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Evaluation of Management Routes for the Paldiski Sarcophagi

Description: The necessity to develop the submarine fleet in Russia required constructing a special training base for the training of submarine crews. To this purpose two prototypes of nuclear power units, close analogous to those fitting out nuclear submarines were constructed and commissioned in the sixties on the Navy training centre's base located in Paldiski (Pakri peninsula, Estonia). In 1994, nuclear fuel was discharged from the reactors and transported to Russia while the reactors themselves were pr… more
Date: February 27, 2002
Creator: Antonel, L.; Robin, B.; Miller, J. W.; Putnik, H. & Simanovski, Y.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

An acoustically controlled tetherless underwater vehicle for installation and maintenance of neutrino detectors in the deep ocean

Description: The task of installing and servicing high energy neutrino detectors in the deep ocean from a surface support vessel is problematic using conventional tethered systems. An array of multiple detector strings rising 500 m from the ocean floor, and forming a grid with 50 m spacing between the strings, presents a substantial entanglement hazard for equipment cables deployed from the surface. Such tasks may be accomplished with fewer risks using a tetherless underwater remotely operated vehicle that … more
Date: February 1, 1997
Creator: Ballou, Philip J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Examination of a Nonregenerative Heat Exchanger From the u.s.s. Nautilus (Ssn-571)

Description: Selected components from a staianless steel nonregenerative heat exchanger removed from the U.S.S. Nautilus (SSN571) have been examined for evidence of stress-corrosion cracking. The examination was conducted on three baffle plates, all primary-face seal welds, and the tubes and the surrounding tube sheets of 7 out of a total of 35 tubes. Maximum operating temperature of the heat exchanger was 260 ction prod- F for the inlet primary water and 164 ction prod- F for the exit secondary water. Chlo… more
Date: February 19, 1960
Creator: Berry, W. E.; Stewart, O. M. & Fink, F. W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Blanket Biological Review for General Maintenance Activities within Active Burial Grounds, 200 E and 200 W Areas, ECR No. 99-200-042

Description: No plant and animal species protected under the Endangered Species Act, candidates for such protection, or species listed by the Washington state government were observed in the vicinity of the proposed sites. Piper's daisy is a Washington State Sensitive plant species, and as such is a Level III resource under the Hanford Site Biological Resources Management Plan. Compensatory mitigation is appropriate for this species when adverse impacts cannot be avoided. The stalked pod and crouching milkv… more
Date: April 30, 1999
Creator: Brandt, Charles A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Algorithms and analysis for underwater vehicle plume tracing.

Description: The goal of this research was to develop and demonstrate cooperative 3-D plume tracing algorithms for miniature autonomous underwater vehicles. Applications for this technology include Lost Asset and Survivor Location Systems (L-SALS) and Ship-in-Port Patrol and Protection (SP3). This research was a joint effort that included Nekton Research, LLC, Sandia National Laboratories, and Texas A&M University. Nekton Research developed the miniature autonomous underwater vehicles while Sandia and T… more
Date: July 1, 2003
Creator: Byrne, Raymond Harry; Savage, Elizabeth L. (Texas A&M University, College Station, TX); Hurtado, John Edward (Texas A&M University, College Station, TX) & Eskridge, Steven E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Adaptive ocean acoustic processing for a shallow ocean experiment

Description: A model-based approach is developed to solve an adaptive ocean acoustic signal processing problem. Here we investigate the design of model-based identifier (MBID) for a normal-mode model developed from a shallow water ocean experiment and then apply it to a set of experimental data demonstrating the feasibility of this approach. In this problem we show how the processor can be structured to estimate the horizontal wave numbers directly from measured pressure sound speed thereby eliminating the … more
Date: July 19, 1995
Creator: Candy, J. V. & Sullivan, E. J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Broadband acoustic source processing in a noisy shallow ocean environment

Description: Acoustic sources found in the ocean environment are spatially complex and broadband, complicating the analysis of received acoustic data considerably. A model-based approach is developed for a broadband source in a shallow ocean environment characterized by a normal-mode propagation model. Here we develop the optimal Bayesian solution to the broadband pressure-field enhancement and modal function extraction problem.
Date: July 18, 1996
Creator: Candy, J. V. & Sullivan, E. J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Model-based localization for a shallow ocean experiment

Description: In this paper a modern approach was developed to solve the passive localization problem in ocean acoustics using the state-space formulation. It is shown that the inherent structure of the resulting processor consists of a parameter estimator coupled to a nonlinear optimization scheme. The parameter estimator is design using an acoustic propagation model in developing the modern identifier required for localization. The detection and localization of an acoustic source has long been the motivati… more
Date: July 19, 1995
Creator: Candy, J. V. & Sullivan, E. J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Model-based ocean acoustic passive localization

Description: The detection, localization and classification of acoustic sources (targets) in a hostile ocean environment is a difficult problem -- especially in light of the improved design of modern submarines and the continual improvement in quieting technology. Further the advent of more and more diesel-powered vessels makes the detection problem even more formidable than ever before. It has recently been recognized that the incorporation of a mathematical model that accurately represents the phenomenolo… more
Date: January 24, 1994
Creator: Candy, J. V. & Sullivan, E. J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Model-based processing for shallow ocean environments: The broadband problem

Description: Most acoustic sources found is the ocean environmental are spatially complex and broadband. When propagating in a shallow ocean these source characteristics complicate the analysis of received acoustic data considerably. The enhancement of broadband acoustic pressure- field measurements using a vertical array is discussed. Here a model- based approach is developed for a broadband source using a normal- mode propagation model.
Date: January 31, 1996
Creator: Candy, J. V. & Sullivan, E. J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Radioactive Legacy of the Russian Pacific Fleet Operations. Final Report

Description: There have been extensive studies of the current and potential environmental impact of Russian Northern fleet activities. However, despite the fact that the total number of ships in both fleets are comparable, there have been very few studies published in the open literature of the impact of the Pacific fleet. This study of the Pacific fleet's impact on neighboring countries was undertaken to partially remedy this lack of analysis. This study is focused on an evaluation of the inventory of majo… more
Date: March 25, 2003
Creator: Compton, K. L.; Novikov, V. M.; Parker, F. L. & Sivintsev, Y. U.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Application of Polynomial and Radial Basis Function Maps to Signal Masking

Description: The objective of this research was to develop and demonstrate a technique for encrypting information by using a masking signal that closely approximates local ambient noise. Signal masking techniques developed to date have used nonlinear differential equations, spread spectrum, and various modulation schemes to encode information. While these techniques can effectively hide a signal, the resulting masks may not appear as ambient noise to an observer. The advantage of the proposed technique over… more
Date: January 1, 1998
Creator: Damiano, B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Membrane Treatment of Liquid Salt Bearing Radioactive Wastes

Description: The main fields of introduction and application of membrane methods for preliminary treatment and processing salt liquid radioactive waste (SLRW) can be nuclear power stations (NPP) and enterprises on atomic submarines (AS) utilization. Unlike the earlier developed technology for the liquid salt bearing radioactive waste decontamination and concentrating this report presents the new enhanced membrane technology for the liquid salt bearing radioactive waste processing based on the state-of-the-a… more
Date: February 25, 2003
Creator: Dmitriev, S. A.; Adamovich, D. V.; Demkin, V. I. & Timofeev, E. M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Petrology and Geochemistry of Boninite Series Volcanic Rocks,Chichi-jima, Bonin Islands, Japan

Description: An Eocene submarine boninite series volcanic center isexposed on the island of Chichi-jima, Bonin Islands, Japan. Five rocktypes, boninite, bronzite andesite, dacite, quartz dacite, and rhyolite,were distinguished within the boninite volcanic sequence on the basis ofpetrographic and geochemical observations. Boninite lavas contain highmagnesium, nickel, and chromium contentsindicative of primitive melts,but have high silica contents relative to other mantle-derived magmas.All boninite series la… more
Date: January 1, 1977
Creator: Dobson, Patrick F.; Blank, Jennifer G.; Maruyama, Shigenori & Liou, J.G.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Feasibility of MHD submarine propulsion. Phase II, MHD propulsion: Testing in a two Tesla test facility

Description: This report describes the work performed during Phase 1 and Phase 2 of the collaborative research program established between Argonne National Laboratory (ANL) and Newport News Shipbuilding and Dry Dock Company (NNS). Phase I of the program focused on the development of computer models for Magnetohydrodynamic (MHD) propulsion. Phase 2 focused on the experimental validation of the thruster performance models and the identification, through testing, of any phenomena which may impact the attractiv… more
Date: September 1, 1992
Creator: Doss, E. D. & Sikes, W. C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Performance and flow characteristics of MHD seawater thruster

Description: The main goal of the research is to investigate the effects of strong magnetic fields on the electrical and flow fields inside MHD thrusters. The results of this study is important in the assessment of the feasibility of MHD seawater propulsion for the Navy. To accomplish this goal a three-dimensional fluid flow computer model has been developed and applied to study the concept of MHD seawater propulsion. The effects of strong magnetic fields on the current and electric fields inside the MHD th… more
Date: January 1, 1990
Creator: Doss, E.D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Feasibility of MHD submarine propulsion

Description: This report describes the work performed during Phase 1 and Phase 2 of the collaborative research program established between Argonne National Laboratory (ANL) and Newport News Shipbuilding and Dry Dock Company (NNS). Phase I of the program focused on the development of computer models for Magnetohydrodynamic (MHD) propulsion. Phase 2 focused on the experimental validation of the thruster performance models and the identification, through testing, of any phenomena which may impact the attractiv… more
Date: September 1, 1992
Creator: Doss, E.D. (ed.) (Argonne National Lab., IL (United States)) & Sikes, W.C. (ed.) (Newport News Shipbuilding and Dry Dock Co., VA (United States))
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

MHD (magnetohydrodynamic) undersea propulsion: A novel concept with renewed interest

Description: This paper discusses the reasons for the national and international renewed interest in the concept of MHD seawater propulsion. The main advantages of this concept are presented, together with some of the technical challenges that need to be overcome to achieve reliability, performance, and stealth. The paper discusses in more detail some of the technical issues and loss mechanisms influencing the thruster performance in terms of its electrical efficiency. Among the issues discussed are the jet… more
Date: January 1, 1990
Creator: Doss, E.D.; Geyer, H.K. (Argonne National Lab., IL (USA)) & Roy, G.D. (Office of Naval Research, Arlington, VA (USA))
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Glider communications and controls for the sea sentry mission.

Description: This report describes a system level study on the use of a swarm of sea gliders to detect, confirm and kill littoral submarine threats. The report begins with a description of the problem and derives the probability of detecting a constant speed threat without networking. It was concluded that glider motion does little to improve this probability unless the speed of a glider is greater than the speed of the threat. Therefore, before detection, the optimal character for a swarm of gliders is sim… more
Date: March 1, 2005
Creator: Feddema, John Todd & Dohner, Jeffrey Lynn
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Start 2: Thinking one move ahead

Description: At their summit meeting in the spring of 1990, Presidents Bush and Gorbachev issued a joint statement expressing their intentions to continue the process of strategic arms control beyond the Strategic Arms Reduction Treaty (START), which was eventually signed in July 1991, toward agreement on further reductions. They set general goals for negotiation of a follow-on treaty to START, which has been called START II. President Bush`s historic speech on September 27, 1991, reinforced those goals and… more
Date: November 1, 1991
Creator: Gaines, L. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Start 2: Thinking one move ahead

Description: At their summit meeting in the spring of 1990, Presidents Bush and Gorbachev issued a joint statement expressing their intentions to continue the process of strategic arms control beyond the Strategic Arms Reduction Treaty (START), which was eventually signed in July 1991, toward agreement on further reductions. They set general goals for negotiation of a follow-on treaty to START, which has been called START II. President Bush's historic speech on September 27, 1991, reinforced those goals and… more
Date: November 1, 1991
Creator: Gaines, L.L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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