Dust - Revision history

RichardWSmith: /* Making bricks from dust */

2024-09-01T03:40:48Z

Making bricks from dust

RichardWSmith: /* Dust reducing the effectiveness of solar cells */ Fixed typo

2024-09-01T03:38:05Z

Dust reducing the effectiveness of solar cells: Fixed typo

RichardWSmith: Discussion of dust blocking solar cells.

2024-09-01T03:31:15Z

Discussion of dust blocking solar cells.

RichardWSmith: /* Dust Size */

2024-07-05T23:53:41Z

Dust Size

RichardWSmith: /* Dust size */

2024-07-05T23:53:12Z

Dust size

RichardWSmith: /* Dust Composition */

2024-07-05T23:52:59Z

Dust Composition

RichardWSmith: Formatting

2024-07-05T23:52:31Z

Formatting

RichardWSmith: /* Making bricks from dust */

2024-07-05T23:52:02Z

Making bricks from dust

RichardWSmith: Added bricks link.

2024-07-05T23:49:29Z

Added bricks link.

RichardWSmith: /* Dust Composition */

2024-07-05T23:38:26Z

Dust Composition

@@ Line 47: / Line 47: @@
 ==Making bricks from dust==
-Poor quality bricks can be made with simple compression and gentle heating.  See [[Brick]] for more information.
+Poor quality bricks can be made with simple compression, tho stronger bricks can be made with gentle heating.  See [[Brick]] for more information.
 ==Dust reducing the effectiveness of solar cells==

@@ Line 52: / Line 52: @@
 Dust storms can last weeks or months and reduce the amount of light hitting the ground by up to 95%. (Tho 30 to 60% is typical.) See [[Dust Storms]] for more information.
-The atmosphere is dusty, and NASA has found that solar cells soon get covered by enough dust to reduce their effectiveness.  This is typically 0.02% per Sol, tho 0.5 to 2% per Sol has been observed at some times. <ref>https://www.sciencedirect.com/science/article/pii/S0032063321001768#:~:text=A%20loss%20of%200.2%25%20per,Mars%20Pathfinder%20and%20Phoenix%20missions.</ref>
+The atmosphere is dusty, and NASA has found that solar cells soon get covered by enough dust to reduce their effectiveness.  This is typically 0.2% per Sol, tho 0.5 to 2% per Sol has been observed at some times. <ref>https://www.sciencedirect.com/science/article/pii/S0032063321001768#:~:text=A%20loss%20of%200.2%25%20per,Mars%20Pathfinder%20and%20Phoenix%20missions.</ref>
 The dust is sticky and resists being wiped clear, even if the cells are dusted off, they will still be reduced by about 1% to 2%.  If washed clean they can be restored to 100% power.

← Older revision		Revision as of 03:31, 1 September 2024
Line 49:		Line 49:
	Poor quality bricks can be made with simple compression and gentle heating. See [[Brick]] for more information.		Poor quality bricks can be made with simple compression and gentle heating. See [[Brick]] for more information.

		+	==Dust reducing the effectiveness of solar cells==
		+	Dust storms can last weeks or months and reduce the amount of light hitting the ground by up to 95%. (Tho 30 to 60% is typical.) See [[Dust Storms]] for more information.
		+
		+	The atmosphere is dusty, and NASA has found that solar cells soon get covered by enough dust to reduce their effectiveness. This is typically 0.02% per Sol, tho 0.5 to 2% per Sol has been observed at some times. <ref>https://www.sciencedirect.com/science/article/pii/S0032063321001768#:~:text=A%20loss%20of%200.2%25%20per,Mars%20Pathfinder%20and%20Phoenix%20missions.</ref>
		+
		+	The dust is sticky and resists being wiped clear, even if the cells are dusted off, they will still be reduced by about 1% to 2%. If washed clean they can be restored to 100% power.
		+
		+	This dust can be removed by dust devils, or strong winds. This varies greatly by location; areas with strong winds and low boundary layers are more likely to have significant cleaning. The Spirt rover was well cleaned by dust devils (Opportunity less so) but the Insight lander got no significant cleaning of its panels.
		+
		+	Earth solar cells do not have this problem for the most part. Earth is less dusty, and cells are well cleaned by occasional rain storms.

	==References==		==References==

@@ Line 41: / Line 41: @@
 |}
-==Dust Size==
+==Dust size==
 These are generally very small, only 3 micrometers in diameter.  This is so small it will enter lungs and irritate them, being difficult for the cilia to remove.  Good dust filters will be wanted in a Martian base, and waterfalls and pools may be wanted to help remove dust that enters a habitat.

← Older revision		Revision as of 23:53, 5 July 2024
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	Dust this small will wear moving parts. Any moving parts outside must be carefully sealed to prevent dust from getting into the joints.		Dust this small will wear moving parts. Any moving parts outside must be carefully sealed to prevent dust from getting into the joints.
−

	==Making bricks from dust==		==Making bricks from dust==

@@ Line 4: / Line 4: @@
-==Dust Composition==
+==Dust composition==
 The Martian dust is weathered from primarily volcanic rocks.  This can be from mechanical weathering of basalts.  But when basalt weathers in water if forms feldspar, and some dust is composed of feldspars.
@@ Line 40: / Line 40: @@
 |   || style="text-align: right;"| <b> Total</b> || style="text-align: right;"|<b>97.81</b> || Remainder unidentified
 |}
 ==Dust Size==

← Older revision		Revision as of 23:49, 5 July 2024
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		+	==Making bricks from dust==
		+	Poor quality bricks can be made with simple compression and gentle heating. See [[Brick]] for more information.
	==References==		==References==

@@ Line 17: / Line 17: @@
 | SiO2 || Silicon Dioxide || style="text-align: right;" |45.41 || Glass
 |-
-| TiO2 || Titanium(II) oxide || style="text-align: right;" |0.90 || Paint and cosmetics
+| TiO2 || Titanium(II) oxide || style="text-align: right;" |0.90 || Paint & cosmetics
 |-
 | AlO3 || Alumina or aluminum oxide || style="text-align: right;" |9.71 || Ceramics
 |-
-| FeO || Iron oxide or rust || style="text-align: right;" |16.73 || Iron and Steel
+| FeO || Iron oxide or rust || style="text-align: right;" |16.73 || Iron & Steel
 |-
-| MnO || Manganese(II) oxide || style="text-align: right;" |0.33 || Fertilizer and food additives
+| MnO || Manganese(II) oxide || style="text-align: right;" |0.33 || Fertilizer & food additives
 |-
 | MgO || Magnesium oxide or magnesiae || style="text-align: right;" |8.35 || Antacid & alloys