Technical Report Archive & Image Library (TRAIL) - 1,410 Matching Results

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Matching of Auxiliary Inlets to Secondary-Air Requirements of Aircraft Ejector Exhaust Nozzles

Description: Report presenting an analysis of the problems associated with matching secondary-air requirements of ejector exhaust nozzles and auxiliary inlets has been made for free-stream Mach numbers up to 2.0. The analysis indicated that inlets located in the free stream supply higher pressure recovery than ejectors generally require for optimum net internal thrust at Mach numbers above about 1.4. Net-thrust gains can be achieved by immersing the auxiliary inlet in a boundary layer where the inlet-moment… more
Date: August 16, 1955
Creator: Hearth, Donald P.; Englert, Gerald W. & Kowalski, Kenneth L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Mathematics Panel Semiannual Progress Report

Description: From July through December, a total of 1750 hr of computer time was used by programmers in "debugging" and in running problems. With the acquisition of a second operator, the evening shift was initiated. A night-shift operator is presently being trained, and third-shifts operations will probably begin after completion of the magnetic-tape memory. / Engineering time is regularly scheduled for 4 hr each morning and 1/2 hr late in the afternoon. An electronic technician is on duty during evening-s… more
Date: March 2, 1955
Creator: Householder, A. S. & Sangren, W. C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Maximum Theorems and Reflections of Simple Waves

Description: Note presenting the solutions corresponding to the reflection of a centered simple wave along a straight wall and along a free streamline of constant pressure in mathematical terms and expressed in terms of a Fourier transform. The solutions are found to be simply reflated to some important solutions arising in the theory of linear partial differential equations.
Date: June 1955
Creator: Germain, P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Measured Effective Thermal Conductivity of Uranium Oxide Powder in Various Gases and Gas Mixtures

Description: Memorandum presenting an investigation of the effective thermal conductivities of powders, which included uranium oxide UO(sub 2) powder with a density of 59.5 percent of the density of the solid uranium oxide at a range of temperatures. Helium, argon, and nitrogen gases and mixtures of helium-argon and xenon-krypton gases were introduced into the powder void, and the experimental effective thermal conductivities of the gas-powder mixtures were determined.
Date: March 3, 1955
Creator: Boegli, J. S. & Deissler, R. G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Measurement and Analysis of Wing and Tail Buffeting Loads on a Fighter Airplane

Description: "The buffeting loads measured on the wing and tail of a fighter airplane during 194 maneuvers are given in tabular form, along with the associated flight conditions. Measurements were made at altitudes of 30,000 to 10,000 feet and at speeds up to a Mach number of 0.8. Least-squares methods have been used for a preliminary analysis of the data. The agreement between the results of this analysis and the loads measured in stalls is sufficiently good to suggest the examination of the buffeting of o… more
Date: 1955
Creator: Huston, Wilber B. & Skopinski, T. H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Measurement of Respiratory C14O2 Activities

Description: We describe in this technical report a reasonably simple, easily constructed, system that allows the collection of time-course information regarding respiratory C14O2 with little special effort on the part of the investigator. The method described is centered around a small metabolism cage for the animal and a novel technique for counting C14O2. In essence, an air steam containing C14O2 is brought part the window of a think end window G.M. tube contained in a lead shield. activity detected by t… more
Date: 1955
Creator: Bruggen, J. T. van, 1913-1989 & Hutchens, Tyra T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Measurements of Bâ‚„C and Hâ‚‚O Shield in the Lid Tank : Experiment 11

Description: The following report measures neutrons and gammas in solid B4C, as well as measuring H2O containing .5% boron by weight in the lid tank. Quantities measured in the following report in borated water are: thermal neutron distribution along the center line of the source (Z); fast neutron dose vs. Z; Gamma dose vs. Z; and neutron absorption by boron within solid B4C.
Date: November 30, 1955
Creator: Blizard, E. P. & Clifford, C. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Measurements of free-space oscillating pressures near a propeller at flight Mach numbers to 0.72

Description: Report presenting a series of measurements at three stations of the oscillating pressures near the propeller at flight Mach numbers up to 0.72. The measurements were made at a single radial station and three axial positions. Results regarding effect of engine speed at constant flight Mach number and power and effect of flight Mach number at constant engine speed and power are provided.
Date: May 1955
Creator: Vogeley, Arthur W. & Kurbjun, Max C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Measurements of the effect of trailing-edge thickness on the zero-lift drag of thin low-aspect-ratio wings

Description: Report presenting an exploratory free-flight investigation at zero lift of several rocket-powered drag-research models with tapered 4-percent-thick wings for a range of Mach numbers. Results regarding the total-drag coefficient, wing drag coefficients, and drag-coefficient components are provided.
Date: November 1955
Creator: Morrow, John D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Measurements of the effects of finite span on the pressure distribution over double-wedge wings at Mach numbers near shock attachment

Description: Report presenting results of wind-tunnel measurements of the pressure distribution at low supersonic speeds on two rectangular wings of double-wedge section and aspect ratios 2 and 4. The pressure-drag coefficient at zero lift is found to decrease with decrease in aspect ratio at all values of the test Mach number. The effect was found to be most pronounced at Mach numbers at which the shock wave is detached.
Date: September 1955
Creator: Vincenti, Walter G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Measurements of Turbulent Skin Friction on a Flat Plate at Transonic Speeds

Description: Note presenting the design and construction of a floating-element skin-friction balance. The instrument was applied to measurements of local skin friction in the turbulent boundary layer of a smooth flat plate at high-subsonic Mach numbers and supersonic Mach numbers up to 1.75.
Date: September 1955
Creator: Hakkinen, Raimo J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Mechanical and Physical Properties of Uranium: Chapter 8 of Nuclear Metallurgy Lectures

Description: A knowledge of the mechanical and physical properties of uranium is important in understanding and explaining its pile behavior. The effects of irradiation on the properties of uranium will be dealt with in another chapter. However, it is important to know and understand the pre-irradiation properties of uranium prior to investigating the effects of irradiation.
Date: May 10, 1955
Creator: Rueschen, R. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Mechanical Properties of Beta-Quenched Uranium at Elevated Temperatures

Description: The creep strength and tensile properties-were determined in vacuum for beta-quenched, derby uranium. The stresses to produce a secondary creep rate of- 0.0001 per cent per hr at 100, 250, 400, and 500 deg C were 48,000, sile strengths were 114,500, 35,100, 11,100, and 8,500 psi at temperatares of 28, 300, 500, and 700 deg C, respectively. The creep and tensile strengths decrease quite rapidly with increasing temperature in the temperatare range 250 to 400 deg C.
Date: September 6, 1955
Creator: Shober, Frederic R.; Marsh, Lyle L. & Manning, G. K.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Media for Air Cleaning and Air-Assay Purposes : Final Summary Report for Period Ending December 31, 1954

Description: Work was completed on the high-temperature, high efficiency air filter. Technical assistance was given at a large-scale, privately financed run of an all-glass medium. Full-size filers have been produced in quantity and are offered by manufacturers; it is considered that commercial manufacture has been established. A survey was made of air sampling practices at 37 laboratories. Analysis of the survey results indicated that 22 different kinds of air-sampling filer media were in use among the lab… more
Date: October 3, 1955
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Metal-Bonding Adhesives for High-Temperature Service

Description: Report presenting the results of an investigation to develop a metal-bonding adhesive with improved heat-resistant properties. The most promising results were obtained with a formulation of a phenol resin and epoxy resin with certain heat stabilizers and catalysts. Results regarding the strength of bonds, resistance of adhesives to aging, and heat-resistant properties are provided.
Date: July 28, 1955
Creator: Black, John M. & Blomquist, R. F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Metallography of Aluminum and Its Alloys: Use of Electrolytic Polishing

Description: Recent methods are described for electropolishing aluminum and aluminum alloys. Numerous references are included of electrolytic micrographic investigations carried out during the period 1948 to 1952. A detailed description of a commercial electrolytic polishing unit, suitable for micrographic examination of aluminum and its alloys, is included.
Date: November 1955
Creator: Jacquet, Pierre A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Metallurgical Examination of Resistance Thermometer Elements - Rear Face 100-K and Prototype Units 100-H Areas

Description: A metallurgical examination of several resistance thermometers for 105-KW were examined before startup (1). This examination revealed that the silver brazes joining the type 305 stainless steel blades to the type 416 stainless steel nuts were defective. The braze metal did not penetrate into the joint; the brazes were porous and appeared to be inadequately bonded to the type 416 nuts. After startup of KW, many of the thermometers became inoperative, and several were visually examined to determi… more
Date: April 18, 1955
Creator: Reed, Lewis S.; Hartcorn, L. A. & Smith, W. R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Metallurgical Examination of Resistance Thermometer Elements Removed from 105 KW and KE Areas

Description: This examination was conducted primarily to determine the extent of corrosion existing between the silver bearing alloy and the type 416 stainless steel nut of K reactor units subjected to service conditions and also to establish irrevocably that metallurgical defects exist in the brazes.
Date: June 6, 1955
Creator: Hartcorn, L. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Meteorological Problems Associated With Commercial Turbojet-Aircraft Operation

Description: Memorandum presenting an analysis and evaluation of the meteorological requirements and problems anticipated with the operation of commercial turbojet aircraft. Discussions concerning problems of temperature, wind, pressure, ceiling, visibility, cloud and clear-air turbulence, icing, and communication are included in this study.
Date: June 21, 1955
Creator: Working Group of the NACA Subcommittee on Meteorological Problems
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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A Method for Determining the Composition of Methanol-Trimethyl Borate Mixtures

Description: A study of mixtures of pure methanol and trimethyl borate showed that the composition can be accurately obtained by a simple density determination. The refractive-index determination gives the composition with much less accuracy. The potentiometric titration of boric acid is also discussed.
Date: November 3, 1955
Creator: Kaye, Samuel & Sordyl, Frank
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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A method for evaluating the loads and controllability aspects of the pitch-up problem

Description: Report presenting a procedure for estimating the range of peak airplane load factors and maneuvering tail loads likely to be experienced in pitch-up maneuvers. Results of computations indicated that though the load factors and maneuvering tail loads were not critical in pitch-up maneuvers at 35,000 feet, they were likely to exceed design levels at 15,200 feet.
Date: August 23, 1955
Creator: Sadoff, Melvin; Matteson, Frederick H. & Havill, C. Dewey
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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A Method for Monochromatizating and Precise Point Focusing of X-Rays and its Application in Low Angle Diffraction Studies

Description: A principle for bending crystals with a minimum of strain so that they will focus x-rays and gamma-rays accurately to a point is explained. Detailed calculations are made of the aberrations in the foci resulting from various applications of the principle. the application of the principle in making a point focusing monochromator for low angle x-ray diffraction studies is discussed, and theoretical and experimental determinations of the reflection coefficient of the crystal are compared. A few ex… more
Date: April 1955
Creator: Berreman, Dwight Winton
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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