US 2017/0001710 A1Published application

Airfoils for rotor blades of rotary wing aircrafts

AssigneeAirbus Helicopters Deutschland GmbH

InventorsAlexander KLEIN, Jonas ILLG, Thorsten LUTZ, Claas-Hinrik ROHARDT, Kai RICHTER

Life of this patent

Estimating the term…

Abstract

An airfoil for a rotor blade of a rotary wing aircraft, the airfoil having a predetermined maximum thickness to chord ratio and comprising, between a leading edge and a trailing edge, an extrados and an intrados, the intrados being defined by predetermined intrados coordinate value pairs and the extrados being defined by predetermined extrados coordinate value pairs, wherein a maximum error of each one of the predetermined intrados coordinate value pairs and the predetermined extrados coordinate value pairs amounts to ±3%.

Claims16

Dependent claims

An airfoil for a rotor blade of a rotary wing aircraft, the airfoil having a maximum thickness to chord ratio of 12% and comprising, between a leading edge and a trailing edge, an extrados and an intrados, the intrados being defined by predetermined intrados coordinate value pairs x/c, yint/c and the extrados being defined by predetermined extrados coordinate value pairs x/c, yext/c, wherein x is a distance from the leading edge to the trailing edge along a chord line of the airfoil, c is a length of the airfoil in chord direction, yint is a distance between the chord line and a respective intrados surface and yext is a distance between the chord line and a respective extrados surface, wherein the predetermined intrados coordinate value pairs x/c, yint/c and the predetermined extrados coordinate value pairs x/c, yext/c are as follows:

x/c
yint/c
x/c
yext/c
0.000000
0.000000
0.000000
0.000000
0.000077
−0.001398
0.000077
0.001446
0.000307
−0.002749
0.000306
0.002940
0.000690
−0.004055
0.000689
0.004483
0.001226
−0.005315
0.001226
0.006071
0.001915
−0.006532
0.001914
0.007707
0.002756
−0.007707
0.002756
0.009385
0.003750
−0.008838
0.003750
0.011105
0.004897
−0.009926
0.004896
0.012865
0.006195
−0.010971
0.006194
0.014662
0.007644
−0.011971
0.007644
0.016492
0.009245
−0.012928
0.009244
0.018354
0.010996
−0.013840
0.010995
0.020243
0.012897
−0.014710
0.012896
0.022155
0.014947
−0.015537
0.014947
0.024087
0.017146
−0.016325
0.017146
0.026035
0.019494
−0.017076
0.019494
0.027995
0.021989
−0.017793
0.021989
0.029962
0.024631
−0.018478
0.024630
0.031932
0.027418
−0.019136
0.027418
0.033902
0.030351
−0.019769
0.030351
0.035867
0.033429
−0.020380
0.033428
0.037823
0.036649
−0.020971
0.036649
0.039766
0.040012
−0.021544
0.040012
0.041694
0.043517
−0.022102
0.043517
0.043603
0.047162
−0.022644
0.047162
0.045489
0.050946
−0.023172
0.050946
0.047350
0.054869
−0.023685
0.054868
0.049183
0.058929
−0.024185
0.058928
0.050985
0.063124
−0.024671
0.063124
0.052754
0.067454
−0.025143
0.067454
0.054487
0.071918
−0.025602
0.071917
0.056181
0.076514
−0.026048
0.076513
0.057837
0.081240
−0.026482
0.081239
0.059451
0.086096
−0.026902
0.086095
0.061022
0.091079
−0.027311
0.091078
0.062551
0.096189
−0.027708
0.096188
0.064035
0.101424
−0.028093
0.101423
0.065474
0.106782
−0.028467
0.106781
0.066868
0.112262
−0.028830
0.112261
0.068216
0.117862
−0.029182
0.117862
0.069519
0.123581
−0.029524
0.123580
0.070777
0.129416
−0.029853
0.129416
0.071989
0.135367
−0.030173
0.135366
0.073156
0.141431
−0.030481
0.141430
0.074278
0.147607
−0.030778
0.147606
0.075355
0.153892
−0.031064
0.153891
0.076387
0.160285
−0.031338
0.160284
0.077373
0.166784
−0.031601
0.166783
0.078315
0.173388
−0.031852
0.173387
0.079210
0.180093
−0.032092
0.180092
0.080058
0.186899
−0.032319
0.186898
0.080856
0.193802
−0.032535
0.193802
0.081606
0.200802
−0.032739
0.200801
0.082302
0.207896
−0.032930
0.207895
0.082944
0.215082
−0.033110
0.215081
0.083529
0.222358
−0.033276
0.222357
0.084054
0.229722
−0.033431
0.229721
0.084516
0.237171
−0.033574
0.237170
0.084914
0.244703
−0.033703
0.244702
0.085243
0.252317
−0.033819
0.252316
0.085502
0.260010
−0.033924
0.260009
0.085689
0.267779
−0.034017
0.267778
0.085805
0.275622
−0.034096
0.275621
0.085848
0.283538
−0.034166
0.283537
0.085821
0.291523
−0.034222
0.291522
0.085722
0.299575
−0.034269
0.299574
0.085557
0.307693
−0.034304
0.307692
0.085328
0.315873
−0.034330
0.315872
0.085037
0.324113
−0.034346
0.324112
0.084689
0.332411
−0.034353
0.332410
0.084288
0.340764
−0.034350
0.340763
0.083837
0.349170
−0.034340
0.349169
0.083342
0.357627
−0.034321
0.357626
0.082805
0.366131
−0.034294
0.366130
0.082231
0.374680
−0.034259
0.374679
0.081625
0.383273
−0.034214
0.383272
0.080987
0.391905
−0.034163
0.391905
0.080323
0.400576
−0.034103
0.400575
0.079635
0.409282
−0.034035
0.409281
0.078926
0.418020
−0.033958
0.418019
0.078196
0.426788
−0.033873
0.426787
0.077447
0.435584
−0.033779
0.435583
0.076679
0.444405
−0.033678
0.444404
0.075896
0.453248
−0.033567
0.453247
0.075093
0.462110
−0.033448
0.462109
0.074273
0.470990
−0.033322
0.470989
0.073436
0.479884
−0.033187
0.479883
0.072580
0.488790
−0.033045
0.488789
0.071707
0.497705
−0.032894
0.497705
0.070816
0.506627
−0.032735
0.506626
0.069907
0.515553
−0.032568
0.515552
0.068981
0.524480
−0.032393
0.524479
0.068037
0.533405
−0.032210
0.533405
0.067076
0.542327
−0.032017
0.542326
0.066097
0.551242
−0.031818
0.551242
0.065104
0.560148
−0.031609
0.560147
0.064093
0.569042
−0.031394
0.569042
0.063069
0.577922
−0.031169
0.577921
0.062029
0.586785
−0.030936
0.586784
0.060976
0.595627
−0.030694
0.595627
0.059910
0.604448
−0.030445
0.604447
0.058833
0.613244
−0.030187
0.613243
0.057745
0.622012
−0.029919
0.622011
0.056647
0.630750
−0.029641
0.630750
0.055540
0.639456
−0.029355
0.639455
0.054426
0.648126
−0.029059
0.648125
0.053303
0.656759
−0.028751
0.656758
0.052171
0.665351
−0.028433
0.665350
0.051030
0.673900
−0.028103
0.673900
0.049879
0.682404
−0.027759
0.682404
0.048717
0.690861
−0.027402
0.690860
0.047544
0.699266
−0.027028
0.699266
0.046357
0.707619
−0.026640
0.707619
0.045158
0.715917
−0.026232
0.715917
0.043942
0.724157
−0.025804
0.724157
0.042711
0.732337
−0.025356
0.732336
0.041464
0.740454
−0.024883
0.740454
0.040199
0.748506
−0.024388
0.748506
0.038920
0.756491
−0.023867
0.756491
0.037626
0.764407
−0.023322
0.764406
0.036317
0.772250
−0.022751
0.772249
0.034996
0.780019
−0.022156
0.780018
0.033664
0.787711
−0.021536
0.787710
0.032324
0.795324
−0.020893
0.795324
0.030978
0.802856
−0.020227
0.802856
0.029628
0.810305
−0.019541
0.810305
0.028278
0.817668
−0.018834
0.817668
0.026929
0.824944
−0.018109
0.824944
0.025584
0.832130
−0.017366
0.832129
0.024246
0.839223
−0.016608
0.839223
0.022916
0.846223
−0.015835
0.846223
0.021597
0.853126
−0.015050
0.853126
0.020291
0.859932
−0.014255
0.859931
0.019000
0.866637
−0.013451
0.866636
0.017726
0.873240
−0.012643
0.873239
0.016472
0.879738
−0.011831
0.879738
0.015238
0.886131
−0.011019
0.886131
0.014030
0.892416
−0.010213
0.892416
0.012851
0.898591
−0.009416
0.898591
0.011704
0.904655
−0.008633
0.904655
0.010596
0.910605
−0.007871
0.910605
0.009532
0.916440
−0.007134
0.916440
0.008516
0.922158
−0.006430
0.922158
0.007556
0.927758
−0.005764
0.927758
0.006655
0.933238
−0.005141
0.933237
0.005821
0.938595
−0.004564
0.938595
0.005056
0.943830
−0.004039
0.943830
0.004363
0.948939
−0.003564
0.948939
0.003743
0.953922
−0.003142
0.953922
0.003197
0.956325
−0.002953
0.958777
0.002723
0.959739
−0.002725
0.963503
0.002318
0.963158
−0.002563
0.968098
0.001979
0.966579
−0.002457
0.970001
0.001854
0.970001
−0.002402
0.976001
0.001909
0.976001
−0.002347
0.982001
0.001964
0.982001
−0.002293
0.988001
0.002019
0.988001
−0.002238
0.994000
0.002073
0.994000
−0.002183
1.000000
0.002128
1.000000
−0.002128
wherein a maximum error of each one of the predetermined intrados coordinate value pairs x/c, yint/c and the predetermined extrados coordinate value pairs x/c, yext/c amounts to ±3%.

640 more elements

An airfoil for a rotor blade of a rotary wing aircraft, the airfoil having a maximum thickness to chord ratio of 9% and comprising, between a leading edge and a trailing edge, an extrados and an intrados, the intrados being defined by predetermined intrados coordinate value pairs x/c, yint/c and the extrados being defined by predetermined extrados coordinate value pairs x/c, yext/c, wherein x is a distance from the leading edge to the trailing edge along a chord line of the airfoil, c is a length of the airfoil in chord direction, yint is a distance between the chord line and a respective intrados surface and yext is a distance between the chord line and a respective extrados surface, wherein the predetermined intrados coordinate value pairs x/c, yint/c and the predetermined extrados coordinate value pairs x/c, yext/c are as follows:

x/c
yint/c
x/c
yext/c
0.000000
0.000079
0.000000
0.000079
0.000100
−0.000821
0.000100
0.001156
0.000400
−0.001602
0.000400
0.002431
0.000901
−0.002314
0.000901
0.003855
0.001601
−0.002993
0.001601
0.005382
0.002500
−0.003661
0.002500
0.006983
0.003599
−0.004331
0.003599
0.008637
0.004896
−0.005009
0.004896
0.010336
0.006392
−0.005694
0.006392
0.012070
0.008086
−0.006381
0.008086
0.013836
0.009977
−0.007067
0.009977
0.015625
0.012063
−0.007745
0.012063
0.017432
0.014346
−0.008412
0.014346
0.019249
0.016823
−0.009067
0.016823
0.021067
0.019494
−0.009707
0.019494
0.022879
0.022357
−0.010332
0.022357
0.024678
0.025412
−0.010940
0.025412
0.026457
0.028658
−0.011532
0.028658
0.028211
0.032092
−0.012105
0.032092
0.029937
0.035714
−0.012660
0.035714
0.031632
0.039523
−0.013196
0.039523
0.033296
0.043517
−0.013713
0.043517
0.034926
0.047694
−0.014211
0.047694
0.036523
0.052053
−0.014692
0.052053
0.038087
0.056592
−0.015154
0.056592
0.039615
0.061309
−0.015598
0.061309
0.041106
0.066203
−0.016025
0.066203
0.042558
0.071272
−0.016435
0.071272
0.043968
0.076513
−0.016831
0.076513
0.045335
0.081926
−0.017212
0.081926
0.046656
0.087506
−0.017580
0.087506
0.047929
0.093254
−0.017935
0.093254
0.049154
0.099165
−0.018280
0.099165
0.050329
0.105239
−0.018615
0.105239
0.051455
0.111472
−0.018941
0.111472
0.052533
0.117862
−0.019258
0.117862
0.053563
0.124407
−0.019567
0.124407
0.054546
0.131105
−0.019868
0.131105
0.055482
0.137952
−0.020161
0.137952
0.056373
0.144946
−0.020446
0.144946
0.057218
0.152085
−0.020723
0.152085
0.058018
0.159365
−0.020991
0.159365
0.058772
0.166784
−0.021250
0.166784
0.059482
0.174339
−0.021500
0.174339
0.060148
0.182027
−0.021740
0.182027
0.060769
0.189845
−0.021971
0.189845
0.061348
0.197791
−0.022193
0.197791
0.061885
0.205860
−0.022405
0.205860
0.062380
0.214050
−0.022609
0.214050
0.062833
0.222358
−0.022805
0.222358
0.063246
0.230781
−0.022992
0.230781
0.063619
0.239314
−0.023172
0.239314
0.063953
0.247956
−0.023345
0.247956
0.064250
0.256703
−0.023511
0.256703
0.064510
0.265551
−0.023668
0.265551
0.064736
0.274497
−0.023818
0.274497
0.064928
0.283537
−0.023961
0.283537
0.065087
0.292669
−0.024095
0.292669
0.065213
0.301888
−0.024222
0.301888
0.065306
0.311191
−0.024341
0.311191
0.065366
0.320574
−0.024453
0.320574
0.065392
0.330034
−0.024557
0.330034
0.065382
0.339567
−0.024654
0.339567
0.065337
0.349170
−0.024742
0.349170
0.065255
0.358838
−0.024822
0.358838
0.065136
0.368569
−0.024893
0.368569
0.064980
0.378357
−0.024954
0.378357
0.064786
0.388201
−0.025006
0.388201
0.064554
0.398095
−0.025047
0.398095
0.064285
0.408036
−0.025078
0.408036
0.063977
0.418020
−0.025097
0.418020
0.063630
0.428043
−0.025106
0.428043
0.063246
0.438102
−0.025104
0.438102
0.062822
0.448192
−0.025090
0.448192
0.062359
0.458310
−0.025065
0.458310
0.061857
0.468451
−0.025027
0.468451
0.061314
0.478613
−0.024977
0.478613
0.060730
0.488790
−0.024914
0.488790
0.060105
0.498979
−0.024838
0.498979
0.059437
0.509177
−0.024750
0.509177
0.058725
0.519378
−0.024648
0.519378
0.057968
0.529580
−0.024534
0.529580
0.057165
0.539778
−0.024406
0.539778
0.056314
0.549969
−0.024265
0.549969
0.055414
0.560148
−0.024110
0.560148
0.054465
0.570312
−0.023943
0.570312
0.053466
0.580456
−0.023762
0.580456
0.052418
0.590577
−0.023568
0.590577
0.051323
0.600670
−0.023360
0.600670
0.050182
0.610733
−0.023138
0.610733
0.048997
0.620761
−0.022902
0.620761
0.047772
0.630750
−0.022650
0.630750
0.046508
0.640696
−0.022383
0.640696
0.045209
0.650596
−0.022100
0.650596
0.043880
0.660446
−0.021799
0.660446
0.042523
0.670241
−0.021482
0.670241
0.041142
0.679979
−0.021146
0.679979
0.039742
0.689655
−0.020793
0.689655
0.038325
0.699266
−0.020421
0.699266
0.036897
0.708808
−0.020030
0.708808
0.035460
0.718277
−0.019619
0.718277
0.034019
0.727670
−0.019188
0.727670
0.032577
0.736983
−0.018734
0.736983
0.031138
0.746212
−0.018256
0.746212
0.029705
0.755355
−0.017751
0.755355
0.028280
0.764406
−0.017218
0.764406
0.026864
0.773364
−0.016653
0.773364
0.025461
0.782224
−0.016056
0.782224
0.024070
0.790983
−0.015426
0.790983
0.022693
0.799638
−0.014765
0.799638
0.021332
0.808185
−0.014075
0.808185
0.019986
0.816622
−0.013359
0.816622
0.018658
0.824944
−0.012623
0.824944
0.017349
0.833149
−0.011872
0.833149
0.016061
0.841233
−0.011110
0.841233
0.014799
0.849193
−0.010343
0.849193
0.013565
0.857027
−0.009576
0.857027
0.012365
0.864731
−0.008815
0.864731
0.011204
0.872303
−0.008066
0.872303
0.010088
0.879738
−0.007335
0.879738
0.009023
0.887036
−0.006632
0.887036
0.008016
0.894192
−0.005964
0.894192
0.007072
0.901204
−0.005340
0.901204
0.006198
0.908069
−0.004767
0.908069
0.005400
0.914785
−0.004253
0.914785
0.004684
0.921349
−0.003800
0.921349
0.004056
0.927758
−0.003413
0.927758
0.003520
0.934010
−0.003091
0.934010
0.003077
0.940103
−0.002832
0.940103
0.002727
0.946035
−0.002633
0.946035
0.002463
0.951802
−0.002490
0.951802
0.002276
0.957403
−0.002395
0.957403
0.002153
0.962836
−0.002339
0.962836
0.002083
0.968098
−0.002311
0.968098
0.002049
0.973188
−0.002302
0.973188
0.002039
0.978104
−0.002303
0.978104
0.002042
0.982843
−0.002309
0.982843
0.002052
0.987404
−0.002316
0.987404
0.002064
0.991785
−0.002323
0.991785
0.002074
0.995984
−0.002328
0.995984
0.002084
1.000000
−0.002332
1.000000
0.002092
wherein a maximum error of each one of the predetermined intrados coordinate value pairs x/c, yint/c and the predetermined extrados coordinate value pairs x/c, yext/c amounts to ±3%.

566 more elements

An airfoil for a rotor blade of a rotary wing aircraft, the airfoil having a maximum thickness to chord ratio of 8% and comprising, between a leading edge and a trailing edge, an extrados and an intrados, the intrados being defined by predetermined intrados coordinate value pairs x/c, yint/c and the extrados being defined by predetermined extrados coordinate value pairs x/c, yext/c, wherein x is a distance from the leading edge to the trailing edge along a chord line of the airfoil, c is a length of the airfoil in chord direction, yint is a distance between the chord line and a respective intrados surface and yext is a distance between the chord line and a respective extrados surface, characterized in that the predetermined intrados coordinate value pairs x/c, yint/c and the predetermined extrados coordinate value pairs x/c, yext/c are as follows:

x/c
yint/c
x/c
yext/c
0.000000
0.000215
0.000000
0.000215
0.000108
−0.000757
0.000078
0.001200
0.000411
−0.001747
0.000327
0.002240
0.000926
−0.002750
0.000739
0.003360
0.001662
−0.003727
0.001310
0.004558
0.002616
−0.004655
0.002049
0.005839
0.003800
−0.005525
0.002973
0.007227
0.005244
−0.006340
0.004129
0.008754
0.006978
−0.007128
0.005577
0.010448
0.009067
−0.007908
0.007390
0.012337
0.011619
−0.008697
0.009666
0.014451
0.014783
−0.009530
0.012523
0.016812
0.018750
−0.010418
0.016062
0.019413
0.023722
−0.011352
0.020339
0.022198
0.029809
−0.012304
0.025333
0.025063
0.036922
−0.013230
0.030955
0.027888
0.044810
−0.014099
0.037107
0.030586
0.053218
−0.014906
0.043702
0.033107
0.061943
−0.015652
0.050680
0.035432
0.070873
−0.016345
0.058002
0.037567
0.079906
−0.016990
0.065631
0.039529
0.088988
−0.017593
0.073520
0.041336
0.098046
−0.018154
0.081608
0.043000
0.107068
−0.018678
0.089839
0.044528
0.116047
−0.019169
0.098172
0.045923
0.124990
−0.019632
0.106577
0.047188
0.133918
−0.020068
0.115037
0.048325
0.142864
−0.020484
0.123550
0.049337
0.151836
−0.020880
0.132127
0.050232
0.160857
−0.021259
0.140777
0.051020
0.169928
−0.021623
0.149509
0.051716
0.179052
−0.021972
0.158319
0.052338
0.188212
−0.022307
0.167169
0.052894
0.197390
−0.022628
0.176050
0.053383
0.206574
−0.022937
0.184960
0.053815
0.215752
−0.023233
0.193877
0.054190
0.224921
−0.023518
0.202805
0.054506
0.234080
−0.023790
0.211741
0.054767
0.243213
−0.024051
0.220690
0.054973
0.252331
−0.024302
0.229653
0.055126
0.261430
−0.024541
0.238634
0.055229
0.270527
−0.024771
0.247642
0.055289
0.279620
−0.024990
0.256664
0.055307
0.288732
−0.025198
0.265716
0.055288
0.297858
−0.025397
0.274800
0.055241
0.307010
−0.025588
0.283904
0.055169
0.316188
−0.025771
0.293030
0.055078
0.325380
−0.025946
0.302179
0.054971
0.334565
−0.026112
0.311343
0.054856
0.343733
−0.026272
0.320511
0.054731
0.352895
−0.026423
0.329689
0.054599
0.362062
−0.026567
0.338869
0.054462
0.371226
−0.026705
0.348043
0.054319
0.380408
−0.026835
0.357211
0.054168
0.389592
−0.026960
0.366378
0.054008
0.398773
−0.027082
0.375537
0.053840
0.407948
−0.027194
0.384693
0.053659
0.417114
−0.027296
0.393848
0.053468
0.426264
−0.027388
0.403006
0.053265
0.435411
−0.027472
0.412163
0.053052
0.444557
−0.027545
0.421324
0.052828
0.453708
−0.027610
0.430488
0.052595
0.462868
−0.027663
0.439656
0.052354
0.472038
−0.027705
0.448824
0.052104
0.481218
−0.027736
0.457990
0.051848
0.490405
−0.027757
0.467151
0.051581
0.499600
−0.027765
0.476316
0.051306
0.508797
−0.027761
0.485468
0.051024
0.517989
−0.027743
0.494612
0.050728
0.527173
−0.027713
0.503750
0.050418
0.536346
−0.027668
0.512886
0.050095
0.545491
−0.027609
0.522011
0.049757
0.554621
−0.027536
0.531136
0.049400
0.563731
−0.027444
0.540266
0.049029
0.572814
−0.027339
0.549383
0.048643
0.581885
−0.027215
0.558500
0.048237
0.590939
−0.027072
0.567617
0.047814
0.599982
−0.026910
0.576733
0.047374
0.609025
−0.026731
0.585841
0.046918
0.618071
−0.026516
0.594933
0.046442
0.627122
−0.026269
0.604018
0.045944
0.636179
−0.025988
0.613076
0.045422
0.645255
−0.025677
0.622116
0.044865
0.654342
−0.025340
0.631136
0.044278
0.663446
−0.024980
0.640125
0.043651
0.672559
−0.024601
0.649101
0.042983
0.681681
−0.024204
0.658056
0.042268
0.690809
−0.023791
0.667004
0.041505
0.699940
−0.023364
0.675947
0.040692
0.709072
−0.022922
0.684895
0.039831
0.718204
−0.022468
0.693854
0.038922
0.727323
−0.022000
0.702833
0.037972
0.736438
−0.021514
0.711841
0.036986
0.745545
−0.021011
0.720869
0.035967
0.754646
−0.020488
0.729930
0.034916
0.763749
−0.019946
0.739005
0.033838
0.772838
−0.019385
0.748093
0.032735
0.781925
−0.018800
0.757187
0.031610
0.791017
−0.018195
0.766273
0.030463
0.800106
−0.017569
0.775334
0.029305
0.809195
−0.016921
0.784371
0.028132
0.818292
−0.016252
0.793385
0.026950
0.827400
−0.015566
0.802375
0.025754
0.836515
−0.014864
0.811351
0.024551
0.845633
−0.014148
0.820321
0.023336
0.854759
−0.013419
0.829305
0.022108
0.863883
−0.012681
0.838309
0.020864
0.872989
−0.011934
0.847334
0.019607
0.882064
−0.011172
0.856389
0.018334
0.891090
−0.010393
0.865463
0.017051
0.900055
−0.009580
0.874538
0.015760
0.908968
−0.008727
0.883610
0.014463
0.917793
−0.007820
0.892663
0.013166
0.926569
−0.006869
0.901705
0.011868
0.935039
−0.005887
0.910726
0.010564
0.943157
−0.004809
0.919634
0.009266
0.950722
−0.003725
0.928288
0.007973
0.958140
−0.003014
0.936612
0.006671
0.965683
−0.002577
0.944461
0.005343
0.973486
−0.002486
0.952013
0.004032
0.981658
−0.002497
0.959220
0.003090
0.989505
−0.002498
0.966334
0.002578
0.996281
−0.002499
0.973827
0.002484
1.000000
−0.002500
0.981787
0.002497
0.989536
0.002498
0.996283
0.002499
1.000000
0.002500
wherein a maximum error of each one of the predetermined intrados coordinate value pairs x/c, yint/c and the predetermined extrados coordinate value pairs x/c, yext/c amounts to ±3%.

504 more elements

Dependencies are inferred from the claim text.

patentgrep

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Abstract

x/c
yint/c
x/c
yext/c
0.000000
0.000000
0.000000
0.000000
0.000077
−0.001398
0.000077
0.001446
0.000307
−0.002749
0.000306
0.002940
0.000690
−0.004055
0.000689
0.004483
0.001226
−0.005315
0.001226
0.006071
0.001915
−0.006532
0.001914
0.007707
0.002756
−0.007707
0.002756
0.009385
0.003750
−0.008838
0.003750
0.011105
0.004897
−0.009926
0.004896
0.012865
0.006195
−0.010971
0.006194
0.014662
0.007644
−0.011971
0.007644
0.016492
0.009245
−0.012928
0.009244
0.018354
0.010996
−0.013840
0.010995
0.020243
0.012897
−0.014710
0.012896
0.022155
0.014947
−0.015537
0.014947
0.024087
0.017146
−0.016325
0.017146
0.026035
0.019494
−0.017076
0.019494
0.027995
0.021989
−0.017793
0.021989
0.029962
0.024631
−0.018478
0.024630
0.031932
0.027418
−0.019136
0.027418
0.033902
0.030351
−0.019769
0.030351
0.035867
0.033429
−0.020380
0.033428
0.037823
0.036649
−0.020971
0.036649
0.039766
0.040012
−0.021544
0.040012
0.041694
0.043517
−0.022102
0.043517
0.043603
0.047162
−0.022644
0.047162
0.045489
0.050946
−0.023172
0.050946
0.047350
0.054869
−0.023685
0.054868
0.049183
0.058929
−0.024185
0.058928
0.050985
0.063124
−0.024671
0.063124
0.052754
0.067454
−0.025143
0.067454
0.054487
0.071918
−0.025602
0.071917
0.056181
0.076514
−0.026048
0.076513
0.057837
0.081240
−0.026482
0.081239
0.059451
0.086096
−0.026902
0.086095
0.061022
0.091079
−0.027311
0.091078
0.062551
0.096189
−0.027708
0.096188
0.064035
0.101424
−0.028093
0.101423
0.065474
0.106782
−0.028467
0.106781
0.066868
0.112262
−0.028830
0.112261
0.068216
0.117862
−0.029182
0.117862
0.069519
0.123581
−0.029524
0.123580
0.070777
0.129416
−0.029853
0.129416
0.071989
0.135367
−0.030173
0.135366
0.073156
0.141431
−0.030481
0.141430
0.074278
0.147607
−0.030778
0.147606
0.075355
0.153892
−0.031064
0.153891
0.076387
0.160285
−0.031338
0.160284
0.077373
0.166784
−0.031601
0.166783
0.078315
0.173388
−0.031852
0.173387
0.079210
0.180093
−0.032092
0.180092
0.080058
0.186899
−0.032319
0.186898
0.080856
0.193802
−0.032535
0.193802
0.081606
0.200802
−0.032739
0.200801
0.082302
0.207896
−0.032930
0.207895
0.082944
0.215082
−0.033110
0.215081
0.083529
0.222358
−0.033276
0.222357
0.084054
0.229722
−0.033431
0.229721
0.084516
0.237171
−0.033574
0.237170
0.084914
0.244703
−0.033703
0.244702
0.085243
0.252317
−0.033819
0.252316
0.085502
0.260010
−0.033924
0.260009
0.085689
0.267779
−0.034017
0.267778
0.085805
0.275622
−0.034096
0.275621
0.085848
0.283538
−0.034166
0.283537
0.085821
0.291523
−0.034222
0.291522
0.085722
0.299575
−0.034269
0.299574
0.085557
0.307693
−0.034304
0.307692
0.085328
0.315873
−0.034330
0.315872
0.085037
0.324113
−0.034346
0.324112
0.084689
0.332411
−0.034353
0.332410
0.084288
0.340764
−0.034350
0.340763
0.083837
0.349170
−0.034340
0.349169
0.083342
0.357627
−0.034321
0.357626
0.082805
0.366131
−0.034294
0.366130
0.082231
0.374680
−0.034259
0.374679
0.081625
0.383273
−0.034214
0.383272
0.080987
0.391905
−0.034163
0.391905
0.080323
0.400576
−0.034103
0.400575
0.079635
0.409282
−0.034035
0.409281
0.078926
0.418020
−0.033958
0.418019
0.078196
0.426788
−0.033873
0.426787
0.077447
0.435584
−0.033779
0.435583
0.076679
0.444405
−0.033678
0.444404
0.075896
0.453248
−0.033567
0.453247
0.075093
0.462110
−0.033448
0.462109
0.074273
0.470990
−0.033322
0.470989
0.073436
0.479884
−0.033187
0.479883
0.072580
0.488790
−0.033045
0.488789
0.071707
0.497705
−0.032894
0.497705
0.070816
0.506627
−0.032735
0.506626
0.069907
0.515553
−0.032568
0.515552
0.068981
0.524480
−0.032393
0.524479
0.068037
0.533405
−0.032210
0.533405
0.067076
0.542327
−0.032017
0.542326
0.066097
0.551242
−0.031818
0.551242
0.065104
0.560148
−0.031609
0.560147
0.064093
0.569042
−0.031394
0.569042
0.063069
0.577922
−0.031169
0.577921
0.062029
0.586785
−0.030936
0.586784
0.060976
0.595627
−0.030694
0.595627
0.059910
0.604448
−0.030445
0.604447
0.058833
0.613244
−0.030187
0.613243
0.057745
0.622012
−0.029919
0.622011
0.056647
0.630750
−0.029641
0.630750
0.055540
0.639456
−0.029355
0.639455
0.054426
0.648126
−0.029059
0.648125
0.053303
0.656759
−0.028751
0.656758
0.052171
0.665351
−0.028433
0.665350
0.051030
0.673900
−0.028103
0.673900
0.049879
0.682404
−0.027759
0.682404
0.048717
0.690861
−0.027402
0.690860
0.047544
0.699266
−0.027028
0.699266
0.046357
0.707619
−0.026640
0.707619
0.045158
0.715917
−0.026232
0.715917
0.043942
0.724157
−0.025804
0.724157
0.042711
0.732337
−0.025356
0.732336
0.041464
0.740454
−0.024883
0.740454
0.040199
0.748506
−0.024388
0.748506
0.038920
0.756491
−0.023867
0.756491
0.037626
0.764407
−0.023322
0.764406
0.036317
0.772250
−0.022751
0.772249
0.034996
0.780019
−0.022156
0.780018
0.033664
0.787711
−0.021536
0.787710
0.032324
0.795324
−0.020893
0.795324
0.030978
0.802856
−0.020227
0.802856
0.029628
0.810305
−0.019541
0.810305
0.028278
0.817668
−0.018834
0.817668
0.026929
0.824944
−0.018109
0.824944
0.025584
0.832130
−0.017366
0.832129
0.024246
0.839223
−0.016608
0.839223
0.022916
0.846223
−0.015835
0.846223
0.021597
0.853126
−0.015050
0.853126
0.020291
0.859932
−0.014255
0.859931
0.019000
0.866637
−0.013451
0.866636
0.017726
0.873240
−0.012643
0.873239
0.016472
0.879738
−0.011831
0.879738
0.015238
0.886131
−0.011019
0.886131
0.014030
0.892416
−0.010213
0.892416
0.012851
0.898591
−0.009416
0.898591
0.011704
0.904655
−0.008633
0.904655
0.010596
0.910605
−0.007871
0.910605
0.009532
0.916440
−0.007134
0.916440
0.008516
0.922158
−0.006430
0.922158
0.007556
0.927758
−0.005764
0.927758
0.006655
0.933238
−0.005141
0.933237
0.005821
0.938595
−0.004564
0.938595
0.005056
0.943830
−0.004039
0.943830
0.004363
0.948939
−0.003564
0.948939
0.003743
0.953922
−0.003142
0.953922
0.003197
0.956325
−0.002953
0.958777
0.002723
0.959739
−0.002725
0.963503
0.002318
0.963158
−0.002563
0.968098
0.001979
0.966579
−0.002457
0.970001
0.001854
0.970001
−0.002402
0.976001
0.001909
0.976001
−0.002347
0.982001
0.001964
0.982001
−0.002293
0.988001
0.002019
0.988001
−0.002238
0.994000
0.002073
0.994000
−0.002183
1.000000
0.002128
1.000000
−0.002128
wherein a maximum error of each one of the predetermined intrados coordinate value pairs x/c, yint/c and the predetermined extrados coordinate value pairs x/c, yext/c amounts to ±3%.

640 more elements