Mechanical energy transmission - Revision history

Apm at 20:07, 18 October 2024

2024-10-18T20:07:36Z

← Older revision		Revision as of 22:07, 18 October 2024
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	Note: [[Friction in gem-gum technology]] scales actually quadratically with speed so naive nanoscale [[Atomically precise bearings]] ([[Atomically precise slide bearings]] in particular) need to be run pretty slowly. Proposal for advanced productive nanosystems in [[nanosystems]] was at around 5mm/s.		Note: [[Friction in gem-gum technology]] scales actually quadratically with speed so naive nanoscale [[Atomically precise bearings]] ([[Atomically precise slide bearings]] in particular) need to be run pretty slowly. Proposal for advanced productive nanosystems in [[nanosystems]] was at around 5mm/s.
	To get to low bearing losses of the etremely high speeds mentioned here (up to ~3km/s) some fancy advanced bearing technologies will be needed.		To get to low bearing losses of the etremely high speeds mentioned here (up to ~3km/s) some fancy advanced larger scale bearing technologies will be needed.
	* [[Infinitesimal bearing]]s can help, but only so much.		* [[Infinitesimal bearing]]s can help, but only so much.
	* [[Atomically precise roller gearbearing]]s can help, but only so much.		* [[Atomically precise roller gearbearing]]s can help, but only so much.

Apm: asses "may be too optimistic" warning at beginning of the page

2024-10-18T20:06:17Z

asses "may be too optimistic" warning at beginning of the page

← Older revision		Revision as of 22:06, 18 October 2024
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	Overall an as of yet unclear combination of all these may do the trick. <br>		Overall an as of yet unclear combination of all these may do the trick. <br>
	Also there is always the possibility of combining [[mechanical energy transmission]] with <br>		Also there is always the possibility of combining [[mechanical energy transmission]] with <br>
	[[chemical energy transmission]] or ~~ebven~~ going solely for the latter. <br>		[[chemical energy transmission]] or even going solely for the latter. <br>

			{{speculativity warning}} <br>
			As it is ATM this article may be too optimistic and might need some review.

	= Mechanical energy transmission cables =		= Mechanical energy transmission cables =

Apm at 20:03, 18 October 2024

2024-10-18T20:03:34Z

← Older revision		Revision as of 22:03, 18 October 2024
Line 6:		Line 6:

	Note: [[Friction in gem-gum technology]] scales actually quadratically with speed so naive nanoscale [[Atomically precise bearings]] ([[Atomically precise slide bearings]] in particular) need to be run pretty slowly. Proposal for advanced productive nanosystems in [[nanosystems]] was at around 5mm/s.		Note: [[Friction in gem-gum technology]] scales actually quadratically with speed so naive nanoscale [[Atomically precise bearings]] ([[Atomically precise slide bearings]] in particular) need to be run pretty slowly. Proposal for advanced productive nanosystems in [[nanosystems]] was at around 5mm/s.
	To get to low bearing losses of the ~~very~~ high speeds mentioned here some fancy advanced bearing technologies will be needed.		To get to low bearing losses of the etremely high speeds mentioned here (up to ~3km/s) some fancy advanced bearing technologies will be needed.
	* [[Infinitesimal bearing]]s can help, but only so much.		* [[Infinitesimal bearing]]s can help, but only so much.
	* [[Atomically precise roller gearbearing]]s can help, but only so much.		* [[Atomically precise roller gearbearing]]s can help, but only so much.

Apm: added intro note on bearing friction

2024-10-18T20:02:10Z

added intro note on bearing friction

@@ Line 4: / Line 4: @@
 [[File:640px-AHW Kammgarnspinnerei Pfaffendorf Leipzig um 1925.jpg|400px|thumb|right|'''Historical image of mechanical energy transmission rotative via axles and translative belts''' of a spinning mill factory in Germany (~1925). – Systems of the future made with [[gemstone metamaterial technology]] will look quite a bit different, possibly in flexible cables, be completely silent and suffer only minor degradation over time. Degradation mostly from cosmic rays which occurs no matter whether the system runs or not. – All scales are imaginable from home utility cables all the way to cross continental and undersea cables. –
 {{wikitodo|Add a sketch of a cross section of a possible future cable design.}}]]
 = Mechanical energy transmission cables =

Apm: /* Related / added backlink The challenge of high speeds near nanoscale

2024-09-15T16:07:24Z

Related: added backlink * The challenge of high speeds near nanoscale

← Older revision		Revision as of 18:07, 15 September 2024
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	* [[Pages with math]]		* [[Pages with math]]
	* [[Large scale construction]]		* [[Large scale construction]]
			* [[The challenge of high speeds near nanoscale]]

	== External links (wikipedia) ==		== External links (wikipedia) ==

Apm: /* Related */ energy transmission

2023-06-25T06:39:18Z

Related: energy transmission

← Older revision		Revision as of 08:39, 25 June 2023
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	== Related ==		== Related ==


			* '''up: [[energy transmission]]'''
	* '''[[superlube tubes]]'''		* '''[[superlube tubes]]'''
	* [[global scale energy management]]		* [[global scale energy management]]

Apm: added a wikitodo

2022-08-11T16:06:34Z

added a wikitodo

← Older revision		Revision as of 18:06, 11 August 2022
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	Up: [[Energy transmission]]		Up: [[Energy transmission]]
	----		----
	[[File:640px-AHW Kammgarnspinnerei Pfaffendorf Leipzig um 1925.jpg\|400px\|thumb\|right\|Historical image of mechanical energy transmission rotative via axles and translative belts of a spinning mill factory in Germany (~1925). – Systems of the future made with [[gemstone metamaterial technology]] will look quite a bit different, possibly in flexible cables, be completely silent and suffer only minor degradation over time. Degradation mostly from cosmic rays which occurs no matter whether the system runs or not. – All scales are imaginable from home utility cables all the way to cross continental and undersea cables.]]		[[File:640px-AHW Kammgarnspinnerei Pfaffendorf Leipzig um 1925.jpg\|400px\|thumb\|right\|'''Historical image of mechanical energy transmission rotative via axles and translative belts''' of a spinning mill factory in Germany (~1925). – Systems of the future made with [[gemstone metamaterial technology]] will look quite a bit different, possibly in flexible cables, be completely silent and suffer only minor degradation over time. Degradation mostly from cosmic rays which occurs no matter whether the system runs or not. – All scales are imaginable from home utility cables all the way to cross continental and undersea cables. –
			{{wikitodo\|Add a sketch of a cross section of a possible future cable design.}}]]

	= Mechanical energy transmission cables =		= Mechanical energy transmission cables =

Apm: added image of historical mechanical energy transmission

2022-08-11T16:04:03Z

added image of historical mechanical energy transmission

← Older revision		Revision as of 18:04, 11 August 2022
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	Up: [[Energy transmission]]		Up: [[Energy transmission]]
	----		----
			[[File:640px-AHW Kammgarnspinnerei Pfaffendorf Leipzig um 1925.jpg\|400px\|thumb\|right\|Historical image of mechanical energy transmission rotative via axles and translative belts of a spinning mill factory in Germany (~1925). – Systems of the future made with [[gemstone metamaterial technology]] will look quite a bit different, possibly in flexible cables, be completely silent and suffer only minor degradation over time. Degradation mostly from cosmic rays which occurs no matter whether the system runs or not. – All scales are imaginable from home utility cables all the way to cross continental and undersea cables.]]

	= Mechanical energy transmission cables =		= Mechanical energy transmission cables =

Apm: /* Quantitative numbers – friction power losses */ some improvements

2022-08-11T15:07:42Z

Quantitative numbers – friction power losses: some improvements

← Older revision		Revision as of 17:07, 11 August 2022
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	* drops power transmission by 1/10th to 1.41GW and <br>		* drops power transmission by 1/10th to 1.41GW and <br>
	* drops losses by 1/100th to {0.0016%\|0.072%}/1000km <br>		* drops losses by 1/100th to {0.0016%\|0.072%}/1000km <br>

	~~Note that this is assuming a continuous sheath of [[atomically precise slide bearing]]s (as [[infinitesimal bearing]] metamaterial) <br>~~
	~~Instead going to an (at some scale) intermittent support by [[atomically precise roller gearbearing]]s should drop the friction losses further by a huge factor.~~
	----		----
	If true then these are superb results.		If true then these are superb results. <br>
	{{todo\|Compare that with the specs of '''[[overhead and underground power lines of today]]'''}}<br>		{{todo\|Compare that with the specs of '''[[overhead and underground power lines of today]]'''}}<br>
	{{todo\|Investigate reachable efficiencies with AP roller gearbearings}}		{{todo\|Investigate reachable efficiencies with AP roller gearbearings}}
			----
			Note that the final numbers here assume a continuous sheath of [[atomically precise slide bearing]]s (as [[infinitesimal bearing]] metamaterial) <br>
			Instead going to an (at some scale) intermittent support by [[atomically precise roller gearbearing]]s should drop the friction losses further by a huge factor. Or Allow notably higher speeds without exceedingly high losses.

	== Sharp turns – slow speeds ==		== Sharp turns – slow speeds ==

Apm: /* Quantitative numbers – friction power losses */

2022-08-11T15:04:42Z

Quantitative numbers – friction power losses

← Older revision		Revision as of 17:04, 11 August 2022
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	----		----
	* <math> A_{bearing} / l_{cable} = 2 \pi ~ r_{cable} ~ n_{layers} = 31400 m^2/m </math> - disregarding t<sub>bearing</sub>		* <math> A_{bearing} / l_{cable} = 2 \pi ~ r_{cable} ~ n_{layers} = 31400 m^2/m </math> - disregarding t<sub>bearing</sub>
	* <math> \rho_{dynfric} = (P_{loss}/(A_{bearing} ~ v_{layer}^2)) = \{23\\|1000\} W/(m^2(m/s)^2)</math> - dynamic friction coefficients - two cases		* <math> \rho_{dynfric} = (P_{loss}/(A_{bearing} ~ v_{layer}^2)) = \{23\\|1000\} W/(m^2(m/s)^2)</math> - dynamic friction coefficients - two cases (see: [[Friction in gem-gum technology]])
	* <math> P_{loss} / l_{cable} = A_{bearing} / l_{cable} ~ v_{layer}^2 ~ \rho_{dynfric} = \{2.34mW\\|102W\}/m</math>		* <math> P_{loss} / l_{cable} = A_{bearing} / l_{cable} ~ v_{layer}^2 ~ \rho_{dynfric} = \{2.34mW\\|102W\}/m</math>
	----		----