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CHEMICAL PROPERTIES OF BERKELIUM

Description: The recent production by Thompson, Ghiorso, and Seaborg of a radioactive isotope of berkelium (atomic number 97) makes it possible to investigate the chemical properties of this transuranium element by means of the tracer technique. This isotope has been prepared through the bombardment of Am{sup 241} with about 35 Mev helium ions in the 60-inch cyclotron of the Crocker Laboratory and is believed to have the mass number 243, or possibly 244. This Bk{sup 243} has a half-life of 4.6 hours and dec… more
Date: February 24, 1950
Creator: Thompson, Stanley G. & Seaborg, Glenn T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Pile graphite expansion

Description: The purpose of this memorandum is to present and analyze, in terms of the current status of knowledge of radiation damage to graphite, the data available at the present time on the expansion status of the graphite in the piles, and suggest, in terms of this analysis, several possibly feasible curative and preventive measures. The portion of the data to be covered in this memorandum consists of that obtained during the last four years from pile motion measurements and from tube bowing measuremen… more
Date: July 24, 1950
Creator: Warekois, E. P. & Reinker, P. H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Amplifier Design for Proportional Ionization Chambers

Description: This paper presents the requirements of a nuclear amplifier of short resolving time, designed to accept pulses of widely varying amplitudes. Data are given which show that a proportional ionization chamber loaded with a 1,000-ohm resistor develops pulses of 0.5 microsecond duration and several volts amplitude. Results indicate that seven basic requirements are imposed on the amplifier when counting soft beta and gamma radiation in the presence of alpha particles, without absorbers. It should, (… more
Date: August 24, 1950
Creator: Baker, W. H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

An improved approximate method for calculating lift distributions due to twist

Description: Report presenting a method for calculating the lift distribution due to twist which gives a closer approximation than the current Schrenk empirical method and requires about the same amount of computing. The method uses the lifting-line theory and makes use of the lift distribution due to angle of attack and considers the aspect ratio of the wing. Examples are presented for four main types of twist: symmetrical, antisymmetrical, continuous, and discontinuous.
Date: May 24, 1950
Creator: Sivells, James C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Interpretation of boundary-layer pressure-rake data in flow with a detached shock

Description: From Summary: "A procedure is presented for determining boundary-layer quantities from pressure-rake data, which include the combined effects of viscous and shock losses. The problem is analyzed using schileren photographs of the shock configuration, the continuity of mass relationship, and the characteristics of the turbulent boundary layer that its outer edge is defined by a rapid change in slope in the Mach-number profiles in the vicinity of the edge."
Date: August 24, 1950
Creator: Luidens, Roger W. & Madden, Robert T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Effect of Retractable Ignition Plug on Plug Fouling by Carbon Deposits

Description: Memorandum presenting an investigation conducted using a single combustor from a 4600-pound-thrust turbojet engine to determine if ignition-plug fouling by carbon deposits could be prevented by retracting the plug from the combustion zone during operation after ignition had taken place. The fuels used were normally conducive to forming carbon. The results indicated that retracting the ignition plug from the combustion zone after ignition prevented plug fouling by carbon.
Date: August 24, 1950
Creator: Wear, Jerrold D. & Locke, Theodore E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Aerodynamic characteristics of a wing with quarter-chord line swept back 60 degrees, aspect ratio 2, taper ratio 0.6, and NACA 65A006 airfoil section : transonic bump method

Description: From Introduction: "This paper presents the results of the investigation of the wing-alone and wing-fuselage configurations employing a wing with the quarter-chord line swept back 60^o, aspect ratio 2, taper ratio 0.6, and an NACA 65A006 airfoil section parallel to the free stream."
Date: February 24, 1950
Creator: Myers, Boyd C., II & King, Thomas J., Jr.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Pressure Distributions on the Blade Sections of the NACA 10-(3)(066)-033 Propeller Under Operating Conditions

Description: The first report in a series of five that present unanalyzed pressure data obtained in tests of five full-scale propellers with NACA 16-series blade sections. Pressure distributions on the blade sections were measured under operating conditions to determine the aerodynamic characteristics of each blade section. This particular report presents information for eleven radial stations of the NACA 10-(3)(066)-033 propeller.
Date: January 24, 1950
Creator: Maynard, Julian D. & Murphy, Maurice P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Determination of Minimum Moments of Inertia of Arbitrarily Shaped Areas, Such as Hollow Turbine Blades

Description: Memorandum presenting a method for approximately determining the minimum moment of inertia of an arbitrarily shaped area, such as the section of a hollow turbine blade. The practical application of the method involves a simple routine tabular procedure.
Date: February 24, 1950
Creator: Gendler, Sel & Johnson, Donald F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Wind-Tunnel Investigation of the Effects of a Jet Engine Nacelle on the Aerodynamic Characteristics of a 37.25 Degree Swept Back Wing at High Subsonic Speeds

Description: Report presenting a wind-tunnel investigation to determine the aerodynamic characteristics of a wing-nacelle combination at high subsonic speeds. Lift, drag, pitching-moment, and ram-recovery data re presented for a range of Mach and Reynolds numbers.
Date: October 24, 1950
Creator: Boltz, Frederick W. & Buell, Donald A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The Longitudinal Stability, Control Effectiveness, and Control Hinge Moment Characteristics Obtained From a Flight Investigation of a Canard Missile Configuration at Transonic and Supersonic Speeds

Description: A 60 degree delta wing canard missile configuration was flight-tested at the Langley pilotless aircraft research station at Wallops Island, Va. The results include the longitudinal stability derivatives, control effectiveness, drag characteristics, and control-surface hinge-moment characteristics for a Mach number range of 0.7 to 1.45.
Date: November 24, 1950
Creator: Niewald, Roy J. & Moul, Martin T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Investigation of frequency-response characteristics of engine speed for a typical turbine-propeller engine

Description: Experimental frequency-response characteristics of engine speed for a typical turbine-propeller engine are presented. These data were obtained by subjecting the engine to sinusoidal variations of fuel flow and propeller-blade-angle inputs. Correlation is made between these experimental data and analytical frequency-response characteristics obtained from a linear differential equation derived from steady-state torque-speed relations.
Date: March 24, 1950
Creator: Taylor, Burt L., III & Oppenheimer, Frank L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department

[El Chico store display]

Description: Photograph of two men in suits facing each other in front of a display of stacked cans of "El Chico" chili in a grocery store. On the display is a sign advertising the "El Chico Show."
Date: October 24, 1950
Creator: WBAP-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Photograph
Partner: UNT Libraries Special Collections

[Bonny Maid postcard]

Description: Photograph of actress Anne Francis as the Bonny Maid. She is modeling as the Bonny Maid in a unique costume with writing that says "Bonny Maid" at the top and "Affectionately Yours" at the bottom.
Date: February 24, 1950
Creator: WBAP-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Photograph
Partner: UNT Libraries Special Collections

[Two men and Gillette's store display]

Description: Photograph of two men leaning against a Gillette's razor blade dispenser display in a store. The display includes a sign advertising WBAP's "Gillette's Cavalcade of Sports." The man on the left wears a suit and bow-tie and the man on the right is partially bald and wears a white shirt and tie but no jacket.
Date: July 24, 1950
Creator: WBAP-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Photograph
Partner: UNT Libraries Special Collections
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