Technical Report Archive & Image Library (TRAIL) - 106 Matching Results

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Analysis of experimental low-speed loss and stall characteristics of two-dimensional compressor blade cascades

Description: From Introduction: "In the present report, the concept of velocity diffusion is applied in an analysis of blade losses expressed in terms of the fundamental parameter of wake momentum thickness. Restrictions and limitations involved in the application of the results to cascade performance analyses are discussed."
Date: March 19, 1957
Creator: Lieblein, Seymour
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Anisotropic Elastic Scattering of Neutrons

Description: In an elastic collision the neutron loses part of its kinetic energy to the nucleus with both the kinetic and momentum of the system being conserved. However, for many elements the scattering is not isotropic in the center-of-mass system at the higher neutron energies. Many of the present reactor multigroup codes include anisotropic scattering at the high neutron energies, while many others assume isotropic scattering at all energies. In order to consider some of the effects of including anisot… more
Date: March 21, 1957
Creator: Copenhaver, C. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Beryllium

Description: The information concerning beryllium assembled herein has been selected primarily to provide information that might be pertinent to the design of the ART. The creep-rupture data in the literature have been obtained from vacuum cast and extruded beryllium, rather than from the hot-pressed beryllium which will be used in the ART. A research program is being conducted by the Brush Beryllium Company, under contract to the Oak Ridge National Laboratory, which will eventually provide the design engi… more
Date: March 21, 1957
Creator: Whitman, M. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Beryllium-oxide : [bibliography]

Description: "This is a bibliography of journal articles relating to beryllium oxide. Sources consulted include; Chemical Abstracts, 1951-1955; Physics Abstracts, 1951-1955; Industrial Arts Index, 1955-Jan, 1957; and the library card catalog. Starred articles are available in the library.
Date: March 22, 1957
Creator: Cason, Maggie
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Brief Studies of Turbojet Combustor and Fuel-System Operation With Hydrogen Fuel at -400 Degrees F

Description: Memorandum presenting a single J33 combustor and an experimental tubular combustor incorporating a fuel vaporizer as operated with gaseous hydrogen at temperatures slightly above the boiling point of the fuel. Data were obtained to explore possible effects of the fuel temperature on combustor performance and on the control and measurement of fuel flow.
Date: March 7, 1957
Creator: Straight, David M.; Smith, Arthur L. & Christenson, Harold H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Chemical Engineering Division Summary Report October, November, and December, 1956

Description: A final series of runs was made in a four-inch continuous-flow mixing chamber to study the transfer of isobutanol into water and nitrobenzene into ethylene glycol. Satisfactory techniques were developed to provide for the rapid analysis of these systems. In addition, a light-scattering correlation was prepared to provide a measure of the interfacial area of the yellow-colored nitrobenzene-ethylene glycol mixtures.
Date: March 1957
Creator: Lawroski, Stephen; Rodger, W. A.; Vogel, R. C. & Munnecke, V. H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Comments on the Determination of the Particle Size Distribution of Thorium Oxide

Description: Factors affecting the results of thoria particle size distribution measurements by sedimentation procedures currently and recently employed are considered. The effects of thoria concentration, solvent, dispersant, thoria properties, and other factors are discussed.
Date: March 31, 1957
Creator: Moore, G. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Comparison of Experimental and Theoretical Zero-Lift Wave-Drag Results for Various Wing-Body-Tail Combinations at Mach Numbers Up to 1.9

Description: "Comparisons are made of experimental and theoretical zero-lift wave drag for several nose shapes, wing-body combinations, and models of current airplanes at Mach numbers up to 1.0. The experimental data were obtained from tests in the Ames 6- by 6-foot supersonic wind tunnel and at the NACA Wallops Island facility. The theoretical drag was found by use of linear theory utilizing model area distributions" (p. 1).
Date: March 27, 1957
Creator: Petersen, Robert B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Comparison of NACA 65-series compressor-blade pressure distributions and performance in a rotor and in cascade

Description: An investigation has been conducted to compare the performance of NACA 65-series compressor blades in two-dimensional cascade with that in an axial flow compressor. Blade pressure distributions were obtained by the use of a mercury-seal pressure-transfer device. The comparison indicated that cascade data accurately predicted the turning angle and blade pressure distribution obtained in the compressor at design conditions.
Date: March 1957
Creator: Westphal, Willard R. & Godwin, William R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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A comparison of typical National Gas Turbine Establishment and NACA axial-flow compressor blade sections in cascade at low speed

Description: Report presenting comparative low-speed cascade tests of the National Gas Turbine Establishment of Great Britain axial-flow compressor blade sections at a range of air-inlet angles and a solidity of 1.0 using the porous wall technique. Results regarding a comparison of performance characteristics of the NGTE and NACA axial-flow compressor blade sections and a comparison of NGTE and NACA low-speed cascade tests of the NGTE 10C4/30C50 section are provided.
Date: March 1957
Creator: Felix, A. Richard & Emery, James C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Compatibility Tests of Various Materials in Molten Sodium

Description: Several compatibility test of various materials in contact in sodium under 500 psi pressure were conducted for 716 hr at 1500 F. Of the diffusion couples studies, the Inconel-beryllium system showed the largest amount al alloying. The reaction between molybdenum and beryllium resulted in the formation of two compounds, both of which were severely cracked in several areas. The molybdenum-INOR #8, and the INOR #8p type 316 stainless steel interfaces showed little if any alloying.
Date: March 25, 1957
Creator: Carlander, R. & Hoffman, E. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Conceptual Design of an Advanced Engineering Test Reactor

Description: From abstract: This report describes a conceptual design for an Advanced Engineering Test Reactor. The reactor is a large graphite assembly penetrated by parallel Zircaloy tubes through which flow as heavy water solution of uranyl sulfate. Reactor power is 220 megawatts.
Date: March 1, 1957
Creator: Mallon, R. G.; Saldick, J. & Gibbons, R. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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A correlation of low-speed, airfoil-section stalling characteristics with Reynolds number and airfoil geometry

Description: From Summary: "The low-speed stalling characteristics of a large number of airfoil sections have been correlated with Reynolds number and a single airfoil ordinate near the leading edge as the correlation parameters. The correlation is appropriate only to airfoils without high-lift devices in flows of very low turbulence and with aerodynamically smooth surfaces."
Date: March 1957
Creator: Gault, Donald E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Design and Investigation of a Transonic Axial-Flow Compressor Rotor With an Inlet Hub-Tip Radius Ratio of Essentially Zero

Description: Report presenting an investigation of an axial-flow compressor rotor with an inlet hub-tip radius ratio of basically zero. Results regarding the radial distribution of total-pressure ratio and efficiency, measured pressure ratio at design speed, weight flow, and low-speed cascade data are provided.
Date: March 11, 1957
Creator: Westphal, Willard R. & Maynard, John W., Jr.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Effects of Heat Treatment on Microstructure and Fabricability of 48 wt % Uranium - 52 wt % Aluminum Alloys

Description: It has been reported in the literature that prolonged soaking of 16 wt & uranium-aluminum alloys at elevated temperatures induces a microstructural changed termed "conglobulation". this process is essentially a spheroidization of the UAl4 eutectic. Conclusions of the tests: (1) Extended soaking of 48 wt $ uranium-aluminum alloy billets at 600 C does not improve their hot-rolling characteristics. (2) Soaking periods of 50 hours and greater reduce the tensile and yield strengths of these alloys.… more
Date: March 15, 1957
Creator: Thurber, William C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Electrical Properties of Sandstones of the Morrison Formation

Description: The following report covers the study of electrical properties of the Morrison formation in the Uravan mineral belt of the Colorado Plateau to determine if there are anomalous variations in these properties in and near zones of uranium-vanadium minerals which might serve as a target for geophysical prospecting.
Date: March 1957
Creator: Keller, George V.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Electromagnetic Research Division Quarterly Progress Report, Part I for Period Ending June 30, 1952

Description: From abstract: "On the 86-inch cyclotron a 41-kw beam has been calorimetered at a net ion loading efficiency of 40%; the average proton current was 1.85 ma at 22.5 Mev. Practical specific yields have been determined for (p,2n) reactions on zinc and bismuth. The investigation of products of proton-induced fission of uranium has been continued and new techniques are being used in measuring angular distribution of reaction products. The 63-inch heavy particle cyclotron is now in operation; N+++ pa… more
Date: March 7, 1957
Creator: Livingston, Robert S. & Howard, F. T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The erosion of meteors and high-speed vehicles in the upper atmosphere

Description: From Summary: "A simple inelastic collision model of meteor-atmosphere interaction is used and analytic relations for velocity, deceleration, size, and relative luminous magnitude of meteors are derived and expressed in dimensionless parametric form. The analysis is compared with available quantitative observations of meteor behavior and it is indicated that a large fraction of the atmospheric bombardment energy is used in eroding meteor material. The erosion from large, high-speed vehicles as … more
Date: March 1957
Creator: Hansen, C. Frederick
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Experimental Comparison of Speed: Fuel-Flow and Speed-Area Controls on a Turbojet Engine for Small Step Disturbances

Description: Optimum proportional-plus-integral control settings for speed - fuel-flow control, determined by minimization of integral criteria, correlated well with analytically predicted optimum settings. Engine response data are given for a range of control settings around the optimum. An inherent nonlinearity in the speed-area loop necessitated the use of nonlinear controls. Response data for two such nonlinear control schemes are presented.
Date: March 1957
Creator: Wenzel, L. M.; Hart, C. E. & Craig, R. T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Experimental Investigation of Temperature Feedback Control Systems Applicable to Turbojet-Engine Control

Description: Temperature - fuel-flow and temperature-area feedback control systems were investigated as means of controlling tailpipe gas temperature of a turbojet engine during transient operation in the high-speed region. Proportional-plus-integral control was used in both systems, but in the temperature-area control system it was necessary to add nonlinear components to the basic proportional-plus-integral control to provide satisfactory transient response to a desired step increase in temperature. Time … more
Date: March 1957
Creator: Hart, C. E.; Wenzel, L. M. & Craig, R. T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Experimental investigation of the forces and moments due to sideslip of a series of triangular vertical- and horizontal-tail combinations at Mach numbers of 1.62, 1.93, and 2.41

Description: Report presenting an experimental investigation at three Mach numbers of a series of tail combinations consisting of a triangular vertical tail attached symmetrically to a triangular horizontal tail to determine the lateral force, yawing moment, and rolling moment due to sideslip. The results indicated that the lateral-force derivative and yawing-moment derivative were predicted satisfactorily with the method used with the exception of when leading edges approach a sonic condition.
Date: March 1957
Creator: Coletti, Donald E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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