Page 25 - Wind Energy Handbook
P. 25
Axis definitions
z is radially outwards from the hub centre along the
blade axis
x is perpendicular to the blade axis, and in the plane
passing through the blade and shaft axis – in the
downwind direction
y is perpendicular to the blade and shaft axes, to give
y a right-hand co-ordinate system
NB: Although shaft is tilt and rotor coning are not shown
F y on the sketch, the axis definitions given accommodate
both these variants
M y
x
F x
M x
M z
F z
z
Figure C1 Co-ordinate System for Blade Loads, Positions and Deflections (rotates with
blade) NB: Although shaft tilt and rotor coning are not shown on the sketch, the axis
definitions given accommodate both these variants.
