igh angle fire is considered.
These functions, T, S, D, I, A, are shown numerically in the following
extract from an abridged ballistic table, in which the velocity is taken as
the argument and proceeds by an increment of 10 f/s; the column for p is
the one determined by experiment, and the remaining columns follow by
calculation in the manner explained above. The initial values of T, S, D,
I, A must be accepted as belonging to the anterior portion of the table.
In any region of velocity where it is possible to represent p with
sufficient accuracy by an empirical formula composed of a single power of
v, say v^m, the integration can be effected which replaces the summation in
(10), (16), and (24); and from an analysis of the Krupp experiments Colonel
Zabudski found the most appropriate index m in a region of velocity as
given in the following table, and the corresponding value of gp, denoted by
f(v) or v^m/k or its equivalent Cr, where r is the retardation.
ABRIDGED BALLISTIC TABLE.
-----+--------+-------+---------+-------+----------+-------+--------
v. | p. [Delta]T.| T. [Delta]S.| S. [Delta]D.| D.
-----+--------+-------+---------+-------+----------+-------+--------
f/s | | | | | | |
1600 | 11.416 | .0271 | 27.5457 | 43.47 | 18587.00 | .0311 | 49.7729
1610 | 11.540 | .0268 | 27.5728 | 43.27 | 18630.47 | .0306 | 49.8040
1620 | 11.662 | .0265 | 27.5996 | 43.08 | 18673.74 | .0301 | 49.8346
1630 | 11.784 | .0262 | 27.6261 | 42.90 | 18716.82 | .0296 | 49.8647
| | | | | | |
1640 | 11.909 | .0260 | 27.6523 | 42.72 | 18759.72 | .0291 | 49.8943
1650 | 12.030 | .0257 | 27.6783 | 42.55 | 18802.44 | .0287 | 49.9234
1660 | 12.150 | .0255 | 27.7040 | 42.39 | 18844.99 | .0282 | 49.9521
1670 | 12.268 | .0252 | 27.7295 | 42.18 | 18887.38 | .0277 | 49.9803
| | | | | | |
1680 | 12.404 | .0249 | 27.7547 | 41.98 | 18929.56 | .0273 | 50.0080
1690 | 12.536 | .0247 | 27.7796 | 41.78 | 18971.54 | .0268 | 50.0353
1700 | 12.666 | .0244 | 27.8043 | 41.60 | 19013.32 | .0264 | 50.0621
1710 | 12.801 | .0242 | 27.8287 | 41.41 | 19054.92 | .0260 | 50.0885
| | | | | | |
1720 | 12.900 | .0239 | 27.8529 | 41.23 | 19096.33 | .0256 | 50.1145
1730 | 13.059 | .0237 | 27.8768 | 41.06 | 19137.56 | .0252 | 50.1401
1
|