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Gas Injection into the McClosky Limestone in the Griffin and New Harmony Oil Fields, Indiana and Illinois

Description: Report issued by the U.S. Bureau of Mines conducted a study on the injection of gas into the McClosky limestone in northern Illinois and Indiana. The resulting increases in oil and gas production from this area are presented. The report includes maps, graphs, tables, and illustrations.
Date: July 1945
Creator: Riggs, C. H.
Partner: UNT Libraries Government Documents Department
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Magnetic Survey of the Florida Peninsula

Description: Report issued by the U.S. Bureau of Mines over magnetic surveys conducted on the Florida peninsula. Measurements, methods, and instrumentation used for the survey are presented. Tables and maps are included in this report.
Date: May 1945
Creator: Lee, Frederick William; Swartz, J. H. & Hemberger, S. J.
Partner: UNT Libraries Government Documents Department
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Magnetometer Surveys on Black Sands of the Oregon Coast

Description: Report issued by the U.S. Bureau of Mines on the magnetometer surveys conducted on the coastal region of Oregon. The methods, geology, and locations surveyed are presented. This report includes maps, graphs, and illustrations.
Date: June 1945
Creator: Stephenson, Edgar Lee
Partner: UNT Libraries Government Documents Department
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United States Earthquakes, 1945

Description: Report discussing earthquake activity in the United States during 1945. The report is broken down by regions and has sections for specific earthquakes.
Date: 1945
Partner: UNT Libraries Government Documents Department
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Utilization of Three Kids Manganese Ore in the Production of Electrolytic Manganese

Description: Report issued by the U.S. Bureau of Mines regarding specific manganese ore from Nevada and its use in electrolytic production. The development processes and methods are presented. This report includes tables, maps, illustrations, and photographs.
Date: June 1945
Creator: Allen, Glenn L.; Jacobs, J. H.; Hunter, J. W. & Sillers, F., Jr.
Partner: UNT Libraries Government Documents Department
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Net Heat of Combustion of AN-F-28 Aviation Gasolines

Description: "Experimental data on the heats of combustion and hydrogen contents of a number of aviation gasolines have been used in deriving a formula for computing net heat of combustion from (measured) gross heat of combustion. This formula appears to be sufficiently reliable for the purpose and has the advantage of making hydrogen determinations unnecessary. The data on heats of combustion are presented in tabular form, and in graphs showing the relation between net heat of combustion and (1) hydrogen content, (2) aniline point, (3) APO gravity, and (4) the product of aniline point and APO gravity" (p. 1).
Date: June 1945
Creator: Jessup, R. S. & Cragoe, C. S.
Partner: UNT Libraries Government Documents Department
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Bonding Strengths of Adhesives at Normal and Low Temperatures

Description: Note presenting a determination of the bonding strengths of two thermosetting adhesives, liquid Cycleweld C-3 and Ardux 1, to several aircraft materials using shear tests made on lap-joint specimens. The specimens were tested at 25 degrees Celsius and at subfreezing temperatures of approximately -40 degrees Celsius. Results regarding the specimens bonded under clamping pressure, specimens bonded after various surface treatments, specimens of metal bonded to plywood, and specimens of aluminum bonded to magnesium are provided.
Date: January 1945
Creator: Axilrod, B. M. & Jirauch, D. H.
Partner: UNT Libraries Government Documents Department
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Survey of Adhesives and Adhesion

Description: Report presenting an investigation regarding the strengths of bonds between different chemical types of adhesives and adherends. Some of the topics explored include the theoretical aspects of adhesion and properties of adhesively bonded structures.
Date: August 1945
Creator: Rinker, R. C. & Kline, G. M.
Partner: UNT Libraries Government Documents Department
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The inward bulge type buckling of monocoque cylinders 3: revised theory which considers the shear strain energy

Description: Report presenting the third part of an investigation dealing with the inward bulge type buckling of monocoque cylinders the theory of buckling in pure bending, which is refined through the consideration of the shear strain energy stored in the sheet covering, the assumption of a revised deflected shape of the rings, and the use of summations in place of some of the integrations of the preceding report.
Date: April 1945
Creator: Hoff, N. J. & Klein, Bertram
Partner: UNT Libraries Government Documents Department
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NACA Investigation of Fuels Corresponding to Specification an-F-58 : Results of Studies in Single Combustors of J-33, J-34, J-35, and Nene Turbojet Engines

Description: "The NACA is engaged in a program to evaluate the performance of fuels conforming to AN-F-58 specification in both full-scale engines and single combustors. This research memorandum constitutes an interim report on the results obtained on single cosibustors" (p. 1).
Date: November 16, 1945
Creator: Cleveland Laboratory Staff
Partner: UNT Libraries Government Documents Department
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Performance tests of wire strain gages 2: calibration factors in compression

Description: Report presenting the results of calibrations in axial compression over the strain range 0 to 0.0021 for 15 types of single element multistrand wire strain gages. The majority of gages showed significant differences between the calibration factors for strain increasing and strain decreasing. The majority of the gages were found to have slightly lower factors in compression than in tension.
Date: September 1945
Creator: Campbell, William R.
Partner: UNT Libraries Government Documents Department
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A Photoelectric Hygrometer

Description: Note presenting an instrument that measures small absolute humidity changes by photoelectric examination of the 9440 angstrom units absorption band of water vapor. The instrument consists of a small source of light which sends its radiation over an air path of less than 1.5 meters to a dispersing system.
Date: May 1945
Creator: Hamermesh, Bernard; Reines, Frederick & Korff, Serge A.
Partner: UNT Libraries Government Documents Department
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Effect of Aging Aircraft Structures on Magnesium Parts

Description: Note presenting an analysis of a procedure for artificially aging assemblies and subassemblies to improve the strength properties of the wrought aluminum alloys comprising their principal structure. Information is given on the magnesium alloys which may be present. The forms in which magnesium alloys may be encountered are casings, extrusions, forgings, and sheet.
Date: April 1945
Creator: Winston, A. W.
Partner: UNT Libraries Government Documents Department
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On a Method of Constructing Two-Dimensional Subsonic Compressible Flows Around Closed Profiles

Description: Note showing that under certain conditions, a two-dimensional subsonic compressible flow around an airfoil profile can be derived from an incompressible flow around another profile. The connection between the two "conjugate flows" is given by a simple conformal transformation of the respective hodograph planes.
Date: March 1945
Creator: Bers, Lipman
Partner: UNT Libraries Government Documents Department
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On the Circulatory Subsonic Flow of a Compressible Fluid Past a Circular Cylinder

Description: "The circulatory subsonic flow around an infinite circular cylinder is computed using the linearized pressure-volume relation, by a method developed in a previous report. Formulas and graphs are given for the velocity and pressure distributions, the circulation, the lift, and the dependence of the critical Mach number upon the position of the stagnation point" (p. 1).
Date: July 1945
Creator: Bers, Lipman
Partner: UNT Libraries Government Documents Department
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Properties of low-aspect-ratio pointed wings at speeds below and above the speed of sound

Description: "Low-aspect-ratio wings having pointed plan forms are treated on the assumption that the flow potentials in planes at right angles to the long axis of the airfoils are similar to the corresponding two-dimensional potentials. For the limiting case of small angles of attack and low aspect ratios the theory brings out the following significant properties: (1) The lift of a slender, pointed airfoil moving in the direction of its long axis depends on the increase in width of the sections in a downstream direction. Sections behind the section of maximum width develop no lift. (2) The spanwise loading of such an airfoil is independent of the plan form and approaches the distribution giving a minimum induced drag. (3) The lift distribution of a pointed airfoil travelling point-foremost is relatively unaffected by the compressibility of the air below or above the speed of sound. A best of a triangular airfoil at a Mach number of 1.75 verified the theoretical values of lift and center of pressure" (p. 1).
Date: May 11, 1945
Creator: Jones, Robert T.
Partner: UNT Libraries Government Documents Department
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Graphical and Analytical Methods for the Determination of a Flow of a Compressible Fluid Around an Obstacle

Description: "Chaplygin introduced the hodograph method in the theory of compressible fluid flows and developed a method for constructing stream functions of such flows. This method, which has been extensively used in investigation of compressible fluid flows, is limited in certain respects. The expression for the stream function obtained in this manner can represent only certain types of flow patterns. In general, flow patterns obtained in this way cannot represent the whole flow around an obstacle, but only a part of such a flow, and therefore several expressions are needed in order to obtain the whole flow" (p. 1).
Date: July 1945
Creator: Bergman, Stefan
Partner: UNT Libraries Government Documents Department
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The Elastic Constants for Wrought Aluminum Alloys

Description: "There are several constants which have been devised as numerical representations of the behavior of metals under the action of loadings which stress the metal within the range of elastic action. Some of these constants, such as Young's modulus of elasticity in tension and compression, shearing modulus of elasticity, and Poisson's ratio, are regularly used in engineering calculations. Precise tests and experience indicate that these elastic constants are practically unaffected by many of the factors which influence the other mechanical properties of materials and that a few careful determinations under properly controlled conditions are more useful and reliable than many determinations made under less favorable conditions" (p. 1).
Date: January 1945
Creator: Templin, R. L. & Hartmann, E. C.
Partner: UNT Libraries Government Documents Department
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Bearing strengths of 24S-T aluminum alloy plate

Description: Report presenting a series of tests to determine the bearing yield and ultimate strengths of samples of 1/4- and 2-inch-thick plate of aluminum alloy 24S-T and to establish nominal ratios of bearing-to-tensile properties for the commercial range of plate thicknesses. Results regarding individual bearing testing, ratios of average bearing to tensile properties, and ratios of bearing yield strength to tensile yield strength are provided.
Date: June 1945
Creator: Moore, R. L. & Wescoat, C.
Partner: UNT Libraries Government Documents Department
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On Two-Dimensional Flows of Compressible Fluids

Description: "This report is devoted to the study of two-dimensional steady motion of a compressible fluid. It is shown that the complete flow pattern around a closed obstacle cannot be obtained by the method of Chaplygin. In order to overcome this difficulty, a formula for the stream-function of a two-dimensional subsonic flow is derived" (p. 1).
Date: August 1945
Creator: Bergman, Stefan
Partner: UNT Libraries Government Documents Department
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The Chemical Action of Oils on Single Crystals of Metals

Description: Note presenting a study of the chemical action of oils on large single crystals of metals in the presence of various gases, with special emphasis placed on the influence of crystal plane. The studies primarily have been concerned with four metals: silver, copper, lead, and iron and four types of oil: pure hydrocarbons with mineral oil as representative, oiliness agents with stearic acid as representative, chemical polishing agents with tricresyl phosphate as representative, and commercial oils with new and used aviation oils as representatives. The methods used in preparing large single crystals of various metals are briefly discussed.
Date: November 1945
Creator: Gwathmey, A. T.; Leidheiser, H. & Smith, G. P.
Partner: UNT Libraries Government Documents Department
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Tests on Thin-Walled Celluloid Cylinders to Determine the Interaction Curves Under Combined Bending, Torsion, and Compression or Tension Loads

Description: Note presenting a two part report on cylinder; one is on the modulus of electricity of celluloid sheet and the effect of temperature change on the value of the modulus of elasticity, while the other gives the results of tests on a considerable number of thin-walled, circular celluloid cylinders of several lengths, diameters, and wall thicknesses.
Date: January 1945
Creator: Bruhn, Elmer F.
Partner: UNT Libraries Government Documents Department
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Stresses at Cut-Outs in Shear Resistant Webs as Determined by the Photoelastic Method

Description: "Stress concentration factors for shear stresses around cut-outs in the webs of beams having shear resistant webs were determined by the photoelastic method. Webs with circular, square, and rectangular cut-outs were tested. The effect of reinforcements around square and circular cut-outs was investigated" (p. 1).
Date: October 1945
Creator: Ruffner, Benjamin F. & Schmidt, Calvin L.
Partner: UNT Libraries Government Documents Department
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Summary report on the high-speed characteristics of six model wings having NACA 65(sub1)-series sections

Description: A summary of the results of wind-tunnel tests to determine the high-speed aerodynamic characteristics of six model wings having NACA 65sub1-series sections is presented in this report. The 8-percent-thick wings were superior to the 10-percent and 12-percent-thick wings from the standpoint of power economy during level flight for Mach numbers above 0.76. However, airplanes that are to fly at Mach numbers below 0.76 will gain aerodynamically if the percentage thickness of the wing and the aspect ratio are both increased. The lift-curve slopes for the 8-percent-thick wings at 0.85 Mach number were roughly twice their low-speed values.
Date: October 19, 1945
Creator: Hamilton, William T. & Nelson, Warren H.
Partner: UNT Libraries Government Documents Department
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