Electrodynamic tether | Wikipedia audio article
Channel: wikipedia tts
Date: 15/01/2019

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Electrodynamic_tether


00:00:32 1 Tether propulsion
00:01:13 2 Uses for ED tethers
00:02:02 3 Electrodynamic tether fundamentals
00:10:31 4 Tethers as generators
00:11:41 4.1 Voltage and current
00:12:32 4.2 Voltage across conductor
00:13:06 4.3 Current in conductor
00:14:07 4.4 Tether current
00:15:59 5 Current collection / emission for an EDT system: theory and technology
00:17:14 5.1 Bare conductive tethers
00:19:01 5.1.1 Orbit motion limited (OML) theory
00:19:49 5.1.2 Deviations from OML theory in a non-flowing plasma
00:22:35 5.1.3 Flowing plasma effect
00:23:31 5.2 Endbody collection
00:24:06 5.2.1 Passive collection theory
00:24:56 5.2.2 Flowing plasma electron collection mode
00:25:20 5.2.3 Flowing plasma ion collection model
00:25:57 5.2.4 Porous endbodies
00:27:08 5.2.5 Other current collection methods
00:28:20 5.3 Space charge limits across plasma sheaths
00:28:45 5.4 Electron emitters
00:29:21 5.4.1 Thermionic cathode (TC)
00:29:49 5.4.2 Electron field emitter arrays (FEAs)
00:32:57 5.4.3 Hollow cathode
00:34:42 5.4.4 Plasma collection and emission summary
00:36:53 6 Electrodynamic tether system fundamentals
00:40:09 6.1 Bare tether system derivation
00:41:05 6.1.1 Derivations
00:41:59 7 Interstellar travel
00:47:20 8 See also
00:49:44 9 References
00:50:42 10 Further reading



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SUMMARY
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Electrodynamic tethers (EDTs) are long conducting wires, such as one deployed from a tether satellite, which can operate on electromagnetic principles as generators, by converting their kinetic energy to electrical energy, or as motors, converting electrical energy to kinetic energy. Electric potential is generated across a conductive tether by its motion through a planet's magnetic field.
A number of missions have demonstrated electrodynamic tethers in space, most notably the  TSS-1, TSS-1R, and  Plasma Motor Generator (PMG) experiments.