ISRU timeline - Revision history

Michel Lamontagne: /* Why in the above order? */

2025-02-20T14:53:53Z

Why in the above order?

Michel Lamontagne: /* Why in the above order? */

2025-02-20T14:51:23Z

Why in the above order?

Michel Lamontagne at 14:48, 20 February 2025

2025-02-20T14:48:52Z

Michel Lamontagne: /* Examples of ISRU planned for Mars */

2025-02-20T14:48:15Z

Examples of ISRU planned for Mars

Michel Lamontagne: /* Discussion */

2025-02-20T14:41:33Z

Discussion

RichardWSmith: /* Examples of ISRU planned for Mars */ Added link

2024-10-16T06:48:44Z

Examples of ISRU planned for Mars: Added link

RichardWSmith: /* Why in the above order? */ spelling.

2024-10-16T06:36:55Z

Why in the above order?: spelling.

RichardWSmith: /* Why in the above order? */ Added why this above order was selected. Added links.

2024-10-16T06:33:17Z

Why in the above order?: Added why this above order was selected. Added links.

RichardWSmith: /* Discussion */ changed order

2024-10-16T06:28:52Z

Discussion: changed order

RichardWSmith: /* Examples of ISRU planned for Mars */

2024-10-16T06:21:56Z

Examples of ISRU planned for Mars

@@ Line 95: / Line 95: @@
 ===Why in the above order?===
-The first Martian missions will likely make return fuel from CO<sub>2</sub> from the air.  We might bring hydrogen from Earth.  However, the abundance of frozen water on Mars [[Permafrost]]is much higher than previously though, so we should be able use local water as a source of hydrogen.
+The first Martian missions will likely make return fuel from CO<sub>2</sub> from the air and hydrogen extracted from frozen water ([[Permafrost]]).
-So the air, and perhaps frozen ground water will be the first items used.
+So the air, and frozen ground water will be the first items used.
-Local materials may be used as radiation protection.  The first 'short' Mars missions are likely to just accept the radiation dose of the Mars trip, but bagging up Martian soil ([[Regolith]]) and putting sand bags on top of the habitat will lower the radiation dose.  Water is a good radiation shield, so using ice in sealed containers could also act as radiation protection.  So soil and water are likely to be the next resources used.
+Local materials may be used as radiation protection.  The first 'short' Mars missions are likely to just accept the radiation dose of the Mars trip, but bagging up Martian soil ([[Regolith]]) and putting sand bags on top of the habitat will lower the radiation dose.  Water is a good radiation shield, so using ice in sealed containers could also act as radiation protection.  So regolith and water are likely to be the next resources used.
 Likely longer term colonists will want to grow food.  To make soil that plants can live in, we will want Nitrogen.  Nitrate deposits have been found on Mars, but likely the first source will be from the air, where N<sub>2</sub> is about 2% of the partial pressure.

@@ Line 95: / Line 95: @@
 ===Why in the above order?===
-The first Martian missions will likely make return fuel from CO<sub>2</sub> from the air.  We must bring hydrogen from Earth, unless we are able to use local water (likely in the form of [[Permafrost]]).
+The first Martian missions will likely make return fuel from CO<sub>2</sub> from the air.  We might bring hydrogen from Earth.  However, the abundance of frozen water on Mars [[Permafrost]]is much higher than previously though, so we should be able use local water as a source of hydrogen.
 So the air, and perhaps frozen ground water will be the first items used.

← Older revision		Revision as of 14:48, 20 February 2025
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−	=~~REFERENCES~~=	+	==References==
−
	See these two articles: <ref>https://www.marssociety.ca/2020/08/24/isru-part1/</ref>, <ref>https://www.marssociety.ca/2020/09/02/isru-part2/</ref>		See these two articles: <ref>https://www.marssociety.ca/2020/08/24/isru-part1/</ref>, <ref>https://www.marssociety.ca/2020/09/02/isru-part2/</ref>
−
−	~~==References==~~

@@ Line 107: / Line 107: @@
 ==Examples of ISRU planned for Mars==
 *We can make [[StarCrete]] made out of Martian regolith, starch, & a bit of salt.  <ref>https://spaceref.com/newspace-and-tech/starcrete-concrete-made-from-martian-regolith/#:~:text=Manchester%20scientists%20have%20created%20a,to%20build%20homes%20on%20Mars.</ref>. Made with potato starch, it is twice as strong as normal concrete.
-Also see these two articles: <ref>https://www.marssociety.ca/2020/08/24/isru-part1/</ref>, <ref>https://www.marssociety.ca/2020/09/02/isru-part2/</ref>
 ==References==

@@ Line 5: / Line 5: @@
 ==Discussion==
-The favored type of mission at this time, by SpaceX (Mars One), NASA(ISP ver.5) and the Mars Society(Mars Direct) all rely on ISRU to produce part of the products needed for their operation and success.
+The favored type of mission at this time, by SpaceX (Occupy Mars), NASA(ISP ver.5) and the Mars Society(Mars Direct) all rely on ISRU to produce part of the products needed for their operation and success.
 The resources and productions planned are listed in the following table by order of development:

@@ Line 103: / Line 103: @@
 Likely longer term colonists will want to grow food.  To make soil that plants can live in, we will want Nitrogen.  Nitrate deposits have been found on Mars, but likely the first source will be from the air, where N<sub>2</sub> is about 2% of the partial pressure.
-After this, the order of things become more murky, but using soil for building materials, and starting the process the dirt and [[Dust]] for metals (especially iron), and basic chemicals to start local industries becomes likely next steps.
+After this, the order of things become more murky, but using soil for building materials, and starting the processing of dirt and [[Dust]] for metals (especially iron), and basic chemicals to start local industries becomes likely next steps.
 ==Examples of ISRU planned for Mars==

@@ Line 29: / Line 29: @@
+|
+|
 |-
 |Atmosphere
 |Nitrogen
 |Settlement air, cold thruster gas, food.
+|
+|
@@ Line 93: / Line 93: @@
 <nowiki>**</nowiki>The best construction material made from regolith will be the subject of some of the first materials research done on Mars and an important scientific objective of initial missions.
 ==Examples of ISRU planned for Mars==