Technical Report Archive & Image Library (TRAIL) - 102 Matching Results

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Two-Dimensional Irrotational Transonic Flows of a Compressible Fluid

Description: The methods of NACA TN No. 995 have been slightly modified and extended in include flows with circulation by considering the alteration of the singularities of the incompressible solution due to the presence of the hypergeometric functions in the analytic continuation of the solution. It was found that for finite Mach numbers the only case in which the nature of the singularity can remain unchanged is for a ratio of specific heats equal to -1. From a study of two particular flows it seems that … more
Date: June 1948
Creator: Kuo, Yung-Huai
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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General Engineering and Consulting Laboratory "Hot Service" Turbine Pump Progress Report: May 1 to June 15, 1948

Description: Introduction: "This report covers progress on the testing of the General Engineering and Consulting Laboratories Turbine Pump No. 1 from May 1, 1948 to Jun 15, 1948. All testing prior to April 30, 1948 has been described in Redox Experiment Testing Report No. 1 (Document HW-9474) and No. 2 (Document HW-9694)."
Date: June 21, 1948
Creator: Stringer, J. T. & Allen, A. W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Zirconium Pheylarsonate Tracer Scale Method for the Differentiation of Pu(III) and Pu(IV) in Redox Solutions

Description: The following report studies an estimation of the amount of Pu(III) and Pu(IV) present in the IBP Stream, with the purpose of establishing an analytical, method suitable for routine control analysis. A method is discussed that is based on carrying Pu(IV) upon a zirconium phanylarsonate precipitate.
Date: June 30, 1948
Creator: Ice, C. H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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A Generalized Theoretical Investigation of the Hydrodynamic Pitching Moments Experienced by V-Bottom Seaplanes During Step-Landing Impacts and Comparisons With Experiment

Description: Note presenting a theoretical investigation made of the hydrodynamic pitching moments experienced by V-bottom seaplanes during step-landing impacts. The entire immersion process is analyzed from the instant of initial contact until the seaplane rebounds from the water surface.
Date: June 1948
Creator: Milwitzky, Benjamin
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Report on the Brookhaven Nuclear Reactor Prepared for Reactor Safeguard Committee of the Atomic Energy Commission

Description: This technical report provides a general description of the Brookhaven National Laboratory, describing the nuclear characteristics of the Brookhaven reactor and more detailed descriptions of the features and instrumentation of the reactor.
Date: June 22, 1948
Creator: Brookhaven National Laboratory
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Nuclear Synthesis of Element 43 (Tc)#x

Description: The following report on the nuclear synthesis of technetium is based on work performed under contract No. W-7405-eng-26 for the Atomic Energy Project at Oak Ridge National Laboratory.
Date: June 14, 1948
Creator: Motta, E. E. & Boyd, G. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Effect of X Irradiation on the Maturation of the Circulating Reticulocyte

Description: This report studies the effect of x irradiation on the maturation of the circulating reticulocytes, using samples of rabbit blood with and without phenylhydresine- or bleeding-induced anemia and comparing them to the blood of human subjects under similar circumstances.
Date: June 21, 1948
Creator: Gaston, Evelyn O. & Jacobson, Leon O.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Analysis of Flight-Performance Measurements on a Twisted, Plywood-Covered Helicopter Rotor in Various Flight Conditions

Description: From Introduction: "In references 1, 2, and 3, flight measurements of the performance of a conventional, single-rotor helicopter equipped with its production fabric-covered main rotor blades are presented."
Date: June 1948
Creator: Gustafson, F. B. & Gessow, Alfred
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Effects of fuel-nozzle carbon deposition on combustion efficiency of single tubular-type, reverse-flow turbojet combustor at simulated altitude conditions

Description: Report presenting an investigation to study the effects of changes in fuel-nozzle carbon deposition on the combustion efficiency of a single tubular-type, reverse-flow, turbojet combustor. The investigation was conducted because of the need to improve the reproducibility of combustion data for fuel-research purposes.
Date: June 1948
Creator: Dittrich, Ralph T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Effect of Longitudinal Stiffeners on the Buckling Load of Long Flat Plates Under Shear

Description: "An investigation was made to determine the effect of longitudinal stiffeners on the buckling load of long flat plates under shear. Tests were made of long flat plates reinforced by one and by two longitudinal stiffeners. A theoretical study of the buckling load of such plates, made by the energy method, is presented in the appendix. The results of the tests and the results of the theory are compared and are found to be in fair agreement" (p. 1).
Date: June 1948
Creator: Crate, Harold & Lo, Hsu
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Aerodynamic Characteristics of a Number of Modified NACA Four-Digit-Series Airfoil Sections

Description: Report presenting theoretical pressure distributions and experimental aerodynamic characteristics at low speeds for a group of NACA four-digit series airfoil sections. Results regarding lift, drag, and pitching moment are provided.
Date: June 1948
Creator: Loftin, Laurence K., Jr. & Cohen, Kenneth S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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An Investigation of a Thermal Ice-Prevention System for a Cargo Airplane 9: The Temperature of the Wing Leading-Edge Structure as Established in Flight

Description: Report presenting flight measurements of structure temperatures occurring in the wing outer panel of the airplane in order to improve the design of thermal ice-prevention systems. Results indicate that structure temperatures increased almost in direct proportion with an increase in heated-air temperature.
Date: June 1948
Creator: Schlaff, Bernard A. & Selna, James
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Calculated performance of 12-cylinder liquid-cooled engine with exhaust-gas turbine geared to crankshaft

Description: Report presenting computations of the horsepower and specific fuel consumption of a compound engine composed of an exhaust-gas turbine and an auxiliary supercharger geared to the crankshaft of a 12-cylinder liquid-cooled engine. Results regarding the engine exhaust pressure, engine speed, fuel-air ratio, inlet-manifold pressure, turbine, auxiliary-supercharger, and drive-gear efficiency, effect of altitude, comparison of compound and turbosupercharged engines, performance at high-power levels, … more
Date: June 1948
Creator: Desmon, Leland G. & Doyle, Ronald B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Application of Statistical Methods to Study of Gas-Turbine Blade Failures

Description: Note presenting an investigation conducted to determine the applicability of statistical methods as an approach to the evaluation of materials for use in gas turbines by determining the frequency distribution of time until failure of gas-turbine blades. Two wheels, each incorporating 142 inserted blades of a cast cobalt-base heat-resistant alloy, were tested. The results indicated that the time for first failure may not generally be taken as an accurate indication of the performance of the aver… more
Date: June 1948
Creator: Hoffman, Charles A. & Ault, G. Mervin
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Standard Symbols for Helicopters

Description: "A list of standard symbols for rotating-wing aircraft is presented. The list of symbols is subdivided for ready reference under appropriate headings, the symbols being restricted to those most generally used in studies of helicopter aerodynamics" (p. 1).
Date: June 1948
Creator: Gessow, Alfred
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Cylinder-Head Temperatures and Coolant Heat Rejections of a Multicylinder, Liquid-Cooled Engine of 1710-Cubic-Inch Displacement

Description: Note presenting an extensive investigation of the cooling characteristics of a multicylinder, liquid-cooled aircraft engine of 1710-cubic-inch displacement. The results of the investigation are presented showing the variation of the cylinder-head temperature and the coolant heat rejection with the pertinent engine and coolant variables. Results regarding the relations between cylinder temperatures, effect of engine variables on average cylinder-head temperature between exhaust valves, coolant-f… more
Date: June 1948
Creator: Povolny, John H. & Chelko, Louis J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Effect of size and number of outlet pipes on design of collectors for rating and testing axial-flow compressors

Description: Report presenting an experimental investigation to determine the effect of design factors on the performance of collectors for axial-flow compressors, which consisted of airflow studies of an experimental collector on which six different outlet configurations were used. The size and number of outlet pipes had little effect on the static-pressure distribution at the collector inlet.
Date: June 1948
Creator: Moses, Jason J. & Kazberovich, Thomas I.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Quantitative analysis of ternary mixtures of naphthalene, 1-methylnaphthalene, and 2-methylnaphthalene by ultraviolet spectrophotometry

Description: Report presenting a method for quantitative analysis of ternary mixtures of naphthalene, 1-methylnaphthalene, and 2-methylnaphthalene on the basis of ultraviolet absorption in the region from 3000 to 3300 A and the effect of interference by a fourth absorber. Twelve synthetic ternary mixtures of three naphthalenes were analyzed with an average error of 0.8 percent of the alkylnaphthalenes present.
Date: June 1948
Creator: Cleaves, Alden P.; Carver, Mildred S. & Hibbard, Robert R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Effect of Hydrocarbon Type and Chain Length on Uniform Flame Movement in Quiescent Fuel-Air Mixtures

Description: Report presenting the results of flame-speed measurements of quiescent fuel-air mixtures in a 2.5-centimeter horizontal glass tube of 16 straight-chain hydrocarbons of paraffin, olefin, diolefine, and acetylene series and four cyclic hydrocarbons presented in graphical form. Results regarding peak flame velocity and uniform flame velocity are provided.
Date: June 1948
Creator: Reynolds, Thaine W. & Ebersole, Earl R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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A method for determination of aromatics in 150 degree to 300 degree C fractions of crude petroleum by measurement of aniline-point rise

Description: Report presenting a method for determining aromatics in several fractions of crude petroleum. A general curve for analysis of cuts of crude petroleum with molal average boiling points near 218 degrees Celsius is presented.
Date: June 1948
Creator: Busch, Arthur M.; Cleaves, Alden P. & Hibbard, Robert R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Effect of landing flaps and landing gear on the spin and recovery characteristics of airplanes

Description: Report presenting the effect of landing flaps and landing gear on the spin and recovery characteristics of airplanes as determined from investigations of the spinning characteristics of 58 models in the 15-foot and 20-foot free-spinning tunnels. Lowering flaps was generally found to cause an increase in inward sideslip, an increase in the angle of attack, and a decrease in the rate of rotation of the model in the spin.
Date: June 1948
Creator: Gale, Lawrence J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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A Statistical Analysis of Gust-Velocity Measurements as Affected by Pilots and Airplanes

Description: Note presenting gust data obtained during the U.S. Weather Bureau thunderstorm project in Orlando, Florida in 1946, which is analyzed statistically to determine the effects on the gust measurements of the several pilots and the several airplanes of the same model. The results indicate that, for three of the pilots and two of the airplanes, the effects on the gust measurements may introduce average errors of about 10 percent.
Date: June 1948
Creator: Press, Harry
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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