Community > Forum > Technology & Science > propellant production methods

propellant production methods

Posted by: Ekkehard Augustin - Tue Jan 08, 2008 11:26 am
Post new topic Reply to topic
 [ 4 posts ] 
propellant production methods 
Author Message
Moderator
Moderator
avatar
Joined: Thu Jun 03, 2004 11:23 am
Posts: 3745
Location: Hamburg, Germany
Post propellant production methods   Posted on: Tue Jan 08, 2008 11:26 am
Under www.wissenschaft.de there is an article today about a new method to produce bio-ethanole. Since Armadilo Aerospace's lunar landers developed for the Lunar Lander Challenge are consuming Etahnole and Micro Space's lander will consume Methanole at least it may be of interest here.


According to the article researches have found that a plant called "mehrjährige Rutenhirse" in German is particularly qualified fro the production of Ethanole. It allows to provide by more than 540% more enegry than consumed to produce the Bio-Ethanole.

The wooden remnants of that plant that can't be applied to produce Ethanole can be consumed to light the bio-refines which means that no additional energies are required - in opposite there is a surplus that allows to sell electricity at the markets.

The article refers to Marty Schmer (Institute of Agriculture at the University Nebraska, Lincoln) et al.: PNAS, Vol. 105, P. 464 - www.pnas.org .

That Bio-Ethanole at present is considered to be for cars but up to now I don't know informations or data speaking against its application for Pixel, Texel, Micro Space's lander or rockets.

The method of production may be interesting for application on the Moon or elsewhere in space if the Rutenhirse would be brought there or if its production could be enabled there via mixing ISRU-products with perhaps required earthian ingredients.

...
...
...





Dipl.-Volkswirt (bdvb) Augustin (Political Economist)


Back to top
Profile
Space Walker
Space Walker
avatar
Joined: Tue Aug 07, 2007 12:45 pm
Posts: 152
Post    Posted on: Tue Jan 08, 2008 3:12 pm
Fuel production that way requires, among other things, large amounts of sunlight and water. I think it would be better to split water directly into oxygen and hydrogen using solar or nuclear power.


Back to top
Profile
Moderator
Moderator
avatar
Joined: Thu Jun 03, 2004 11:23 am
Posts: 3745
Location: Hamburg, Germany
Post    Posted on: Tue Jan 15, 2008 11:31 am
An article under www.welt.de talking about it today tells that "Rutenhirse" is called Switchgrass in English. The method is called Lignocellulosis ifI understand correct - the term is listed not linked directly to Switchgrass.

The numbers listed and posted are based on agricultural methods and grasses applied in 2000 and 2001. The amount to be harvested can be in´creased by more than 50%.

It still looks as if it may favour Armadillo Aerospace's Pixel, Texel etc.



Dipl.-Volkswirt (bdvb) Augustin (Political Economist)


Back to top
Profile
Moderator
Moderator
avatar
Joined: Thu Jun 03, 2004 11:23 am
Posts: 3745
Location: Hamburg, Germany
Post    Posted on: Tue Feb 17, 2009 6:46 pm
Hello, Minthos,

Ethanole, Methanole and the like have the advantage of better storability. This might be a sufficient argument...



Dipl.-Volkswirt (bdvb) Augustin (Political Economist)


Back to top
Profile
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 4 posts ] 
 

Who is online 

Users browsing this forum: No registered users and 11 guests


© 2014 The International Space Fellowship, developed by Gabitasoft Interactive. All Rights Reserved.  Privacy Policy | Terms of Use