CUED Publications database

Articulated wooden blades for a horizontal-axis wind turbine. Design, construction and testing.

Powles, JRS and Anderson, BM and Wilson, MAD and Platts, MJ (1982) Articulated wooden blades for a horizontal-axis wind turbine. Design, construction and testing.

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Abstract

A pair of blades were constructed following a Tapered Chord, Zero Twist pattern after Anderson. The construction uses the Wood Epoxy Saturation Technique, with a solid Beech main spar and leading edge joined together with laminated veneers of beech forming a D-section; the trailing edge is formed from millimetre ply skins, foam filled to resist compressive loads. This construction leads to an extremely light, flexible blade, with the centres of gravity and torsion well forward, giving good stability. Each blade has three built-in strain gauges, alowing flapwise bending to be measured. Stiffness, and natural frequencies, were measured, to input to a numerical computer model to calculate blade deformation during operation, and to determine stability boundaries of the blade. Preliminary aerodynamic performance measurements are presented and close agreement is found with theory.

Item Type: Article
Subjects: UNSPECIFIED
Divisions: Div E > Production Processes
Depositing User: Unnamed user with email sms67@cam.ac.uk
Date Deposited: 18 May 2016 19:10
Last Modified: 28 May 2016 22:45
DOI: