Stabilized Nuclear Burst Cloud (Surface Burst)
a. Nuclear Burst Angular Cloud Width.
Figure 1-3 is used to determine yield from nuclear burst angular cloud width
and distance to ground zero (or flash-to-bang time). The right-hand scale
is the nuclear burst angular cloud width in mils or degrees, the center
scale is the flash-to-bang time in seconds and the distance in kilometers to
ground zero, and the left-hand scale is the yield in kilotons (KT). To use
Figure 1-3, place a hairline from the point of the right-hand scale,
representing the nuclear burst angular cloud width at 5 minutes after
detonation, through the point on the center scale representing flash-to-bang
time or distance to ground zero.
At the point of intersection of the
hairline and the left-hand scale, read the yield.
Example: A nuclear
Angular cloud width
Using the yield estimation nomogram, Figure 1-3, determine the approximate
yield. It is emphasized that these yield calculations are field estimates.