SAILPLANE CRUISING POLAR COEFFICIENTS AND WEIGHT LIMITS 
by Carl Herold

Notes

1. Following the Sailplane name, within the parenthesis the assumed span and a two place glider is with a single pilot (Pil) or with Passenger (Pas)

2. IE users: To save a polar file directly to your PC, right-click on the 'click' link in the 'WinPilot Polar File" column, and select 'Save Target As...' .

3. Data to be entered to WinPilot's polar file (extension .PLR) is highlighted in  GREEN .The polar file should be put into the \My Documents directory on Windows CE device, and it can be selected in WinPilot by going to the Menu.Files page.

4. If your glider is not on this list pick a glider which performs close to yours: e.g., with the same design era, span, Standard, 15 meter, or Open, etc.  

Single-Place Gliders:

 

 Sailplane

 
 

Span

meters

WinPilot

Polar File

 

Glide

Ratio
Comp.

Glide

Ratio
 

MT WT

kg
Dry

AUW

kg

Max

Ballast

liters

Max

Gross Wt

kg
3 points from Flight Test Data Point Cruising Polar
V1 W1 V2 W2 V3 W3
km/h m/Sec km/h m/sec km/h m/sec
1-26A 12.2 click 23 22.1 161 261 0 261 74.86 -0.940 107.08 -1.712 142.68 -3.425
1-26E 12.2 click 23 22.1 206 315 0 318 82.30 -1.036 117.73 -1.882 156.86 -3.765
1-34 15.0 click 31 31.1 240 354 0 381 89.82 -0.803 143.71 -2.104 179.64 -3.837
1-35A 15.0 click 38 37.2 268 381 179 422 98.68 -0.740 151.82 -1.796 202.87 -3.894
1-36 Sprite 14.0 click 32.5 31.9 209 322 0 340 75.98 -0.677 132.96 -1.995 170.95 -4.064
604 22 click 49 48.5 457 570 100 650 112.97 0.723 150.64 -1.416 207.13 -4.106
ASW-12 18.3 click 47 46.3 339 948 189 430 95.00 -0.570 148.00 -1.480 183.09 -2.637
ASW-15 15.0 click 35.1 35.5 236 349 91 350 97.56 -0.765 156.12 -1.900 195.15 -3.394
ASW-17 20.0 click 48 47.3 408 522 151 570 114.50 -0.695 169.05 -1.680 206.50 -2.890
ASW-19 15.0 click 38 38.1 250 363 125 454 97.47 -0.738 155.96 -1.642 194.96 -3.101
ASW-20 15.0 click 41.7 42.4 263 377 159 525 116.20 -0.770 174.30 -1.886 213.04 -3.283
ASW-24 15.0 click 43.7 43.2 234 350 159 500 108.82 -0.728 142.25 -1.213 167.41 -1.766
ASW-27 Wnglts 15.0 click 48 47.6 244 357 165 500 108.80 -0.635 156.40 -1.182 211.13 -2.540
ASW28 
(by Ed Johnston)
15.0 click                
DG-400-15 15 click 42 42.6 320 440 90 480 115.00 -0.760 160.53 -1.219 210.22 -2.340
DG-400-17 17 click 45 44.8 324 444 90 460 118.28 -0.683 163.77 -1.151 198.35 -1.810
DG-800 15m 15.0 click 45 45.0 322 468 120 525 133.90 -0.879 178.87 -1.528 223.59 -2.527
DG-800 18m Wnglts 18.0 click 50 49.6 345 472 120 525 106.00 -0.620 171.75 -1.466 214.83 -2.346
Discus A 15.0 click 43 43.0 236 350 182 525 103.77 -0.720 155.65 -1.546 190.24 -3.121
Genesis II 15.0 click 43 43.4 261 374 151 523 94.00 -0.608 141.05 -1.178 172.40 -1.960
H-201 Std Libelle 15.0 click 34.5 34.5 191 304 50 350 97.00 -0.790 152.43 -1.913 190.54 -3.314
H-301 Libelle 15.0 click 39 38.4 187 300 50 300 94.00 -0.680 147.71 -2.032 184.64 -4.064
IS-29D2 Lark 15 click 37 37.0 247 360 0 360 100.00 -0.815 135.67 -1.552 184.12 -3.280
Jantar 2 (SZD-42A) 20.5 click 48 47.6 369 482 191 649 109.50 -0.660 157.14 -1.465 196.42 -2.662
Ka-6CR 15.0 click 30 29.9 191 310 0 310 87.35 -0.812 141.92 -2.032 174.68 -3.517
L-33 SOLO 14.1 click 31 30.7 194 330 0 340 87.20 -0.797 135.64 -1.727 174.40 -3.402
LS-1C 15 click 35 34.8 237 350 91 408 115.87 -1.017 154.49 -1.838 193.12 -3.321
LS-3 15.0 click 40 40.1 269 383 121 470 115.03 -0.860 174.04 -1.761 212.72 -3.432
LS-4a 15.0 click 40 40.2 247 361 121 472 114.87 -0.799 172.30 -2.326 210.59 -4.448
LS-6a
(by Ed Johnston)
15.0 click                
LS-7WL
(by Ian Mountain)
click                
LS-8
(by Ed Johnston)
15.0 click                
Nimbus 2  (20.3m) 20.3 click 49 49.0 356 493 159 580 119.83 -0.750 179.75 -2.142 219.69 -3.769
Nimbus 3  (24.6m) 24.6 click 57 57.3 410 527 159 750 116.18 -0.665 174.28 -1.806 232.37 -3.821
Nimbus 3T 24.5 click 60 59.4 460 577 310 750 141.70 -0.985 182.35 -1.890 243.13 -4.001
Nimbus 4   (26.4m) 26.4 click 60 59.4 484 597 303 800 85.10 -0.412 127.98 -0.746 162.74 -1.386
PIK-20B 15.0 click 42 41.7 240 354 144 450 102.50 -0.685 157.76 -1.590 216.91 -3.602
PIK-20D 15.0 click 40.8 40.4 227 348 144 450 100.00 -0.691 156.54 -1.782 215.24 -4.192
PIK-20E 15.0 click 42 41.6 324 437 80 450 109.61 -0.830 166.68 -1.996 241.15 -4.696
PIK-30M 17 click 45 44.8 347 460 0 460 123.60 -0.776 152.04 -1.119 200.22 -2.166
PW-5 Smyk 13.4 click 31.2 31.2 188 300 0 300 99.50 -0.951 158.48 -2.853 198.10 -5.135
Russia AC-4  (12.6m) 12.6 click 31 31.2 128 250 0 250 99.30 -0.918 140.01 -1.800 170.01 -2.850
Std Cirrus 15.0 click 35.2 35.7 224 337 80 390 93.23 -0.742 149.17 -1.708 205.10 -4.168
SZD-55-1 15.0 click 43 42.7 216 336 201 500 98.30 -0.665 176.76 -2.267 216.04 -4.310
Ventus A/B  (16.6m) 16.6 click 44 43.9 245 358 151 525 100.17 -0.638 159.69 -1.470 239.54 -4.293
Ventus B  (15m) 15.0 click 40 40.0 227 341 151 525 97.69 -0.680 156.30 -1.458 234.45 -3.848
Zuni II 15.0 click 37.7 37.5 245 358 182 495 110.00 -0.880 167.00 -2.210 203.72 -3.632
                           

 

 

Two-Place Gliders:

 

 Sailplane

 
 

Span

meters

WinPilot

Polar File

 

Glide

Ratio
Comp.

Glide

Ratio
 

MT WT

kg
Dry

AUW

kg

Max

Ballast

liters

Max

Gross Wt

kg
3 points from Flight Test Data Point Cruising Polar
V1 W1 V2 W2 V3 W3
km/h m/Sec km/h m/sec km/h m/sec
ASH-25  (25m,  Pil) 25.0 click 57 56.7 488 602 120 750 98.50 -0.519 152.18 -1.254 196.93 -2.283
ASH-25  (25m,  Pas) 25.0 click 57 56.7 488 693 120 750 105.67 -0.557 163.25 -1.345 211.26 -2.449
ASH-25M Pil 25.6 click 57 57 636 660 121 682 121.3 -0.729 159.35 -1.313 206.22 -2.391
ASH-25M Pil+Pas 25.6 click 57 56.9 636 750 121 772 130.01 -0.780 169.96 -1.400 219.94 -2.550
DG-500 Pil 22.0 click 47 47 456 570 160 750 107.50 -0.664 141.33 -1.191 176.66 -2.131
DG-500 Pil+Pas 22.0 click 47 46.7 456 660 160 750 115.50 -0.715 152.16 -1.282 190.22 -2.295
DG-500M Pil 22.0 click 47 47.1 545 659 100 825 115.40 -0.711 152.01 -1.281 190.02 -2.293
DG-500M Pil+Pas 22.0 click 47 46.9 546 750 100 825 121.60 -0.745 162.12 -1.366 202.66 -2.445
Duo Discus  (Pil) 20.0 click 45 45.1 424 537 201 700 94.06 -0.720 155.49 -1.428 188.21 -2.721
Duo Discus  (Pas) 20.0 click 45 45.4 424 628 201 700 106.50 -0.794 168.11 -1.544 201.31 -2.942
Grob G-103 Twin II  (Pil) 17.5 click 36 36.5 380 494 0 580 90.75 -0.735 161.42 -1.798 207.54 -3.502
Grob G-103 Twin II  (Pas) 17.5 click 36 36.5 380 580 0 580 99.00 -0.800 175.01 -1.949 225.02 -3.797
Janus B  (18.2m  Pil) 18.2 click 43 42.6 395 508 170 620 105.70 -0.695 157.65 -1.816 192.68 -3.628
Janus B  (18.2m  Pas) 18.2 click 43 42.6 395 603 170 620 115.50 -0.758 171.79 -1.979 209.96 -3.953
Nimbus 3D  (24.6m   Pil) 24.6 click 57 56.3 508 621 168 750 87.47 -0.433 163.86 -1.381 204.27 -2.302
Nimbus 3D  (24.6m   Pas) 24.6 click 57 56.4 508 712 168 750 93.64 -0.463 175.42 -1.479 218.69 -2.464
Nimbus 3DM  (24.6m  Pil) 24.6 click 57 56.8 636 748 168 820 103.86 -0.510 157.42 -1.038 222.24 -2.528
Nimbus 3DM  (24.6m  Pas) 24.6 click 57 56.6 636 820 168 820 114.97 -0.565 157.42 -0.981 222.24 -2.331
Nimbus 4DM  (26m  Pil) 26.0 click 60 59.4 616 729 168 820 94.31 -0.455 141.47 -0.825 179.90 -1.533
Nimbus 4DM  (26m  Pas) 26.0 click 60 59.6 616 820 168 820 100.01 -0.480 150.01 -0.875 190.76 -1.625
Nimbus 4D Pil 26.5 click 60 59.8 538 652 303 750 99.00 -0.460 133.73 -0.779 170.07 -1.449
Nimbus 4D Pil+Pas 26.5 click 60 60.2 538 743 303 750 107.50 -0.497 142.74 -0.832 181.51 -1.546
Stemme S10 Pil 23 click 46.3 46.2 646 759 0 759 125.80 -0.820 158.51 -1.329 193.74 -2.169
Stemme S10 Pil+Pas 23 click 46.3 45.7 646 850 0 850 133.47 -0.826 167.75 -1.406 205.03 -2.301
                 

Note about the Author:
Carl Herold is the author of the US Handicapping System used in all Sports Class contests in the USA, and since recently also a WinPilot PRO user. For more info about his background you can read his soaring biography.
If you have a question, comment, or suggestion regarding the data above, he can be reached at: cdherold@charter.net .