Pages Menu
Categories Menu
FORUM

FORUM

Welcome to the Objective Europa forum for general debate and discussions in areas related to a crewed mission to Jovian moon Europa. Suggestions and ideas in the forum will not be filed as part of the research in phase-I.

  • If you have not registered for the forum, please do so (see login link below).
  • Please browse through the topics to find a relevant space for your input.
  • Posting image concepts, links to relevant Europa topics and video are encouraged.
  • We encourage you or others to gather your concepts and ideas from this forum in reports for phase-I.
  • Contact via forum-email if you have suggestions for additional topics or categories.
  • Flaming, trolling and libel activity are cause for immediate post deletion and login denial.

Welcome Guest 

Show/Hide Header

Welcome Guest, posting in this forum requires registration.

Pages: 1 2 3
Author Topic: Renewable Energy


most
Europa Dreamer
Posts: 10
Re: Renewable Energy
on: October 8, 2013, 08:03

Vicem, I want to explain my opinion. We can bring a lot of nuclear battaries, BUT this energy come to an end far or soom. We dont know what Europa prepare to us, how many time we spend there. We dont know what we will do there, we need to reach Europa's ocean or, in best way, solid ground below it. You understand how many energy necessary for it? Many more, than can Pu-238 battaries accumulate, many more. Add here system of life support, nuclear shield... Thats why energy must be strongly renewable, another way this mission will die. We know, that best known energy source is thermonuclear reaction. Moreover, reserve of hydrogen in space much more, than rreserve of nuclear fuel. I repeat, we still have two difficult questions: how to keep plasma and how to mine hydrogen from Jupiter's athmosphere



most
Europa Dreamer
Posts: 10
Re: Renewable Energy
on: October 8, 2013, 08:07

It can be another answer for energetical question: magnetic field....but I doesnt know, is it possible without electric magnet. Nature magnetism probably not enouth.



Vicem
Europa Dreamer
Posts: 17
Re: Renewable Energy
on: October 9, 2013, 17:14

In response to ragdestein: Yes, we would need quite a lot more than the Voyager 1, however Pu-238 has a half life of about 87 years, meaning it would last quite a while, it's just a matter of having enough of it... I agree that there may be other possibilities discovered in the near future, however its long life plus the massive amount of heat it generates should make this a key power source on this mission...

most: As I stated above, Pu-238's half life is about 87 years, so I seriously doubt that its longevity will be an issue. However, that is not to say that there aren't better power sources... Thermonuclear reactors could be useful if we're able to make them small enough to be feasibly launched from Earth...



ChrisWeeks-
3D
Europa Dreamer
Posts: 10
Re: Renewable Energy
on: October 10, 2013, 03:40

What about using thorium reactors? I'm not an expert on the subject, but my understanding is that thorium is extracted from seawater on Earth. Is there any indication that it could be extracted from either the surface ice, or from the lakes/oceans of Europa (since the mission parameter includes drilling down to the water anyway)?



Marcin
Europa Dreamer
Posts: 6
Re: Renewable Energy
on: October 11, 2013, 19:00

So Radiation Conversion should be quite effective but this technology is also new and could be problematic (we should work on improving anyway). Taking radioactive elements from earth is short term solution so its waste of rocket thrust (in my opinion), we should find something easy accessible in there.

So I'm thinking about refining gas from Jupiter its made of 89.8±2.0% hydrogen and ~0.3% methane, we could use some automatic floating refining station which then launch payloads of gas out of atmosphere. Then orbiting satellite could grab it and take to Europa.

So to burn this gas we need oxygen, tenuous atmosphere of it is on Europa, trace is also on other moons.
This process could create a global worming effect and make the moon more suitable for us.

Data from wikipedia



Bryan
Europa Astronaut
Posts: 98
Re: Renewable Energy
on: October 11, 2013, 21:09

Why in the world do we want to warm another planet?

Anyways, burning hydrogen would not lead to global warming. It produces water, not carbon dioxide.



Marcin
Europa Dreamer
Posts: 6
Re: Renewable Energy
on: October 12, 2013, 18:09

There are plans of terraforming mars, why not Europa, it should be easy.

Water vapor is more effective as greenhouse gas then carbon dioxide, it has up to 72% contribution in greenhouse effect, and CO2 only 26%. Welcome to real world Mr. Al Gore.

There are probably better sources of information, but you can read this http://en.wikipedia.org/wiki/Greenhouse_gas



Bryan
Europa Astronaut
Posts: 98
Re: Renewable Energy
on: October 12, 2013, 23:40

It wouldn't be water vapor. It would be ice. Because Europa is really really cold.



Galactica
Europa Dreamer
Posts: 1
Re: Renewable Energy
on: December 22, 2013, 19:22

Electromagnetic Drive producing Plasma is the most efficient Energy to use for inter-stellar travel. But hydrogen-oxygen fuel cell is the most essential to build since europa is watery place...



AlexD
Europa Dreamer
Posts: 4
Re: Renewable Energy
on: January 13, 2014, 04:52

The only practical energy source for long distance space travel is a molten salt thorium nuclear reactor. They are compact, safe, easy to manage, efficient and most importantly compact. A reactor could be built small enough to fit inside the the spacecraft and could supply power to any subsurface probe via a cable. 1kg of thorium would be enough fuel for many years. I can't remember exactly all the sources I looked at, but if anyone wants to learn more about them look up LIquid Fluorine Thorium Reactors (LIFTRs) and the Oak Ridge molten salt reactor experiment. A reactor on board the spacecraft could also be used as part of a nuclear rocket.

Pages: 1 2 3
Mingle Forum by cartpauj | ElegantPress by Theme4Press and SOFTthemes | Sponsored by Sasina Therapy
Version: 1.0.34 ; Page loaded in: 0.029 seconds.