Wind turbine blade with narrow shoulder and relatively thick airfoil profiles
A technology of wind turbine and relative thickness, which is applied to wind turbines, wind turbines, motors, etc., which are consistent with the wind direction, can solve the problem that the blades of the wind turbine model cannot be replaced, and achieve the effect of reducing storm load and low trailing edge curvature.
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[0076] Examples of wind turbine blades according to the invention are given below.
[0077] A wind turbine blade is provided with the following parameters regarding length, shoulder width, minimum radius of curvature for the trailing edge and root cylinder diameter:
[0078] parameter size L 42.13m L w 8.5m W 2.975m r o 10.3m r i 11.3m D 1.893m
[0079] Table 1
[0080] Chord length c, relative thickness t / c, and pre-bending Δy The distribution of is listed in Table 2:
[0081]
[0082] Table 2
[0083] The wind turbine blade comprises six novel blade profiles 41-46 located at different longitudinal positions along the blade and such as figure 2 shown. Table 3 lists the relative thickness t / c of the profile and the position d of the maximum thickness t / c, position d of maximum pressure side camber p / c and approximate radial position r:
[0084] airfoil reference mark t / c d t / c d p / c r ...
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