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An Analytical Investigation of the Effect of the Rate of Increase of Turbulent Kinetic Energy in the Stream Direction on the Development of Turbulent Boundary Layers in Adverse Pressure Gradients

Description: "The purpose of this paper is to provide a derivation of the general integral form of the boundary equation without neglecting the Reynolds normal-stress term. Two special cases of this equation are given explicitly" (p. 2).
Date: November 1953
Creator: Rashis, Bernard
Partner: UNT Libraries Government Documents Department
open access

Angular Distribution of 30.6 Mev Protons Elastically Scattered by Be, C, and Al

Description: The motivation for the measurement of the angular distribution of elastic scattering of medium energy protons and neutrons has been clearly presented by others. They have also listed the results obtained prior to their experiments at 31.5 Mev. This is a report on some results obtained with 30.6 Mev protons scattered from Be, C, and Al.
Date: November 1953
Creator: Wright, Byron T.
Partner: UNT Libraries Government Documents Department
open access

Application of Silver Chloride in Investigations of Elasto-Plastic States of Stress

Description: Note presenting a description of the use of silver chloride as a material for photoelastic stress analysis, which offers the possibilities of studying both elastic and plastic states of stress in a crystalline metallike material on either a microscale or macroscale. In order to use it, however, it is necessary to relate the stress state quantitatively with the observed relative retardation and extinction angle.
Date: November 1953
Creator: Goodman, L. E. & Sutherland, J. G.
Partner: UNT Libraries Government Documents Department
open access

A Discussion of the Metallurgical Aspects of Thorium as a Fuel Material

Description: Data on thorium are compiled and the use of thorium as a fuel material is discussed. It was assumed that the general reactor configuration will follow the conventional SGR-SRE reactor design of a graphite-moderated sodium-cooled metallic fuel system. Factors outlined which affect the use of thorium as a fuel material are availability of ore, capacity of processing plants, purity specifications, design and use of materials in fuel elements which may affect chemical separation economics, and tech… more
Date: November 1, 1953
Creator: Hayward, B. R.
Partner: UNT Libraries Government Documents Department
open access

Eddy-Current Inspection Methods : Trip Report - The Dr. Förster Institute, Reutlingen, Germany

Description: Abstract; Test instruments developed at the Dr. Förster Institute, Reutlingen, Germany, were considered for possible application to Savannah River nondestructive inspection problems involving stainless steel and aluminum tubing. None of the equipment can solve these problems without modifications. Several instruments are recommended for further study in connection with their use with aluminum tubing. None will be considered for use with stainless steel at this time."
Date: November 1953
Creator: McMillen, R. C.
Partner: UNT Libraries Government Documents Department
open access

Effect of a Rapid Blade-Pitch Increase on the Thrust and Induced-Velocity Response of a Full-Scale Helicopter Rotor

Description: From Summary: "A method has been proposed for predicting the effect of a rapid blade-pitch increase on the thrust and induced-velocity response of a helicopter rotor. General equations have been derived for the ensuing motion of the helicopter. These equations yield time histories of thrust, induced velocity, and helicopter vertical velocity for given rates of blade-pitch-angle changes and given rotor-angular-velocity time histories. The results of the method have been compared with experimenta… more
Date: November 1953
Creator: Carpenter, Paul J. & Fridovich, Bernard
Partner: UNT Libraries Government Documents Department
open access

Effect of Annealing Practice on the the Hydrogen Content of Uranium

Description: It was found that hydrogen is introduced into uranium during process-annealing in a fused salt bath. The increased hydrogen content reduces the tensile elongation and general formability of the metal. The partial removal could be affected by annealing in argon, helium, or nitrogen, and better by annealing in high vacuum at temperatures above 450°C. The effect of the hydrogen content on the tensile properties was confirmed by annealing in hydrogen. Tensile properties, the hydrogen content, and c… more
Date: November 1953
Creator: Waber, James T. (James Thomas), 1920-.
Partner: UNT Libraries Government Documents Department
open access

The Effect of Vertical Chine Strips on the Planing Characteristics of V-Shaped Prismatic Surfaces Having Angles of Dead Rise of 20 Degrees and 40 Degrees

Description: Report presenting an investigation of the effect of vertical chine strips on the planing characteristics of two prismatic surfaces having angles of dead rise of 20 degrees and 40 degrees. Wetted lengths, resistance, and center-of-pressure location were determined at speed coefficients up to 25.0, load coefficients up to approximately 80.0, and trims up to 30 degrees.
Date: November 1953
Creator: Kapryan, Walter J. & Boyd, George M., Jr.
Partner: UNT Libraries Government Documents Department
open access

Experimental Investigation of the Effects of Cooling on Friction and on Boundary-Layer Transition for Low-Speed Gas Flow at the Entry of a Tube

Description: Note presenting an investigation of the effect of cooling on boundary-layer transition in the steady flow of air in the entrance of a smooth round tube. The primary purpose was to investigate the practical possibilities of delaying the transition point, and thus increasing the transition Reynolds number, by cooling the laminar boundary layer in a gas. The results indicate that the effect of cooling on transition is not likely to be significant in any normal internal flow.
Date: November 1953
Creator: Kline, Stephen J. & Shapiro, Ascher H.
Partner: UNT Libraries Government Documents Department
open access

Experimental stress analysis of stiffened cylinders with cutouts: Pure torsion

Description: Torsion tests were made on a cylindrical semimonocoque shell of circular cross section. The cylinder was first tested without a cutout, and then with a rectangular cutout which was successively enlarged through six sizes varying from 30 degrees to 130 degrees in circumference and from 1 to 2 bays in length. Strain measurements were made with resistance-type wire strain gages near the cutout on the stringers, the skin, and the rings for each size of cutout, and the stresses obtained are presente… more
Date: November 1953
Creator: Schlechte, Floyd R. & Rosecrans, Richard
Partner: UNT Libraries Government Documents Department
open access

Gust loads and operating airspeeds of one type of four-engine transport airplane on three routes from 1949 to 1953

Description: Report presenting about 50,000 hours of V-G data obtained from one type of four-engine civil transport airplane operated over three different commercial airline routes of the United States from 1949 to 1953, which were analyzed to determine the magnitude and frequency of occurrence of gust loads and gusts. The frequency of occurrence of the gust loads and the gusts for the present operations is in general agreement with those from similar operations of other civil transports recently investigat… more
Date: November 1953
Creator: Walker, Walter G.
Partner: UNT Libraries Government Documents Department
open access

High-Frequency Pressure Indicators for Aerodynamic Problems

Description: Note presenting three different types of pressure indicators developed at the Massachusetts Institute of Technology. Each has a unique feature, but all are designed with an attempt to combine both high-frequency response and high resolving power into one instrument. Five different types of pressure receivers were tested, including the cylinder, flat-diaphragm, spherical-diaphragm, catenary-diaphragm, and stretched-diaphragm, or membrane types. The pressure indicators are dynamically calibrated … more
Date: November 1953
Creator: Li, Y. T.
Partner: UNT Libraries Government Documents Department
open access

Impingement of Water Droplets on NACA 65A004 Airfoil and Effect of Change in Airfoil Thickness from 12 to 4 Percent at 4 deg Angle of Attack

Description: From Summary: "The trajectories of droplets in the air flowing past an NACA 65A004 airfoil at an angle of attack of 4 deg were determined. The amount of water in droplet form impinging on the airfoil, the area of droplet impingement, and the rate of droplet impingement per unit area on the airfoil surface were calculated from the trajectories and presented to cover a large range of flight and atmospheric conditions. The effect of a change in airfoil thickness from 12 to 4 percent at 4 deg angle… more
Date: November 1953
Creator: Brun, Rinaldo J.; Gallagher, Helen M. & Vogt, Dorothea E.
Partner: UNT Libraries Government Documents Department
open access

Inspections performed by Du Pont on the telescope actuator system: Part 4

Description: Five telescope actuator systems designated as ``R``, ``P``, ``L``, ``K`` and ``C`` were fabricated at New York Ship. All five were similar in specifications except for minor detail. For overall assembly refer to du Pont arrangement drawings W-153422, W-153423, and W-153424. These drawings illustrate ``R`` unit; however, they are representative of all units. They show a complete listing of material required and an overall view of the telescoping assembly. Since jigs and special tooling were set … more
Date: November 1, 1953
Creator: Stewart, J. R.
Partner: UNT Libraries Government Documents Department
open access

Instability of a Pinched Fluid with a Longitudinal Magnetic Field

Description: The stability of a pinched plasma equilibrium with a longitudinal magnetic field superimposed on the characteristic azimuthal magnetic field of the pinch current is studied theoretically. The linearized solutions are developed as helical perturbations of the plasma surface, and the behavior of these is given for the different cases of uniform longitudinal, longitudinal field zero inside the plasma, and for helices of the same and opposite sense to the helix which describes the total magnetic fi… more
Date: November 1953
Creator: Kruskal, Martin D. (Martin David), 1925-2006 & Tuck, J. L.
Partner: UNT Libraries Government Documents Department
open access

Low-speed drag of cylinders of various shapes

Description: Report presenting an investigation to find the approximate variation of the drag coefficient with Reynolds number of several cylinders with different cross-sectional shapes. Data were obtained for circular cylinders, elliptical cylinders of two fineness ratios, rectangular and diamond cylinders of three fineness ratios, and two isosceles triangular cylinders.
Date: November 1953
Creator: Delany, Noel K. & Sorensen, Norman E.
Partner: UNT Libraries Government Documents Department
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