sin αst

14
Nomenclature
The nomenclature provides an overview of the majority of the used symbols, subscripts,
abbreviated terms and coordinate systems. It should be noted that a dot is used as decimal
point, throughout the project thesis.
Three coordinates systems are defined for the wind turbine and its components.
Wind turbine
The wind turbine system is fixed to
the tower. x is positive in the
downwind direction, z is pointing
up, y completes right hand coordi-
nate system.
Shaft
The shaft axis system rotates with
the nacelle. x is such that a positive
moment about the x axis acts in the
rotational direction. z is pointing
up, y completes right hand coordi-
nate system.
Blade
The blade axis system rotates with
the rotor. x is such that a positive
moment about the x-axis acts in
the rotational direction. y is such
that a positive moment acts to
bend the blade tip downwind. z is
positive towards the blade tip.
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