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Theoretical analysis of linked leading-edge and trailing-edge flap-type controls at supersonic speeds

Description: Report presenting an analysis of the use of linked leading-edge and trailing-edge flap-type controls for the purpose of reducing hinge moments at supersonic speeds. A series of linked controls with supersonic leading and trailing edges on swept and unswept wings has been studied for several Mach numbers by use of the linearized theory of supersonic flows. Results regarding hinge moment and hinge-moment reduction and lift and rolling moment are provided.
Date: March 1956
Creator: Yates, E. Carson, Jr.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Theoretical Loss Relations for Low-Speed Two-Dimensional-Cascade Flow

Description: Note presenting a theoretical analysis of the relations between wake characteristics and total-pressure defect for the incompressible flow across a two-dimensional cascade of compressor blades. Results indicated that the total-pressure-loss coefficient for unseparated flow varied almost directly with the ratio of wake momentum thickness to blade chord length and with the solidity, and inversely with the cosine of the air outlet angle.
Date: March 1956
Creator: Lieblein, Seymour & Roudebush, William H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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A theoretical study of the aerodynamics of slender cruciform-wing arrangements and their wakes

Description: Report presenting a theoretical study of some cruciform-wing arrangements and their wakes by means of slender-body theory. The basic ideas of the theory are reviewed and equations are developed for the pressure, loadings, and forces on slender cruciform wings and wing-body combinations.
Date: March 1956
Creator: Spreiter, John R. & Sacks, Alvin H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Theoretical study of the lateral frequency response to gusts of a fighter airplane, both with controls fixed and with several types of autopilots

Description: Report presenting a theoretical approach to determine the lateral frequency response of a fighter airplane to side gusts and rolling gusts at a Mach number of 0.7 and an altitude of 30,000 feet. Frequency response and power spectral density were determined with the controls fixed and in combination with three different basic types of attitude autopilots.
Date: March 1956
Creator: Adams, James J. & Mathews, Charles W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Thermodynamic Properties of Gaseous Nitrogen

Description: Note presenting tables of thermal properties of molecular nitrogen that have been prepared in an NBS-NACA series and grouped together for convenient use. Some of the properties include the thermodynamic functions for the gas, both real and ideal, the transport properties for the gas, and the vapor pressure of the liquid and the solid.
Date: March 1956
Creator: Woolley, Harold W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Transient Behavior of Single-Phase Natural Circulation Water Loop Systems

Description: Report issued by the Argonne National Laboratory discussing single-phase water loop systems. As stated in the introduction, "the principal objective of this study was to determine the reliability of the calculations based upon numerical solutions of finite-difference energy and flow equations" (p. 9). This report includes tables, illustrations, and photographs.
Date: March 1956
Creator: Alstad, C. D.; Isbin, H. S.; Amundson, N. R. & Silvers, J. P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Uranium-Bearing Coal in the Central Part of the Great Divide Basin, Sweetwater County, Wyoming

Description: From abstract: Field work leading to this report was done by the U. S. Geological Survey for the Division of Raw Materials of the U. S. Atomic Energy Commission, Nearly 24 townships were mapped in the central part of the Great Divide Basin, Sweetwater County, Wyoming, Fourteen of these townships contain outcrops of uranium-bearing coal. Thirty coal beds were mapped, but only seven of them have uranium-bearing coal reserves as defined in this report.
Date: March 1956
Creator: Pipiringos, George N.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Uranium Occurrences in the Ambrosia Lake Area, McKinley County, New Mexico

Description: Introduction: The Ambrosia Lake area includes all of T. 14 N., R. 10 W., and portions of adjacent townships in McKinley County, approximately 20 miles north of Grants, New Mexico (fig. 1). Uranium was discovered in April, 1955, and extensive exploration drilling followed.
Date: March 1956
Creator: Young, Robert G. & Ealy, Gene K.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Wind-tunnel investigation of effects of fuselage cross-sectional shape, fuselage bend, and vertical-tail size on directional characteristics of nonoverlap-type helicopter fuselage models without rotors

Description: Report presenting a low-speed investigation in the stability tunnel to determine the directional stability characteristics of tandem nonoverlap-type helicopter fuselages without rotors. The investigation consisted of both bent and straight fuselages with either circular or elliptical cross sections and with two vertical-tail sizes.
Date: March 1956
Creator: Williams, James L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Wind Variability of Fall-Out Patterns

Description: The following report investigates part of the variability of the computed fall-out intensity patterns due to the variability of the winds, on the basis of winds from four Pacific shot days. An extreme case from Operation Sandstone is also considered.
Date: March 1956
Creator: Sherman, Leon
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Factors affecting flow distortions produced by supersonic inlets

Description: Report presenting the typical effects of flow distortions on turbojet-engine performance and how flow distortions can be reduced by reducing the distortion entering the inlet diffuser and by improving the amount of mixing that generally occurs in the subsonic diffuser. Sources of distortion in the supersonic inlet are described and steps are suggested that might be taken to reduce their effects.
Date: February 29, 1956
Creator: Piercy, Thomas G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Some aspects of supersonic inlet stability

Description: Report presenting the achievement of supersonic inlet stabilization for Mach numbers up to approximately 2.0 by careful consideration of the possible buzz-triggering conditions. Results regarding the inlet flow-stabilization techniques, variable-geometry techniques for stable flow regulation, and effect of turbojet engine on inlet stability are provided.
Date: February 29, 1956
Creator: Connors, James F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Zero-angle-of-attack performance of two-dimensional inlets near Mach number 3

Description: An extensive program was undertaken to investigate the effect of several geometric variables on the performance of two-dimensional inlets. This investigation included inlets having single-wedge, double-wedge, and isentropic compression ramps with various side-plate configurations and subsonic diffusers. The tests were conducted over a range of Reynolds number based on inlet height from 0.50 to 2.67(sup x)10(sup 6). Generally, the performance levels of the two-dimensional inlets were somewhat be… more
Date: February 29, 1956
Creator: Woollett, Richard R. & Connors, James F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Refractories for Continuous Reduction of Uranium

Description: Report presenting a study that evaluates various types of refractories for use in a refractory-lined vessel that would be used for continuous reduction of uranium tetrafluoride to uranium metal.
Date: February 27, 1956
Creator: Smalley, Allison K.; Hyde, Collin; Allison, Adrian G. & Duckworth, Winston Howard
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Tabulated pressure data for several flap-type trailing edge controls on a trapezoidal wing at Mach numbers of 1.61 and 2.01

Description: Report presenting an investigation at two Mach numbers for a range of Reynolds numbers to determine the pressure distributions at several spanwise stations for a series of 25.4-percent-chord trailing-edge controls on a trapezoidal wing with a 23 degree sweptback leading edge, aspect ratio of 3.1, and taper ratio of 0.4. The report contains the tabulated pressure data for the complete range of test variables.
Date: February 27, 1956
Creator: Lord, Douglas R. & Czarnecki, K. R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Determination of Trivalent Uranium in Fluoride Salt Mixtures by the Modified Hydrogen Evolution Method

Description: The hydrogen evolution method for the determination of uranium trifluoride which was developed by Manning, Miller and Rowan has been used for the determination of trivalent uranium in this laboratory for the past three years. The method has been applied to many different sample types supposedly pure UF3, mixtures of UF3 and UF4 and the large variety of mixtures of fluoride salts that have been investigated as possible nuclear fuels. These mixtures contained alkali metal, beryllium and zirconium… more
Date: February 26, 1956
Creator: White, J. C.; Meyer, A. S., Jr.; Vaughan, W. F.; Ross, W. J. & Manning, D. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Chemical Separation of Isotopes Section Semiannual Progress Report for Period Ending June 30, 1955

Description: The countercurrent gas-liquid system BF3(g)—anisole·BF3(l) for the concentration of boron isotopes has been studied. The single-storage separation factor varies from 1.039 at 0°C to 1.029 at 30°C. Rate of exchange is rapid, and, with efficient contacting equipment, complete exchange may be obtained in less than 15 sec. A total separation of 1.525 has been realized in laboratory equipment. The critical-product reflux reaction is quite efficient. Only about 55 moles of BF3 remain in each million … more
Date: February 23, 1956
Creator: Clewett, G. H. & Drury, J. S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Investigation at Mach numbers of 1.41, 1.61, and 1.82 of two variable-geometry inlets having two-dimensional compression surfaces

Description: Report presenting one-tenth-scale models of two inlet configurations of fighter-type aircraft have been tested in the 4- by 4-foot supersonic pressure tunnel. The pressure-recovery and force characteristics of the inlets were determined as a function of mass-flow ratio, angle of inlet compression, angle of attack, and Mach number.
Date: February 23, 1956
Creator: Hasel, Lowell E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Oscillating hinge moments and flutter characteristics of a flap-type control surface on a 4-percent-thick unswept wing with low aspect ratio at transonic speeds

Description: Report presenting free-oscillation tests to determine the dynamic hinge-moment characteristics of a trailing-edge flap-type control surface on a 4-percent-thick unswept wing with low aspect ratio. Tests were made over a range of Mach numbers, reduced frequencies, and low test speeds. Results regarding the effects of wing motion, damping moment and flutter characteristics, spring moments, and theoretical results are provided.
Date: February 23, 1956
Creator: Thompson, Robert F. & Moseley, William C., Jr.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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