DocumentCode
1151035
Title
The outrigger: a prehistoric feedback mechanism
Author
Abramovitch, Daniel
Author_Institution
Molecular Technol. Lab, Agilent Laboratories, Palo Alto, CA, USA
Volume
25
Issue
4
fYear
2005
Firstpage
57
Lastpage
72
Abstract
The history of the outrigger, an ancient Polynesian device with a feedback mechanism, is chronicled in the paper with particular focus on its basic roll stability and the outrigger loop. The action of an outrigger is two-fold. First, the outrigger adds buoyancy to the vessel since the outriggers are made of materials that float irrespective of their shapes. More importantly, the addition of a float at the end of a boom dramatically increases the roll stability of small canoes.
Keywords
boats; feedback; spatial variables control; stability; ancient Polynesian device; buoyancy; dugout canoes; feedback mechanism; outrigger; roll stability; Boats; Clocks; Control engineering; Feedback control; Helium; History; Humans; Stability; Technological innovation; Valves;
fLanguage
English
Journal_Title
Control Systems, IEEE
Publisher
ieee
ISSN
1066-033X
Type
jour
DOI
10.1109/MCS.2005.1499391
Filename
1499391
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