Ueli, Yes, I am clear on this one, and I think we need to label them differently. The point I was making on the stats, is how efficient these electric drive...
Sorry I thought you said the concentrating systems would not work well enough. On the micro gravity of an asteroid such heating systems make even more sense. ...
Hi Jim, I find your post below triggers a lot of thinking on "hybrid" METs. Let's see, and you then tell me whether I get this system right: 1. We get...
At first it seams you are correct, but that is not how it works. If we compare two systems both taking the same amount of hydrogen and oxygen. "A" uses lots of...
Jim, Now I am even more confused! What do you mean by the "simpler pre heater"? What is your system "A"? And what is your system "B" and "longer B system"? I...
Jim, You also wrote: "Wherever the electricity for the MET comes from it can not come from the water used as reaction mass. We could save the water output of...
Hi all, What's the state of play on the "Big Picture"? I've put in a Sunday to figure this out: You'll find the powerpoint presentation we had earlier in...
From James Wilson spacetrader.net Question, We are starting with extremely cold ice from comets or asteroids Is there any reason we can't go directly from ice...
gems@...
Jul 20, 2009 8:29 pm
2614
James, Never thought about it in that way. But what would be the advantage? Water is the famous molecule H2O that naturally falls apart into H2 and O2 and then...
The way a MET works is by supper heating the reaction mass. The hotter and lighter the reaction mass is the higher the ISP is. I was just saying that there is...
Sorry, I should have said they need much more electric power that will come out of fuel cell water, and burning produces more heating than can be produced with...
We should call it a "depot" or "fuel depot", not Water Depot. With about the same equipment many fluids can be processed and need for many missions can be full...
Someone said something about water falling apart into H2 and O2. Now your are saying lets spilit water ice without melting it. I do not know what they are...
OK yes water does break apart if hot enough, but is there a filter that can be used to then separate them that does not disintegrate at that temperature? I...
Jim, I've looked through all the mails re. METs and their hybridization with chemical processes and the "basking and boosting" reasons for energy storage and...
More importantly - gas clathrates may be found in their natural form on icy NEOs.......... "In the realm of planetary science, the study helps explain how some...
Ueli, I had suddenly been theorising that it should be possible to store hydrogen in a stable form in clathrates, after more recent reconsideration of the...
It is not the MET or Ion drive that is so massive it is the power. With a MET if you for a bit once in a while you can put in more water. I will not come out...
gas clathrates: I believe that the methane, and hydrogen  If we add something to our data base about this we should indicate it has some promise of lowering...
Jim, The energy system is the main mass burden? Hm..... you might be right! Or is it the reaction mass it needs? And what about the MRG issues (Modularity,...
Jim, Another thought. You write: "After nuclear chemical is the highest energy to mass density with LH LOX at the top of this group but has the greatest...
Jim, Beaming power? From where? To where? I mean, you are right: If it were possible to have large orbiting stations that generate the power and can then beam...
To elaborate on point #6 here, Ueli, regarding larger MET units. Successful redundancy and mission reliability depends on having several drive units available,...
Having problems with message search?
Fill out this form to ensure your group is one of the first to be migrated to the new message search system.
