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Nevearion
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Old
281 - 06-27-2010, 03:30 PM
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Quote:
Originally Posted by LordMelkor View Post
The idea of using a catapult for space travel seems a little far fetched... since all the acceleration would have to occur right at the instant of launch resulting in a huge impulse.
It is even worse than you are thinking because the largest drag occurs at low altitudes and generally spacecraft do not go supersonic until they are fairly high up in the atmosphere. That is also a result of increasing acceleration as the thrust to weight ration increases as the fuel burns.
 
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Goshin
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Old
282 - 06-27-2010, 03:58 PM
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mag rail ideas to shoot cargo or people at 3g to space have been drawn up
typically you're looking at a long, long track, and the best mountain to use is Kilamanjaroo or however it is spelt

multi trillion dollars with immense power being needed to power the thing.
it's generally thought to be stupidily impractical.

personal life and work are still kicking my ass. I need to catch up too, just for myself!
 
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TeckMan
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283 - 06-27-2010, 04:02 PM
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Oh no not just for yourself. It is very important for everyone that you know all about space travel. You are a significant human being whose ideas are worth listening to.
 
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Goshin
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Old
284 - 06-27-2010, 04:05 PM
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get out of my thread teckman
noone knows you enough to even decide to like or hate you

meanwhile, this thread is amazing
unlike you're entire existence
 
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Goshin
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285 - 06-28-2010, 12:54 PM
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Completed SD HLV assessment highlights low-cost post-shuttle solution | NASASpaceFlight.com

long read, but goes over NASA's findings on the sidemount Heavy Lift Vehicle and the Inline HLV, both based on existing hardware (shuttle derived, or SD)

probably just a mental excerise at this point
lets hope we get some tech breakthroughs in the next few years

i'm personally waiting ~18 months for a few things to shake out

a followup to the first link
http://www.nasaspaceflight.com/2010/...ity-of-design/
Quote:
As part of the comprehensive 700+ page study of a truly Shuttle Derived Heavy-Lift Vehicle (SD HLV), a preliminary assessment of an SD HLV***8217;s capability to deliver cargo (and potentially crew) to International Space Station (ISS) has been performed, demonstrating the first part of an SD HLV***8217;s multi-use potential should this vehicle be chosen as America***8217;s new Heavy Lift vehicle in 2015 (in accordance with President Obama***8217;s current timeline for America***8217;s future in space).
 
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Goshin
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Old
286 - 06-28-2010, 01:25 PM
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For a long while we've always assumed, or at least could only attempt to start locating life on other planets based on a carbon building block.

check out this new technology
Technology Review: Blogs: arXiv blog: Microbial Fuel Cell Could Detect Non-Carbon Based Life, Say Physicists
Quote:
Today, Ximena Abrevaya and buddies at the University of Buenos Aires in Argentina suggest a solution to this problem. They say that a microbial fuel cell can detect life in a way that is entirely independent of its chemical make up. The only assumption is that the life form in question must take chemical energy from the environment and use it to power the processes of life, in other words, that it must metabolise.

Abrevaya and co have tested just such a fuel cell that they say can do the job. Their device consists of an anode and a cathode separated by a membrane through which protons can pass. the anode is embedded in the medium under investigation, such as Martian soil.

The idea is that the metabolic processes, wherever they have evolved, must depend on redox reactions that generate electrons and protons. The anode in the fuel cell captures the electrons generated in this process while the protons pass through the membrane, completing the circuit. So the amount of current that flows is a direct indicator of the amount of life present.

The Argentinian team tested the device by comparing the results it produces from life-containing soil with the same soil after it has been sterilised. And they've done it with creatures representing archaea, bacteria and eukarya, the three domains of life.

Of particular interest is the archea they tested--Natrialba magadii, a microorganism isolated from Magadii Lake in Kenya that survives in conditions of extreme salinity, like those that may exist on Mars and other places.

The team says the results were positive. The power and current densities were much higher when the anode was embedded in soil samples containing life compared to samples that had been sterilized, they say.

That makes microbial fuels cells an interesting candidate for exolife experiments. A Mars lander carrying a microbial fuel cell would simply take two samples of soil, sterilize one of them by heating it and then test both.

What's cool about this approach is that the life needn't even be carbon-based. "In contrast to the Viking experiments, our methodology does not require the existence of a carbon based life," says the Argentinians
 
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Goshin
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287 - 06-28-2010, 05:55 PM
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Bigelow Aerospace: Commercial Spacecraft and Complexes - Space Business cool moonbase artist vision at link
more deets
SPACE.com -- Private Moon Bases a Hot Idea for Space Pioneer

cool



last thing
http://www.nytimes.com/2010/06/08/sc...e/08space.html
 
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Last edited by Goshin; 06-28-2010 at 06:22 PM.
Goshin
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288 - 07-20-2010, 05:27 PM
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Quote:
Hawthorne, CA ***8211; July 20, 2010 ***8211; SpaceX (Space Exploration Technologies) applauds the efforts of the Senate Commerce, Science and Transportation Committee for their unanimous, bipartisan approval of the NASA Authorization Act of 2010. This landmark legislation ushers in a new era in human spaceflight by embracing the commercial sector as a full partner and recognizing commercial crew services as the primary means of astronaut transport to the International Space Station (ISS).
"We are pleased that the Senate Commerce Committee has recognized that the best and only near-term option for eliminating America's reliance on the Russian Soyuz for astronaut transportation is the development and use of commercial systems, such as SpaceX's Falcon 9 and Dragon spacecraft,***8221; said Elon Musk, CEO & CTO, SpaceX. "For about the same amount that is currently being spent on purchasing seats on Russian launch vehicles, we can create thousands of high-tech, high-paying jobs right here at home."
In 2010, NASA will pay the Russian Space Agency $287.4 million for 6 seats on Russian Soyuz flights, which amounts to $47.9 million per seat. By 2013, the price per seat paid to Russia to carry U.S. astronauts will exceed $55 million.
Though it provides less funding than the President's request, the new legislation provides $312 million in FY11 funding for the development of American commercial systems to transport crew to the ISS. SpaceX is one of several companies currently developing commercial crew technology funded by NASA, including Nevada-based Sierra Nevada Corporation, Illinois-based Boeing Company, Colorado-based United Launch Alliance, Washington-based Blue Origin, Nevada-based Bigelow Aerospace, and Arizona-based Paragon Space Development Corporation.
SpaceX successfully launched its Falcon 9 rocket carrying a Dragon spacecraft test article in June 2010, meeting 100% of mission objectives on its first attempt. The first demonstration flight with a fully operational Dragon spacecraft is targeted for late summer 2010. This flight will be the first under NASA***8217;s Commercial Orbital Transportation Services (COTS) program which was established in 2006 to encourage private companies to develop commercial space transport capabilities. SpaceX currently employs over 1,100 people across California, Texas and Florida.

About SpaceX
SpaceX is developing a family of launch vehicles and spacecraft intended to increase the reliability and reduce the cost of both manned and unmanned space transportation, ultimately by a factor of ten. With the Falcon 1 and Falcon 9 vehicles, SpaceX offers highly reliable/cost-efficient launch capabilities for spacecraft insertion into any orbital altitude and inclination. Starting when the Space Shuttle retires, SpaceX's Dragon spacecraft will provide Earth-to-LEO transport of pressurized and unpressurized cargo, including resupply to the International Space Station.
Founded in 2002, SpaceX is a private company owned by management and employees, with minority investments from Founders Fund and Draper Fisher Jurvetson. The SpaceX team now numbers over 1,100, with corporate headquarters in Hawthorne, California. For more information, and to watch the archived video of the Falcon 9, Flight 1 launch, visit the SpaceX website at SpaceX.com.
something that popped out to me, their first flight as part of COTS is late summer 2010. Seems much quicker than some were predicting (2011) and they are hoping to test a fully functional dragon space craft as well.
Let's hope it works out for them, because this would be amazing for space in general if it was so!
(bigelow could start building his hotel/l1/l2)
 
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Goshin
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289 - 07-22-2010, 06:20 PM
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Big week for Dextre, as the Canadian robot begins operational service | NASASpaceFlight.com

essentially, a space robot for use to do EVAs without human presence (more or less) went up to ISS in mid 2008. FINALLY (lots of trouble shooting issues), it has completed it's first mission and was a success. So now more **** can get done faster on the ISS. Possible extension of ISS thru 2028.
 
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Goshin
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Old
290 - 07-29-2010, 11:00 AM
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couple of things:
Quote:
Your Help Urgently Needed to Save the Future of Human Spaceflight


If you care about the future of American space exploration, your urgent help is necessary. The only hope for the average citizen to one day travel to space is in danger due to the actions of certain members of Congress. SpaceX does not have the enormous lobbying power of the big government contractors to stop them, however with your help the day can still be saved.

NASA’s Authorization bill (H.R. 5781) will be debated on the floor of the US House of Representatives tomorrow. Despite the imminent retirement of the Space Shuttle, H.R. 5781 authorizes over five times as many taxpayer dollars to fly NASA astronauts on the Russian Soyuz than it invests in developing an American commercial alternative, moreover at a time when jobs are sorely needed in the United States. Quite simply, this bill represents the sort of senseless pork politics that has driven our national debt to the point where our economy can barely service it.

The bill is expected to be brought to the House floor this Friday under a special “suspension of the rules,” which is a procedure that limits debate and amendments.

Telephone your Congressional representative right away via the House Switchboard at (202) 225-3121 and ask them to vote NO on H.R. 5781, and instead support the bill unanimously agreed to in the Senate last week.

Your five minutes will make a critical difference, ensuring an exciting and inspiring future in space travel! SpaceX rarely asks you to take action, so you know it really matters when we do.

--Elon--

Look up your representative here. <http://cmpgnr.com/r.html?c=1640291&r=163895 0&t=1620959639&l=1&d=9178 3649&u=http%3a%2f%2fwww%2 ehouse%2egov%2fzip%2fZIP2 Rep%2ehtml&g=0&f=-1>
Elon was also on Colbert:
Quote:
It's up now (last segment, starting at ~16 minutes): Full Episode | July 28, 2010 - Elon Musk | Colbert Report

The latter half is mostly about SpaceX. No big revelations, as one might expect, although it was kind of amusing with some crude humor and contrasting with Richard Branson at the end. Also, mentioned estimate of 3-4 years for delivering astronauts to ISS and goal of carrying people beyond Earth orbit.

This part was somewhat amusing, I thought:

Colbert: And it [the Falcon 9] orbited the Earth, for how long?
Musk: about a month
Colbert: Like Sputnik!
Musk: ... right
Colbert: Are you the next enemy of the United States?
Musk: ::laughs:: I'm a great fan of the United States, like you are.
Colbert: Excellent
 
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Goshin
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Old
291 - 07-29-2010, 11:03 AM
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switching gears, ROBOTS IN SPAAAAACE

NASA Prepares for Robonaut Launch to ISS on STS-133/Discovery | NASASpaceFlight.com

Quote:
Dubbed Robonaut #2 (R2 for short), the cornerstone of humanoid robotic technology is part of a phased program to increase robotic exploration of Near Earth Objects prior to or in place of human exploration.

Robonaut 2, a ***8220;state of the art anthropomorphic robot, with the payload, speed and dexterity that enable it to do work, differentiating it from other humanoid robots,***8221; is a fully dexterous robot developed by JSC engineering in partnership is General Motors.

Like R1, the immediate predecessor of R2, Robonaut #2 has demonstrated its ability here on Earth to utilize internal/external ISS interfaces and EVA tools designed for astronauts.

However, like all advances in robotics, R2 is at least 4 times faster than R1, more compact, more dexterous, and ***8220;includes a deeper and wider range of sensing,***8221; notes the white paper document associate with the human looking robot.

Specifically, the improvements R2 spouts over R1 include: ***8220;optimized overlapping dual arm dexterous workspace, variable stiffness series elastic joints, extended finger and thumb travel, highly integrated electronics, miniaturized 6***8208;axis load cells, redundant force sensing, ultra***8208;high speed joint controllers, extreme neck travel, and high resolution camera and IR (Infrared) systems.***8221;
 
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djibouti
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Old
292 - 07-29-2010, 11:08 AM
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Saw this on Reddit:
Give this a listen. Apparently the annual budget for air conditioning tents in Afghanistan and Iraq ($20 billion) is larger than the budget of NASA ($18 billion). : politics

Say's the annual budget spent on air conditioners for the US military in the mid east is $20 billion.

That's 2 billion more than the annual budget for NASA. ****
 
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Goshin
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Old
293 - 07-29-2010, 12:13 PM
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i'm depressed this thread gets no traffic
 
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Baby Bew
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Old
294 - 07-29-2010, 12:39 PM
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Dear Goshin,

Lee Archambault
came here to give a presentation a few weeks ago

That is all
 
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Goshin
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Old
295 - 07-29-2010, 12:49 PM
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cool
what'd he talk about?
 
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Baby Bew
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Old
296 - 07-29-2010, 12:51 PM
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he just described the last mission he went on to install the last array of solar panels on the iss
 
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Goshin
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297 - 07-29-2010, 02:52 PM
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http://www.directlauncher.com/docume...-July-2010.pdf

press release from Direct crowd
they've made 2 before this in total
 
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Goshin
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Old
298 - 07-29-2010, 02:56 PM
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Bad news for natural cleaning of LEO, the upper atmosphere collapsed to it's lowest levels in the recorded history of space flight due to the extreme solar min.

A Puzzling Collapse of Earth***39;s Upper Atmosphere - NASA Science
 
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Goshin
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Old
299 - 08-03-2010, 12:44 PM
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good news for space debris deorbiting:

Safe and efficient de-orbit of space junk without making the problem worse
Quote:
Global Aerospace Corporation (GAC) announced that Dr. Kristin L. Gates will present a paper on de-orbiting space junk at the August 2 Artificial and Natural Space Debris session of the AIAA Astrodynamics Specialists Conference in Toronto, Ontario, Canada. Dr. Gates will describe GAC's Gossamer Orbit Lowering Device (GOLD) for safe and efficient removal from Low Earth Orbit (LEO) of dangerous space objects. The patented GOLD system concept uses a very large ultra thin balloon envelope to increase the aerodynamic drag by a factor of several hundred. This will cause the space junk to enter the earth's atmosphere quickly and burn up. It will reduce the natural orbit decay of some objects from centuries to months. The computer-generated figure illustrates a GOLD system de-orbiting a large scientific observatory

The envelope material is thinner and lighter than sandwich bag material. It takes a very small amount of gas to inflate it in the almost perfect vacuum of space. The system will work even though it will get punctured many times by small debris objects and tiny meteoroids. Despite these small holes, the total leak rate will be very small. The pressurization system will very easily keep up with the leakage. In the very unlikely event that a large object hits the very thin envelope, it will not cause that large object to break up into new fragments. Therefore, the operation of GOLD itself cannot make the orbital debris environment worse as could be the case with some alternative approaches that others have suggested.
more at link
 
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Rampancy
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Old
300 - 08-06-2010, 01:49 AM
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MOAR GOSHIN MOAR
 
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