Resource Type

Coal Project: Background Information (Planning and Management) (open access)

Coal Project: Background Information (Planning and Management)

From foreword: "This report presents summary information on coal development in the United States, and material on the potential interactions of that development with fish and wildlife resources."
Date: July 14, 1976
Creator: Coal Project (U.S.)
Object Type: Report
System: The UNT Digital Library
Coal Project: Five Year Framework (FY 1976 Through FY 1980) (open access)

Coal Project: Five Year Framework (FY 1976 Through FY 1980)

This document presents the total scope of the framework for the U.S. Coal Project during fiscal years 1976 through 1980. The project was initiated to provide information for appropriate involvement of the Fish and Wildlife Service in U.S. coal development actions.
Date: July 14, 1976
Creator: Coal Project (U.S.)
Object Type: Book
System: The UNT Digital Library
Integrated Radiological Instrumentation System Planning (open access)

Integrated Radiological Instrumentation System Planning

In recognition of the need for an integrated system plan for future development requirements for radiological instrumentation, this information report was written to provide the initial step concerning such a planning. The report is to be considered a basic information analysis of the present in-use plant radiological instrumentation, of the instrumentation now undergoing active development, and of the future development work contemplated.
Date: July 14, 1960
Creator: Spear, W. G.
Object Type: Report
System: The UNT Digital Library
Liquid Metal Fuel Reactor: Four-Inch Utility Test Loop: Design, Construction, Operation, and Experimental Results (open access)

Liquid Metal Fuel Reactor: Four-Inch Utility Test Loop: Design, Construction, Operation, and Experimental Results

Report issued by the Brookhaven National Laboratory discussing fuel reactor test loops. The "design, construction, operation, and experimental results" (p. 1) are presented. This report includes tables, illustrations, and photographs.
Date: July 14, 1960
Creator: Hoffman, K. C.; Isler, R. J.; Scarlett, C. H. & Schoener, G. A.
Object Type: Report
System: The UNT Digital Library
Eurochemic Assistance Program: Comments by FMPC, dated July 6, 1959, on Eurochemic Technical Documents (open access)

Eurochemic Assistance Program: Comments by FMPC, dated July 6, 1959, on Eurochemic Technical Documents

The nuclear safety portion of this report is inclined to ignore the factors by which safety limits can be increased. It makes no mention of the control that can be exercised by limiting the assay of the U-235 being processed in the plant. From some of the previous reports, it is apparent that this plant is not anticipating processing U-235 of assay greater than approximately 20%. At this value, many of the numbers that are presented in the tables could be increased markedly. Rough examination indicates that these values all refer to top product U-235. The general discussion is, however, excellent. The references apparently used are those unclassified references with which we are all familiar and think highly of. We would recommend the inclusion of TID-7016.
Date: July 14, 1959
Creator: Cuthbert, F. L.
Object Type: Report
System: The UNT Digital Library
Effects of Boattail Area Contouring and Simulated Turbojet Exhaust on the Loading and Fuselage-Tail Component Drag of a Twin-Engine Fighter-Type Airplane Model (open access)

Effects of Boattail Area Contouring and Simulated Turbojet Exhaust on the Loading and Fuselage-Tail Component Drag of a Twin-Engine Fighter-Type Airplane Model

Effects of boattail area contouring and simulated turbojet exhaust on loading and fuselage-tail component drag of twin-engine fighter-type airplane model.
Date: July 14, 1958
Creator: Foss, Willard E., Jr.; Runckel, Jack F. & Lee, Edwin E., Jr.
Object Type: Report
System: The UNT Digital Library
Effects of Boattail Area Contouring and Simulated Turbojet Exhaust on the Loading and Fuselage-Tail Component Drag of a Twin-Engine Fighter-Type Airplane Model (open access)

Effects of Boattail Area Contouring and Simulated Turbojet Exhaust on the Loading and Fuselage-Tail Component Drag of a Twin-Engine Fighter-Type Airplane Model

"An investigation of a twin-engine fighter-type airplane model has been conducted in the Langley 16-foot transonic tunnel to determine the effect on drag of a fuselage volume addition incorporating streamline contouring and more extensive boattailing of the engine shrouds. The effect of hot exhausts from the turbojet engines was simulated with hydrogen peroxide gas generators using scaled nonafterburning engine nozzles. Afterbody pressure distributions, base drag coefficients, and forces on the fuselage-tail configurations are presented at Mach numbers from 0.80 to 1.05 angles of attack of 0 degree and 4 degrees for jet pressure ratios from 1 to 7" (p. 1).
Date: July 14, 1958
Creator: Foss, Willard E., Jr.; Runckel, Jack F. & Lee, Edwin E., Jr.
Object Type: Report
System: The UNT Digital Library
Hydrodynamic Characteristics of a Model of a Proposed Six-Engine Hull-Type Seaplane Designed for Supersonic Flight (open access)

Hydrodynamic Characteristics of a Model of a Proposed Six-Engine Hull-Type Seaplane Designed for Supersonic Flight

Memorandum presenting an investigation of the hydrodynamic characteristics of a six-engine hull-type seaplane designed for supersonic flight. The configuration had four engines mounted on top of the wing in individual nacelles and two engines mounted on top of the aft section of the hull with their inlets located on top of the wing.
Date: July 14, 1958
Creator: Coffee, Claude W., Jr.
Object Type: Report
System: The UNT Digital Library
Hydrodynamic Characteristics of a Model of a Proposed Six-Engine Hull-Type Seaplane Designed for Supersonic Flight (open access)

Hydrodynamic Characteristics of a Model of a Proposed Six-Engine Hull-Type Seaplane Designed for Supersonic Flight

Report presenting an investigation of the hydrodynamic characteristics of a six-engine hull-type seaplane designed for supersonic flight. Four engines were mounted on top of the wing in individual nacelles and two engines were mounted on the top of the aft section of the hull. Results regarding the acceleration, gross-load-total-resistance ratio, stabilizer deflections, and reaction of the inlets to water are presented.
Date: July 14, 1958
Creator: Coffee, Claude W., Jr.
Object Type: Report
System: The UNT Digital Library
Investigation of Control Effectiveness and Stability Characteristics of a Model of a Low-Wing Missile With Interdigitated Tail Surfaces at Mach Numbers of 2.29, 2.97, and 3.51 (open access)

Investigation of Control Effectiveness and Stability Characteristics of a Model of a Low-Wing Missile With Interdigitated Tail Surfaces at Mach Numbers of 2.29, 2.97, and 3.51

"A brief investigation of the longitudinal stability and control effectiveness at supersonic speeds of a model of a low-wing missile with interdigitated tail surfaces was made in the Langley Unitary Plan wind tunnel. The data were obtained at Mach numbers M of 2.29, 2.97, and 3.51 for Reynolds number (based on the mean geometric chord of the wing) of 1.15 x 10(exp 6), 1.14 x 10(exp 6), and 1.11 x 10(exp 6), respectively. Data were obtained for three settings of the longitudinal control surfaces: with deflection of all surfaces, with deflection of the lower surfaces only, and with all surfaces undeflected" (p. 1).
Date: July 14, 1958
Creator: Presnell, John G., Jr.
Object Type: Report
System: The UNT Digital Library
Properties of Arc-Melted Chromium-Base Alloys (open access)

Properties of Arc-Melted Chromium-Base Alloys

From abstract: "Twelve binary chromium-base alloy systems were screened for hot workability, oxidation resistance, and hot strength using small ore-melted ingots...Experiments with the preparation of large chromium-base alloy ingots showed that cold-mold ore melting was not suitable for preparing ingots containing over about 1 w/o of alloy addition."
Date: July 14, 1958
Creator: Maykuth, Daniel J.; Roberts, John W., Jr. & Jaffee, Robert Isaac, 1917-
Object Type: Report
System: The UNT Digital Library
Determination of Plutonium and Uranium in Scrup Dissolver Solutions (open access)

Determination of Plutonium and Uranium in Scrup Dissolver Solutions

Methods for the determination of plutonium and uranium in highly radioactive scrup dissolver solutions have been developed. Plutonium was separated from the dissolver solutions by solvent-extraction and ion-exchange techniques and determined by potentiometric titration. Uranium was separated by ion exchange and determined by potentiometric titration. Solutions that were similar to the actual dissolver solutions and that contained known amounts of plutonium and uranium were analyzed by these methods. Evaluation of the data secured for the determination of plutonium and uranium by the methods given herein indicated that, within the limits of the precision of the methods, there was no bias. The precision of the data obtained for the determination of plutonium, expressed as the relative standard deviation, was better than 2% for plutonium in the concentration range of 0.27 to 0.64 mg/ml. The precision for uranium was estimated to be about 0.2% for uranium concentrations of 425 mg/ml. These methods and the data obtained by then are discussed in this report; the procedures are appended.
Date: July 14, 1955
Creator: Foster, R. W.; Cooper, J. H. & Raaen, H. P.
Object Type: Report
System: The UNT Digital Library
Homogenous Reactor Project Quarterly Progress Report For Period Ending April 30, 1955 (open access)

Homogenous Reactor Project Quarterly Progress Report For Period Ending April 30, 1955

Part I. Experimental Reactors: The effect of prompt-neutron lifetime upon reactor safety was investigated for the HRT. It was found that for a given pressure rise the allowable rate of reactivity addition was relatively insensitive to the average prompt-neutron lifetime, although the rate de creased somewhat with decreasing lifetime for the higher pressure rises. With only source neutrons present and the reactor initially subcritical, the allowable rate was practically independent of the initial value of k£. For a core-pressure rise of 400 psi, the corresponding rate of reactivity addition was about 0.8% per second; for a pressure rise of 4000 psi, the rate was 2.5 to 3.0% per second. Part II. Thorium Breeder Reactor: An economic study of one-region thorium breeder reactors was completed. Where possible, the process characteristics and cost factors were the same as those used previously in studies of two-region-type reactors. The mini mum-cost reactor is about 12 ft in diameter, operating with 260 g of thorium per liter on a chemical processing cycle of about 450 days. The ratio of U232 to U233 produced is approximately 2 x 10~4 VIM in the minimum-cost one-region system, compared with 4 x 10 5 in the two-region system. The …
Date: July 14, 1955
Creator: McDuffie, H. F. & Kelly, D. C.
Object Type: Report
System: The UNT Digital Library
Corrosion of Type 347 Stainless Steel in the Uranium-Derby Pickle Bath (open access)

Corrosion of Type 347 Stainless Steel in the Uranium-Derby Pickle Bath

Abstract: In one of the final stages of the process at the Mallinckrodt Uranium Refining Center, a 45 per cent nitric acid solution at about 170 F is used to pickle the calcined magnesium fluoride scale off the uranium derbies. The increase in the fluoride-ion content of the bath tends to promote corrosion of the Type 347 stainless tanks. This attack becomes excessive if 0.3 g/liter of fluoride ion or more is present. It was found that if aluminum ion is added to the solution the corrosiveness of the bath can be controlled. Two or three times as much aluminum ion as fluoride ion present is found satisfactory at 170 F. Indications are that the tying up of the fluoride-ion by the complexion [AlF6]8 is responsible for the corrosion control.
Date: July 14, 1954
Creator: Peoples, R. S.; Fink, F. W.; Stewart, O. M. & Braun, W. J.
Object Type: Report
System: The UNT Digital Library
Longitudinal Control Characteristics of a 1/20-Scale Model of the Convair F-102 Airplane at Transonic Speeds (open access)

Longitudinal Control Characteristics of a 1/20-Scale Model of the Convair F-102 Airplane at Transonic Speeds

"The effects of elevator deflections from 0 degrees to -20 degrees on the force and moment characteristics of a 1/20-scale model of the Convair F-102 airplane with chordwise fences have been determined at Mach numbers from 0.6 to 1.1 for angles of attack up to 20 degrees in the Langley 8-foot transonic tunnel. The configuration exhibited static longitudinal stability throughout the range tested, although a mild pitch-up tendency was indicated at Mach numbers from 0.85 to 0.95. Elevator pitch effectiveness decreased rapidly between the Mach numbers of 0.9 and 1.0, however, no complete loss or reversal was indicated for all conditions tested" (p. 1).
Date: July 14, 1954
Creator: Osborne, Robert S. & Tempelmeyer, Kenneth E.
Object Type: Report
System: The UNT Digital Library
Surface Studies of Irradiated Graphite (open access)

Surface Studies of Irradiated Graphite

The effects of oxidation and irradiation on the microsurface structure of pile graphite have been investigated by measuring the surface area and pore size distribution of several samples. The results obtained for both oxidized and irradiated graphite samples indicate that changes in surface characteristics which occur are determined by the flux, temperature of irradiation, and gaseous atmosphere in which the radiation takes place.
Date: July 14, 1953
Creator: Spalaris, C. N.
Object Type: Report
System: The UNT Digital Library
Considerations on the Effect of Beam-Dee Coupling in a Cyclotron RF System (open access)

Considerations on the Effect of Beam-Dee Coupling in a Cyclotron RF System

Analysis of the problem of accelerating ions in a Thomas cyclotron has been confined almost entirely to the integration of various equations of motion (for single particles) for which a complete field description is necessary. In contrast, the problem of principal interest to rf system engineers concerns the gross transfer of electrical energy from an rf generator into an accelerated beam.
Date: July 14, 1952
Creator: Wouters, L. F. (Louis Francis), 1921-
Object Type: Report
System: The UNT Digital Library
The Crystal Structures of NpC and Pu₂O₃ (open access)

The Crystal Structures of NpC and Pu₂O₃

The following report describes the crystal structures of NpC and Pu2O3 identified by x-ray diffraction.
Date: July 14, 1952
Creator: Templeton, D. H. & Dauben, Carol H.
Object Type: Report
System: The UNT Digital Library
The Effect of Gaps on Pile Reactivity (open access)

The Effect of Gaps on Pile Reactivity

From abstract: "The variation of the reactivity of a pile as a function of width of a transverse gap is obtained. The method involves first finding the boundary condition satisfied by the flux at the gap face. This, in principle, provides enough information for a complete solution of the pile equations. A method for calculating the reactivity change is presented. The calculated reactivity is compared with experiment and a brief discussion of the validity of the approximations is given."
Date: July 14, 1952
Creator: Tamor, S. & Ergen, W. K.
Object Type: Report
System: The UNT Digital Library
Homogeneous Reactor Project Quarterly Progress Report: March 1952 (open access)

Homogeneous Reactor Project Quarterly Progress Report: March 1952

This quarterly progress report details the ongoing research happening at the Oak Ridge National Laboratory. In particular, this report discusses the current status of the Homogenous Reactor Experiment, boiling reactor and slurry studies, and general homogenous reactor studies.
Date: July 14, 1952
Creator: Swartout, J. A.; Secoy, C. H.; Welton, T. A.; Winters, C. E. & Thompson, W. E.
Object Type: Report
System: The UNT Digital Library
Low-Speed Wind-Tunnel Investigation of the Effects of Propeller Operation at High Thrust on the Longitudinal Stability and Trim of a Twin-Engine Airplane Configuration (open access)

Low-Speed Wind-Tunnel Investigation of the Effects of Propeller Operation at High Thrust on the Longitudinal Stability and Trim of a Twin-Engine Airplane Configuration

Report presenting an investigation to determine the effects of dual-rotation propeller operation at high thrust on the static longitudinal stability characteristics of a semispan powered model representing a twin-engine airplane configuration with flaps retracted. Stability and trim changes associated with an extreme constant power conditions were greatly dependent on tail height and vertical location of the center of gravity. Results regarding basic data, effects of power on overall stability and trim, and tuft-grid flow surveys are provided.
Date: July 14, 1952
Creator: Sleeman, William C., Jr. & Linsley, Edward L.
Object Type: Report
System: The UNT Digital Library
Wind-Tunnel Investigation of a 0.6-Scale Model of Hughes MX-904 Tail Surface at Supersonic Speeds: Several Combinations of the Tail With Each of Two Foreshortened Body Segments (open access)

Wind-Tunnel Investigation of a 0.6-Scale Model of Hughes MX-904 Tail Surface at Supersonic Speeds: Several Combinations of the Tail With Each of Two Foreshortened Body Segments

"An investigation has been made in the Langley 9- by 12-inch super-sonic blowdown tunnel at Mach numbers of 1.62 and 1.96 of a partial-span body with one tail surface, designed for use on the Hughes Falcon (MX-904) missile. The present paper extends the work reported in NACA-RM-SL50E10. Force and moment data including elevator hinge moment were obtained for the conditions of the tail in the presence of a small segment of the fore-shortened body, in the presence of a semi-span body and attached to a semi-span body, and for the condition of the foreshortened semi-span body alone" (p. 1).
Date: July 14, 1950
Creator: Guy, Lawrence D. & Conner, D. William
Object Type: Report
System: The UNT Digital Library
Preliminary Investigation to Determine Propeller Section Characteristics by Measuring the Pressure Distribution on an NACA 10-(3)(08)-03 Propeller Under Operating Conditions (open access)

Preliminary Investigation to Determine Propeller Section Characteristics by Measuring the Pressure Distribution on an NACA 10-(3)(08)-03 Propeller Under Operating Conditions

"An investigation has been made in the Langley 16-foot high-speed tunnel to determine the propeller-section characteristics by measuring the pressure distribution on the airfoil sections of a rotating propeller. The pressures were measured at nine radial stations on an NACA 10-(3)(08)-03 design two-blade propeller. This paper presents the results of the pressure measurements in the form of normal-force and moment coefficients and covers a range of nominal angle of attack (simple blade element theory) from 0 degrees to 4 degrees for a section Mach number range of approximately 0.6 to 1.15 for the outboard stations and approximately 0.3 to 0.6 for inboard stations" (p. 1).
Date: July 14, 1948
Creator: Evans, Albert J. & Liner, George
Object Type: Report
System: The UNT Digital Library
Metallurgical Laboratory, Chemical Research - Radiation Chemistry, Report for the Month Ending June 30, 1944 (open access)

Metallurgical Laboratory, Chemical Research - Radiation Chemistry, Report for the Month Ending June 30, 1944

Technical report with short reports on (1) P-9 recovery from UO2F2 solution; (2) Correlation of theories on action of radiation on matter; (3) Literature surveys on organic compounds and on chemistry of UO2F2; (4) effect of radiation on organic compounds; and (5) Effect of radiation on 100 area construction materials.
Date: July 14, 1944
Creator: Hogness, T. R. (Thorfin Rusten), 1894- & Burton, Milton, 1902-
Object Type: Report
System: The UNT Digital Library