AlAr - Aluminum-Argon Fuel?

Preflably, from the atmosphere. I wonder if the reation AlAr-> Al Ar is

> http://www.navytechmatch.org/DOD/Patent/PatentView.aspx?id=5597947
> Interesting, Aluminum-Argon, after the argon falls off (very nice
> propellent), the aluminum is available to be burned with oxygen.

> Craig Fink wrote:
>> http://www.navytechmatch.org/DOD/Patent/PatentView.aspx?id=5597947
>> Interesting, Aluminum-Argon, after the argon falls off (very nice
>> propellent), the aluminum is available to be burned with oxygen.
>
> The patent doesn't describe an Al-Ar _compound_. Argon is called an
> "inert gas" for good reason! What the patent describes is "exploding"
> an aluminum wire in an argon atmosphere in order to create very small
> particles of aluminum metal. If such particles were exposed to air,
> they would oxidize very quickly.

Preflably, from the atmosphere. I wonder if the reation AlAr-> Al Ar is

Preflably, from the atmosphere. I wonder if the reation AlAr-> Al Ar is

> Aviation Week artical talked about Boron-gel, better yet Aluminum-Argon
> AlAr.

> http://www.navytechmatch.org/DOD/Patent/PatentView.aspx?id=5597947

> Interesting, Aluminum-Argon, after the argon falls off (very nice
> propellent), the aluminum is available to be burned with oxygen.
> Preflably, from the atmosphere. I wonder if the reation AlAr-> Al Ar is
> exothermic or endothermic? Exothermic would be nice, adding energy.

> Ar not Ag.

> On Mon, 06 Mar 2006 12:34:41 +0000, Craig Fink wrote:

>> Aviation Week artical talked about Boron-gel, better yet Aluminum-Argon
>> AlAr.

>> http://www.navytechmatch.org/DOD/Patent/PatentView.aspx?id=5597947

>> Interesting, Aluminum-Argon, after the argon falls off (very nice
>> propellent), the aluminum is available to be burned with oxygen.
>> Preflably,

>> from the atmosphere. I wonder if the reation AlAr-> Al Ar is
>> exothermic or endothermic? Exothermic would be nice, adding energy.

> On Mon, 06 Mar 2006 12:42:10 +0000, Craig Fink wrote:

>> Ar not Ag.

>> On Mon, 06 Mar 2006 12:34:41 +0000, Craig Fink wrote:

>>> Aviation Week artical talked about Boron-gel, better yet Aluminum-Argon
>>> AlAr.

>>> http://www.navytechmatch.org/DOD/Patent/PatentView.aspx?id=5597947

>>> Interesting, Aluminum-Argon, after the argon falls off (very nice
>>> propellent), the aluminum is available to be burned with oxygen.
>>> Preflably,

> Preferably (Oh, gees, proof reader must be on vacation)

>>> from the atmosphere. I wonder if the reation AlAr-> Al Ar is
>>> exothermic or endothermic? Exothermic would be nice, adding energy.

> Aviation Week artical talked about Boron-gel, better yet Aluminum-Argon
> AlAr.

> http://www.navytechmatch.org/DOD/Patent/PatentView.aspx?id=5597947

> Interesting, Aluminum-Argon, after the argon falls off (very nice
> propellent), the aluminum is available to be burned with oxygen.
> Preflably, from the atmosphere. I wonder if the reation AlAr-> Al Ar is
> exothermic or endothermic? Exothermic would be nice, adding energy.

>> Aviation Week artical talked about Boron-gel, better yet Aluminum-Argon
>> AlAr.

>> http://www.navytechmatch.org/DOD/Patent/PatentView.aspx?id=5597947

>> Interesting, Aluminum-Argon, after the argon falls off (very nice
>> propellent), the aluminum is available to be burned with oxygen.
>> Preflably, from the atmosphere. I wonder if the reation AlAr-> Al Ar is
>> exothermic or endothermic? Exothermic would be nice, adding energy.

> The wonder is that argon would form a compound with anything. It seems
> almost as inert as helium.

> On Tue, 07 Mar 2006 03:30:36 -0600, Damon Hill wrote:

>>> Aviation Week artical talked about Boron-gel, better yet Aluminum-Argon
>>> AlAr.

>>> http://www.navytechmatch.org/DOD/Patent/PatentView.aspx?id=5597947

>>> Interesting, Aluminum-Argon, after the argon falls off (very nice
>>> propellent), the aluminum is available to be burned with oxygen.
>>> Preflably, from the atmosphere. I wonder if the reation AlAr-> Al Ar is
>>> exothermic or endothermic? Exothermic would be nice, adding energy.

>> The wonder is that argon would form a compound with anything. It seems
>> almost as inert as helium.

> Diatomic ArAl has a low enthalpy bond of 5.34 ±0.78 kJ/mol

> http://www.webelements.com/webelements/elements/text/Ar/enth.html

> Yeah, it's interesting that one of the known atoms that Argon can bond to
> is Helium. ArHe, both noble gases.

> http://www.physics.helsinki.fi/~lundell/compchem/laskemfi/HArF.pdf

> In 2000, scientist were able to make HArF, but it decomposes above 27
> Kelvin.

> The ArAl, is made at elevated temperatures. Essentially, electrically
> exploding an Aluminum wire in a dense (?cold?) Argon atmosphere. I wonder
> if the technique could better be described as creating an Aluminum plasma
> in a dense Argon atmosphere. Which makes me wonder if it's possible to
> make other compounds with the high temperature plasma technique. As the
> plasma cools, the atoms have nothing to attach to but Argon.

> Xenon can form oxides XeO3 and XeO4. XeO3 melts/explodes 25C, and XeO4 at
> -36C. Hummm, an oxidizer for a cryogenic solid rocket?

> On Wed, 08 Mar 2006 14:16:46 +0000, Craig Fink wrote:

>> On Tue, 07 Mar 2006 03:30:36 -0600, Damon Hill wrote:

>>>> Aviation Week artical talked about Boron-gel, better yet Aluminum-Argon
>>>> AlAr.

>>>> http://www.navytechmatch.org/DOD/Patent/PatentView.aspx?id=5597947

>>>> Interesting, Aluminum-Argon, after the argon falls off (very nice
>>>> propellent), the aluminum is available to be burned with oxygen.
>>>> Preflably, from the atmosphere. I wonder if the reation AlAr-> Al Ar is
>>>> exothermic or endothermic? Exothermic would be nice, adding energy.
<snip>
> Better yet, create the plasma in a super cooled cryogenic Argon bath,
> where the Argon bath is a large enough heat sink to absorb all the energy
> input used to turn the other substance into a plasma. This way whatever
> Argon compound that is created has a better chance of not decomposing
> due to elevated temperatures.

> > Aviation Week artical talked about Boron-gel, better yet Aluminum-Argon
> > AlAr.

> > http://www.navytechmatch.org/DOD/Patent/PatentView.aspx?id=5597947

> > Interesting, Aluminum-Argon, after the argon falls off (very nice
> > propellent), the aluminum is available to be burned with oxygen.
> > Preflably, from the atmosphere. I wonder if the reation AlAr-> Al Ar is
> > exothermic or endothermic? Exothermic would be nice, adding energy.

> The wonder is that argon would form a compound with anything. It
> seems almost as inert as helium.

> Damon Hill wrote:

>> > Aviation Week artical talked about Boron-gel, better yet Aluminum-Argon
>> > AlAr.

>> > http://www.navytechmatch.org/DOD/Patent/PatentView.aspx?id=5597947

>> > Interesting, Aluminum-Argon, after the argon falls off (very nice
>> > propellent), the aluminum is available to be burned with oxygen.
>> > Preflably, from the atmosphere. I wonder if the reation AlAr-> Al Ar is
>> > exothermic or endothermic? Exothermic would be nice, adding energy.

>> The wonder is that argon would form a compound with anything. It
>> seems almost as inert as helium.

> The electrically exploded wire would condense as small particles,
> with lots of surface area, maybe enough for one argon atom to
> stick for each 10 to 100 aluminum atoms. Not a compound as such,
> but a material containing both, as said in the patent.

> Sorry for this messy posting:-(
>
> Sorry, they
> (http://www.navytechmatch.org/DOD/Patent/PatentView.aspx?id=5597947# )
> won't respond to queries about what they have. Query was sent, 3+weeks,
> no response. Really have no Idea if it is a Compound or NOT! MAY or NOT
> be, but it is simple enough to find out.
>
> What I find so exciting is that here we have ((((Exploding Oxidizer)))),
> that produces an Oxidizer, and ((((Exploding Fuel)))) (aluminum, maybe
> hydrogen), that produces Fuel. Cool, chemical energy just went way
> up, now it can start to add extra...
>
> What's wrong with that?
>
> Craig Fink
>

O2 -> O + O - energy (breaking bond)
H2 -> H + H - energy (breaking bond)
H + H + O -> H2O + energy (bonding)

XeO4 -> Xe + O + O + O + O - energy (breaking bond)

O + O -> O2 + energy (bonding)

XeO4 -> Xe + 2O2 + energy

Xe04 -> Xe + 2O2

H2+0.5*O2 -> 2H20 ( 242kj / mol ) (need 4 of these for every XeO4)

v = sqrt(2E/m) = (3222000/0.203) = 3984m/s => Isp = 406s

v = sqrt(2E/m) = 5185m/s -> Isp = 529 seconds