Table 2: Comparison of blade hub bending moments.

ConfigurationsRPMHub moment (mean)
[N*m] *10−7
Hub moment (peak)
[N*m] *10−7
(Peak − mean)/mean (%)

UW/3BLD12.11.321.264.5
DW/3BLD12.11.250.8829.6
UW/2BLD12.11.431.355.6
DW/2BLD12.11.350.9331.1
UW/2BLD161.941.854.6
DW/2BLD162.121.6721.2