31 Matching Results

Search Results

Results: 1 - 24 next
open access

Higher Resolution Neutron Velocity Spectrometer Measurements of Enriched Uranium

Description: The slow neutron transmission of a sample of enriched uranium containing 3.193 gm/cm{sup2} has been investigated with a resolution width of 1 microsec/m (1 microsec/m is the full width of the triangular resolution function at the base) and with points spaced 1/3 microsec/m. The results of these transmission measurements are shown in Fig. 1. The solid line represents the new measurements while the dashed line represents the previous measurements (CUD-4) on this sample using a resolution width of… more
Date: August 9, 1950
Creator: Havens, W. W., Jr. & Rainwater, L. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

A history of startup and operations of the 234-5 facility during the year 1949

Description: It is desired at this time to present in summary form a factual history of the Building 234-5 operations, encompassing not only the immediate pre-start-up period from April to July, 1949, but including the major obstacles encountered in the succeeding interval to the end of 1949. This report is intended to serve not only as a review of 234-5 operations during this period but also as a documentary evidence of the difficulties experienced and the manner in which they impeded the start-up. This re… more
Date: February 9, 1950
Creator: Bell, R.S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Preliminary Investigation of Reflections of Oblique Waves from a Porous Wall

Description: "A porous wall was used in an attempt to eliminate reflections of oblique waves from a tunnel wall. Calculations were made of the required resistance characteristics of a wall in order that the flow through the wall, due to the pressure difference across a shock wave, would equal the component normal to the wall of the flow behind the shock wave. The resistance characteristic of a sintered bronze wall was measured and the reflections of waves impinging on the wall were observed at a Mach number… more
Date: November 9, 1950
Creator: Davis, Don D., Jr. & Wood, George P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Aeronautical study of a wing-fuselage combination employing a wing swept back 63 degrees: Characteristics at supersonic speeds of a model with the wing twisted and cambered for uniform load

Description: Report presenting the lift, drag, and pitching-moment characteristics of a wing-fuselage combination employing a wing with the leading edge swept back 63 degrees and cambered and twisted for a uniform load at a lift coefficient of 0.25 and Mach number 1.53. The experimental results are compared to those from other investigations. A maximum lift-drag ratio of 8.9 and a minimum drag coefficient of 0.0145 was obtained.
Date: January 9, 1950
Creator: Hall, Charles F. & Heitmeyer, John C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Further Investigation of a Gas Turbine with National Bureau of Standards Body 4811C Ceramic Rotor Blades

Description: Memorandum presenting an investigation of 4811C ceramic blades and the problems involved in the adaption of ceramic materials to stressed turbine components. Results regarding spin tests and rotating heat-shock runs are provided.
Date: March 9, 1950
Creator: Freche, John C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Wind-Tunnel Investigation at Low Speed of a Wing Swept-Back 63 Degrees and Twisted and Cambered for a Uniform Load at a Lift Coefficient of 0.5

Description: Report discusses the results of testing to determine the low-speed longitudinal stability characteristics and spanwise distribution of load of a wing model with the leading edge swept back 63 degrees, an aspect ratio of 3.5, and a large amount of twist and camber. The results are compared to tests of a model of an untwisted and uncambered wing of identical plan form. Measurements of force, pressure-distribution, and comparison of theoretical and experimental span loading are described.
Date: May 9, 1950
Creator: Weiberg, James A. & Carel, Hubert C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Aerodynamic study of a wing-fuselage combination employing a wing swept back 63 degrees: effect of Reynolds number at supersonic Mach numbers on the longitudinal characteristics of a wing twisted and cambered for uniform load

Description: Report presenting a wind-tunnel investigation of the longitudinal characteristics of a wing-body combination with a wing with leading edge swept back 63 degrees. Lift, drag, and pitching-moment measurements were made over a range of Mach and Reynolds numbers. Results regarding the general characteristics and effect of Reynolds number are provided.
Date: October 9, 1950
Creator: Heitmeyer, John C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Effects of molding conditions on some physical properties of glass-fabric unsaturated-polyester laminates

Description: Report presenting an investigation of the effects of several molding conditions on the physical properties of laminates prepared with Fiberglass 181 glass fabric and Bakelite XRS-81 unsaturated-polyester resin. The molding variables included pressure, temperature, and time during both precuring and curing operations. The laminates were tested for several physical properties including resin content, percentage of voids, specific gravity, and flexural strength on the diagonal, both wet and dry.
Date: November 9, 1950
Creator: Wier, John E.; Pons, Dorothy C. & Axilrod, Benjamin M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Performance of 4600-Pound-Thrust Centrifugal-Flow-Type Turbojet Engine With Water-Alcohol Injection at Inlet

Description: "An experimental investigation of the effects of injecting a water-alcohol mixture of 2:1 at the compressor inlet of a centrifugal-flow type turbojet engine was conducted in an altitude test chamber at static sea-level conditions and at an altitude of 20,000 feet with a flight Mach number of 0.78 with an engine operating at rated speed. The net thrust was augmented by 0.16 for both flight conditions with a ratio of injected liquid to air flow of 0.05. Further increases in the liquid-air ratio d… more
Date: October 9, 1950
Creator: Glasser, Philip W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Model flight investigation of a nonlifting winged tow target

Description: Report presenting an investigation in the free-flight tunnel to study the dynamic stability characteristics at low speeds of a winged tow-target model, the wings of which were free to float about a spanwise axis. Results regarding the wing panels fixed rigidly to the fuselage, wing panels hinged to move together, and wing panels hinged independently are provided.
Date: October 9, 1950
Creator: Shanks, Robert E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Static Directional Stability of a Tandem-Helicopter Fuselage

Description: Memorandum presenting an investigation to determine the static directional stability of a fuselage typical of tandem helicopters. The model consisted of a body with an elliptical cross section, a rear rotor pylon which was faired to form a large vertical tail with a very thick airfoil section, and a small horizontal tail mounted at about the midpoint of the height of the vertical tail. Results regarding the stability of the original model, the causes of low directional stability, and tests of s… more
Date: August 9, 1950
Creator: Smith, Charles C., Jr.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Horizontal tail loads in maneuvering flight

Description: From Summary: "A method is given for determining the horizontal tail loads in maneuvering flight. The method is based upon the assignment of a load-factor variation with time and the determination of a minimum time to reach peak load factor. The tail load is separated into various components. Examination of these components indicated that one of the components was so small that it could be neglected for most conventional airplanes; therefore, the number of aerodynamic parameters needed in this … more
Date: February 9, 1950
Creator: Pearson, Henry A.; McGowan, William A. & Donegan, James J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department

[Two children with WBAP cake]

Description: Photograph of two toddlers, a boy and a girl, sitting on a table with a cake. The cake has "WBAP-TV" written in frosting on the side and two candles.
Date: October 9, 1950
Creator: WBAP-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Photograph
Partner: UNT Libraries Special Collections
open access

Electron Spectrum of Pa²³³

Description: The following report describes the electron spectrum of protactinium derived from 23 minute thorium 233 that was produced by neutron capture in stable thorium.
Date: May 9, 1950
Creator: Keller, H. B. & Cork, James M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

[News Script: Safety Conference]

Description: Script from the WBAP-TV/NBC station in Fort Worth, Texas relating a news story about Safety Day in Fort Worth, where a conference at the First Baptist Church awards Jimmy Ray Bull a trophy for safety for Hogg School.
Date: May 9, 1950
Creator: WBAP-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Script
Partner: UNT Libraries Special Collections
open access

[News Script: Triple Birthday]

Description: Script from the WBAP-TV/NBC station in Fort Worth, Texas relating a news story about the Lancione triplets celebrating their first birthday in Dallas.
Date: June 9, 1950
Creator: WBAP-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Script
Partner: UNT Libraries Special Collections
Back to Top of Screen