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Electronics progress report, April 1--30, 1949

Description: Prospectus` of Band Pass Amplifiers for Proportional Counters and Instrumentation for the Study of the Electrodeposition Potential of Radioactive Elements have been submitted for review and approval. An error was found in calculations for the band pass amplifier discussed in Group 9 of the Electronics Progress Report,MLM-306, March 1--31, 1949, on the Cathode-Follower Probe. New calculations have been made and a band pass filter constructed to match the new values. Work on the cathode-follower … more
Date: December 31, 1949
Creator: Heyd, J. W. & Ohmart, P. E.
Item Type: Refine your search to only Report
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Electronics progress report, March 1--31, 1949

Description: With the completion of tests of the prototype cathode-follower, it was decided to produce three more models. These have been constructed and pass the same pulse as that of the prototype. Drawings are being made of these units. By the time these units had been completed, the amplifier of the scaler was modified so that its frequency response was essentially flat up to 4.5 megacycles. Using this amplifier and the cathode-follower, a study of the pulse shapes was made and four different pulse shap… more
Date: December 31, 1949
Creator: Heyd, J. W. & Ohmart, P. E.
Item Type: Refine your search to only Report
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Instrumental analysis progress report, June 1--30, 1949

Description: Several bismuth compounds have been submitted by E. Orban for examination by x-ray diffraction. The sample of polonium in contact with platinum mentioned in the May progress report was received and identified tentatively from its x-ray diffraction pattern as PtPo{sub 2}. Calibration of the Perkin-Elmer infrared spectrophotometer has been completed and a preliminary study of the infrared absorption of NiCO{sub 4} made. Data showing the spectral purity obtainable on three ultraviolet-visible spec… more
Date: December 31, 1949
Creator: Timma, D.L.
Item Type: Refine your search to only Report
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Production research progress report, March 1--31, 1949

Description: A study has been made of the time and temperature required to anneal Teflon and Fluorothene. It has been found that, by proper annealing, the strains my be removed and cold-flow prevented. The disk stopcocks prepared with annealed plastics have not developed leaks on standing. A description is given of the modified slug-dissolver heating unit which has been installed in the Bismuth-II Process Line. Work has been continued on the absorption spectra of bismuth in hydrochloric acid solutions. Two … more
Date: December 31, 1949
Creator: Payne, J.H. Jr.
Item Type: Refine your search to only Report
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Recovery of uranium and plutonium from Redox off-standard aqueous waste streams

Description: In the operation of countercurrent extraction columns as in the Redox process, it is possible, and probable, that from unexpected behaviour of a column, operator error, colloid formation, etc., there will result from time to time excessive losses of uranium and plutonium in the overall process. These losses will naturally accumulate in the waste streams, particularly in the aqueous waste streams. If the loss is excessively high, and such lost material can be recovered by some additional method,… more
Date: December 31, 1949
Creator: Holm, C. H. & Matheson, A. R.
Item Type: Refine your search to only Report
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Nomograms for Obtaining the Compound Composition of Hydrated Limes from the Oxide Analysis

Description: Report with two nomograms presented for rapidly obtaining the compound composition of hydrated limes from the oxide analysis. The general nomogram can be applied to any commercial hydrated lime and gives values accurate to within 0.3 percent while the special nomogram is applicable only to regularly hydrated and highly hydrated dolomitic limes and is accurate to within 0.1 percent.
Date: December 30, 1949
Creator: Levin, Ernest M.
Item Type: Refine your search to only Report
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Trip Report, December 16--21, 1949

Description: December 16--20, 1949 were spent in inspection of the equipment of the Naval Pilot Channel Test Rig at the Oak Ridge pile, observation of its maintenance and use, and in discussions with the test operating personnel, and members of the H.P. and pile operating divisions. December 21 was spent at the Argonne National Laboratories, Naval Reactor Division, in inspection of the test rig under construction for use at the H pile. Dr. Etherington requested that I express their desire to arrange that an… more
Date: December 30, 1949
Creator: Snoeberger, D. F.
Item Type: Refine your search to only Report
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A PreliminaryReport on the Mechanism of the Decomposition ofDiacetyl Peroxide in Acetic Acid

Description: The decomposition of diacetyl peroxide in acetic acid-2-C{sup 14} has been studied, The activity of the products in general confirmed the mechanism of the reaction as proposed by Kharasch and Gladstone, The presence and distribution of activity in the methyl acetate produced in this reaction is not explained by the previously proposed mechanism. There was no appreciable exchange of acetic acid and diacetyl peroxide under the conditions of the reaction. Essentially no exchange of methyl acetate … more
Date: December 29, 1949
Creator: Fry, A.J.; Tolbert, B.M. & Calvin, Melvin
Item Type: Refine your search to only Report
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Homogeneous Reactor Preliminary Process Design Report

Description: "The following report is meant to serve a two fold purpose. First, it is the quarterly report of the homogeneous reactor project for the Technical Division of Oak Ridge National Laboratory. Secondly, it is a description and general feasibility discussion of a 200-1000 K.W. pilot model, homogeneous reactor."
Date: December 28, 1949
Creator: Graham, C. B.; Secoy, C. H.; Spiewak, Irving; Taylor, E. H.; Weinberg, Alvin Martin, 1915-2006; Winters, C. E. et al.
Item Type: Refine your search to only Report
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Correlation of pressure drop data isothermal flow through standard process tube assembly

Description: The experimental data presented in HDC-1255 for the pressure drops through the various portions of a standard process tube assembly for isothermal flow are correlated in this report. Data include orifice sizes up to 0.310 inches. The equations have been adapted for the calculation of pressure drops or flow rates for clean tubes in pile operation. A systematic procedure is outlined for determining the pressure drops through each portion of the tube assembly. A method is presented for calculating… more
Date: December 27, 1949
Creator: Sege, C. A.
Item Type: Refine your search to only Report
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Trip report: Argonne National Lab., Naval Reactor Division, December 12--13, 1949

Description: This trip was spent in conferences with H. Etherington, A. Amroni, Geo. Anderson, and L.W. Fromm; and in inspection of components now being built for the Navy Test Rig which is to be installed at H Pile. Mr. Anderson believes that the entire assembly will arrive at Hanford between January 16 and 23, 1950. Much has yet to be designed and built, however. Also, certain incompatibilities with the H Pile were pointed out, and will be altered.
Date: December 27, 1949
Creator: Lambert, J. B.
Item Type: Refine your search to only Report
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Radioactive contamination in the environs of the Hanford Works for the period January, February, March 1949

Description: This report summarizes in somewhat more detail than the monthly H.I. Environs reports the extent and magnitude of the radioactive contamination detected in the environs of the Hanford Works. Radioactive contamination resulting from the operation of the Hanford Works as well as that found occurring in natural quantities is included. This belated report is being issued merely for the records to serve as a composite summary of measurements already reported in the monthly H.I. Environs reports and … more
Date: December 23, 1949
Creator: Singlevich, W. & Paas, H.J.
Item Type: Refine your search to only Report
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Ditching Investigation of a 1/18-Scale Model of the North American B-45 Airplane

Description: An investigation of a 1/18-scale dynamically similar model of the North American B-45 airplane was made to observe the ditching behavior and determine the proper landing technique to be used in an emergency water landing. Various conditions of damage were simulated to determine the behavior which probably would occur in a full-scale ditching. The behavior of the model was determined from high-speed motion-picture records, time-history acceleration records, and visual observations. It was conclu… more
Date: December 22, 1949
Creator: Fisher, Lloyd J. & Thompson, William C.
Item Type: Refine your search to only Report
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Theoretical antisymmetric span loading for wings of arbitrary plan form at subsonic speeds

Description: A simplified lifting-surface theory that includes effects of compressibility and spanwise variation of section lift-curve slope is used to provide charts with which antisymmetric loading due to arbitrary antisymmetric angle of attack can be found for wings having symmetric plan forms with a constant spanwise sweep angle of the quarter-chord line. Consideration is given to the flexible wing in roll. Aerodynamic characteristics due to rolling, deflected ailerons, and sideslip of wings with dihedr… more
Date: December 22, 1949
Creator: DeYoung, John
Item Type: Refine your search to only Report
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Effects of wing flexibility and variable air lift upon wing bending moment during landing impacts of a small seaplane

Description: From Summary: "A smooth-water-landing investigation was conducted with a small seaplane to obtain experimental wing-bending-moment time histories together with time histories of the various parameters necessary for the prediction of wing bending moments during hydrodynamic forcing functions. The experimental results were compared with calculated results which include inertia-load effects and the effects of air-load variation during impact. The responses of the fundamental mode were calculated w… more
Date: December 21, 1949
Creator: Merten, Kenneth F. & Beck, Edgar B.
Item Type: Refine your search to only Report
open access

Flight Test of the Aerojet 7KS-6000 T-27 Jato Rocket Motor

Description: "A flight test of the Aero jet Engineering Corporation's 7KS-6000 T-27 Jato rocket motor was conducted at the Langley Pilotless Aircraft Research Station at Wallops Island, Va, to determine the flight performance characteristics of the motor. The flight test imposed an absolute longitudinal acceleration of 9.8 g upon the rocket motor at 2.8 seconds after launching. The total impulse developed by the motor was 43,400 pound-seconds, and the thrusting time was 7.58 seconds" (p. 1).
Date: December 20, 1949
Creator: Bond, Aleck C. & Thibodaux, Joseph G., Jr.
Item Type: Refine your search to only Report
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A Free-Flight Technique for Measuring Damping in Roll by Use of Rocket-Powered Models and Some Initial Results for Rectangular Wings

Description: Report presenting a simplified method for obtaining free-flight measurements of damping in roll through the use of rocket-powered models. Initial configurations have been tested for a range of Mach numbers. Results regarding the rolling velocity with two different airfoil sections and damping-in-roll coefficient are provided.
Date: December 20, 1949
Creator: Edmondson, James L. & Sanders, E. Claude, Jr.
Item Type: Refine your search to only Report
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Refrigeration System Used in Mercury Isotope Collections

Description: From introduction: During 1948, the Isotope Research and Production Division undertook to obtain small quantities of nearly pure mercury isotopes by electromagnetic isotope separation. The possible use of a mercury isotope of even-numbered mass to establish an international standard of length required an isotopic purity greater than 99 per cent. It, became apparent that this degree of separation could only be achieved by preventing random diffusion of un-ionized mercury which otherwise would co… more
Date: December 19, 1949
Creator: Duncan, F. R. & Cobb, W. G.
Item Type: Refine your search to only Report
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Spontaneous Fission of 48

Description: Report discussing an experiment to reinvestigate the spontaneous fission of 48 (Pu-238) in an effort to determine a more accurate value for the spontaneous fission constant that was found in a previous experiment.
Date: December 19, 1949
Creator: Jungerman, John A.
Item Type: Refine your search to only Report
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Comparison of Effectiveness of Coordinated Turns and Level Sideslips for Correcting Lateral Displacement During Landing Approaches

Description: Memorandum presenting a calculation of the amount of possible correction for coordinated turns with limited bank angle and level sideslips for a large transport airplane, the C-54D. The results indicate that for all instances from the end of the runway, coordinated turns are the more effective maneuver.
Date: December 15, 1949
Creator: Faber, Stanley
Item Type: Refine your search to only Report
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