Kaza, Krishna Rao V. <br/><br/>
Nonlinear aerolastic equations of motion of twisted, nonuniform, flexible horizontal-axis wind turbine blades /  
Krisha Rao V. Kaza 
 - Cleveland :   National Aeronautics and Space Administration,   1980 Washington :   United States Department of Energy,   1980 
 - 68 p. :   figuras 
 - DOE/NASA .
<br/><br/> Informe/número de patente NASA CR-159502  DOE/NASA/3139-1 
<br/><br/>The second-degree nonlinear equations of motion for a flexible, twisted, nonuniform, horizontal axis wind turbine blade were developed using Hamilton's principle. A mathematical ordering scheme which was consistent with the assumption of a slender beam was used to discard some higher-order elastic and inertial terms in the second-degree nonlinear equations. The blade aerodynamic loading which was employed accounted for both wind shear and tower shadow and was obtained from strip theory based on a quasi-steady approximation of two-dimensional, incompressible, unsteady, airfoil theory. The resulting equations had periodic coefficients and were suitable for determining the aeroelastic stability and response of large horizontal-axis wind turbine blades. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>ENERGIA EOLICA<br/>TURBINAS EOLICAS<br/>PRODUCCION DE ENERGIA<br/>CONVERSION DE ENERGIA<br/>ECUACIONES NO LINEALES
<br/><br/><label>Universal Decimal Class. No.: </label>621.548