About: Kingery-Bulmash Blast Parameter Calculator

Airblast parameters calculated from range, NEQ and TNT equivalence using the polynomials described in "Airblast parameters from TNT spherical air burst and hemispherical surface burst" by Charles N. Kingery and Gerald Bulmash, Technical report ARBL-TR-02555, dated April 1984.

Kingery-Bulmash Blast Parameter Calculator

Equations to estimate blast over-pressure at range have been developed by Charles Kingery and Gerald Bulmash. These equations are widely accepted as authoritative engineering predictions for determining free-field pressures and loads on structures. The equations in this calculator are based on data from explosive tests using charge weights from less than 1kg to over 400,000kg.

This calculator is based on the Kingery-Bulmash equations used to model a hemispheric, surface explosion, and should not be used for applications requiring the calculation of values for a spherical burst in the air.

TNT Weight for Pressure (kg): TNT Weight for Impulse (kg):
Incident Pressure (kPa): Incident Impulse (kPa-ms):
Reflected Pressure (kPa): Reflected Impulse (kPa-ms):
Time of Arrival (ms): Positive Phase Duration (ms):
Shock Front Velocity (m/s):