A blade of a rotor craft, the blade comprising a blade root (16), a blade tip (17), and an upper aerofoil (18) and a lower aerofoil (19) disposed vertically opposite to each other, wherein one sides of the upper aerofoil (18) and the lower aerofoil (19) are connected to form a front edge (11), other sides of the upper aerofoil and the lower aerofoil are connected to form a tail edge (12), the upper aerofoil (18) is defined by an upper aerofoil characteristic line formed by (kx, ky, kz) defined by a plurality of coordinate pairs (x, y, z), the lower aerofoil (19) is defined by a lower aerofoil characteristic line formed by (kx, ky, kz) defined by a plurality of coordinate pairs (x, y, z), and the upper aerofoil characteristic line and the lower aerofoil characteristic line are defined according to following tables:
- Upper aerofoil characteristic line e
- Upper aerofoil characteristic line g
- Upper aerofoil characteristic line j
- x
- y
- z
- x
- y
- z
- x
- y
- z
- 113.58400
- −11.88320
- 2.79067
- 157.55200
- −10.24080
- 1.79086
- 196.94000
- −10.29820
- 1.43389
- 113.58400
- −11.77610
- 2.91754
- 157.55200
- −10.15950
- 1.89922
- 196.94000
- −10.23250
- 1.52494
- 113.58400
- −11.46230
- 3.10200
- 157.55200
- −9.91255
- 2.06417
- 196.94000
- −10.02740
- 1.66809
- 113.58400
- −10.98050
- 3.25954
- 157.55200
- −9.52751
- 2.21508
- 196.94000
- −9.70404
- 1.80392
- 113.58400
- −10.33370
- 3.37583
- 157.55200
- −9.00615
- 2.34012
- 196.94000
- −9.26354
- 1.92207
- 113.58400
- −9.52457
- 3.45183
- 157.55200
- −8.35072
- 2.43996
- 196.94000
- −8.70785
- 2.02317
- 113.58400
- −8.55966
- 3.47650
- 157.55200
- −7.56599
- 2.50530
- 196.94000
- −8.04075
- 2.09930
- 113.58400
- −7.44593
- 3.44784
- 157.55200
- −6.65755
- 2.53419
- 196.94000
- −7.26694
- 2.14861
- 113.58400
- −6.19462
- 3.36224
- 157.55200
- −5.63438
- 2.52314
- 196.94000
- −6.39400
- 2.16788
- 113.58400
- −4.81762
- 3.21894
- 157.55200
- −4.50614
- 2.47100
- 196.94000
- −5.43013
- 2.15579
- 113.58400
- −3.33128
- 3.01760
- 157.55200
- −3.28611
- 2.37672
- 196.94000
- −4.38664
- 2.11101
- 113.58400
- −1.75295
- 2.75910
- 157.55200
- −1.98849
- 2.24019
- 196.94000
- −3.27562
- 2.03301
- 113.58400
- −0.10233
- 2.44542
- 157.55200
- −0.62940
- 2.06210
- 196.94000
- −2.11088
- 1.92186
- 113.58400
- 1.60038
- 2.07915
- 157.55200
- 0.77458
- 1.84363
- 196.94000
- −0.90659
- 1.77801
- 113.58400
- 3.33284
- 1.66357
- 157.55200
- 2.20510
- 1.58640
- 196.94000
- 0.32155
- 1.60228
- 113.58400
- 5.07381
- 1.20659
- 157.55200
- 3.64465
- 1.29665
- 196.94000
- 1.55849
- 1.40008
- 113.58400
- 6.79966
- 0.71417
- 157.55200
- 5.07381
- 0.97894
- 196.94000
- 2.78763
- 1.17540
- 113.58400
- 8.48807
- 0.19246
- 157.55200
- 6.47412
- 0.63715
- 196.94000
- 3.99309
- 0.93087
- 113.58400
- 10.11600
- −0.34878
- 157.55200
- 7.82630
- 0.27797
- 196.94000
- 5.15819
- 0.67142
- 113.58400
- 11.66310
- −0.89760
- 157.55200
- 9.11321
- −0.09004
- 196.94000
- 6.26801
- 0.40352
- 113.58400
- 13.10850
- −1.44033
- 157.55200
- 10.31720
- −0.45705
- 196.94000
- 7.30713
- 0.13467
- 113.58400
- 14.43440
- −1.96134
- 157.55200
- 11.42290
- −0.81150
- 196.94000
- 8.26209
- −0.12618
- 113.58400
- 15.62290
- −2.44856
- 157.55200
- 12.41510
- −1.14480
- 196.94000
- 9.11955
- −0.37258
- 113.58400
- 16.65660
- −2.89249
- 157.55200
- 13.27910
- −1.45043
- 196.94000
- 9.86679
- −0.59975
- 113.58400
- 17.51940
- −3.28980
- 157.55200
- 14.00170
- −1.72682
- 196.94000
- 10.49230
- −0.80704
- 113.58400
- 18.19240
- −3.62849
- 157.55200
- 14.56660
- −1.96550
- 196.94000
- 10.98220
- −0.98811
- 113.58400
- 18.66530
- −3.87812
- 157.55200
- 14.96430
- −2.14251
- 196.94000
- 11.32720
- −1.12323
- 113.58400
- 18.94280
- −4.02223
- 157.55200
- 15.19750
- −2.24439
- 196.94000
- 11.52950
- −1.20092
- 113.58400
- 19.03400
- −4.06770
- 157.55200
- 15.27400
- −2.27632
- 196.94000
- 11.59580
- −1.22517
- Lower aerofoil characteristic line e
- Lower aerofoil characteristic line g
- Lower aerofoil characteristic line j
- x
- y
- z
- x
- y
- z
- x
- y
- z
- 113.58400
- −11.88320
- 2.79067
- 157.55200
- −10.24080
- 1.79086
- 196.94000
- −10.29820
- 1.43389
- 113.58400
- −11.83620
- 2.66095
- 157.55200
- −10.19640
- 1.68741
- 196.94000
- −10.25670
- 1.35074
- 113.58400
- −11.59980
- 2.51515
- 157.55200
- −9.99698
- 1.57975
- 196.94000
- −10.08270
- 1.26967
- 113.58400
- −11.18610
- 2.38183
- 157.55200
- −9.65378
- 1.49057
- 196.94000
- −9.78671
- 1.20803
- 113.58400
- −10.60200
- 2.23039
- 157.55200
- −9.17094
- 1.39461
- 196.94000
- −9.37143
- 1.14442
- 113.58400
- −9.84782
- 2.07165
- 157.55200
- −8.54928
- 1.30069
- 196.94000
- −8.83785
- 1.08615
- 113.58400
- −8.92789
- 1.90433
- 157.55200
- −7.79218
- 1.20755
- 196.94000
- −8.18883
- 1.03194
- 113.58400
- −7.84931
- 1.72554
- 157.55200
- −6.90533
- 1.11251
- 196.94000
- −7.42917
- 0.97933
- 113.58400
- −6.62327
- 1.53206
- 157.55200
- −5.89768
- 1.01241
- 196.94000
- −6.56639
- 0.92535
- 113.58400
- −5.26231
- 1.32031
- 157.55200
- −4.77928
- 0.90377
- 196.94000
- −5.60897
- 0.86679
- 113.58400
- −3.78320
- 1.08804
- 157.55200
- −3.56371
- 0.78396
- 196.94000
- −4.56839
- 0.80101
- 113.58400
- −2.20399
- 0.83331
- 157.55200
- −2.26554
- 0.65054
- 196.94000
- −3.45702
- 0.72557
- 113.58400
- −0.54493
- 0.55564
- 157.55200
- −0.90127
- 0.50219
- 196.94000
- −2.28888
- 0.63887
- 113.58400
- 1.17301
- 0.25443
- 157.55200
- 0.51207
- 0.33742
- 196.94000
- −1.07846
- 0.53919
- 113.58400
- 2.92693
- −0.06952
- 157.55200
- 1.95577
- 0.15582
- 196.94000
- 0.15831
- 0.42566
- 113.58400
- 4.69407
- −0.41478
- 157.55200
- 3.41125
- −0.04252
- 196.94000
- 1.40556
- 0.29785
- 113.58400
- 6.45011
- −0.77825
- 157.55200
- 4.85854
- −0.25622
- 196.94000
- 2.64624
- 0.15631
- 113.58400
- 8.17205
- −1.15683
- 157.55200
- 6.27875
- −0.48381
- 196.94000
- 3.86419
- 0.00178
- 113.58400
- 9.83561
- −1.54581
- 157.55200
- 7.65191
- −0.72261
- 196.94000
- 5.04229
- −0.16394
- 113.58400
- 11.41880
- −1.94067
- 157.55200
- 8.95985
- −0.96997
- 196.94000
- 6.16499
- −0.33900
- 113.58400
- 12.89910
- −2.33422
- 157.55200
- 10.18400
- −1.22109
- 196.94000
- 7.21634
- −0.51974
- 113.58400
- 14.25660
- −2.72046
- 157.55200
- 11.30780
- −1.47201
- 196.94000
- 8.18205
- −0.70312
- 113.58400
- 15.47220
- −3.09200
- 157.55200
- 12.31520
- −1.71762
- 196.94000
- 9.04844
- −0.88512
- 113.58400
- 16.52810
- −3.44111
- 157.55200
- 13.19160
- −1.95244
- 196.94000
- 9.80273
- −1.06147
- 113.58400
- 17.40920
- −3.76033
- 157.55200
- 13.92420
- −2.17112
- 196.94000
- 10.43390
- −1.22801
- 113.58400
- 18.09600
- −4.03990
- 157.55200
- 14.49670
- −2.36662
- 196.94000
- 10.92790
- −1.37913
- 113.58400
- 18.57650
- −4.25748
- 157.55200
- 14.89820
- −2.52130
- 196.94000
- 11.27490
- −1.49999
- 113.58400
- 18.85600
- −4.39288
- 157.55200
- 15.13230
- −2.61847
- 196.94000
- 11.47740
- −1.57628
- 113.58400
- 18.94730
- −4.43768
- 157.55200
- 15.20870
- −2.65068
- 196.94000
- 11.54360
- −1.60156
- wherein a direction x is a spanwise direction of a rotor, a direction y is a chord length direction of the rotor, a direction z is a thickness direction of the rotor, and k=a/229, wherein a is a radius value of the rotor, and a maximum error of each of the upper aerofoil characteristic line and the lower aerofoil characteristic line equals to ±3%.