The object desired is to present to the beginner in simple language the underlying principles of the design of guns, so far as the elastic strength of the tubes of the gun is concerned.
First the elementary "stress" and " strain formula" are derived and explained. From these formulae the" pressure formula" are derived, showing the limits of pressure at different tube surfaces for any gun.
Diagrams are used to aid in understanding the true meaning of these formula, which have been simplified in order to save work in the computations.
Professor Alger's "Elastic Strength," Commander Nulton's "Graphic Representation" and Lieut.-Col. Lissak's "Ordnance and Gunnery," supply the material, which is condensed and simplified.
ELEMENTARY STRAIN FORMULAE: LIMITS OF PRESSURE FOR SOLIDGUN.
Construction of Naval Guns.