s*****t
发帖数: 1994 | 1 In the shadow of Saturn, unexpected wonders appear. The robotic Cassini
spacecraft now orbiting Saturn drifted in giant planet's shadow for about 12
hours in 2006 and looked back toward the eclipsed Sun. Cassini saw a view
unlike any other. First, the night side of Saturn is seen to be partly lit
by light reflected from its own majestic ring system. Next, the rings
themselves appear dark when silhouetted against Saturn, but quite bright
when viewed away from Saturn, slightly scattering sunlight,... 阅读全帖 |
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Z**R
发帖数: 1233 | 4 By Paul Rincon
Science reporter, BBC News
China will launch its third manned space mission in late September, state-
run news agency Xinhua reports.
The Shenzhou VII flight will feature China's first ever space walk, which
will be broadcast live with cameras inside and outside the spacecraft.
Three "yuhangyuan" (astronauts) will blast off on a Long-March II-F rocket
sometime between 25 and 30 September.
Previous reports in state media had put the launch in October, possibly
during the National D |
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Z**R
发帖数: 1233 | 5 中国的不知道
外国的有这个:
Starsem Soyuz
October 12, 2008
3:01 a.m. EDT
(0701 GMT)
A Soyuz rocket carrying a Soyuz TMA-13 spacecraft and the 18th ISS crew to
launch from Baikonur Cosmodrome, Kazakhstan. |
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Z**R
发帖数: 1233 | 6 又一个太空游客。。。
For 4:40 p.m. EDT Wednesday, October 1:
Two professional astronauts and an American space tourist are poised to
launch toward the International Space Station (ISS) on Oct. 12.
Expedition 18 commander Mike Fincke of NASA will command the new crew, which
includes Russian cosmonaut Yuri Lonchakov and U.S. computer game developer
Richard Garriott, who is the son of former NASA astronaut Owen Garriott. The
trio are due to launch spaceward aboard their Soyuz TMA-13 spacecraft from
the Centr |
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Z**R
发帖数: 1233 | 7 Nasa's Interstellar Boundary Explorer (Ibex) spacecraft has been launched
into Earth orbit to study the edge of our Solar System.
Ibex was launched on Sunday aboard a Pegasus rocket that was dropped from a
jet flying over the Pacific Ocean.
It is the first probe to study particle interactions at the boundary where
our Solar System meets interstellar space.
The two-year mission should shed light on the decline of the solar wind,
which is at its lowest pressure in 50 years.
The interstellar bounda |
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Z**R
发帖数: 1233 | 8 By Paul Rincon
Science reporter, BBC News
India is counting down to the launch of its first mission to the Moon.
On Wednesday, the unmanned Chandrayaan 1 spacecraft will blast off from a
launch pad in Andhra Pradesh to embark on a two-year mission of exploration.
The robotic probe will orbit the Moon, compiling a 3-D atlas of the lunar
surface and mapping the distribution of elements and minerals.
The launch is regarded as a major step for India as it seeks to keep pace
with other space-faring |
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Z**R
发帖数: 1233 | 9 By Andrea Thompson
Senior Writer
posted: 08 October 2008
06:55 am ET
After more than four months on the arctic plains of the red planet, NASA's
Phoenix Mars Lander's days are finally numbered.As the sun begins to set for
the frigid Martian winter, the spacecraft will lose its energy supply,
freeze and eventually fall into a mechanical coma from which it will likely
never wake up.
Phoenix's mission has been to dig up samples of Martian dirt and the
subsurface layer of rock-hard water ice at its l |
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s*****r
发帖数: 469 | 10 Chandrayaan-1 was successfully raised to its fourth orbit this morning
around
7.30. “Everything went on as planned,” M. Annadurai, Project Director of
Chandrayaan-1 said.
The spacecraft was raised to the predetermined apogee of 2,67,000 km. And
thus
it has overcome the shortfall of 35,000 km apogee in the third orbit.
6天后第五次变轨。
http://www.khabrein.info/index.php?
option=com_content&task=view&id=18139&Itemid=62 |
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t*n
发帖数: 14458 | 11 有惊无险
Chandrayaan-1 was successfully raised to its fourth orbit this morning
around
7.30. “Everything went on as planned,” M. Annadurai, Project Director of
Chandrayaan-1 said.
The spacecraft was raised to the predetermined apogee of 2,67,000 km. And
thus
it has overcome the shortfall of 35,000 km apogee in the third orbit.
6天后第五次变轨。
http://www.khabrein.info/index.php?
option=com_content&task=view&id=18139&Itemid=62 |
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a*******r
发帖数: 7558 | 12 不错嘛
看来印度自己出产黑白胶卷了
successfully operated on
October 29, 2008 through a series of commands issued from the Spacecraft
Control Centre of ISRO
Telemetry, Tracking and Command Network (ISTRAC) at Bangalore. Analysis of
the first imagery
received by the Indian Deep Space Network (IDSN) at Byalalu and later
processed by Indian Space
Science Data Centre (ISSDC) confirms excellent performance of the camera.The
first imagery (image 1)
taken at 8:00 am : IST from a height of 9,000 km shows the Northern co |
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Z**R
发帖数: 1233 | 13 http://news.bbc.co.uk/1/hi/world/south_asia/8155120.stm
India's first mission to the Moon has experienced a technical problem, India
's space research officials say.
A sensor of the unmanned Chandrayaan-1 spacecraft has "malfunctioned" and
steps have been taken to ensure it is able to continue its work, they say.
But the possibility remains that the mission may have to be cut short.
Chandrayaan-1 was launched last October and is regarded as a major step for
India as it seeks to keep pace with ot |
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Z**R
发帖数: 1233 | 14 【 以下文字转载自 Military 讨论区 】
发信人: ZZGR (闲逛), 信区: Military
标 题: 【BBC】Europe looks to buy Soyuz craft
发信站: BBS 未名空间站 (Fri Aug 28 13:07:09 2009, 美东)
Europe is seeking to maintain flight opportunities for its astronauts by
buying Soyuz spacecraft from Russia.
The European Space Agency (Esa) has asked Moscow if it is possible to
increase the production of the craft from four to five a year.
Esa could then buy its own vehicle, perhaps with the Canadians who are also
looking for more seat opportunities.
T |
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Z**R
发帖数: 1233 | 15 By Tariq Malik
Managing Editor
posted: 04 September 2009
11:18 am ET
This story was updated at 11:49 a.m. EDT.
The derelict remains of an old European rocket zipped close by the
International Space Station and shuttle Discovery Friday, but not close
enough to pose a risk to the spacecraft or their astronaut crews.
At its closest approach, the space trash was less than a mile (1.3 km) from
the space station - about a mile closer than previously reported - as it
passed from left to right ahead of |
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Z**R
发帖数: 1233 | 16 Troubled Asteroid Mission Stumbles on Road Home
By Stephen Clark
posted: 10 November 2009
12:45 pm ET
Hopes are fading for the return of the Hayabusa space probe after another of
its ion thrusters failed last week, leaving just one already-damaged engine
to guide the hard-luck spacecraft back to Earth, potentially with the first
precious samples of an asteroid.
Hayabusa's four experimental microwave discharge ion engines consume xenon
gas and expel the ionized propellant at high speeds to produc |
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d*********e
发帖数: 3835 | 17 The National Transportation Safety Board, which probes plane, train, ship
and highway crashes, wants to expand its purview to cover commercial
spacecraft mishaps and accidents.
This week, the safety board for the first time asked Congress to explicitly
give it primary investigative authority over accidents involving commercial
space vehicles. As part of the request submitted to the House Transportation
subcommittee on aviation, Deborah Hersman, the board's chairman, also
reiterated that lawmaker |
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Z**R
发帖数: 1233 | 18 http://www.bbc.co.uk/news/science-environment-11936711
A US capsule that could soon be hauling cargo and even astronauts to the
space station is set to make its first demonstration flight on Wednesday.
The Dragon ship will be launched from Florida on a Falcon 9 rocket, with the
aim of entering a circular orbit some 300km above the planet.
After completing a number of manoeuvres in space, the capsule will then
target a splashdown in the Pacific.
Dragon and Falcon 9 are both products of California... 阅读全帖 |
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d*********e
发帖数: 3835 | 19 My Client has an immediate need for an aerospace stress engineer with
experience in composite vehicle design, stress analysis, composite repairs,
and production manufacturing. The first task of this role will be to review
stress reports and finite element models developed by partner organization
to determine revised margins based on updated vehicle weights and design
modifications. The stress engineer will also compile analysis, reports,
models, and margins into standardized formats for upload i... 阅读全帖 |
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d*********e
发帖数: 3835 | 20 - To apply send resume to Doug at D***[email protected] -
Our Client has been an industry leader in motion control systems and
components for commercial and military aircraft, helicopters, missiles,
spacecraft, marine craft and ground vehicles since 1933. Their line of
products are widely used throughout the world. Applications include primary,
secondary and other control actuators; fuel and pneumatic systems; gun
stabilization and fire control systems; and automated test and diagnostic
syste... 阅读全帖 |
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w********h
发帖数: 12367 | 22 Date: Feb. 6, 2014
FOR IMMEDIATE RELEASE
National Academy of Engineering Elects 67 Members and 11 Foreign Associates
WASHINGTON — The National Academy of Engineering (NAE) has elected 67 new
members and 11 foreign associates, announced NAE President C.D. (Dan) Mote
Jr. today. This brings the total U.S. membership to 2,250 and the number of
foreign associates to 214.
Election to the National Academy of Engineering is among the highest
professional distinctions accorded to an engineer. Academy m... 阅读全帖 |
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w********h
发帖数: 12367 | 23 Date: Feb. 6, 2014
FOR IMMEDIATE RELEASE
National Academy of Engineering Elects 67 Members and 11 Foreign Associates
WASHINGTON — The National Academy of Engineering (NAE) has elected 67 new
members and 11 foreign associates, announced NAE President C.D. (Dan) Mote
Jr. today. This brings the total U.S. membership to 2,250 and the number of
foreign associates to 214.
Election to the National Academy of Engineering is among the highest
professional distinctions accorded to an engineer. Academy m... 阅读全帖 |
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u****d
发帖数: 122 | 24 主要做推进器设计方面，xiaoyao兄等在Aerospace领域的说说看呢？ |
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W***n
发帖数: 11530 | 28
Plasma propulsion sounds interesting... |
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i*****t
发帖数: 24265 | 29 美国技术已经成熟，还研究啥？估计中国技术也不错了。 |
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a****l
发帖数: 8211 | 30 I believe you will be very welcomed after you go back to China. |
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c******4
发帖数: 4896 | 31 我一直想知道这个激光推进到底发张到啥地步了？
有没有内部人士透露一下？ |
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t********i
发帖数: 144 | 33 1) Condition Monitoring and Health Management. This research endeavors to
develop advanced techniques to improve the system diagnostic and prognostic
reliability in various safety-critical applications, e.g., aircrafts, power
plants, chemical plants, in various cost-critical applications, e.g.,
spacecraft, offshore wind turbines, and in various volume-critical
applications, e.g., automotive assembly lines, and large manufacturing
facilities.
2) Mechatronics and Intelligent Control. This researc... 阅读全帖 |
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发帖数: 1 | 34 大家好，本人是今年5月要从Lehigh University毕业的ME硕士，主要是design方向。找了
两个多月工作，一直在linkedin/glassdoor/indeed/monster上面海投，也快三四
百份了，有过几个面试，然后也还是没找到工作。希望求助大家看有没有什么机会。
主要做的是机械设计制造，原来本科的时候设计过磨床，2012年的时候在国内一
家做电声产品的厂里实习两个月，主要也是画画AutoCAD图，操作一下自动装机组。
2015年暑假在上海上汽做过intern，主要是汽车白车身的工艺工装设计，用到CATIA。
来美国以
后在学校用SolidWorks设计过spacecraft，SolidWorks/AutoCAD/ProE/UG都比较熟。所
以还算有一些hands-on experience。
也做过一些simulation的项目，比如用FEA模拟汽车车门的应力分析，还
有简单的beam，2D结构的FEA压力和温度分析。Matlab平时经常会用，Autodesk
Simulation Mechanical 在FEA课程上经常用。
现在美国的任何地方都愿意relo... 阅读全帖 |
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s******1
发帖数: 239 | 35 好像国内媒体没有报道，到是个大事。
一手唱和平（建构主义？）；一手磨宝剑（现实主义？），本来是任何大国外交的基本
特征。面对美国的军事独大的局面，看来中国其实一直没打算走“自废武功”的道路。
就要看近期中国外交怎么化解。
China successfully carried out its first test of an antisatellite weapon
last week, signaling its resolve to play a major role in military space
activities and bringing expressions of concern from Washington and other
capitals, the Bush administration said yesterday.
Only two nations — the Soviet Union and the United States — have
previously destroyed spacecraft in antisatellite tests, |
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c**c
发帖数: 2593 | 36 【 以下文字转载自 SciFiction 讨论区 】
【 原文由 calc 所发表 】
'Faster, better, cheaper' has roots in another Mars loss
December 8, 1999
Web posted at: 11:45 a.m. EST (1645 GMT)
(AP) -- NASA's policy of
exploring the solar system with
less expensive, more frequent
missions stems from the loss of
the $1 billion Mars Observer in
1993 and budget cuts imposed by
Congress.
In the 1970s and '80s, mission
planners normally spent a decade
or more loading down giant spacecraft with every scientific
instrument that could be |
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b****d
发帖数: 30 | 37
don't know about astrophysics... and I don't trust it, hehe.
a universe with increasing mass/energy is clearly out of current physics sense
ok, design one, let us see see.
I don't understand this part. a spacecraft won't get extra kinetic energy
this way. |
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l**********n
发帖数: 72 | 38 摘自JPL主页
CLOUDS DANCE IN JUPITER
Two short movie clips of Jupiter based on images
taken
by NASA's Cassini spacecraft show dynamic clouds in action
on
the giant planet.
One clip, from Cassini images taken at uneven time
intervals over a five-day period in October, catches winds
swirling counterclockwise around Jupiter's Great Red Spot.
Dark and light bands that form horizontal stripes around the
planet can be seen rushing in opposite directions to each
other.
The other clip shows the |
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l**********n
发帖数: 72 | 39 Shenzhou is much closer in capability to the U.S. and former Soviet Union's
second-generation spacecraft, Gemini and the Soyuz, respectively.
In particular, it can carry a crew of at least two, and more importantly, has
maneuvering and rendezvous capabilities.
The key thing to demonstrate on this mission is the life support system. Also,
there will be a lot of testing of onboard systems, as well as some baseline
medical experiments to study how the astronauts adapt to free-fall.
The spaceship wi |
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t***e
发帖数: 291 | 40 support.
I am im charge of airplane, rockets, spacecraft, TMD, MMD, NND... |
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f**d
发帖数: 768 | 41 这是一本计算神经科学的优秀著作，全文拷贝这里（图和公式缺），有兴趣的同学可以
阅读
如需要，我可以分享PDF文件（－－仅供个人学习，无商业用途）
From Computer to Brain
William W. Lytton
From Computer to Brain
Foundations of Computational Neuroscience
Springer
William W. Lytton, M.D.
Associate Professor, State University of New York, Downstato, Brooklyn, NY
Visiting Associate Professor, University of Wisconsin, Madison
Visiting Associate Professor, Polytechnic University, Brooklyn, NY
Staff Neurologist., Kings County Hospital, Brooklyn, NY
In From Computer to Brain: ... 阅读全帖 |
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p*********e
发帖数: 32207 | 42 蒸汽机提供了first artifical source of power
但实际上工业生产在那之前也在进行,利用水力
我觉得下面这一段JFK的著名的"moon talk"中总结的历史上的进步很有代表性:
"
No man can fully grasp how far and how fast we have come, but condense, if
you will, the 50,000 years of man1s recorded history in a time span of but a
half-century. Stated in these terms, we know very little about the first 40
years, except at the end of them advanced man had learned to use the skins
of animals to cover them. Then about 10 years ago, under this standard, man
emerged from his... 阅读全帖 |
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w*******y
发帖数: 60932 | 43 Just for today (Christmas) there's a skate/snowboard shop in Denver that's
offering 25% off their entire online store.
Link:
http://emagenetwork.com/
Free shipping on orders over $99.95 - tax really eats into this deal for me
but even with an effective 17.5% off it's a great deal.
This is hot for a few reasons in particular. They carry several brands that
rarely go on sale. I'm thinking of Never Summer in particular. Never Summer
gear sells out every year well before any sales; and it's typicall... 阅读全帖 |
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s******o
发帖数: 298 | 44 March 15, 2002 | During the mid-1970s, fortuitous geometry allowed Mariner 10
to zip by Mercury three times in a 12-month period. But that same geometry
precluded the spacecraft from seeing almost half of the innermost planet's
surface — a "terra incognita" that remains virtually unknown nearly three
decades later.
However, as radar facilities on Earth continue to probe the unseen territory
with ever-improving resolution, Mercury is slowly giving up its secrets.
Several days of observations made |
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s******o
发帖数: 298 | 45 April 22, 2002 | Scientific intuition tells us that a comet's nucleus should
be a frozen mountain of ice and dust. But that's not what Deep Space 1
discovered when it flew past Comet 19P/Borrelly last year. A recently released
analysis of spacecraft spectra finds that Borrelly's "icy heart" exhibits no
trace of water ice or any water-bearing minerals. Moreover, the nucleus is
actually quite hot — ranging from 300° to 345° Kelvin (80° to 160° F).
What this means, according to Laurence Soderblom ( |
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s******o
发帖数: 298 | 46 Like most people at work, physicist Tom Parker watches the clock. But unlike
most people, it's Parker's job. He keeps an eye on the world's most accurate
timepiece, the F-1 Cesium Fountain Atomic Clock. Parker's effort is crucial
to everything from running the Internet to managing spacecraft and making
accurate astronomy observations.
Yet telling time on Parker's $200,000 clock, which behaves less like a Rolex
than a toy-sized factory, is rather impossible. In fact, Parker checks it
only every f |
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s******o
发帖数: 298 | 48 Scientists estimate how much water ice hides below the martian surface.
by Vanessa Thomas
In March, when Mars Odyssey scientists announced that the spacecraft had
found signs of water ice below the martian surface, the team was hesitant to
say just how much ice could be there. But now, after getting a chance to
really crunch the numbers, they reveal that enough water to fill two of our
Great Lakes lies just below the planet's dry skin.
"This is really amazing," says University of Arizona researc |
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s*****t
发帖数: 1994 | 49 Ida and Dactyl: Asteroid and Moon
Explanation: This asteroid has a moon! The robot spacecraft Galileo currently exploring
the Jovian system, encountered and photographed two asteroids during its long journey to
Jupiter. The second asteroid it photographed, Ida, was discovered to have a moon which
appears as a small dot to the right of Ida in this picture. The tiny moon, named Dactyl, is
about one mile across, while the potato shaped Ida measures about 36 miles long and 14
miles wide. Dactyl is t |
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s*****t
发帖数: 1994 | 50 Io: Moon Over Jupiter
Explanation: How big is the Jovian moon Io? The most volcanic body in the Solar System,
Io (usually pronounced "EYE-oh") is 3,600 kilometers in diameter, about the size of planet
Earth's single large natural satellite. Gliding past Jupiter at the turn of the millennium, the
Cassini spacecraft captured this awe inspiring view of active Io with the largest gas giant as a
backdrop, offering a stunning demonstration of the ruling planet's relative size. Although in
the picture |
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