Resource Type
Serial/Series Title
NACA Research Memorandums
439
Atomic Energy Commission Reports
388
NACA Technical Notes
327
GJBX
238
United States Department of Energy Grand Junction Office Reports
188
NACA Technical Memorandums
143
United States Geological Survey Reports
126
Argonne National Laboratory Reports
119
Hanford Works Reports
98
NACA Wartime Reports
98
204 More
Country
States
Decade
Month
2,348 Matching Results
Results open in a new window/tab.
Results:
1 - 24 of
2,348
next
The Bernard 120 Seaplane (French): A 1400 hp Single-Seat Monoplane Racer
Circular presenting a description of the Bernard 120, which is a seaplane. Descriptions of the structural elements, engine, and fuel distribution system are provided.
Date:
March 1931
Creator:
Léglise, Pierre
Object Type:
Report
System:
The UNT Digital Library
The Dyle and Bacalan "DB 70" Commercial Airplane (French): An All-Metal High-Wing Monoplane
Report presenting a description of the Dyle and Balaclan DB 70, which is a commercial airplane with a very thick wing. Details of the fuselages, wings, passenger and pilot spaces, ability to function as an ambulance airplane, and flying qualities are provided.
Date:
March 1930
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
The Latécoère 521 "Lieutenant De Vaisseau Paris" Commercial Flying Boat (French): A Two-Deck Six-Engine Semicantilever Sesquiplane
Circular presenting a description of the Latécoère 521, which was the largest aircraft built in France at the time. A more detailed description of the wings, hull, accommodation for passengers and officers, fuel system, controls, and flight characteristics is provided.
Date:
March 1936
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
PTOLEMY, a Program for Heavy-Ion Direction-Reaction Calculations
Ptolemy is an IBM/360 program for the computation of nuclear elastic and direct-reaction cross sections. It carries out both optical-model fits to elastic-scattering data at one or more energies, and DWBA calculations for nucleon-transfer reactions. Ptolemy has been specifically designed for heavy-ion calculations. It is fast and does not require large amounts of core. The input is exceptionally flexible and easy to use. This report outlines the types of calculation that Ptolemy can carry out, summarizes the formulas used, and gives a detailed description of its input.
Date:
March 1976
Creator:
Gloeckner, D. H.; Macfarlane, M. H. & Pieper, Steven C.
Object Type:
Report
System:
The UNT Digital Library
Computer-Code Formulation for Three-Dimensional HEXCAN Response Coupled with Internal Hydrodynamics
A procedure is described for the dynamic analysis of a fast-reactor hexagonal subassembly. The internals of the fuel subassembly are treated by an axisymmetric hydrodynamic code REXCO-HT which, among other properties, possesses a model of an MFCI pressure source. The housing of the fuel subassembly is handled by the SADCAT code, which is based on a triangular finite element in three-dimensional space. The code is used to illustrate the discrepancies involved if the hexcan is modeled by a cylinder of the same thickness. A study is also made of the reduction of cylinder thickness such that the same final cylindrical deformation can be predicted. A discussion in arriving at such an equivalence is offered.
Date:
March 1976
Creator:
Marchertas, A. H. & Julke, R. T.
Object Type:
Report
System:
The UNT Digital Library
Study on Flow Instabilities in Two-Phase Mixtures
Various mechanisms that can induce flow instabilities in two-phase flow systems are reviewed and their relative importance discussed. In view of their practical importance, the density-wave instabilities have been analyzed in detail based on the one-dimensional two-phase flow formulation. The dynamic response of the system to the inlet flow perturbations has been derived from the model; thus the characteristic equation that predicts the onset of instabilities has been obtained. The effects of various system parameters, such as the heat flux, sub-cooling, pressure, inlet velocity, inlet orificing, and exit orificing on the stability boundary have been analyzed. In addition to numerical solutions, some simple stability criteria under particular conditions have been obtained. Both results have been compared with various experimental data, and a satisfactory agreement has been demonstrated.
Date:
March 1976
Creator:
Ishii, M.
Object Type:
Report
System:
The UNT Digital Library
Explosive Interaction of Molten UO2 and Liquid Sodium
The interim report presented describes a continuation of the work reported in ANL-7890, Interaction of Sodium with Molten Uranium dioxide and Stainless Steel Using a Dropping Mode of Contact. In the current study, sodium was injected into a pool of molten uranium dioxide. The experiment consistently produced vapor explosions, both with the injection nozzle above and beneath the surface of the uranium dioxide. Although the efficiency of the conversion of thermal to mechanical energy was small (due in part to very conservative data analysis and an inefficient geometry), the results did demonstrate that there is no intrinsic reason why reactor materials cannot produce a vapor explosion.
Date:
March 1976
Creator:
Armstrong, D. R.; Goldfuss, G. T. & Gebner, R. H.
Object Type:
Report
System:
The UNT Digital Library
Xenon-Tagging in Production of EBR-II Mark II Driven-Fuel Elements
About 1200 Mark II driver-fuel elements were xenon-tagged to facilitate qualification for irradiation of Mark II fuel manufactured at ANL-West. Tagging equipment was designed and developed. In this equipment, the plenum in a fuel-element jacket was evacuated then filled with xenon to a predetermined pressure. The equipment design allows tagging and element fabrication to proceed normal rates for production of fuel elements. A Kr-85 tracer in the xenon-tag gas verified by gamma counting the adequate tagging of each element.
Date:
March 1976
Creator:
Wilkes, C. W.; Ryan, M. J.; Laug, M. T. & Fryer, R. M.
Object Type:
Report
System:
The UNT Digital Library
Environmental Monitoring at Argonne National Laboratory, Annual Report: 1975
Annual report of the environmental monitoring program at Argonne National Laboratory, discussing activities and findings of the group.
Date:
March 1976
Creator:
Golchert, N. W.; Duffy, T. L. & Sedlet, J.
Object Type:
Report
System:
The UNT Digital Library
Plutonium Safety Training Course
This course seeks to achieve two objectives: to provide initial safety training for people just beginning work with plutonium, and to serve as a review and reference source for those already engaged in such work. Numerous references have been included to provide information sources for those wishing to pursue certain topics more fully. The first part of the course content deals with the general safety approach used in dealing with hazardous materials. Following is a discussion of the four properties of plutonium that lead to potential hazards: radioactivity, toxicity, nuclear properties, and spontaneous ignition. Next, the various hazards arising from these properties are treated. The relative hazards of both internal and external radiation sources are discussed, as well as the specific hazards when plutonium is the source. Similarly, the general hazards involved in a criticality, fire, or explosion are treated. Comments are made concerning the specific hazards when plutonium is involved. A brief summary comparison between the hazards of the trans-plutonium nuclides relative to plutonium-239 follows. The final portion deals with control procedures with respect to contamination, internal and external exposure, nuclear safety, and fire protection. The philosophy and approach to emergency planning are also discussed.
Date:
March 1976
Creator:
Moe, H. J.
Object Type:
Report
System:
The UNT Digital Library
Final Safety Analysis Addenda to Hazards Summary Report, Experimental Breeder Reactor II (EBR-II) : Upgrading of Plant Protection System, Volume 1
This report is a compilation of the formal Final Safety Analysis Addenda (FSAA's) to the EBR-II Hazard Summary Report and Addendum that have been prepared in support of certain modifications to the reactor-shutdown-system portion of the EBR-II plant protection system. Each major section is an edited version of the original FSAA for a particular modification and provides a description of the pre - and post -modification system, the rationale for the modification, and required supporting safety analysis.
Date:
March 1976
Creator:
Sackett, J. I. & Gale, N. L.
Object Type:
Report
System:
The UNT Digital Library
One-Dimensional Cladding-Relocation Model for Fast-Reactor Loss-of-Flow Accidents
The motion and location of the molten-cladding during an unprotected loss-of-flow accident in liquid metal fast breeder reactors are important because of the effects on the reactivity and the subsequent fuel motion. The present study analyzes the cladding-relocation problem based on a single-channel film-flow model and a simple thermal transient model for fuel pins. The motion of molten cladding induced by sodium-vapor streaming undergoes initial rapid upward acceleration, slowing down, flow reversal, and eventual slumping down into liquid sodium at the lower end of the heated section. Freezing of the molten cladding at the unheated upper plenum region is possible; bottom freezing and blockage formation were also included in the analysis. A simple calculation has been made for the R-series seven-pin tests in the TREAT reactor. The agreement of the overall physical behavior of the cladding motion with the post-test observations is quite satisfactory.
Date:
March 1976
Creator:
Ishii, M.; Chen, W. L. & Grolmes, M. A.
Object Type:
Report
System:
The UNT Digital Library
Experimental and Analytical Study of the Sputtering Phenomena
An experimental apparatus was constructed to examine the heat-transfer characteristics of a sputtering front. In the present study, a heat source of sufficient intensity was located immediately below the sputtering front, which prevented its downward progress, thus permitting detailed measurements of steady-state surface temperatures throughout a sputtering front. A two-dimensional analytical model was developed to describe a stationary sputtering front where the wet-dry interface corresponds to a CHF phenomena and the dry zone is adiabatic. This model is nonlinear because of the temperature dependence of the heat-transfer coefficient in the wetted region and has yielded good agreement with data. A simplified one-dimensional approximation was developed which adequately describes these data. Finally, by means of a coordinate transformation and additional simplifying assumptions, this analysis was extended to analyze moving sputtering fronts, and reasonably good agreement with reported data was shown.
Date:
March 1976
Creator:
Howard, Paul A.
Object Type:
Report
System:
The UNT Digital Library
Comparison of the AMDAHL 470V/6 and the IBM 370/195 Using Benchmarks
Six groups of jobs were run on the IBM 370/195 at the Applied Mathematics Division (AMD) of Argonne National Laboratory using the current production versions of OS/MVT 21.7 and ASP 3.1. The same jobs were then run on an AMDAHL 470V/6 at the AMDAHL manufacturing facilities in Sunnyvale, California, using the identical operating systems. Performances of the two machines are compared. Differences in the configurations were minimized. The memory size on each machine was the same, all software which had an impact on run times was the same, and the I/O configurations were as similar as possible. This allowed the comparison to be based on the relative performance of the two CPU's. As part of the studies preliminary to the acquisition of the IBM 195 in 1972, two of the groups of jobs had been run on a CDC 7600 by CDC personnel in Arden Hills, Minnesota, on an IBM 360/195 by IBM personnel in Poughkeepsie, New York, and on the AMD 360/50/75 production system in June, 1971.
Date:
March 1976
Creator:
Snider, D. R.; Midlock, J. L.; Hinds, A. R. & Engert, D. E.
Object Type:
Report
System:
The UNT Digital Library
Considerations Affecting Deep-Well Disposal of Tritium-Bearing Low-Level Aqueous Waste from Nuclear Fuel Reprocessing Plants
Present concepts of disposal of low-level aqueous wastes (LLAW) that contain much of the fission-product tritium from light water reactors involve dispersal to the atmosphere or to surface streams at fuel reprocessing plants. These concepts have been challenged in recent years. Deep-well injection of low-level aqueous wastes, an alternative to biospheric dispersal, is the subject of this presentation. Many factors must be considered in assessing its feasibility, including technology, costs, environmental impact, legal and regulatory constraints, and siting. Examination of these factors indicates that the technology of deep-well injection, extensively developed for other industrial wastes, would require little innovation before application to low-level aqueous wastes. Costs would be low, of the order of magnitude of 10⁻⁴ mill/kWh. The environmental impact of normal deep-well disposal would be small, compared with dispersal to the atmosphere or to surface streams; abnormal operation would not be expected to produce catastrophic results. Geologically suitable sites are abundant in the U.S., but a well would best be co-located with the fuel-reprocessing plant where the LLAW is produced. Legal and regulatory constraints now being developed will be the most important determinants of the feasibility of applying the method.
Date:
March 1977
Creator:
Trevorrow, L. E.; Warner, D. L. & Steindler, M. J.
Object Type:
Report
System:
The UNT Digital Library
Environmental Monitoring at Argonne National Laboratory, Annual Report: 1984
Annual report of the environmental monitoring program at Argonne National Laboratory, discussing activities and findings of the group.
Date:
March 1985
Creator:
Golchert, N. W.; Duffy, T. L. & Sedlet, J.
Object Type:
Report
System:
The UNT Digital Library
Johnson Controls Inc. Battery Division Annual Report, 1985: Research, Development and Demonstration of Lead-Acid Batteries for Electric Vehicle Propulsion
Report on research and development of the lead-acid battery for electric vehicle propulsion, focusing on continuing development on the forced electrolyte flow-through concept with some work on the composite, plastic/lead grid.
Date:
March 1986
Creator:
Johnson Controls, Inc. Globe Battery Division.
Object Type:
Report
System:
The UNT Digital Library
1985 Annual Site Environmental Report for Argonne National Laboratory
Report on the environmental impact of Argonne National Laboratory.
Date:
March 1986
Creator:
Golchert, N. W.; Duffy, T. L. & Sedlet, J.
Object Type:
Report
System:
The UNT Digital Library
Leakage Flow-Induced Vibration of an Unconstricted Tube-in-Tube Slip Joint
The conditions are given for which the more flexible of two cantilevered, telescoping tubes conveying fluid can be self-excited by flow leaking from an un-constricted slip joint. Also, a physical explanation of the excitation mechanism is discussed, and a design rule to avoid the mechanism is presented. In addition, the results for the un-constricted slip joint are shown to be similar to those for slip joints having annulus constrictions at very short engagement lengths.
Date:
March 1986
Creator:
Mulcahy, T. M.
Object Type:
Report
System:
The UNT Digital Library
Richard-Penhoet Commercial Seaplane
This is a multi-engine monoplane with a central hull and without external bracing. The trim of the seaplane on the water is assured by two wing floats, one on each side of the hull 9 m. from its axis. It has a total power of 2100 HP. from 5 air cooled Jupiter radial engines.
Date:
March 1927
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Vojenska-Smolik S.16 Airplane: All-Metal Long-Distance Observation Bi-Plane
Circular presenting a description of the Vojenska-Smolik all-metal two-seater airplane. The design and flight characteristics are described and blueprints and photographs of the aircraft are provided.
Date:
March 1927
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Ultraviolet spectrochemical analysis for aromatics in aircraft fuels
Report presenting tests to verify and extend ultraviolet spectroscopic techniques for applications to the analysis of aviation fuels for their aromatic constituents. Results regarding photographic absorption spectra, spectrophotometric absorption spectra, and spectrophotometric analyses are provided.
Date:
March 1945
Creator:
Cleaves, Alden P.
Object Type:
Report
System:
The UNT Digital Library
The Boundary Layer as a Means of Controlling the Flow of Liquids and Gases
According to one of the main propositions of the boundary layer theory the scarcely noticeable boundary layer may, under certain conditions, have a decisive influence on the form of the external flow by causing it to separate from the wing surface. These phenomena are known to be caused by a kind of stagnation of the boundary layer at the point of separation. The present report deals with similar phenomena. It is important to note that usually the cause (external interference) directly affects only the layer close to the wall, while its indirect effect extends to a large portion of the external flow.
Date:
March 1930
Creator:
Schrenk, Oskar
Object Type:
Report
System:
The UNT Digital Library
The Short "Calcutta": First British All-Metal Commercial Seaplane
The Calcutta is a large seaplane, with seating for 16 and a payload of 3,400 pounds. A description of the design, construction features, engine installation, specifications, performance, and photographs are provided.
Date:
March 1928
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library