Accession Number : AD0781401

Title :   Experimental Investigation of Hydraulic Ram.

Descriptive Note : Master's thesis,

Corporate Author : NAVAL POSTGRADUATE SCHOOL MONTEREY CALIF

Personal Author(s) : Mueller,Larry Scott

Report Date : MAR 1974

Pagination or Media Count : 45

Abstract : Extensions of the investigations aimed at preventing aircraft destruction through the effects of hydraulic ram were conducted. By analyzing spark shadowgraphs the existence of a family of transient shock waves was confirmed. These shock waves were created by a surface anomaly in a projectile and are not unlike those found in fragmentary warheads. In an attempt to measure wall deflections subsequent to projectile impact, a system based on optical fiber proximity probes was investigated. Mathematical models based on grid distortions were used as a means of calculating shock wave pressures. The AFIT thesis correlating cavity size, energy and radius to underwater explosions was verified from an analysis of 16 mm films. (Author)

Descriptors :   *JET AIRCRAFT, *FUEL TANKS, *VULNERABILITY, FRAGMENTATION AMMUNITION, TERMINAL BALLISTICS, PENETRATION, SHOCK WAVES, CATASTROPHIC CONDITIONS, THESES

Subject Categories : Aircraft
      Combustion and Ignition

Distribution Statement : APPROVED FOR PUBLIC RELEASE