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    The Development of Armor-piercing Shells with Suggestions for their Improvement
    The Development of Armor-piercing Shells with Suggestions for their Improvement
    The Development of Armor-piercing Shells with Suggestions for their Improvement
    Ebook60 pages36 minutes

    The Development of Armor-piercing Shells with Suggestions for their Improvement

    By Carlos De Zafra

    ()

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    LanguageEnglish
    PublisherArchive Classics
    Release dateNov 27, 2013
    The Development of Armor-piercing Shells with Suggestions for their Improvement

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      Book preview

      The Development of Armor-piercing Shells with Suggestions for their Improvement - Carlos De Zafra

      The Project Gutenberg EBook of The Development of Armor-piercing Shells, by

      Carlos de Zafra

      This eBook is for the use of anyone anywhere at no cost and with

      almost no restrictions whatsoever. You may copy it, give it away or

      re-use it under the terms of the Project Gutenberg License included

      with this eBook or online at www.gutenberg.net

      Title: The Development of Armor-piercing Shells

      with Suggestions for their Improvement

      Author: Carlos de Zafra

      Release Date: August 25, 2010 [EBook #33535]

      Language: English

      *** START OF THIS PROJECT GUTENBERG EBOOK DEVELOPMENT OF ARMOR-PIERCING SHELLS ***

      Produced by The Online Distributed Proofreading Team at

      http://www.pgdp.net

      THE DEVELOPMENT

      OF

      Armor-piercing Shells

      (With Suggestions for their Improvement)

      By

      CARLOS de ZAFRA, M.E.

      Faculty Lecturer, New York University

      1915

      Historical

      The manufacture of projectiles to meet the requirements of the modern science of warfare has been brought to its present high stage of development through a long series of experiments based, at first, more upon theory than perhaps any other branch of engineering.

      In the days of wooden vessels very little thought was given to the actual physical properties of the then cast iron spherical mass. The gun was the agent upon which depended the ability of the projectile to penetrate. The projectile, being confronted by so slight a resisting material as wood, was distorted or physically affected to practically no degree by the resisting medium. When fighting yard-arm to yard-arm the power of the gun was sufficient to fully penetrate the enemy, while at long ranges considerable damage would be executed without in the least impairing, by the shock of impact (which was inconsiderable as compared with modern conditions) the physical condition of the shot.

      In the days of the all-wood vessel the guns were of the smooth-bore class divided into various types with nomenclature according to the size or weight of the shot, very much as they are today, i.e., 3-pounder, 6-pounder, 4-inch, 10-inch, etc.

      A general review of the gradual development of projectiles will be found beneficial and helpful to a more complete understanding of the complexities involved in overcoming the present day difficulties.

      In the smooth-bore gun spherical shot was used. This was by no means a tight fitting device. Upon firing the gun considerable powder pressure was lost through the rapid escape of the gases past the shot between it and the bore of the gun. This would most naturally be expected since at best the surface of contact between the shot and the bore would be only a circular line quickly eliminated or worn away through friction under the high temperature of the burning gases behind the shot. The most obvious way to eliminate that wearing away of the bearing surface was to increase it, in doing which the escape of gas past the projectile would be greatly checked, and the gas pressure behind the projectile increased (exerting, thereby, a greater propelling force) and imparting to the projectile greater velocity, increased momentum, and consequent increased penetration. But an increase in the bearing surface of the shot necessitated an

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