Debug: Database connection successful Monatomic Hydrogen / Interplanetary transportation / New Mars Forums

New Mars Forums

Official discussion forum of The Mars Society and MarsNews.com

You are not logged in.

Announcement

Announcement: This forum has successfully made it through the upgraded. Please login.

#1 2008-04-12 14:46:49

Terraformer
Member
From: The Fortunate Isles
Registered: 2007-08-27
Posts: 3,909
Website

Re: Monatomic Hydrogen

Could we liquidise Negative Hydrogen Ions? Such Ions could be prevented from slipping through the tank walls by an electrostatic barrier.

That's containment though. Ho would a rocket utilise them?


Use what is abundant and build to last

Offline

Like button can go here

#2 2008-04-12 14:52:07

JoshNH4H
Member
From: Pullman, WA
Registered: 2007-07-15
Posts: 2,564
Website

Re: Monatomic Hydrogen

Ion propulsion, maybe.


-Josh

Offline

Like button can go here

#3 2008-04-12 15:13:30

GCNRevenger
Member
From: Earth
Registered: 2003-10-14
Posts: 6,056

Re: Monatomic Hydrogen

Could we liquidise Negative Hydrogen Ions? Such Ions could be prevented from slipping through the tank walls by an electrostatic barrier.

No. No concieveable electrostatic barrier could possibly withstand the expanding force from all those negatively charged ions trying to repel each other.

Besides, even if you could, it wouldn't accomplish nothing because H- does not react with itself to form H2, as it has too many electrons. H- would also be ridiculously corrosive. What you want is monoatomic radical hydrogen, not hydride (H-) ions.


[i]"The power of accurate observation is often called cynicism by those that do not have it." - George Bernard Shaw[/i]

[i]The glass is at 50% of capacity[/i]

Offline

Like button can go here

#4 2008-04-12 17:37:35

JoshNH4H
Member
From: Pullman, WA
Registered: 2007-07-15
Posts: 2,564
Website

Re: Monatomic Hydrogen

possibly, if you're going to use hydrogen Ions at all, use H+.  It would take up less space, and electrons could be added in the combustion chamber.  Although be prepared for densities in the fuel tank of 1 g/m^3 or less.


-Josh

Offline

Like button can go here

#5 2008-04-12 19:12:38

GCNRevenger
Member
From: Earth
Registered: 2003-10-14
Posts: 6,056

Re: Monatomic Hydrogen

Again the same problem, the Hydrogen ions would repel each other too strongly to effectively bottle any useful mass of them.

What you might want to look at is radical Hydrogen, Hydrogen atoms with only one electron, dissolved into something else.. something solid, cryogenic, and highly inert.


[i]"The power of accurate observation is often called cynicism by those that do not have it." - George Bernard Shaw[/i]

[i]The glass is at 50% of capacity[/i]

Offline

Like button can go here

#6 2008-04-13 07:15:23

JoshNH4H
Member
From: Pullman, WA
Registered: 2007-07-15
Posts: 2,564
Website

Re: Monatomic Hydrogen

solid He?


-Josh

Offline

Like button can go here

#7 2008-04-13 10:39:42

Terraformer
Member
From: The Fortunate Isles
Registered: 2007-08-27
Posts: 3,909
Website

Re: Monatomic Hydrogen

Solid Helium? I thought that was banned under the Laws of Physics.


Use what is abundant and build to last

Offline

Like button can go here

#8 2008-04-13 10:47:11

GCNRevenger
Member
From: Earth
Registered: 2003-10-14
Posts: 6,056

Re: Monatomic Hydrogen

Helium doesn't become a solid under any condition.


[i]"The power of accurate observation is often called cynicism by those that do not have it." - George Bernard Shaw[/i]

[i]The glass is at 50% of capacity[/i]

Offline

Like button can go here

#9 2008-04-13 18:22:33

JoshNH4H
Member
From: Pullman, WA
Registered: 2007-07-15
Posts: 2,564
Website

Re: Monatomic Hydrogen

under pressure, yes, it's solid. (at the <1 K range)


-Josh

Offline

Like button can go here

#10 2008-04-13 21:46:24

GCNRevenger
Member
From: Earth
Registered: 2003-10-14
Posts: 6,056

Re: Monatomic Hydrogen

Ehhh under those ultracold conditions, what we traditionally think of solids/liquids/gases is only loosely applicable.


[i]"The power of accurate observation is often called cynicism by those that do not have it." - George Bernard Shaw[/i]

[i]The glass is at 50% of capacity[/i]

Offline

Like button can go here

#11 2008-04-14 06:13:54

Terraformer
Member
From: The Fortunate Isles
Registered: 2007-08-27
Posts: 3,909
Website

Re: Monatomic Hydrogen

You sound like you're trying to weasal your way out. smile


Use what is abundant and build to last

Offline

Like button can go here

#12 2008-04-14 13:51:22

JoshNH4H
Member
From: Pullman, WA
Registered: 2007-07-15
Posts: 2,564
Website

Re: Monatomic Hydrogen

It's a solution, but not a practical one for rocket propulsion.


-Josh

Offline

Like button can go here

#13 2008-04-25 08:22:07

Antius
Member
From: Cumbria, UK
Registered: 2007-05-22
Posts: 1,003

Re: Monatomic Hydrogen

Could we liquidise Negative Hydrogen Ions? Such Ions could be prevented from slipping through the tank walls by an electrostatic barrier.

That's containment though. Ho would a rocket utilise them?

If you get diatomic hydrogen hot enough, it will dissociate into monatomic hydrogen.  This means that very hot nuclear rockets using a hydrogen propellant have an added specific impulse advantage as the molecular mass of the propellant is effectively much lower.

Offline

Like button can go here

#14 2008-04-25 13:49:17

JoshNH4H
Member
From: Pullman, WA
Registered: 2007-07-15
Posts: 2,564
Website

Re: Monatomic Hydrogen

how hot is 'hot enough'?


-Josh

Offline

Like button can go here

#15 2008-04-27 08:42:25

GCNRevenger
Member
From: Earth
Registered: 2003-10-14
Posts: 6,056

Re: Monatomic Hydrogen

Well above 3000K.


[i]"The power of accurate observation is often called cynicism by those that do not have it." - George Bernard Shaw[/i]

[i]The glass is at 50% of capacity[/i]

Offline

Like button can go here

Board footer

Powered by FluxBB