Title :
The outrigger: a prehistoric feedback mechanism
Author :
Abramovitch, Daniel
Author_Institution :
Molecular Technol. Lab, Agilent Laboratories, Palo Alto, CA, USA
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;
Journal_Title :
Control Systems, IEEE
DOI :
10.1109/MCS.2005.1499391