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A '''tether''' is a cord, fixture, or flexible attachment that characteristically anchors something movable to something fixed; it also maybe used to connect two movable objects, such as an item being [[towing|towed]] by its tow. |
A '''tether''' is a cord, fixture, or flexible attachment that characteristically anchors something movable to something fixed; it also maybe used to connect two movable objects, such as an item being [[towing|towed]] by its tow. |
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Applications for tethers include: [[fall arrest system]]s, balloons, kites, [[airborne wind power|airborne wind-power systems]], [[anchor]]s, floating water power systems, towing, [[leash|animal constraint]], [[space tether|space walks]], |
Applications for tethers include: [[fall arrest system]]s, [[lanyards]], balloons, kites, [[airborne wind power|airborne wind-power systems]], [[anchor]]s, floating water power systems, towing, [[leash|animal constraint]], [[space tether|space walks]], [[power kite]]ing, and [[anti-theft]] devices.<ref>{{cite book|editor-first1=Seymour|editor-last1=Bosworth|editor-first2=M. E.|editor-last2=Kabay|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&q=tether&pg=RA2-PA20|page=19}}</ref> |
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==Failure== |
==Failure== |
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Revision as of 06:56, 12 September 2021
A tether is a cord, fixture, or flexible attachment that characteristically anchors something movable to something fixed; it also maybe used to connect two movable objects, such as an item being towed by its tow.
Applications for tethers include: fall arrest systems, lanyards, balloons, kites, airborne wind-power systems, anchors, floating water power systems, towing, animal constraint, space walks, power kiteing, and anti-theft devices.[1]
Failure
Failure modes for tethers are considered in their design.[2] A cord or rope tether may reach its breaking strength and fail. Outcomes can include an injury or fatal fall, and damage or loss of life to personnel or bystanders caused by backlash of the ruptured segments.
Designed-to-fail safety links are sometimes used to prevent excessive tension in a tether involved in towing objects, such as sailplanes.
A signal tether is a system where a constant signal designates a positive condition, and its interruption, whether by discontinuation or jamming, conveys a failure. The signal may be electrically generated, or a physical device such as flying a flag.
See also
References
- ^ Bosworth, Seymour; Kabay, M. E., eds. (2002). Computer Security Handbook. New York, NY: Wiley. p. 19. ISBN 978-0-471-41258-8.
- ^ 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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