Engineering Volume 14

Engineering Volume 14

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1872 edition. Excerpt: ...each of which is intended to carry four 35-wn guns, in two turrets, throwing, at each discharge, 2300 lb. of iron, with a striking force at their muzzles of 31,412 foot-tons. Enormous as is this offensive power, it hardly bears a due proportion to the defensive superiority of the Devastation over other sea-going shi s. In bombarding fortresses, the sums of the squares of t 6 bursting charges of the shells may be taken as the measure of olfensive power. Adding together the squares of their bursters, the relative shell power of these shi s, on one broadside, is: Devastation, 1620; Monarch. 826; and Sultan, 3404. Before reductions were made to suit a bad system of rifling, the relative bombarding values of these shilps would have been: Devastation, 1620; Monarch, 8767; an Sultan. on one broadside only, 4744. The battering power of given ships can no longer be represented by the weights of their pro'cctiles, but by these multiplied into the squares of their ve ocities. The velocity is, if the gun be truly rifled, dependent on the powder charge. That it does not correspond with the increase of the charges in the 35-ton gun is obviously due to its not being truly rifled. Instead of altering the riding so as to allow the shot to esca e with a rapidity pro ortioned to the powder charge, this lhtter has been reduce to 1101b. in weight, diminishing the Devasta-tion's battering power by some 8000 foot-tons, or the striking force of a 35-ton gun; so that in the mdlea of a naval action, when hostile ships might be attacking on both sides, the energy or striking force of the Devastation's armament is thus made 5000 foot-tons less than that of the Monarch, and only three-fifths that of the broadside ship Sultan, If, in such a more

Product details

  • Paperback | 830 pages
  • 189 x 246 x 42mm | 1,451g
  • United States
  • English
  • black & white illustrations
  • 1236852788
  • 9781236852786