The Hopkinson-Cranz Scaling Law Range calculator computes for the Range estimation (R) needed when dealing with ammunition management.
INSTRUCTIONS: Choose the preferred units and enter the following:
Range Estimation: The calculator computes the range (R) in meters. However, this can be automatically converted into other length units via the pull-down menu.
Many States use rules based upon the explosives, their quantity, and the distance from the explosive to where people are at risk. These rules are known as Quantity-Distance (Q-D) criteria, and are based on the approach derived from the Hopkinson-Cranz Scaling Law5 6, which is further amended by a range of coefficients. It is the basis of much of the work on the estimation of appropriate quantity and separation distances.
Examples of ammunition distance coefficients used in the field: