Question INSTRUCTIONS
Need 3D design with Solid work of a 3 Bladed wind turbine. 120 degrees apart from each
other, That the blade geometry and the airfoil coordinate
Kindly take a screenshot of each step. Student need it to prepare a technical report./nTable A-1. Blade chord and twist distributions
Radial
Distance r
Span
Span
Chord
Twist'
Station'
Station'
Length
(degrees)
(m)
Thickness
Twist Axis
(% chord)
(m)
(r/5.532 m)
(r/5.029 m)
(m)
0.0
0.0
0.0
Hub-center
Hub-center
of rotation
of rotation
rotation
0.508
0.092
0.101
0.218 (root
hub adapter)
0.0 (root hub
adapter)
0.218
Hub-center of
Hub-center
of rotation
50 (root hub
adapter)
0.660
0.120
0.131
0.218
0.0
0.218
50
0.883
0.160
0.176
0.183
0.0
0.183
50
1.008
0.183
0.200
0.349
6.7
0.163
35.9
1.067
0.193
0.212
0.441
9.9
0.154
33.5
1.133
0.205
0.225
0.544
13.4
0.154
31.9
1.257
0.227
0.250
0.737
20.040
0.154
30
1.343
0.243
0.267
0.728
18.074
20.95% chord
30
1.510
0.273
0.300
0.711
14.292
20.95% chord
30
1.648
0.298
0.328
0.697
11.909
20.95% chord
30
1.952
0.353
0.388
0.666
7.979
20.95% chord 30
2.257
0.408
0.449
0.636
5.308
20.95% chord 30
2.343
0.424
0.466
0.627
4.715
20.95% chord
30
2.562
0.463
0.509
0.605
3.425
2.867
0.518
0.570
0.574
2.083
3.172
0.573
0.631
0.543
1.150
3.185
0.576
0.633
0.542
1.115
20.95% chord 30
20.95% chord 30
20.95% chord 30
20.95% chord 30
3.476
0.628
0.691
0.512
0.494
20.95% chord
30
3.781
0.683
0.752
0.482
-0.015
20.95% chord
30
4.023
0.727
0.800
0.457
-0.381
20.95% chord
30
4.086
0.739
0.812
0.451
-0.475
20.95% chord
30
4.391
0.794
0.873
0.420
-0.920
4.696
0.849
0.934
0.389
-1.352
4.780
0.864
0.950
0.381
-1.469
5.000
0.904
0.994
0.358
-1.775
5.305
0.959
1.055
0.328
-2.191
5.532
1.000
1.100
0.305
-2.500
20.95% chord 30
20.95% chord 30
20.95% chord 30
20.95% chord 30
20.95% chord 30
20.95% chord 30
The blade radius is modified by changing the tip piece.
Twist convention is positive towards feather. Values listed are relative to zero twist at the 3.772-m station [75% span on a 5.029-m
blade]. Twist is 2.5 degrees toward stall at the tip [on a 5.532-m blade].
Each blade attaches to the hub at a point 0.508 m from the center of rotation.
*There is a cylindrical section at the root that extends from 0.508 to 0.883 m. The airfoil transition begins at approximately the 0.883-
m radial station.
There is a transition from the cylindrical section to the S809 airfoil along the 0.883- to 1.257-m region. The transition ends with a
0.737-m chord S809 airfoil at the 1.257-m span station.
⚫Airfoil distribution: Except for the root [0 to 1.257 m, the blade uses the S809 at all span
locations. The airfoil coordinates are shown in Table A-2, and the root is depicted in Figure
A-2./nTable A-2. Airfoil profile coordinates
Upper Surface
x/c
Lower Surface
у/с
x/c
y/c
0.00140 -0.00498
0.00037 0.00275
0.00575 0.01166 0.00933 -0.01272
0.01626 0.02133 0.02321 -0.02162
0.03158 0.03136 0.04223 -0.03144
0.05147 0.04143 0.06579 -0.04199
0.07568 0.05132 0.09325 -0.05301
0.10390 0.06082 0.12397 -0.06408
0.13580 0.06972 0.15752 -0.07467
0.17103 0.07786 0.19362 -0.08447
0.20920 0.08505 0.23175 -0.09326
0.24987 0.09113 0.27129 -0.10060
0.29259 0.09594 0.31188 -0.10589
0.33689 0.09933 0.35328 -0.10866
0.38223 0.10109 0.39541 -0.10842
0.42809 0.10101 0.43832 -0.10484
0.47384 0.09843 0.48234 -0.09756
0.52005 0.09237 0.52837 -0.08697
0.56801 0.08356 0.57663 -0.07442
0.61747 0.07379 0.62649 -0.06112
0.66718 0.06403 0.67710 -0.04792
0.71606 0.05462 0.72752 -0.03558
0.76314 0.04578 0.77668 -0.02466
0.80756 0.03761 0.82348 -0.01559
0.84854 0.03017 0.86677 -0.00859
0.88537 0.02335 0.90545 -0.00370
0.91763 0.01694 0.93852 -0.00075
0.94523 0.01101 0.96509 0.00054
0.96799 0.00600 0.98446 0.00065
0.98528 0.00245 0.99612 0.00024
0.99623 0.00054 1.00000 0.00000
1.00000 0.00000 0.00000 0.00000
(Source: Butterfield et. al, 1992)
