UNT Libraries Government Documents Department - 1,932 Matching Results

Search Results

prev Results: 97 - 120 next
open access

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
Item Type: Refine your search to only Report
open access

Analytical Studies of the Response to Longitudinal Control of Three Airplane Configurations in Landing Approaches

Description: Memorandum presenting a theoretical investigation to determine the reasons for poor airplane response to longitudinal control. Some effects of airplane configuration on the response, primarily for short time periods, were also determined. Results regarding a comparison of three airplanes, the effect of changes on airplane B, and the effect of changes on airplane C are provided.
Date: April 9, 1953
Creator: Bihrle, William, Jr. & Stone, Ralph W., Jr.
Item Type: Refine your search to only Report
open access

Analytical studies of the response to longitudinal control of three airplane configurations in landing approaches

Description: From Introduction: "A theoretical investigation was conducted in order to determine what effect the differences in aerodynamic characteristics would have on the short-time response to elevator control of this type of airplane as compared with the responses of a conventional airplane, without regard to any possible psychological influences. The results of this investigation are presented in this paper."
Date: April 9, 1953
Creator: Bihrle, William, Jr. & Stone, Ralph W., Jr.
Item Type: Refine your search to only Report
open access

Analytical study of blockage- and lift-interference corrections for slotted tunnels obtained by the substitution of an equivalent homogeneous boundary for the discrete slots

Description: From Introduction: "This paper will treat the problem in the suggested manner, beginning with the development of a suitable boundary condition to represent mathematically a homogeneous boundary which has the same flow characteristics, at a point in the flow sufficiently removed from the boundary as the actual physical boundary of alternate open and closed portions of the wall. Numerical results will be presented for circular tunnels with uniformly distributed around the circumference, for recta… more
Date: June 29, 1953
Creator: Davis, Don D., Jr. & Moore, Dewey
Item Type: Refine your search to only Report
open access

An analytical study of sideslip angles and vertical-tail loads in rolling pullouts as affected by some characteristics of modern high-speed airplane configurations

Description: From Introduction: "The rolling-pullout maneuver (any maneuver in which rolls occur during high g flight conditions) has been shown to be pertinent to design considerations from the standpoint of the loads produced on a vertical tail (refs. 1 to 3). In order to understand this problem better, the results of an analytical study of effects of large variations of some of the lateral-stability-derivative coefficients on the maximum angle of sideslip at first peak of its oscillation are presented in… more
Date: October 8, 1953
Creator: Stone, Ralph W., Jr.
Item Type: Refine your search to only Report
open access

An analytical study of the comparative performance of six air-induction systems for turbojet-powered airplanes designed to operate at Mach numbers up to 2.0

Description: Report presenting an extension of NACA RM A52C14 about inlet design and performance for Mach numbers of 1.5 to 2.0. A two-dimensional inviscid analysis is used to compare the performance of several types of inlets when used in conjunction with a turbojet engine with constant-volume air flow. Results regarding air delivery and air requirements, drag factors, evaluation of inlet performance, significance of the drag summation, and inlet and engine-matching considerations are provided.
Date: October 9, 1953
Creator: Watson, Earl C.
Item Type: Refine your search to only Report
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.
Item Type: Refine your search to only Report
open access

Angular Distribution of Fragments from Neutron-Induced Fission

Description: The angular distribution of fission fragments from the neutron-induced fission of several isotopes has been studied. Distributions were observed for thermal neutrons on U233 and U235, Lady Godiva leakage neutrons on U235 and U238, and 14 Mev neutrons on U233, U235, U238, Th232, and Np237. No anisotropy was observed for thermal neutron fission, whereas for Lady Godiva neutrons and 14 Mev neutrons the probability of fission along the axis of the neutron beam was determined to be higher than for f… more
Date: May 7, 1953
Creator: Brolley, John Edward, 1919- & Dickinson, W. C.
Item Type: Refine your search to only Report
open access

The Anodizing of Zirconium

Description: Five continuous coatings were produced on zirconium coupons using an anodizing technique. These layers appear to be quite adherent and not subject to visible or audible failure caused by flaxion of the basis metal, Their abrasion resistance, though not investigated thoroughly, appears to be moderately good.
Date: November 3, 1953
Creator: Ray, William E.
Item Type: Refine your search to only Report
open access

Application of a characteristic blade-to-blade solution to flow in a supersonic rotor with varying stream-filament thickness

Description: From Introduction: "A solution of the type of reference 2 is necessary to give the stream-sheet thickness and curvature for the blade-to-blade (S1 surface) solution considered in this report. The equations for the solution of the S1 surface of revolution are presented in reference 3. The purpose of the subject report is to continue the work of reference 3 by applying the method to a specific problem in order that the practicability of the method and the time involved in computing a solution may… more
Date: August 1953
Creator: Costilow, Eleanor L.
Item Type: Refine your search to only Report
open access

Application of several methods for determining transfer functions and frequency response of aircraft from flight data

Description: Report presenting an investigation of the methods of analyzing longitudinal frequency-response characteristics of aircraft. The methods considered are analysis of sinusoidal response, analysis of transient response to harmonic content through determination of the Fourier integral, and analysis of the transient through the use of least-squares solutions of the coefficients of an assume equation for the transient time or frequency response.
Date: September 1953
Creator: Eggleston, John M. & Mathews, Charles W.
Item Type: Refine your search to only Report
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.
Item Type: Refine your search to only Report
open access

Application of the Ewing Equation for Calculating Thermal Conductivity From Electrical Conductivity

Description: The usefulness of the Ewing equation for calculating the thermal conductivity of reactor metals and alloys from electrical resistance, specific heat, density, and atomic weight was investigated. The alloys investigated were Zircaloy-2, HSZA, Nb- 5.5 wt% V, Inconel, 18-8 stainless steel, and eutectic NaK. The Ewing equation was found to give calculated values with a degree of confidence similar to that of actual measured values. (auth)
Date: April 7, 1953
Creator: Powers, A. E.
Item Type: Refine your search to only Report
open access

Application of the mercury-catalyzed aluminum jacket dissolving technique to the Redox process

Description: The possible means of removing aluminum jackets from uranium slugs were considered before Hanford start-up in 1944, and have been considered at other sites for processing other types of slugs. The sodium hydroxide-sodium nitrate dissolution, which served well for Bismuth Phosphate plant operation was accepted for use in the Redox plant. The other means of jacket removal, namely, dissolving the jacket in nitric acid with the aid of mercury as a catalyst, has been adapted for use at Arco and offe… more
Date: December 11, 1953
Creator: Curtis, M. H.; Bradford, J. L. & Harmon, M. K.
Item Type: Refine your search to only Report
open access

An application of the method of characteristics to two-dimensional transonic flows with detached shock waves

Description: From Summary: "An application of the method of characteristics is presented which affords a means for determining the surface pressures for a class of two-dimensional airfoils of given nose shape and arbitrary rear part in a sonic or supersonic stream if surface pressure data are given for one member of the class. For engineering purposes, the method of characteristics may be replaced by a simple application of Prandtl-Meyer flow concepts. An explanation of the nonlinear force characteristics o… more
Date: March 1953
Creator: Harder, Keith C. & Klunker, E. B.
Item Type: Refine your search to only Report
Back to Top of Screen