Sandworm Design - Revision history

Strangelv: /* Available Resources */ fixing image size

2016-03-31T07:18:27Z

Available Resources: fixing image size

Farred: dummy edit to remove vandalism

2012-01-14T05:08:45Z

dummy edit to remove vandalism

109.230.216.60: /* Systems */

2012-01-13T07:44:44Z

Systems

61.164.87.130: /* Cutting Head */

2012-01-12T22:37:44Z

Cutting Head

109.230.216.60: /* Power In */

2012-01-12T20:56:26Z

Power In

Farred: Undo revision 17027 by 24.61.142.2 (talk) as per discussion

2012-01-12T18:53:25Z

Undo revision 17027 by 24.61.142.2 (talk) as per discussion

24.61.142.2: /* Fluid Standing Waves */

2012-01-12T18:27:39Z

Fluid Standing Waves

Farred: Undo revision 16655 by 109.73.68.18 (talk), vandalism

2011-09-29T16:08:55Z

Undo revision 16655 by 109.73.68.18 (talk), vandalism

109.73.68.18: SyVjTm web20power.txt;1;1

2011-09-29T04:33:31Z

SyVjTm web20power.txt;1;1

Laertes at 00:08, 17 December 2008

2008-12-17T00:08:14Z

@@ Line 216: / Line 216: @@
 Five means of working the regolith and establishing the high pressure area should be compared in a trade study:
-[[Image:SandwormHead01.jpg|frame|400px|Sandworm Cutting Head, Two Views]]
+[[Image:SandwormHead01.jpg|400px|Sandworm Cutting Head, Two Views]]
 ===Cutting Head===

@@ Line 7: / Line 7: @@
 <font size=5> Details of the Sandworm Design </font>
 A lunar volatiles harvester will be the key piece of industrial equipment for the first lunar settlement.
 One possible lunar volatiles harvester design is described in [[Sandworms]].  This article continues with details of that design.  A supporting spread sheet is also available at [[Story Calculations]].
@@ Line 18: / Line 18: @@
-Is that relaly all there is to it because that'd be flabbergasting.
+==Systems==
 ==Heat Out==
@@ Line 105: / Line 218: @@
 [[Image:SandwormHead01.jpg|frame|400px|Sandworm Cutting Head, Two Views]]
-Begun, the great internet edcuaotin has.
+===Cutting Head===
 ===Mechanical Valves===

← Older revision		Revision as of 07:44, 13 January 2012
Line 18:		Line 18:


−	~~==Systems==~~	+	Is that relaly all there is to it because that'd be flabbergasting.
−
−	~~Each key system of the miner must be considered in the design and many ideas for each system must be studied and tested. The key systems of the miner are:~~
−
−	~~;Handle the Regolith: Dig it, sieve it, move it into higher pressure, move it hot, move it out of higher pressure, then dump it out the back~~
−	~~;Heat to 700 C: Heat it to drive off volatiles. Recycle 85% of this heat.~~
−	~~;Collect Volatiles: This~~ is ~~essentially a high vacuum pump.~~
−	~~;Recover Iron Fines: Save the fine iron spheres for reuse.~~
−	~~;Power System: Provide kilowatts of power and remove the waste heat.~~
−	~~;Control System: Control this complex device and communicate with Earth.~~
−	~~;Motive: Move the device forward.~~
−	~~;Build it: The miner must be easy~~ to ~~construct with lunar material substituted for material from Earth as much as possible.~~
−	~~;Maintain~~ it ~~safely: The miner must~~ be ~~easy to repair by human and robot teams.~~
−	~~;Sleep at night: It must pass the night and wake up ready for work~~
−
−
−	~~I guess finding useful, reliable information on the internet isn't hpeoelss after all~~.

	==Heat Out==		==Heat Out==

@@ Line 121: / Line 121: @@
 [[Image:SandwormHead01.jpg|frame|400px|Sandworm Cutting Head, Two Views]]
-===Cutting Head===
+Begun, the great internet edcuaotin has.
 ===Mechanical Valves===

← Older revision		Revision as of 20:56, 12 January 2012
Line 34:		Line 34:


−	~~==Power In==~~	+	I guess finding useful, reliable information on the internet isn't hpeoelss after all.
−
−	The lunar miner is a large piece of industrial equipment requiring a large amount of power to operate. The majority of this power can be used in the form of heat to drive the volatiles out of the regolith. Additionally, power is needed in the form of electricity to run the electronics, transport the regolith, ~~and drive the minor forward.~~
−
−	Solar energy is the obvious source for the lunar miner's power. It is abundant Â½ the time and is well understood. A number of possible ways to harness solar power have been discussed. Clearly a trade study is needed. The underlying physics is uncomplicated enough that such studies can be handled by students through the use of spread sheets (with some programming additions) and with ray tracing.
−
−
−	~~===Sizing Power Need===~~
−
−	~~Schmitt's numbers (pp 119) for the lunar miner are:~~
−
−	~~'''Mining power requirements'''~~
−
−	* lunar process energy (82 Gj/g of solar thermal energy) -- 12.3 MW
−	* Heat Recovery -- 85%
−	* Estimate operating electric power -- 200 KW
−
−	~~'''Mark II solar collector system'''~~
−
−	* Miner receiver dish (12 meters diameter) -- 112 m2
−	* Fixed solar reflector (110 meter diameter) -- 9500 m2
−
−	~~'''Alternative design'''~~
−
−	* Solar constant -- 1367 W/m2
−	* Concentration effectiveness -- 75%
−	* Solar panel efficiency (GaAs) -- 18.5%
−	* Solar panel output (GaAs) -- 253 W/m2
−
−	These numbers will need review as the design progresses. This level of power will require a very large solar collector supplemented with photovoltaic panels. Four physical arrangements for the solar concentrators should be considered in a trade study:
−
−
−	~~===Large Fixed Solar Relay===~~
−
−	~~In this approach a large tracking reflector is placed at fixed location some distance from the lunar miner. The large reflector relays concentrated sun light to a small receiving disk on the miner.~~
−
−	~~'''Advantages:'''~~
−
−	* The receiver disk on miner is of a manageable size.
−	* The receiver disk has a simplified tracking function.
−
−	~~'''Disadvantage:'''~~
−
−	* Inefficiency of the power relay
−	* Cost of separate installation.
−	* Cost and difficulty of construction of one large unit
−
−
−	~~===Hillside Multiple Relays===~~
−
−	~~A large number of smaller collectors are built on a hill side near the mining operation. The units are on very short towers and built with very low mass design.~~
−
−	~~'''Advantages:'''~~
−
−	* The receiver disk on miner is of a manageable size.
−	* The receiver disk has a simplified tracking function.
−	* Less mass from Earth required to build and operate
−	* Failure of any single disk does not stop mining
−
−	~~'''Disadvantage:'''~~
−
−	* Inefficiency of the power relay
−	* Cost of separate installation.
−	* Cost and difficulty of construction of many small units
−	* Availability of appropriately located hill side
−
−
−	~~===Single Full Disk on Miner===~~
−
−	~~The miner carries one large circular collector dish.~~
−
−	~~'''Advantages:'''~~
−
−	* The power does not have the relay losses.
−	* The geometry is simple and well understood
−
−	~~'''Disadvantage:'''~~
−
−	* The disk is large requiring a large moving base.
−	* The collector target moves
−
−
−	~~===Single Solar Forge Section on Miner===~~
−
−	~~A single collector consisting of only a section of a turned parabola is mounted~~ on the ~~miner.~~
−
−	~~'''Advantages:'''~~
−
−	* The power does not have the relay losses.
−	* Tracking the sun is relatively easy.
−	* The power receiver is in a fixed location.
−	* The designs supports heat rejection and easy of maintenance.
−
−	~~'''Disadvantage:''~~'
−
−	* The miner base is very large.
−	* The geometry is unusual
−

	==Heat Out==		==Heat Out==

← Older revision		Revision as of 18:53, 12 January 2012
Line 292:		Line 292:


−	~~In awe~~ of that ~~asnwer! Really cool!~~	+	===Fluid Standing Waves===
		+
		+	This is the approach intended for the HUS Model 1.0. It requires that the regolith fines act very like a liquid. This is done by the introduction of previously separated gases and iron fines. The regolith fines are moved by some combination of mechanical vibration, hot gas jets, electrostatics, and electromagnetic force on the iron fines. These actions induce two separate a standing waves. There is one standing wavy for the volatiles and one for the fines. The fines wave had four peaks that block volatile flow. The volatile standing wavy has a peak in the heating area to aide its recovery. This design is a tall order.
		+
		+	'''Strengths:'''
		+
		+	* Minimum wear inducing contact with regolith
		+	* Makes good use of lunar resources
		+
		+	'''Weaknesses:'''
		+
		+	* Poorly understood
		+	* Low 'high pressure"
		+	* Major research effort required
		+

	==More Work Needed==		==More Work Needed==

← Older revision		Revision as of 18:27, 12 January 2012
Line 292:		Line 292:


−	~~===Fluid Standing Waves===~~	+	In awe of that asnwer! Really cool!
−
−	~~This is the approach intended for the HUS Model 1.0. It requires that the regolith fines act very like a liquid. This is done by the introduction~~ of previously separated gases and iron fines. The regolith fines are moved by some combination of mechanical vibration, hot gas jets, electrostatics, and electromagnetic force on the iron fines. These actions induce two separate a standing waves. There is one standing wavy for the volatiles and one for the fines. The fines wave had four peaks that ~~block volatile flow. The volatile standing wavy has a peak in the heating area to aide its recovery. This design is a tall order.~~
−
−	~~'''Strengths:'''~~
−
−	* Minimum wear inducing contact with regolith
−	* Makes good use of lunar resources
−
−	~~'''Weaknesses:'''~~
−
−	* Poorly understood
−	* Low 'high pressure"
−	* Major research effort required
−

	==More Work Needed==		==More Work Needed==

← Older revision		Revision as of 16:08, 29 September 2011
Line 18:		Line 18:


−	~~SyVjTm web20power~~.~~txt~~;1;1	+	==Systems==
		+
		+	Each key system of the miner must be considered in the design and many ideas for each system must be studied and tested. The key systems of the miner are:
		+
		+	;Handle the Regolith: Dig it, sieve it, move it into higher pressure, move it hot, move it out of higher pressure, then dump it out the back
		+	;Heat to 700 C: Heat it to drive off volatiles. Recycle 85% of this heat.
		+	;Collect Volatiles: This is essentially a high vacuum pump.
		+	;Recover Iron Fines: Save the fine iron spheres for reuse.
		+	;Power System: Provide kilowatts of power and remove the waste heat.
		+	;Control System: Control this complex device and communicate with Earth.
		+	;Motive: Move the device forward.
		+	;Build it: The miner must be easy to construct with lunar material substituted for material from Earth as much as possible.
		+	;Maintain it safely: The miner must be easy to repair by human and robot teams.
		+	;Sleep at night: It must pass the night and wake up ready for work
		+

	==Power In==		==Power In==

← Older revision		Revision as of 04:33, 29 September 2011
Line 18:		Line 18:


−	~~==Systems==~~	+	SyVjTm web20power.txt;1;1
−
−	~~Each key system of the miner must be considered in the design and many ideas for each system must be studied and tested~~. ~~The key systems of the miner are:~~
−
−	;~~Handle the Regolith: Dig it, sieve it, move it into higher pressure, move it hot, move it out of higher pressure, then dump it out the back~~
−	;~~Heat to 700 C: Heat it to drive off volatiles. Recycle 85% of this heat.~~
−	~~;Collect Volatiles: This is essentially a high vacuum pump.~~
−	~~;Recover Iron Fines: Save the fine iron spheres for reuse.~~
−	~~;Power System: Provide kilowatts of power and remove the waste heat.~~
−	~~;Control System: Control this complex device and communicate with Earth.~~
−	~~;Motive: Move the device forward.~~
−	~~;Build it: The miner must be easy to construct with lunar material substituted for material from Earth as much as possible.~~
−	~~;Maintain it safely: The miner must be easy to repair by human and robot teams.~~
−	~~;Sleep at night: It must pass the night and wake up ready for work~~
−

	==Power In==		==Power In==

← Older revision		Revision as of 00:08, 17 December 2008
Line 1:		Line 1:
−	~~eltdeltrace~~
	[[Image:Sandworm01.jpg\|frame\| Humungous Ugly Sandworm]]		[[Image:Sandworm01.jpg\|frame\| Humungous Ugly Sandworm]]
	<BR clear="all"/>		<BR clear="all"/>