Tether: Difference between revisions
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{{Other uses}} |
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A '''tether''' is a cord, fixture, or flexible attachment that anchors something movable to a reference point which may be fixed or moving. There are a number of applications for tethers: balloons, kites, [[High-altitude wind power|tethered wind-energy conversion systems]], [[anchor]]s, tethered water-flow energy conversion systems, towing, [[Leash|animal constraint]], [[Space tether|spaceflight]], and [[Power kite|power-kiting]]. Also, tethering to prevent theft of an object like a computer at a school or library is now commonly seen.<ref>{{cite book| |
A '''tether''' is a cord, fixture, or flexible attachment that anchors something movable to a reference point which may be fixed or moving. There are a number of applications for tethers: balloons, kites, [[High-altitude wind power|tethered wind-energy conversion systems]], [[anchor]]s, tethered water-flow energy conversion systems, towing, [[Leash|animal constraint]], [[Space tether|spaceflight]], and [[Power kite|power-kiting]]. Also, tethering to prevent theft of an object like a computer at a school or library is now commonly seen.<ref>{{cite book|author=ed. by Seymour Bosworth|title=Computer Security Handbook|year=2002|publisher=Wiley|location=New York, NY|isbn=978-0-471-41258-8|url=https://books.google.com/books?id=JDXB8WTppk0C&lpg=RA2-PA19&dq=tethers%20theft-prevention&pg=RA2-PA20#v=onepage&q=tether&f=false|page=19}}</ref> |
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==Failures== |
==Failures== |
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Tethers may break by various means; if a tether is a signal, then interruption by signal barriers breaks the tether.{{elucidate|date=September 2014}} If the tether is a cord or rope, then upon reaching the [[breaking strength]] of the tether, the tether fails in its function. [[Failure mode]]s for tethers are considered when designing arrangements where a tether is needed.<ref>{{cite book|last=Bekey|first=Ivan|title=Advanced Space System Concepts and Technologies, 2010-2030+|year=2003|publisher=Aerospace Press |
Tethers may break by various means; if a tether is a signal, then interruption by signal barriers breaks the tether.{{elucidate|date=September 2014}} If the tether is a cord or rope, then upon reaching the [[breaking strength]] of the tether, the tether fails in its function. [[Failure mode]]s for tethers are considered when designing arrangements where a tether is needed.<ref>{{cite book|last=Bekey|first=Ivan|title=Advanced Space System Concepts and Technologies, 2010-2030+|year=2003|publisher=Aerospace Press; American Institute of Aeronautics and Astronautics|location=El Segundo, Calif. : Reston, Va.|isbn=978-1-884989-12-4|url=https://books.google.com/books?id=S4u1UgfxnHcC&pg=PA33&dq=tethers#v=onepage&q=tethers&f=false|page=33}}</ref> When a tether or line breaks suddenly, backlash of the segments may cause severe damage or loss of life. [[Safety link]]s are sometimes used to prevent excessive tension in a tether involved in towing objects or persons, like in the towing of [[sailplane]]s; the safety link in a tether is thus a tether itself.{{elucidate|date=September 2014}} |
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==See also== |
==See also== |
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Revision as of 14:30, 31 January 2018
A tether is a cord, fixture, or flexible attachment that anchors something movable to a reference point which may be fixed or moving. There are a number of applications for tethers: balloons, kites, tethered wind-energy conversion systems, anchors, tethered water-flow energy conversion systems, towing, animal constraint, spaceflight, and power-kiting. Also, tethering to prevent theft of an object like a computer at a school or library is now commonly seen.[1]
Failures
Tethers may break by various means; if a tether is a signal, then interruption by signal barriers breaks the tether.[further explanation needed] If the tether is a cord or rope, then upon reaching the breaking strength of the tether, the tether fails in its function. Failure modes for tethers are considered when designing arrangements where a tether is needed.[2] When a tether or line breaks suddenly, backlash of the segments may cause severe damage or loss of life. Safety links are sometimes used to prevent excessive tension in a tether involved in towing objects or persons, like in the towing of sailplanes; the safety link in a tether is thus a tether itself.[further explanation needed]
See also
References
- ^ ed. by Seymour Bosworth (2002). Computer Security Handbook. New York, NY: Wiley. p. 19. ISBN 978-0-471-41258-8.
{{cite book}}:|author=has generic name (help) - ^ Bekey, Ivan (2003). Advanced Space System Concepts and Technologies, 2010-2030+. El Segundo, Calif. : Reston, Va.: Aerospace Press; American Institute of Aeronautics and Astronautics. p. 33. ISBN 978-1-884989-12-4.
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