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Physics group progress report, July 1--31, 1948

Description: Preparatory work is described for the determination of the vapor pressure of postum (Polonium 210), selenium being used as a surrogate in construction and testing of the apparatus to measure vapor pressure. Design modifications of a vacuum balance are also described.
Date: December 31, 1948
Creator: Knauss, H.P.
Partner: UNT Libraries Government Documents Department
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Physics group progress report, May 1--31, 1948

Description: Various studies conducted at Mound Laboratory concerning physical properties of postum (Polonium 210) are described. Some studies are entitled Purity of Postum (Vacuum Balance Method); Vapor Pressure of Postum; X-ray Studies; Vapor Pressure by Effusion; Molecular Weigh of Postum; and Weighing Procedures for Macroassay.
Date: December 31, 1948
Creator: Knauss, H.P.
Partner: UNT Libraries Government Documents Department
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Physics progress report, February 16--29, 1948

Description: Preliminary study of the characteristics of a now design of a tub type moderator for neutron counting reveals some definite advantages over the laboratory Hanson setup. Two determinations of the purity of postum were made with the vacuum balance apparatus. The first result was 94.81 percent postum and the second 100.5 percent. A redesigned effusion apparatus is described in detail, and results of nine exposures are presented. The data lie fairly close to a straight line on a log p vs 1/T plat, … more
Date: December 31, 1948
Creator: Davis, R., Jr.
Partner: UNT Libraries Government Documents Department
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Physics progress report, March 1--31, 1948

Description: The quarts gauge apparatus for measuring the vapor pressure of postum was completed. The first sample of postum oxidized in the course of preparation, while in a presumably sealed and evacuated quartz tube. an error of 0.4 per cent appears to be present in the vacuum weighing of postum. a diffusion pump is being installed to reduce the pressure, in the hope of minimizing the radiometer effect. Repetition of the effusion experiment with a rebuilt crucible yielded four points below those reported… more
Date: December 31, 1948
Creator: Davis, R., Jr.
Partner: UNT Libraries Government Documents Department
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Process research progress report, April 1--30, 1948

Description: Word was received that the Eimco filter has been shipped from the Salt Lake City plant. It is expected within two weeks or about May 10, 1948. In place of a float gauge referred to in the Process Research Progress Report, March 1--31, 1984, a Uehling Tank-O-Meter will be used on the chemical solution tanks for the W. D. Building. Word was also received that the steam ejector has been shipped. It can be expected within the next few days. This item will complete the equipment to be used for the r… more
Date: December 31, 1948
Creator: Hamilton, P.M.
Partner: UNT Libraries Government Documents Department
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Process research progress report, February 16--29, 1948

Description: Treatment of Hot Liquid Waste: Three runs, D-73, D-74, and D-75, were made in the model clariflocculator during this period. In D-73 and D-74 a mixture of hydrolysis supernatant and water was used as the original solution and in D-75 a hydrolysis supernatant, bismuth free activity and water mixture was used as the starting solution. D-73 gave acceptable results, but D-74 and D-75 gave results that were not too satisfactory. It is believed that contamination in the laboratory has effected the re… more
Date: December 31, 1948
Creator: Hamilton, P.
Partner: UNT Libraries Government Documents Department
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Process research progress report, March 1--31, 1948

Description: Treatment of Hot Liquid Waste: According to the Eimco Corporation, the filter on order in to be shipped the first week of April. Sketches have been prepared giving the general location of the Eimco filter and equipment to be used in testing the unit. No suitable gauge is available for the tanks to be used in the W. D. Building for storing corrosive solutions. A gauge, to be fabricated from polystyrene, has been designed. Treatment of Hot Solid Burnable Waste: Construction of the model incinerat… more
Date: December 31, 1948
Creator: Hamilton, P.
Partner: UNT Libraries Government Documents Department
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Process Section progress report, April 1--30, 1948

Description: The Process group reports that material processing is on schedule and that process laboratories 2 and 3 are being overhauled. The Electrodeposition group reports that they are on schedule but that they are somewhat handicapped due to a lack of coveralls. Administration reports that Site W schedules have been prepared.
Date: December 31, 1948
Creator: Scott, David L.
Partner: UNT Libraries Government Documents Department
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Production division progress report, May 1--31, 1948

Description: A long term study on the possible effect of time on the micro-assay purity of postum product solutions is reported. It was determined that within the time periods studied (up to 102 days) time has no discernible effect on the mass purity of the postum electrodeposited from product solutions.
Date: December 31, 1948
Creator: Burbage, J.J.
Partner: UNT Libraries Government Documents Department
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Production Division progress report, September 1--30, 1948

Description: Experiments are progressing on the development and testing of a special Logac-L contamination shield. Further investigations are being made on the possible effect of time on the mass purity of polonium deposited from product solutions.
Date: December 31, 1948
Creator: Burbage, J.J.
Partner: UNT Libraries Government Documents Department
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Production electrolysis studies V

Description: This study seeks to determine the decomposition of bismuth trioxide by polarography. Results gained confirmed that at decomposition potentials observed that bismuth will not be reduced under normal plating conditions observed during production.
Date: December 31, 1948
Creator: Power, W. H. & Ford, M.
Partner: UNT Libraries Government Documents Department
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Production research progress report, February 16--29, 1948

Description: The equipment for the Bismuth-II process has been installed at Unit IV., and two runs have been made. The results on the potential of bismuth in bismuth chloride solutions have been summarized and calculations made on the concentration of silver in solution which must be present if silver is to be reduced to the metal by Metallic bismuth. The results have been compared with earlier experiments in which the deposition of silver on bismuth was investigated by the use of gamma active silver as a t… more
Date: December 31, 1948
Creator: Payne, J.H. Jr.
Partner: UNT Libraries Government Documents Department
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Quartz fiber research progress report. May 1--31, 1948

Description: This document describes the construction and calibration of a quartz fiber microbalance. The preparation and purification of diphenyl carbazide for use as a cement with the quartz fibers is also described.
Date: December 31, 1948
Creator: Olt, R.G.
Partner: UNT Libraries Government Documents Department
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Summary of Results of Tumbling Investigations Made in the Langley 20-Foot Free-Spinning Tunnel on 14 Dynamic Models

Description: Report presenting the tumbling characteristics of dynamic models of 14 airplane designs in the free-spinning tunnel for various loadings and configurations. Conventional airplanes were not found to tumble, but tailless and tail-first airplanes might depending on the amount of static longitudinal stability. Results regarding the effect of dimensional and mass characteristics, effect of controls, use of parachutes as a tumble-recovery device, accelerations, and possibility of pilot escape are pro… more
Date: December 31, 1948
Creator: Stone, Ralph W., Jr. & Bryant, Robert L.
Partner: UNT Libraries Government Documents Department
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Correlation of cylinder-head temperatures and coolant heat rejections of a multicylinder, liquid-cooled engine of 1710-cubic-inch displacement

Description: "Data obtained from an extensive investigation of the cooling characteristics of four multicylinder, liquid-cooled engines have been analyzed and a correlation of both the cylinder-head temperatures and the coolant heat rejections with the primary engine and coolant variables was obtained. The method of correlation was previously developed by the NACA from an analysis of the cooling processes involved in a liquid-cooled-engine cylinder and is based on the theory of nonboiling, forced-convection… more
Date: August 31, 1948
Creator: Lundin, Bruce T.; Povolny, John H. & Chelko, Louis J.
Partner: UNT Libraries Government Documents Department
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Monthly Progress Report No. 61 for May, 1948

Description: This is the University of California, Radiation Laboratory monthly progress report for May 1948. It discusses the following: (1) 184-inch Cyclotron Program; (2) 60-inch Cyclotron Program; (3) Synchrotron Program; (4) Linear Accelerator Program; (5) Experimental Physics; (6) Theoretical Physics, (7) Isotope Separation Program; (8) Chemistry Departments; (9) Medical Physics; and (10) Health Physics and Chemistry.
Date: May 31, 1948
Creator: Authors, Various
Partner: UNT Libraries Government Documents Department
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High-Speed Aerodynamic Characteristics of Four Thin NACA 63-Series Airfoils

Description: Memorandum presenting high-speed wind-tunnel tests of four thin NACA 63-series airfoil sections with a design lift coefficient of 0.2 with the uniform-load type of mean camber line to determine the effectiveness of forward movement of the minimum-pressure position in improving the high-speed lift characteristics of low-drag airfoils. Results regarding the tunnel-wall effects, lift coefficient, drag coefficient, and moment coefficient are provided.
Date: December 31, 1947
Creator: Ilk, Richard J.
Partner: UNT Libraries Government Documents Department
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The medical applications of radioactive tracers

Description: This report provides a broad yet in depth overview of the use of radioactive materials as tracers in medicine and biology for the period of 1935--1947. Particular attention is paid to is of radio-sodium, radio-iodine, radio-iron, radio-phosphorus, radio-strontium, and fission products. The main thrust of this paper is human rather than animal work and focuses in work that has been published.
Date: December 31, 1947
Creator: Hamilton, J. G.
Partner: UNT Libraries Government Documents Department
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Preliminary Results of an Altitude-Wind-Tunnel Investigation of a TG-100A Gas Turbine-Propeller Engine 5 - Combustion-Chamber Characteristics

Description: "An investigation to determine the performance and operational characteristics of the TG-1OOA gas turbine-propeller engine was conducted in the Cleveland altitude wind tunnel. As part of this investigation, the combustion-chamber performance was determined at pressure altitudes from 5000 to 35,000 feet, compressor-inlet rm-pressure ratios of 1.00 and 1.09, and engine speeds from 8000 to 13,000 rpm. Combustion-chamber performance is presented as a function of corrected engine speed and corrected… more
Date: December 31, 1947
Creator: Gensenheyner, Robert M. & Berdysz, Joseph J.
Partner: UNT Libraries Government Documents Department
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Progress Report for the Month of December, 1947 : Contract No. W-38-094-eng-27

Description: This report for December, 1947 describes progress in ore dressing and pyrometallurgical studies, chemical work on phosphates, and analytical work.
Date: December 31, 1947
Creator: Center, E. J.; Pray, H. A.; Richardson, A. C. & Sullivan, John D.
Partner: UNT Libraries Government Documents Department
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Supersonic-Tunnel Tests of Two Supersonic Airplane Model Configurations

Description: Report presenting supersonic-tunnel tests of two models of similar supersonic airplane configurations at Mach numbers of 1.55, 1.90, and 2.32 to determine values of the drag, lift, pitching moment, yawing moment, and side force. The models were similar except for the vertical wing location relative to the body axis and horizontal tail; one had a high wing and one had a low wing. Results regarding the precision of data, Reynolds numbers of tests, results at the different Mach numbers, and Schile… more
Date: December 31, 1947
Creator: Ellis, Macon C., Jr.; Hasel, Lowell E. & Grigsby, Carl E.
Partner: UNT Libraries Government Documents Department
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Development of Outboard Nacelle for the XB-36 Airplane

Description: From Summary: "An investigation of two 1/14 scale model configurations of an outboard nacelle for the XB-36 airplane was made in the Langley two-dimensional low-turbulence tunnels over a range of airplane lift coefficients (C (sub L) = 0.409 to C(sub L) = 0.943) for three representative flow conditions. The purpose of the investigation was to develop a low-drag wing-nacelle pusher combination which incorporated an internal air-flow system. The present investigation has led to the development of… more
Date: October 31, 1947
Creator: Nuber, Robert J.
Partner: UNT Libraries Government Documents Department
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