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in publisher: "Johns Hopkins University. Applied Physics Laboratory."  
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Stress analysis of disconnected structures in contact through finite element gaps. [SAASGAPS code]

Description: A numerical procedure is presented for analyzing thermal stress problems of disconnected structures in contact across separations or gaps. The new procedure is called SAASGAPS, an adaptation of the basic SAAS III computer program. The SAAS program uses the finite element method and allows analyses of plane and axisymmetric bodies with temperature dependent material properties, subject to thermal and mechanical loads. A secant modulus approach with a bilinear stress-strain curve is used for elas… more
Date: July 1976
Creator: Stadter, J. T. & Weiss, R. O.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Thermal stress evaluation of the Viking RTG heat shield

Description: Thermal stress analyses of the Viking RTG heat shield are presented. The primary purpose of the analyses was to determine the effects of the end cap and the finite length of the heat shield on the peak tensile stress in the barrel wall. The SAAS III computer code was used to calculate the thermal stresses; axisymmetric and plane section analyses were performed for a variety of temperature distributions. The study consisted of three parts. In the first phase, the influence of the end cap on the … more
Date: March 1976
Creator: Stadter, J. T. & Weiss, R. O.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Evaluating aeroshell materials for the MJS/multi-hundred watt heat source. [Reentry survival from an aborted launch]

Description: In order to evaluate the possibility of improving upon an existing aeroshell design for the Multi-Hundred Watt power source, a trade-off study was conducted on a variety of candidate aeroshell materials. Mariner Jupiter/Saturn mission requirements and aeroshell material criteria were established to form a basis for the evaluation. Material data searches and reentry analyses were made to permit preparation of a quantitative comparison matrix. Depending upon the designer's constraints, either the… more
Date: July 1976
Creator: Bennett, G. L.; Hagan, J. C. & Tantino, D. C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Synthesis and characterization of templated ion exchange resins for the selective complexation of actinide ions. 1998 annual progress report

Description: 'The purpose of this research is to develop polymeric extractants for the selective complexation of uranyl ions (and subsequently other actinyl and actinide ions) from aqueous solutions (lakes, streams, waste tanks and body fluids). Selectivity for a specific actinide ion is obtained by providing polymers with cavities lined with complexing ligands so arranged as to match the charge, coordination number, coordination geometry, and size of the actinide metal ion. These cavity-containing polymers… more
Date: June 1, 1998
Creator: Murray, G. M. & Uy, O. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Ocean thermal energy. Quarterly report, January-March 1982

Description: This quarterly report summarizes work of the following tasks as of March 31, 1982: OTEC pilot plant conceptual design review; OTEC methanol; review of electrolyzer development programs and requirements; financial and legal considerations in OTEC implementation; potential Navy sites for GEOTEC systems; hybrid geothermal-OTEC power plants: single-cycle performance estimates; and supervision of testing of pneumatic wave energy conversion system.
Date: 1982-04~
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Geothermal Space Heating--Naval Air Rework Facility, Norfolk, Virginia

Description: The electronic integration hangar, designated LP-167, was selected for study, as it was a single-story building with a large floor area. Because of the high ceiling and the sliding doors necessary to admit aircraft, the heat loss rate, based on floor area, was about twice that of commercial buildings. It was furnished with an oil-fired hot water heating system capable of high thermal output to meet heating requirements in the coldest weather. On the basis of the known characteristics of geother… more
Date: June 10, 1980
Creator: Hill, F. K. & Henderson, R. W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Synthesis and Characterization of Templated Ion Exchange Resins for the Selective Complexation of Actinide Ions

Description: The purpose of this research is to develop a polymeric extractant for the selective complexation of uranyl ions (and subsequently other actinyl and actinide ions) from aqueous solutions (lakes, streams, waste tanks and even body fluids). Chemical insights into what makes a good complexation site will be used to synthesize reagents tailor-made for the complexation of uranyl and other actinide ions. These insights, derived from studies of molecular recognition include ion coordination number and … more
Date: 2001-04~
Creator: Murray, George M.; Uy, O. Manual; Zeng, Xiangfei; Bae, Sue Y.; Bzhelyanskiy, Anton & Kimaro, A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Follow-up investigations of GPHS motion during heat pulse intervals of reentries from gravity-assist trajectories

Description: Motion studies of the General Purpose Heat Source Module, GPHS, which were conducted in the heat pulse intervals associated with entries from earth gravity assist trajectories. The APL six-degree-of-freedom reentry program designated TMAGRA6C was used. The objectives of the studies were to (1) determine whether the GPHS module entering the earth's atmosphere from an earth-gravity-assist trajectory has a preferred orientation during the heat pulse of reentry, (2) determine the effect of magnus f… more
Date: March 23, 1992
Creator: Sharbaugh, R. C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Potential application of Madison formation waters for community heating in South Dakota

Description: It is suggested that the most practical early application of the Madison waters is in community space heating with the local hot waters considered as a municipal commodity. The general design of such a community system is discussed along with its cost, means of financing, and life expectancy. Legal questions and state statutes that are pertinent are cited and the life expectancy of the entire Madison resource and equipment to expoit the resource are considered. (MHR)
Date: September 1978
Creator: Freeman, R.A. & Meier, R.F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Fact sheets relating to use of geothermal energy in the United States

Description: A compilation of data relating to geothermal energy in each of the 50 states is presented. The data are summarized on one page for each state. All summary data sheets use a common format. Following the summary data sheet there are additional data on the geology of each state pertaining to possible hydrothermal/geothermal resources. Also there is a list of some of the reports available pertaining to the state and state energy contacts. The intent of these documents is to present in a concise for… more
Date: December 1980
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Low-cost flywheel demonstration program. Final report

Description: The Applied Physics Laboratory/Department of Energy Low Cost Flywheel Demonstration Program was initiated on 1 October 1977 and was successfully concluded on 31 December 19'9. The total cost of this program was $355,190. All primary objectives were successfully achieved as follows: demonstration of a full-size, 1)kWh flywheel having an estimated cost in large-volume production of approximately $50/kWh; developmeNt of a ball-bearing system having losses comparable to the losses in a totally magn… more
Date: April 1980
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Vacuum deposited polycrystalline silicon films for solar cell applications. Second quarterly technical progress report. January 1-March 31, 1980

Description: A careful study of a specially formed thin silicon layer on TiB/sub 2/-coated sapphire reveals that the interaction layer of TiSi/sub 2/ is composed of larger grains. Processing steps were developed which lead closer to the goal of fabricating polycrystalline silicon photovoltaic devices completely by vacuum deposition. Both n-type and p-type silicon are now being deposited. New deposition masks were made for depositing the n-regions upon the p-layers. New electrode deposition masks were also m… more
Date: May 1980
Creator: Feldman, C.; Arlington, C. H., III; Blum, N. A. & Satkiewicz, F. G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Ocean energy systems. Quarterly report, October-December 1982

Description: Research progress is reported on developing Ocean Thermal Energy Conversion (OTEC) systems that will provide synthetic fuels (e.g., methanol), energy-intensive products such as ammonia (for fertilizers and chemicals), and aluminum. The work also includes assessment and design concepts for hybrid plants, such as geothermal-OTEC (GEOTEC) plants. Another effort that began in the spring of 1982 is a technical advisory role to DOE with respect to their management of the conceptual design activity of… more
Date: 1983-01~
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Vacuum deposited polycrystalline silicon films for solar cell applications. Quarterly report, September 15-December 31, 1979

Description: Polycrystalline silicon films 14-22 ..mu..m thick and with average grain diameters of 20-40 ..mu..m were deposited by vacuum deposition onto both ceramic and sapphire substrates which were previously coated with a thin (1-2 ..mu..m) TiB/sub 2/ conducting layer. The large grains are the result of an interaction in the initial growth stages between silicon and TiB/sub 2/. SIMS studies of B/Ti/Al/sub 2/O/sub 3/, B/Al/sub 2/O/sub 3/, and Ti/Al/sub 2/O/sub 3/, interactions are reported as part of a … more
Date: March 1980
Creator: Feldman, C.; Arrington, C. H.; Blum, N. A. & Satkiewicz, F. G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Ocean energy systems. Quarterly report, January-March 1983

Description: Progress is reported on the development of Ocean Thermal Energy Conversion (OTEC) systems that will provide synthetic fuels (e.g., methanol), energy-intensive products such as ammonia (for fertilizers and chemicals), and aluminum. The work also includes assessment and design concepts for hybrid plants, such as geothermal-OTEC (GEOTEC) plants. Another effort that began in the spring of 1982 is a technical advisory role to DOE with respect to their management of the conceptual and preliminary des… more
Date: 1983-04~
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Geothermal energy development in the Eastern United States. Technical assistance report No. 4. Geothermal space heating: Pittsville Middle/Elementary School, Pittsville, Maryland

Description: A technical evaluation was made to determine whether geothermal energy obtained from a well could be used to space heat the new school building being constructed as well as the existing elementary wing of the Pittsville School. The first part deals with space heating the new school building only; the second part pertains to space heating the new school building together with the new existing wing. An addendum was added for new well and production pump costs. (MHR)
Date: June 1980
Creator: Briesen, R.V. & Yu, K.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Problems of hydroelectric development at existing dams: an analysis of institutional, economic, and environmental restraints in Pennsylvania, New Jersey, and Maryland

Description: The methodology that has been developed to analyze the impact of possible government actions on the development of small-scale hydroelectric power in the United States is described. The application of the methodology to a specific region of the United States is also described. Within the Pennsylvania-New Jersey-Maryland (PJM) region, the methodology has been used to evaluate the significance of some of the existing institutional and economic constraints on hydroelectric development at existing … more
Date: April 1979
Creator: Taylor, R. J. & Green, L. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Eastern Gulf Coastal Plain: a scenario for geothermal energy development

Description: A scenario for the development of potential geothermal resources in the Eastern Gulf Coastal Plain states of Mississippi, Alabama and Florida is explained and discussed. A description of the resources and the nature of the potential applications and energy market in this region are given. A ranking of the resources as to their energy content, potential market, etc., is described, and the assumptions and strategy used to generate the scenario are discussed. A more complete report on the detailed… more
Date: February 1978
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Atlantic Coastal Plain. Geothermal energy and the eastern US: a scenario for geothermal energy development

Description: A brief narrative outline is presented of a scenario for the development of the Atlantic Coastal Plain hydrothermal resources for geothermal space heating and cooling. Listed below are the basic assumptions made in the construction of this scenario. Since this scenario is to serve as a planning document, the steps involved in geothermal development are listed and time-phased. The most critical steps in this process are indicated. This scenario summarizes geothermal development in the entire Atl… more
Date: October 1, 1977
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Energy programs. Quarterly report, January-March 1978

Description: The Johns Hopkins University Applied Physics Laboratory is engaged in the development of energy resources, energy utilization concepts, and energy storage methods. This Quarterly Report, summarizing work completed on the various tasks as of 31 March 1978, contains comments on limited tasks, short descriptions of meetings, trips, presentations, and other limited tasks of note performed in connection with major program tasks and articles that describe these program tasks briefly, summarize the pr… more
Date: 1978-04~
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Evaluation of potential geothermal resource areas

Description: A method for the comparative evaluation of geothermal prospects in the Eastern United States is proposed and illustrated. Comparisons are based on quantified data from geologic, engineering, and socio-economic sources including temperature gradient, depth to basement, drilling costs, population, and distribution by town size, as well as energy use in residential, commercial, and industrial applications.
Date: July 1979
Creator: Mitchell, Franklin O.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Low-cost flywheel demonstration program. Final report, 1 October 1977-31 December 1979

Description: The Applied Physics Laboratory/Department of Energy Low Cost Flywheel Demonstration Program was initiated on 1 October 1977 and was successfully concluded on 31 December 1979. The total cost of this program was $355,190. All primary objectives were successfully achieved as follows: demonstration of a full-size, 1-kWh flywheel having an estimated cost in large-volume production of approximately $50/kWh; development of a ball-bearing system having losses comparable to the losses in a totally magn… more
Date: April 1980
Creator: Rabenhorst, D. W.; Small, T. R. & Wilkinson, W. O.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Environmental assessment of Chalk Point cooling tower drift and vapor emissions

Description: An assessment is provided of selected environmental effects of operating the cooling towers and stacks of Units No. 3 and No. 4 of the Potomac Electric Power Company's generating station at Chalk Point, Maryland. The emphasis is on the magnitude of salt deposition to the area surrounding the cooling tower due to saline water drift. A secondary but important consideration is the magnitude of salt loading due to saline drift from the stack which uses saline river water in scrubbing flue gases. Th… more
Date: March 1979
Creator: Davis, E. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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