# Detailed1-KilotonNuclear EffectsCalculations

(updated 26 December 2011)

### References:

Weapon Effects v2.1 (21 December 1984) by Horizons Technology under contract to the Defense Nuclear Agency
Principles of Naval Weapons Systems by Craig M. Payne

### How to scale to find Optimum Height of Burst

Find the curve for the desired effect on the charts/graphs below; for 15 PSI peak static overpressure, it’s around 200 meters.

Then use the following equation:

1kTeffect * Yield(1/3) = Scaled_Number

to find the number you want.

If you wanted to know the optimum height of burst for a 225 kiloton weapon based off the 5 PSI curves below; you’d first find that the optimum height at 1 kiloton was 300~ meters; and then do the following equation:

(300 meters) * (225 kilotons)1/3 = 1,824.7 meters

This number can then be used with Weapon Effects v2.1 (21 December 1984) to generate more detailed numbers for your desired device.

 PEAK STATIC OVERPRESSURE % of Ideal HOB HOB (m) 3 PSI 5 PSI 15 PSI 25 PSI 50 PSI 300 PSI 1000 PSI 2000 PSI 0.00% 0 647.318 466.311 253.725 198.599 146.369 72.5497 46.956 36.8004 5.00% 17.5 661.167 476.176 257.28 200.137 145.729 70.6922 47.3859 38.3706 7.50% 26.25 668.346 481.309 259.149 200.943 145.396 69.9724 47.5347 38.8737 7.14% 25 667.284 480.556 258.879 200.827 145.444 70.0667 47.5159 38.8121 10.00% 35 675.608 486.58 261.071 201.762 145.062 69.3883 47.6457 39.1918 14.29% 50 688.453 495.89 264.499 203.221 144.49 68.6441 46.5828 24.7564 15.00% 52.5 690.636 497.483 265.084 203.477 144.397 68.5461 40.8532 20.788 21.43% 75 710.817 512.293 270.515 205.729 143.587 67.306 25.00% 87.5 722.442 520.893 273.65 206.993 143.168 46.9492 28.57% 100 734.361 529.8 276.861 208.252 142.786 18.8596 35.00% 122.5 756.554 546.467 282.808 210.484 142.175 35.71% 125 759.1 548.384 283.497 210.73 142.114 40.00% 140 774.512 560.077 287.572 212.18 140.459 42.86% 150 785.021 568.06 290.346 213.122 103.277 50.00% 175 812.161 588.875 297.437 213.464 61.469 57.14% 200 840.387 610.774 301.973 145.951 64.29% 225 868.372 631.576 280.586 106.216 71.43% 250 894.466 648.478 198.851 75.00% 262.5 906.421 654.84 182.129 78.57% 275 917.565 659.541 162.745 85.00% 297.5 935.008 662.915 116.882 85.71% 300 936.741 662.816 110.333 88.57% 310 943.209 661.287 78.0818 90.00% 315 946.159 659.771 54.6173 92.86% 325 951.457 655.057 100.00% 350 960.85 628.41 107.14% 375 963.833 548.73 114.29% 400 958.722 457.889 115.00% 402.5 957.668 455.727 125.00% 437.5 928.47 422.24 128.57% 450 908.649 408.886 130.00% 455 898.544 403.296 140.00% 490 756.73 359.993 142.86% 500 713.045 345.969 150.00% 525 682.012 306.708 157.14% 550 662.022 259.221 160.00% 560 653.584 236.849 171.43% 600 617.065 98.474 200.00% 700 500.772 225.00% 787.5 347.286 228.57% 800 317.436 230.00% 805 304.535 240.00% 840 187.6 242.86% 850 135.036 245.00% 857.5 73.8105 245.71% 860 33.9088

 Thermal Fluence (25 km visibility) HOB (m) 3 cal/cm2 5 cal/cm2 8 cal/cm2 14 cal/cm2 25 cal/cm2 50 cal cm/2 0 321.28 250.958 202.246 160.026 128.777 101.502 25 937.702 729.534 578.479 438.344 328.409 232.045 50 936.792 728.298 576.889 436.22 325.554 227.975 75 935.206 726.208 574.212 432.649 320.737 221.027 100 932.929 723.242 570.421 427.579 313.849 210.901 150 926.417 714.655 559.428 412.732 293.294 178.847 200 917.086 702.416 543.624 391.028 261.796 120.39 225 911.365 694.874 533.829 377.213 240.668 62.2303 250 904.912 686.34 522.626 361.165 214.607 300 889.782 666.132 495.705 320.913 136.295 325 881.054 654.359 479.728 295.613 54.4189 350 871.48 641.384 461.858 265.572 400 849.94 611.609 419.414 181.87 430 835.283 590.963 388.641 90.509 500 795.661 533.302 293.407 550 762.194 481.742 183.49 575 743.629 451.717 74.8607 600 723.723 418.046 700 628.046 212.41 725 599.182 97.6744 800 495.15 900 275.475 925 174.263 940 50.3964

 Total Instantaneous Tissue Dose (Modern Thermonuclear Device, Single YieldFission Fraction of 0.5Relative Air Density of 1) HOB (m) 100 rads 300 rads 1,000 rads 10,000 rads 0 994.84 832.136 666.78 390.416 50 1038.91 877.402 713.16 435.03 100 1058.67 894.814 727.803 442.575 200 1074.33 904.716 731.029 427.991 300 1076.71 899.508 716.43 384.229 400 1049.97 867.074 675.145 297.234 500 1014.7 824.644 620.45 124.435 600 970.541 771.086 548.98 700 916.081 703.829 452.941 800 849.31 618.663 311.783 850 810.511 567.42 199.659 880 785.296 533.277 69.7325 900 767.658 508.909 1,000 668.792 362.656 1,050 598.526 202.415 1,060 582.97 149.445 1,070 566.82 59.4038 1,100 514.032 1,200 246.244 1,225 82.4725