Analysis of the Waterhammer concept as a mine countermeasure system
Karun, Ronald J.
MetadataShow full item record
The purpose of this thesis is to provide an analysis of the Waterhammer concept design. Waterhammer is a device intended to generate repetitive shock waves to clear a path through the very shallow water region for amphibious operations. These repetitive shock waves are intended to destroy obstructions and mines alike. This thesis analyzes the energy budget of the deflagration processes and the basic principles of shock waves and acoustic saturation. When the source amplitude is increased to very high levels, acoustic saturation sets in, a state in which the amplitude of the received signal approaches a limiting value, independent of the source amplitude. Acoustic saturation thus will set physical constraints in the design of Waterhammer. Furthermore, as the pulse propagates in the shallow water environment, reflections from the water's surface and bottom floor will spread (he energy in the water column thus reducing the energy density, These combined effects can affect the intended performance of Waterhammer. The results of the analysis in this thesis lead to the conclusion that Waterhammer may not be viable in its present concept design
Showing items related by title, author, creator and subject.
A numerical study of the validity regimes of weak fluctuation theory for ocean acoustic propagation through random internal wave sound speed fields Tombul, Serdar. (Monterey, California. Naval Postgraduate School, 2007-03);Results of the Acoustic Thermometry of Ocean Climate (ATOC) project's experiments have shown that at 75 Hz, the Rytov acoustic scattering theory using the Garrett-Munk (GM) internal wave spectrum may be used for predicting ...
Sakamoto, Philemon (Monterey, California: Naval Postgraduate School, 2016-12);This thesis considers three notable developments in German energy policy: the Nord Stream 2 natural gas pipeline project between Russia and Germany, the decision to phase out nuclear energy, and European Union (EU) and ...
Blau, Joseph A.; Johnson, Bonnie W.; Cohn, Keith; Green, John (Monterey, California: Naval Postgraduate SchoolMonterey, California. Naval Postgraduate School, 2019-12); NPS-19-N003-ADirected Energy Weapons (DEW) will proliferate and become a threat exploited by adversaries due to high potential mission success and low cost compared to traditional weapons. Counter DEW (CDEW) methods and capabilities ...