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Evaluation of MOSTAS computer code for predicting dynamic loads in two bladed wind turbinesCalculated dynamic blade loads were compared with measured loads over a range of yaw stiffnesses of the DOE/NASA Mod-O wind turbine to evaluate the performance of two versions of the MOSTAS computer code. The first version uses a time-averaged coefficient approximation in conjunction with a multi-blade coordinate transformation for two bladed rotors to solve the equations of motion by standard eigenanalysis. The second version accounts for periodic coefficients while solving the equations by a time history integration. A hypothetical three-degree of freedom dynamic model was investigated. The exact equations of motion of this model were solved using the Floquet-Lipunov method. The equations with time-averaged coefficients were solved by standard eigenanalysis.
Document ID
19790013378
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Kaza, K. R. V.
(Toledo Univ. Cleveland, OH, United States)
Janetzke, D. C.
(NASA Lewis Research Center Cleveland, OH, United States)
Sullivan, T. L.
(NASA Lewis Research Center)
Date Acquired
September 3, 2013
Publication Date
January 1, 1979
Subject Category
Energy Production And Conversion
Report/Patent Number
NASA-TM-79101
DOE/NASA/1028-72/2
E-9925
Meeting Information
Meeting: AIAA/ASCE/AHS 20th Structures, Structural Dynamics and Mater. Conf.
Location: St. Louis, MO
Country: United States
Start Date: April 4, 1979
End Date: April 6, 1979
Accession Number
79N21549
Funding Number(s)
CONTRACT_GRANT: E(49-26)-1028
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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