,让轨道无人机捕获
     b,用耐操的真空管
     c,在漫游车上放一个雷达信标(就是龙伯透镜之类的东西),让轨道器的雷达可以容易捕获目标,然后用一个快门机构动态遮蔽信标,这样雷达回波也会随之改变,这样轨道器就能从回波中接收到数据。
catx 发表于 2017-8-21 16:31 | 显示全部楼层
Lsquirrel 发表于 2017-8-21 15:21
蒸汽朋克在金星:
https://www.nasa.gov/sites/default/files/atoms/files/niac_2016_phasei_saunder_aree ...

Physical Depression是指物理凹陷/凹痕,比如黑胶唱片。这篇report里说的是millipede memory,在聚合物表面烧出纳米级的凹槽,存储密度可达1G/mm^2:
https://en.wikipedia.org/wiki/Millipede_memory
http://www.ewp.rpi.edu/hartford/~walshc2/FWM/Research%20Project/Final/IBM%27s%20Millipede.pdf
http://www.worldairco.org/IJCCIT/April2015Paper14.pdf
cmj9808 发表于 2017-8-21 17:11 | 显示全部楼层
这是连蒸汽都没有的机械朋克
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DF21 发表于 2017-8-21 21:12 | 显示全部楼层
Lsquirrel 发表于 2017-8-21 15:21
蒸汽朋克在金星:
https://www.nasa.gov/sites/default/files/atoms/files/niac_2016_phasei_saunder_aree ...

一股机械朋克的风格
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DF21 发表于 2017-8-21 21:30 | 显示全部楼层
cmj9808 发表于 2017-1-5 15:46
Lucy/Discovery-13的任务剖面,飞掠目标包括L4的四颗小行星和L5的一对双星

从L4到L5的转移这么快,才五年?都要飞回地球轨道附近再飞过去了
Lsquirrel 发表于 2017-9-23 18:57 | 显示全部楼层
https://www.nasa.gov/feature/nasa-jaxa-reaffirm-cooperation-in-space-exploration
Sept. 21, 2017
NASA, JAXA Reaffirm Cooperation in Space Exploration

NASA and the Japan Aerospace Exploration Agency (JAXA) will work together on three groundbreaking science missions to explore the moons of Mars, further study the atmosphere of the Sun, and research dark matter and the evolution of the universe.

In a Sept. 21 (ET) press conference at JAXA Headquarters, NASA reaffirmed that it will continue to strive for breakthrough science discoveries by cooperating with JAXA on Martian Moons Exploration (MMX), the Chromospheric Lyman-Alpha Spectro-Polarimeter experiment (CLASP-2), and the new X-ray Astronomy Recovery Mission (XARM).

“From its inception, NASA’s mission to unravel the secrets of the universe has included efforts to engage in international partnerships,” said Thomas Zurbuchen, associate administrator of NASA’s Science Mission Directorate in Washington. “Today we reaffirm a cooperative endeavor that stretches back nearly six decades and spans across disciplines that include Earth science, human spaceflight, interplanetary probes and astronomy.”

At an earlier meeting at JAXA’s Institute for Space and Astronautical Sciences (ISAS) in Sagamihara, Kanagawa, Zurbuchen agreed to explore options for NASA’s contribution to the MMX mission, such as a neutron and gamma-ray spectrometer. Scheduled to launch in the early 2020s, this JAXA-led mission will orbit Mars and visit its moons Phobos and Deimos to take remote sensing and in-situ observations of both moons, returning a sample from Phobos. The goal of the mission is to reveal the origin of the Martian moons and to further understanding of solar system formation.

In the field of solar physics, both agencies plan to cooperate on a follow-on mission to the Chromospheric Lyman-Alpha Spectro-Polarimeter, or CLASP experiment, which obtained observations during its launch on a sounding rocket in 2015. CLASP-2, led by NASA’s Marshall Space Flight Center in Huntsville, Alabama, will build on the success of its predecessor and study the magnetic field in the chromosphere and transition region of the Sun's atmosphere. The experiment is planned to be an international effort, with contributions from the U.S., Japan, Spain and France. Japan plans to provide internal structure and optics for the instrument.

Both agencies also will work toward a new X-ray Astronomy Recovery Mission (XARM), with NASA’s Soft X-ray Spectroscopy onboard. This NASA-JAXA collaborative mission – with European Space Agency (ESA) participation – will investigate the structure and formation of the universe using high-resolution spectroscopy. XARM would replace the Hitomi X-ray spectrometry spacecraft, which launched in February of 2016 but malfunctioned weeks later. XARM is designed to provide breakthrough results in scientific areas as diverse as the large-scale structure of the Universe and its evolution, the behavior of matter in the gravitational strong field regime, the physical conditions in sites of cosmic-ray acceleration, and the distribution of dark matter in galaxy clusters.

NASA and JAXA will continue to cooperate on the Venus Climate Orbiter Akatsuki, as well as on the Hisaki (SPRINT-A) ultraviolet astronomy satellite, with plans to analyze the scientific data obtained. The agencies also reaffirmed their intent to exchange specimens from the OSIRIS-REx and Hayabusa 2 asteroid sample return missions, a plan codified in a NASA-JAXA Memorandum of Understanding signed in 2014.  

“Space exploration is a team sport and an opportunity to advance international cooperation to benefit all of humankind,” said Zurbuchen. “While these missions promise a strong platform for partnership in the next decade, we will continue to exchange information and explore opportunities further on the horizon to explore the solar system and beyond.”
Last Updated: Sept. 22, 2017
Editor: Tricia Talbert
喵科动物 发表于 2017-9-23 20:23 来自航空航天港手机版! | 显示全部楼层
Lsquirrel 发表于 2017-8-21 15:21
蒸汽朋克在金星:
https://www.nasa.gov/sites/default/files/atoms/files/niac_2016_phasei_saunder_aree ...

最新的碳化硅半导体器件工作温度达到650摄氏度,用不着蒸汽朋克了。
https://sic.grc.nasa.gov
烧红的芯片发着蓝光
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cmj9808 发表于 2017-12-19 12:45 | 显示全部楼层
NASA将于北京时间周四凌晨2点公布New Frontier-4的中标者。
中标者将来自于下述6个方向:
    Comet Surface Sample Return
    Lunar South Pole-Aitken Basin Sample Return
    Ocean Worlds (Titan and/or Enceladus)
    Saturn Probe
    Trojan Tour and Rendezvous
    Venus In Situ Explorer
NASA will announce finalist concepts for a future robotic mission to explore the solar system during a media teleconference at 2 p.m. EST Wednesday, Dec. 20.

The mission, targeted to launch in the mid-2020s, would be the fourth in NASA’s New Frontiers portfolio – a series of cost-capped missions led by a principal investigator. Current New Frontiers missions are New Horizons to Pluto and the Kuiper Belt, Juno at Jupiter, and the OSIRIS-REx asteroid sample return mission, now heading to the asteroid Bennu for arrival in 2018.
https://www.nasa.gov/press-release/nasa-to-name-finalists-for-future-solar-system-mission
hkhtg090201 发表于 2017-12-21 10:14 | 显示全部楼层
cmj9808 发表于 2017-12-19 12:45
NASA将于北京时间周四凌晨2点公布New Frontier-4的中标者。
中标者将来自于下述6个方向:
    Comet Surf ...

六选二,慧星取样;旋翼飞行器土卫6(泰坦)着陆,2025左右发射。

http://www.parabolicarc.com/2017 ... -saturn-moon-titan/
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hdcscience2012 发表于 2017-12-21 10:28 | 显示全部楼层
中国要加油啊!!!CAESAR (Comet Astrobiology Exploration SAmple Return) mission

Dragonfly

https://www.nasa.gov/press-release/nasa-invests-in-concept-development-for-missions-to-comet-saturn-moon-titan

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cmj9808 发表于 2017-12-21 11:00 | 显示全部楼层
彗星取样返回任务CAESAR由JPL抓总,返回舱采用隼鸟的方案,由JAXA提供。泰坦直升机Dragonfly(蜻蜓)则由APL抓总,不得不说APL的方案总是这样别(脑)出(洞)心(大)裁(开)。

New Frontiers 4将从上述两个任务中选出,落选的一个将成为NF-5的强有力候选。此外土卫二和金星的方案也获得了资金支持以帮助其方案进一步成熟。

PS:月球阿提肯盆地取样方案再次一无所获,从NF-1一直陪跑到NF-4
https://www.nasa.gov/press-release/nasa-invests-in-concept-development-for-missions-to-comet-saturn-moon-titan/
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爆破鬼才太空X 发表于 2017-12-21 21:07 | 显示全部楼层
hdcscience2012 发表于 2017-12-21 10:28
中国要加油啊!!!CAESAR (Comet Astrobiology Exploration SAmple Return) mission

Dragonfly

Dragonfly漂亮啊
DF21 发表于 2017-12-23 07:23 | 显示全部楼层
hkhtg090201 发表于 2017-12-21 10:14
六选二,慧星取样;旋翼飞行器土卫6(泰坦)着陆,2025左右发射。

http://www.parabolicarc.com/2017 ... ...

月球南极取样方案真是惨,一次次被搁置
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Lsquirrel 发表于 2018-4-28 16:30 | 显示全部楼层
https://www.space.com/40431-nasa-cancels-moon-mission-resource-prospector.html
NASA Kills Lunar-Resources Mission Despite Push to Return to the Moon

Resource Prospector项目要完了,美国现在唯一的月球探测项目
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