Page:Optimum height for the bursting of a 105mm shell.pdf/12

We may finally remark that if the shell bursts at 75 ft above the ground, the area which is effectively sprayed by the fragments is

$160\,{\text{ft by}}\,20\,{\text{ft}}\qquad ({\text{target area}}=5\,{\text{sq ft}})$

and

$130\,{\text{ft by}}\,20\,{\text{ft}}\qquad ({\text{target area}}=2-1/2\,{\text{sq ft}})$

Accordingly, when firing, it would be advantageous to have the shells burst at about 150 ft apart sideways and 20 ft. apart depth-wise (See Fig. 2)

Summary

This paper is devoted to determining the height at which it is most advantageous to have 105mm shell burst in order that the maximum injury may be inflicted on personnel. On the basis of the experimental data of Tolch on the fragmentation of the 105mm shell it is concluded that the optimum height is about 75 ft. Also when the shell does burst at this height, it effectively covers an area of 150 ft by 20 ft.

S. Chandrasekhar