My wind turbine model in FAST has 3 blades. I changed the ‘AdjBlMs’ of blade 1 to 1.01 for setting blade mass imbalance, and saw it clearly affect the tower base moment PSD 1P at across wind direction.
However, I want to change more on 1P and set ‘AdjBlMs’ of blade 2 the same value of 1.01 as well, while kept ‘AdjBlMs’ of blade 3 still as 1. The result of 1P shows the same with my first trying (only set imbalance on 1 blade ), that is out of my expectation.
So I wonder how FAST consider the imbalance? Why change on 1 blade and on 2 blades have the same results?
Thanks in advance.