Design of horizontal axis two-bladed hinged wind turbines

Journal Article · Tue May 01 04:00:00 EDT 1984 · J. Sol. Energy Eng.; (United States)

DOI:https://doi.org/10.1115/1.3267575· OSTI ID:6339674

Hohenemser, K H; Swift, A H.P.

Hinged two-bladed wind turbines are not necessarily free of disturbing vibrations. The combination of elastic or built-in blade coning with blade flapping about a conventional teeter hinge produces periodic blade angular velocity variations in the blade tip path plane with associated vibrations and dynamic loads. The paper discusses and evaluates various hinge configurations for two-bladed rotors and shows why the conventional teeter hinge leads to nonuniform blade angular velocity in the blade tip path plane. The solution to this problem adopted for two-bladed helicopter rotors, though complex, could be of interest for large wind turbines. A much simpler solution, calling for the suppression of blade flapping by passive blade cyclic pitch variation produced by a strong negative pitch-flap coupling, was found to be practical for upwind tail vane stabilized two-bladed wind turbines.

• Research Organization: Washington Univ., St. Louis, MO
• OSTI ID: 6339674
• Journal Information: J. Sol. Energy Eng.; (United States), Journal Name: J. Sol. Energy Eng.; (United States) Vol. 106; ISSN JSEED
• Country of Publication: United States
• Language: English

Related Subjects

17 WIND ENERGY
170602* -- Wind Energy Engineering-- Turbine Design & Operation
DESIGN
MACHINERY
TURBINE BLADES
TURBINES
TURBOMACHINERY
WIND TURBINES