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in creator/contributor: "United States. National Advisory Committee for Aeronautics."  
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Cooperative Investigation of Relationship Between Static and Fatigue Properties of Wrought N-155 Alloy at Elevated Temperatures

Description: Report presents the correlation of extensive data obtained relating properties of wrought N-155 alloy under static, combined static and dynamic, and complete reversed dynamic stress conditions. Time period for fracture ranged from 50 to 500 hours at room temperature, 1,000 degrees, 1,200 degrees, and 1,500 degrees F.
Date: June 15, 1953
Creator: NACA Subcommittee on Power-Plant Materials
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Survey of Portions of the Iron-Nickel-Molybdenum and Cobalt-Iron-Molybdenum Ternary Systems at 1200 Degrees C

Description: Note presenting a survey of the 1200 degrees Celsius isothermal sections of the iron-nickel-molybdenum and the cobalt-iron-molybdenum ternary systems. The phases occurring in the systems were identified by means of x-ray diffraction and by etching methods, and the phase boundaries at 1200 degrees Celsius were determined microscopically, using the disappearing phase method with quenched specimens. Results regarding the specific phases and phase diagrams are provided.
Date: February 1953
Creator: Das, Dilip K. & Beck, Paul A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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A Fundamental Investigation of Fretting Corrosion

Description: Note presenting a summary of all phases of an investigation of fretting corrosion that has been conducted over a period of several years. Part I describes a test machine for measuring fretting damage under controlled experimental conditions. Part II presents data for mild steel fretted against itself, with a number of characteristics taken into consideration. Part III suggest a mechanism for the fretting process.
Date: December 1953
Creator: Uhlig, H. H.; Feng, I. Ming; Tierney, W. D. & McClellan, A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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On the Development of Turbulent Wakes from Vortex Streets

Description: "Wake development behind circular cylinders at Reynolds numbers from 40 to 10,000 was investigated in a low-speed wind tunnel. Standard hotwire techniques were used to study the velocity fluctuations. The Reynolds number range of periodic vortex shedding is divided into two distinct subranges. At R = 40 to 150, called the stable range, regular vortex streets are formed and no turbulent motion is developed" (p. 1).
Date: March 1953
Creator: Roshko, Anatol
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Effect of processing variables on the transition temperature, strength, and ductility of high-purity, sintered, wrought molybdenum metal

Description: Report presenting an investigation of the effect of processing variables on the properties of sintered, wrought molybdenum. The amount of swaging, recrystallization, and stress-relieving were considered.
Date: March 1953
Creator: Dike, Kenneth C. & Long, Roger A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Condensation Line of Air and the Heats of Vaporization of Oxygen and Nitrogen

Description: "The condensation pressure of air was determined over the range of temperature from 60 to 85 K. The experimental results were slightly higher than the calculated values based on the ideal solution law. Heat of vaporization of oxygen was determined at four temperatures ranging from about 68 to 91 K and of nitrogen similarly at four temperatures ranging from 62 to 78 K" (p. 1).
Date: June 1953
Creator: Furukawa, George T. & McCoskey, Robert E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Physical Properties of Concentrated Nitric Acid

Description: Note presenting a review of the data existing in the literature and experimental measurements made in order to obtain the physical properties of white fuming nitric acid. The main object of the investigation was to obtain reliable values of the thermal properties of concentrated nitric acid for use in correlating the data obtained in heat-transfer research and in fluid-friction-characteristics investigations.
Date: June 1953
Creator: Sibbitt, W. L.; St. Clair, C. R.; Bump, T. R.; Pagerey, P. F.; Kern, J. P. & Fyfe, D. W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Relation Between Roughness of Interface and Adherence of Porcelain Enamel to Steel

Description: Note presenting porcelain-enamel ground coats, which were prepared and applied under conditions that gave various degrees of adherence between enamel and a low-carbon steel. This study was primarily undertaken to find out additional information on the mechanism of adherence of porcelain-enamel ground coats to iron.
Date: April 1953
Creator: Richmond, J. C.; Moore, D. G.; Kirkpatrick, H. B. & Harrison, W. N.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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An analysis of the factors affecting the loss in lift and shift in aerodynamic center produced by the distortion of a swept wing under aerodynamic load

Description: From Introduction: "The importance of this aeroelastic phenomenon has been recognized for some time, and several investigators have developed more or less refined methods for analysis of wing elastic distortions and their effects. (For examples, see refs. 1 to 4.) More specific evidence as to the influence of wing external geometry (in conjunction with flight condition) on this flexibility-longitudinial-stability problem would appear to be of interest to the aerodynamicist, however, so that he … more
Date: March 1953
Creator: Mathews, Charles W. & Kurbjun, Max C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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A Method for Stabilizing Shock Waves in Channel Flow by Means of a Surge Chamber

Description: Note presenting a method based on mass removal from the channel by means of a surge chamber in order to stabilize normal shock waves in channel flow against the effect of disturbances originating downstream in a blowdown-type wind tunnel. The results of experimental tests were in quantitative agreement with the theoretical analysis.
Date: June 1953
Creator: Neice, Stanford E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Some Exact Solutions of Two-Dimensional Flows of Compressible Fluid With Hodograph Method

Description: Note presenting a suggestion for classifying the compressible potential flows according to the location and number of singularities in the subsonic region of the hodograph plane, which seems to offer a convenient criterion for systematic investigation of these flows with Chaplygin's original method. The primary object of the paper is to present and analyze a few useful solutions of compressible potential flow with the exact gas law.
Date: February 1953
Creator: Chang, Chieh-Chien & O'Brien, Vivian
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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On the Stability of the Laminar Mixing Region Between Two Parallel Streams in a Gas

Description: Note presenting a study of the stability of the mixing of two streams both for the interest in the problem and for clarifying certain points in the basic stability theory. Results show that when the relative speed of the two parallel streams exceeds the sum of their velocities of sound, subsonic oscillations cannot occur and the mixing region can be expected to be stable with respect to small disturbances.
Date: January 1953
Creator: Lin, C. C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Column Strength of H-Sections and Square Tubes in Postbuckling Range of Component Plates

Description: Note presenting a calculation of the column buckling stress in the range where the component plates have buckled using the method of split rigidities. Tests were carried out for a considerable range of slenderness ratios on three H-sections and two square tube sections.
Date: August 1953
Creator: Bijlaard, P. P. & Fisher, G. P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Analysis of Multicell Delta Wings on Cal-Tech Analog Computer

Description: "The main purpose of this paper is to present the results of measurements made on the Cal-Tech computer. The diagrams present only a small portion of the data which were obtained from the computer and which are given in complete form in the tables" (p. 1-2).
Date: December 1953
Creator: MacNeal, Richard H. & Benscoter, Stanley U.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Reaction processes leading to spontaneous ignition of hydrocarbons

Description: Report presenting testing of the vapor-oxidation of iscooctane at 550 degrees Celsius under conditions leading to rapid quenching of the reaction yielding hydrogen peroxide, diiosbutylene, and isobutylene as the major reaction products. Results regarding isooctane, n-Heptane, 2,2,5-Trimethylhexane, isobutane, and hydrogen-peroxide formation are provided.
Date: June 1953
Creator: Frank, Charles E. & Blackham, Angus U.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Investigation of the Statistical Nature of the Fatigue of Metals

Description: Note presenting an investigation which utilized the statistical methods developed in previous research to study the scatter found in aluminum alloys and the effect of the morphology of the carbide phase on the scatter in a eutectoid steel. The scatter in fatigue life for 24S and 75S aluminum was found to be comparable with that reported previously for steel.
Date: September 1953
Creator: Dieter, G. E. & Mehl, R. F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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A Method for Calculating the Subsonic Steady-State Loading on an Airplane With a Wing of Arbitrary Plan Form and Stiffness

Description: Note presenting a method for computing the steady-state span load distribution on an elastic airplane wing for specified airplane weights and load factors. The method is based on a modification of the Weissinger L-method and applies at subcritical Mach numbers.
Date: December 1953
Creator: Gray, W. L. & Schenk, K. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Investigation of Lateral Control Near the Stall: Flight Investigation With a Light High-Wing Monoplane Tested With Various Amounts of Washout and Various Lengths of Leading-Edge Slot

Description: Note presenting flight tests made with a typical light airplane to investigate possibilities for obtaining reliable control at low flight speeds. An attempt was made to find a configuration that would provide sufficient elevator control for a three-point landing under the most critical condition and that would also have insufficient elevator control to exceed the angle of attack at which reliable lateral control is obtained in flight under all of the center-of-gravity and power conditions.
Date: May 1953
Creator: Weick, Fred E.; Sevelson, Maurice S.; McClure, James G. & Flanagan, Marion D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Reflection of Weak Shock Wave From a Boundary Layer Along a Flat Plate 2: Interaction of Oblique Shock Wave With a Laminar Boundary Layer Analyzed by Differential-Equation Method

Description: Note presenting an investigation of the interaction of an oblique shock with a laminar boundary layer in a compressible supersonic stream. This report is a complement to previous report and uses the differential equation method.
Date: January 1953
Creator: Kuo, Yung-Huai
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Power-off flare-up tests of a model helicopter rotor in vertical autorotation

Description: Report presenting the results of an experimental investigation of the problem of reducing the descending velocity of a helicopter model in steady vertical autorotation by expending the kinetic energy of the rotor in a collective-pitch flare. Test data were obtained over a wide range of operating conditions from a freely falling model rotor restrained laterally by a guide wire. Results regarding justification of initial conditions, effect or rate of change of blade pitch angle, effect of final b… more
Date: January 1953
Creator: Slaymaker, S. E. & Gray, Robin B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The zero-lift drag of a slender body of revolution (NACA RM-10 research model) as determined from tests in several wind tunnels and in flight at supersonic speeds

Description: Presents zero-lift drag data of an NACA RM-10 slender body of revolution with and without stabilizing fins attached. The results from several wind tunnels and in flight are compared. The results cover a Reynolds number range from about 1 time 10 to the 6th power to 40 times 10 to the 6th power for the flight models. The Mach numbers covered include 1.5 to 2.4 in the wind tunnels and 0.85 to 2.5 in flight.
Date: April 1953
Creator: Evans, Albert J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Creep of Single Crystals of Aluminum

Description: The creep of single crystals of high-purity aluminum was investigated in the range of temperatures from room temperature to 400 F and at resolved-shear-stress levels of 200, 300, and 400 psi. The tests were designed in an attempt to produce data regarding the relation between the rate of strain and the mechanism of deformation. The creep data are analyzed in terms of shear strain rate and the results are discussed with regard to existing creep theories.
Date: May 1953
Creator: Johnson, R. D.; Shober, F. R. & Schwope, A. D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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