A study of the crack damage in fuel-filled tank walls due to ballistic penetrators.
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Authors
Fahrenkrog, Steven Lock
Subjects
Advisors
Ball, Robert E.
Date of Issue
1976-03
Date
March 1976
Publisher
Monterey, California. Naval Postgraduate School
Language
en_US
Abstract
A major goal of the hydraulic ram survivability program for aircraft fuel tanks is the development of analytical-numerical tools for the accurate prediction of damage to the tank due to a ballistic projectile. This report presents a method for predicting the amount of cracking of a penetrated tank wall due to the penetrating projectile and the hydraulic ram loading. The method uses computer codes to predict the fluid pressure on the wall and the stresses in the wall. The stresses are compared with empirical data on the fracture of thin cracked plates to obtain a prediction of the final crack length. A comparison of predicted cracks with actual cracks that occurred in plates tested by Naval Weapons Center, China Lake, California is included. Good correlation is obtained when the magnitude of the predicted strains is adjusted to agree with the magnitude of the measured strains by a correction factor.
Type
Thesis
Description
Series/Report No
Department
Aeronautics
Organization
Naval Postgraduate School (U.S.)
Identifiers
NPS Report Number
Sponsors
Funder
Format
Citation
Distribution Statement
Approved for public release; distribution is unlimited.
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.