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Protective Equipment Evaluation Program Quarterly Progress Report: July-September 1951

Description: This quarterly progress details the ongoing work of the Protective Equipment Evaluation Program at the Oak Ridge National Laboratory. Topics discussed include aerosol generation, penetration studies, particle size measurement, and an appendix with analytical methods.
Date: August 6, 1952
Creator: Struxness, E. G.
Partner: UNT Libraries Government Documents Department
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Metallurgy Division Quarterly Progress Report for Period Ending July 31, 1951

Description: Technical report outlining the effect of strain rate on the tensile properties of thorium. It has been found that the yield strength increases slightly with increasing strain rate, and that tensile strength increases but to a less extent. Studies on the fabrication of thorium by extrusion and drawing have continued, as have studies on the extrusion cladding of thorium and uranium with zirconium. [From Summary}
Date: February 6, 1952
Creator: Miller, E. C. & Bridges, W. H.
Partner: UNT Libraries Government Documents Department
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Technical activities report: Graphite Studies Group, February 1952

Description: Monthly activities for the following studies are given: (1) pile graphite monitoring; (2) graphite burnout and chemical studies; (3) graphite physical properties studies; (4) controlled temperature exposure; (5) thermal conductivity of gases; (6) damage mechanism study; (7) special exposures; and (8) experimental graphite program.
Date: March 6, 1952
Creator: Bupp, L. P.
Partner: UNT Libraries Government Documents Department
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Performance Parameters Pertinent to Nuclear Powered Aircraft

Description: A review of the present design information and studies relating to nuclear power plants indicates that the weight of the power plant components, exclusive of crew shield and nacelles, may at a particular design point be represented by an equation of the form, W{subpp} = W{subo} + K{subt}T. By use of this, a power plant parameter psi is defined as the ratio of the part of the power plant plus nacelle weight that varies with thrust to the net thrust of the power plant less nacelle drag. The fun… more
Date: February 6, 1952
Creator: Ruffman, B.F.
Partner: UNT Libraries Government Documents Department
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Cyclotron Component Design Technical Reports

Description: From introduction: The study of cyclotron-magnet design presented here is directed toward attaining a large ratio of energy in the ion beam with respect to cost. Alternatively, the goal may be regarded as a smaller, more convenient apparatus. These two objectives are not completely incompatible; a design that is more economical than the usual is also smaller. The best design of a cyclotron can be obtained only by considering the problem as a whole. The conditions necessary to maintain an ion be… more
Date: February 6, 1952
Creator: Foss, M. H.
Partner: UNT Libraries Government Documents Department
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Electrical Techniques for Compensation of Thermal Time Lag of Thermocouples and Resistance Thermometer Elements

Description: Note presenting a description of basic electrical networks that compensate for the thermal time lag of thermocouple and resistance thermometer elements used in combustion research and in the control of jet power plants. The measurement or the detection of rapid temperature changes by use of such elements can thereby be improved.
Date: May 6, 1952
Creator: Shepard, Charles E. & Warshawsky, Isidore
Partner: UNT Libraries Government Documents Department
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Experimental Investigation of the Effects of Vortex Generators on the Maximum Lift of a 6-Percent-Thick Symmetrical Circular-Arc Airfoil Section

Description: Report discussing testing in the low-turbulence tunnel to determine the effectiveness of several configurations of vortex generators in increasing maximum lift of a 6-percent-thick symmetrical circular-arc airfoil section. None of the configurations tested were found to greatly increase the lift. Some of the configurations tested included a single row of vortex generators, two rows of generators, larger vortex generators, and sweeping forward the front row of generators.
Date: October 6, 1952
Creator: Bursnall, William J.
Partner: UNT Libraries Government Documents Department
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Rocket-Model Investigation to Determine the Force and Hinge-Moment Characteristics of a Half-Delta Tip Control on a 59 Degree Sweptback Delta Wing Between Mach Numbers of 0.55 and 1.43

Description: Report presenting a free-flight investigation of a rocket-powered control research model to determine the force and hinge-moment characteristics of a half-delta tip control on a delta wing. Results regarding the control hinge moments, control normal force, and total normal force are provided.
Date: October 6, 1952
Creator: Martz, C. William; Church, James D. & Goslee, John W.
Partner: UNT Libraries Government Documents Department
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Investigation of the drag of various axially symmetric nose shapes of fineness ratio 3 for Mach numbers from 1.24 to 3.67

Description: Report presenting foredrag measurements made at zero angle of attack for a series of fineness ratio 3 nose shapes. The types of noses investigated included theoretically derived minimum drag shapes, hemispherically blunted cones, and other more common profiles. Results regarding hemispherically blunted cones, theoretical minimum drag nose shapes, and comparison of foredrag of all the force models are provided.
Date: November 6, 1952
Creator: Perkins, Edward W. & Jorgensen, Leland H.
Partner: UNT Libraries Government Documents Department
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Effect of fuel properties on carbon deposition in atomizing and prevaporizing turbojet combustors

Description: Report presenting investigations of the effects of fuel properties on combustion-chamber carbon deposition in singe tubular fuel-atomizing and fuel-prevaporizing combustors. The NACA K factor and the smoking tendency were approximately equally effective in relating carbon-deposition data from the prevaporizing and atomizing combustors. Results regarding the K factor, smoking tendency, effect of prevaporizing combustor operating conditions, sulfur, gum, and olefin, are provided.
Date: June 6, 1952
Creator: Wear, Jerrold D. & Cook, William P.
Partner: UNT Libraries Government Documents Department
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Preliminary Tank Tests of Some Hydro-Ski-Wheel Combinations in the Planing Condition

Description: Report presenting an investigation of the planing characteristics of various combinations of a wheel and a hydro-ski. Models tested included at least two values of the following parameters: diameter of wheel, width of wheel, cross-section shape of wheel, fore-and-aft location of wheel, lateral location of wheel, gap between wheel and ski, rotation of wheel, and protrusion of wheel. Results regarding the general effect of a wheel, effect of wheel shape and size, effect of wheel-ski arrangement, … more
Date: October 6, 1952
Creator: Land, Norman S. & Fontana, Rudolph E.
Partner: UNT Libraries Government Documents Department
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A preliminary gust-tunnel investigation of leading-edge separation on swept wings

Description: Report presenting the results of a series of qualitative studies with tufts on three wings with sweepback angles of 30 degrees, 45 degrees, and 60 degrees, which show that under certain conditions, a leading-edge vortex can exist in the unsteady flow associated with a gust. The results indicated that if a wing in steady flight prior to entering a gust is at an angle of attack several degrees less than that at which vortex flow first begins in steady flow, it may penetrate the gust without havin… more
Date: June 6, 1952
Creator: Cahen, George L.
Partner: UNT Libraries Government Documents Department
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Altitude performance investigation of two flame-holder and fuel-system configurations in short afterburner

Description: From Introduction: "The results of this complete evaluation of the altitude performance and operational characteristics of the two types of flame-holder and fuel-system configurations are reported herein.The starting limits of both configurations at a flight Mach number of 0.6 are also discussed."
Date: May 6, 1952
Creator: Huntley, S. C. & Wilsted, H. D.
Partner: UNT Libraries Government Documents Department
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Effect of Fuel-Air Distribution on Performance of a 16-Inch Ram-Jet Engine

Description: Report presenting an investigation of the effect of combustion on diffusion in the fuel preparation zone of a ram-jet engine. The information was applied in the design of combustor to operate at lean fuel-air ratios.
Date: June 6, 1952
Creator: Cervenka, A. J. & Dangle, E. E.
Partner: UNT Libraries Government Documents Department
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Experimental Investigation of Internal Flow Characteristics of Forward Underslung Fuselage Scoops With Unswept Entrances at Mach Numbers of 1.41 to 1.96

Description: Report presenting an investigation of two versions of a type of forward underslung scoop mounted on a pointed fuselage in the supersonic blowdown tunnel. The scoop entrances were in the shape of a 60 degree sector of an annulus, but the sides of one scoop were sweptback, while the others were unswept. Results regarding the shadowgraphs and surface-pressure distributions and total-pressure recovery are provided.
Date: March 6, 1952
Creator: Boswinkle, Robert W., Jr. & Mitchell, Meade H., Jr.
Partner: UNT Libraries Government Documents Department
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Transonic Flight Tests to Compare the Zero-Lift Drags of 45 Degree Sweptback Wings of Aspect Ratio 3.55 and 6.0 With and Without Nacelles at the Wing Tips

Description: Report presenting tests of rocket-propelled models at transonic speeds to compare the zero-lift drags of 45 degree sweptback wings with and without solid nacelles at the wing tips. The wing drag coefficient was lowered at high subsonic and supersonic speeds when the aspect ratio was reduced from 6.0 to 3.55. Results regarding the favorability of the wing-tip nacelles and the force-break Mach number of the varying configurations are also provided.
Date: March 6, 1952
Creator: Hoffman, Sherwood & Mapp, Richard C., Jr.
Partner: UNT Libraries Government Documents Department
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Performance and operational characteristics of a python turbine-propeller engine at simulated altitude conditions

Description: "The performance and operational characteristics of a Python turbine-propeller engine were investigated at simulated altitude conditions in the NACA Lewis altitude wind tunnel. In the performance phase, data were obtained over a range of engine speeds and exhaust nozzle areas at altitudes from 10,000 to 40,000 feet at a single cowl-inlet ram pressure ratio; independent control of engine speed and fuel flow was used to obtain a range of powers at each engine speed. Engine performance data obtain… more
Date: February 6, 1952
Creator: Meyer, Carl L. & Johnson, LaVern A.
Partner: UNT Libraries Government Documents Department
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Preliminary investigation of the heat shock resistant properties of molybdenum disilicide blades under centrifugal load

Description: An investigation to determine the heat-shock resistant properties of two molybdenum disilicide turbine blades under centrifugal loads imposed by turbine rotation is presented. Molybdenum disilicide turbine blades fabricated by hot-pressing techniques withstood heat-shock conditions under blade centrifugal stresses up to 5350 pounds per square inch. Additional development is required before the heat-shock resistant properties of molybdenum disilicide are satisfactory for turbine-blade applicatio… more
Date: May 6, 1952
Creator: Long, Roger A. & Frenche, John C.
Partner: UNT Libraries Government Documents Department
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The effects of suction through porous leading-edge surfaces on the aerodynamic characteristics of a 47.5 degree sweptback wing-fuselage combination at a Reynolds number of 4.4 x 10(exp 6)

Description: A study investigated the effects of suction through porous leading-edge surfaces on the longitudinal aerodynamic characteristics of a 47.5 degree sweptback wing-fuselage configuration in the full-scale tunnel. The wing section normal to the quarter-chord line was NACA 64(sub 1)A112, the aspect ratio was 3.4, and the taper ratio was 0.51. Results regarding the basic wing characteristics and effect of area suction on the longitudinal characteristics are provided.
Date: March 6, 1952
Creator: Scallion, William I. & Pasamanick, Jerome
Partner: UNT Libraries Government Documents Department
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Displacement Effect of a Three-Dimensional Boundary Layer

Description: "A method is described for determining the "displacement surface" of known three-dimensional compressible boundary-layer flow in terms of the mass-flow defects associated with the profiles of the two velocity components parallel to the surface. The result is a generalization of the plane flow concept of displacement thickness introduced in order to describe how a thin boundary layer distorts the outer nonviscous flow. Numerical values are found for the known three-dimensional boundary-layer flo… more
Date: March 6, 1952
Creator: Moore, Franklin K.
Partner: UNT Libraries Government Documents Department
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Theoretical and experimental investigation of mufflers with comments on engine-exhaust muffler design

Description: Equations are presented for the attenuation characteristics of single-chamber and multiple-chamber mufflers of both the expansion-chamber and resonator types, for tuned side-branch tubes, and for the combination of an expansion chamber with a resonator. Experimental curves of attenuation plotted against frequency are presented for 77 different mufflers with a reflection-free tailpipe termination. The experiments were made at room temperature without flow; the sound source was a loud-speaker. A … more
Date: October 6, 1952
Creator: Davis, Don D., Jr.; Stokes, George M.; Moore, Dewey & Stevens, George L., Jr.
Partner: UNT Libraries Government Documents Department
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Eisenhower slugs

Description: No Description Available.
Date: November 6, 1952
Creator: Mars, H. L.
Partner: UNT Libraries Government Documents Department
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