Abstract
FROM time to time it has been suggested to me that some reduction in the coefficients of resistance deduced from my experiments made in 1867–68, is required to adapt them for use in connection with the improved guns of more recent times. I do not agree with those suggestions. My coefficients were most carefully deduced from experiments made with ogival-headed shot fired at very low elevations so as to secure ranges of about 500 or 600 yards, and the observations were made near the gun. The 5-inch gun was a remarkably good gun, and from the numerous records it gave had a preponderating effect on the final result; while an unsteady shot cut only a few screens, and had a very trifling influence. It seems, therefore, that the coefficients were derived from shot moving very nearly in the direction of their axes. I have applied these coefficients to calculate ranges for comparison with Commander May's (R.N.) range-table for the 12-inch muzzle-loading gun (based on practice 1885); muzzle velocity, 1892 f.s.; “jump,” 6 minutes.
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BASHFORTH, F. Calculation of Ranges, etc., of Elongated Projectiles . Nature 38, 468 (1888). https://doi.org/10.1038/038468a0
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DOI: https://doi.org/10.1038/038468a0