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ACTIVATION CROSS SECTION OF Na$sup 23$ AROUND 3 KEV

Description: The activation cross section of sodium in the range from thermal energy through the 3-kev resonance is generally assumed to be given by the one-level BreitWigner formula, the GAMMA /sub gamma / being selected to describe correctly the known thermal absorption cross section. The contribution of this resonance to the resonance activation integral then turns out to be 0.12 barns. This somewhat indirectly inferred value is considerably larger than the value given by Dancoff et al., in an old paper,… more
Date: February 1, 1957
Creator: Ergen, W.K.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Approximate solution for streamlines about a lifting rotor having uniform loading and operating in hovering or low-speed vertical-ascent flight conditions

Description: Report presenting that the usual assumption of a uniform vortex cylinder for the wake vortex structure of a uniformly loaded, lifting rotor operating in the hovering or low-speed vertical-ascent flight conditions does not yield useful results for induced velocities in the region about the periphery of the rotor.
Date: February 1957
Creator: Castles, Walter, Jr.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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ARMY PACKAGE POWER REACTOR ZERO POWER EXPERIMENTS (ZPE-1)

Description: The complete results of the Army Package Power Reactor Zero Power Experiments performed on the APPR1 core at the Alco Criticality Facility are given. The fully loaded cold clean core, containing 22 480 1 grams of U/sup 235/ , has an excess K of approximately 16%. The temperature coefficient at 170 deg F is approximately --0.67 x 10/sup -4/ DELTA K/ deg F. The presence of fine structure in neutron flux measurements and control rod calibrations is evident and further study of these effects from a… more
Date: February 1, 1957
Creator: Noaks, J. W. & Johnson, W. R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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BELLOWS FAILURE IN SOLIDS SEPARATION LOOP OF THE HRT MOCKUP

Description: The failure of the valve bellows would appear to be due to a combination of stress corrosion nnd crevice corrosion. Stress corrosion occurred as evidenced by the transgranular branched cracking found in the bellows and in the base which was joined to the bellows. It seems probable that chlorides were present, which, along with the residual stresses present in the bellows assembly, created the necessary conddtions for stress corrosion to occur. Crevice corrosion occurred probably due to heavy de… more
Date: February 1, 1957
Creator: Kegley, T.M. Jr. & Hammond, J.P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Beneficiation of Iron-Copper Ores from Kasaan Peninsula, Prince of Wales Island, Alaska

Description: Report issued by the Bureau of Mines over studies conducted on the beneficiation of iron-copper ores. As stated in the summary, "this report summarizes the results of laboratory testing of copper-bearing magnetite ore from the Poorman, Rush and Brown, and Copper Center deposits, Kasaan Peninsula, Prince of Wales Island, southeastern Alaska" (p. 1). This report includes tables, maps, and illustrations.
Date: February 1957
Creator: Wells, R. R.; Erspamer, E. G. & Sterling, F. T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Characteristics and Analyses of Ninety-Two Colorado Crude Oils

Description: Report issued by the Bureau of Mines over the characteristics and properties of many different crude-oil samples from Colorado. The properties of each sample are presented. This report includes table, maps, and illustrations.
Date: February 1957
Creator: Wenger, W. J.; Whisman, M. L.; Lanum, W. J. & Ball, J. S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Diamond drilling in the Silver Reef (Harrisburg) district and adjacent areas, Washington County, Utah

Description: A report discussing a diamond drilling project in the Silver Reef District and adjacent areas, with the propose to obtain geologic information as well as to further explore the Chinle formation for new ore bodies.
Date: February 1957
Creator: King, Earl N. & Papulak, M. S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Differential equations of motion for combined flapwise bending, chordwise bending, and torsion of twisted nonuniform rotor blades

Description: The differential equations of motion for the lateral and torsional deformations of twisted rotating beams are developed for application to helicopter rotor and propeller blades. No assumption is made regarding the coincidence of the neutral, elastic, and mass axes, and the generality is such that previous theories involving various simplifications are contained as subcases to the theory presented in this paper. Special attention is given the terms which are not included in previous theories. Th… more
Date: February 1957
Creator: Houbolt, John C. & Brooks, George W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Distribution and thickness of salt in the Paradox basin of southwestern Colorado and southeastern Utah: a preliminary report

Description: A report regarding the distribution and thickness of salt in the paradox basin of southeastern colorado and southeastern Utah. This report concerns work done on behalf of the Division of research of the U.S. Atomic Energy Commission.
Date: February 1957
Creator: Baltz, Elmer Harold
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Distribution and Thickness of Salt in the Paradox Basin of Southwestern Colorado and Southeastern Utah, A Preliminary Report

Description: The following report covers investigation work done on the distribution of thick deposits of salt that had occurred in the Paradox member of the Hermosa formation of Pennsylvanian age in an area nearly 12,000 square miles of southwestern Colorado and southeastern Utah.
Date: February 1957
Creator: Baltz, Elmer H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Ditching investigations of dynamic models and effects of design parameters on ditching characteristics

Description: From Summary: "Data from ditching investigations conducted at the Langley Aeronautical Laboratory with dynamic scale models of various airplanes are presented in the form of tables. The effects of design parameters on the ditching characteristics of airplanes, based on scale-model investigations and on reports of full-scale ditchings, are discussed. Various ditching aids are also discussed as a means of improving ditching behavior."
Date: February 1957
Creator: Fisher, Lloyd J. & Hoffman, Edward L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Effect of fiber orientation on ball failures under rolling-contact conditions

Description: The rolling-contact fatigue spin rig was used to test balls of a bearing steel at maximum Hertz stresses of 600,000 to 750,000 psi. The effect of fiber orientation was observed with the ball track restricted to passing directly over the poles, coincident with the equator, or randomly around the ball. The polar areas were found to be weaker in fatigue than the nonpolar areas. This resulted in a much greater portion of the failures occurring in the polar areas than would be expected from a homoge… more
Date: February 1957
Creator: Butler, Robert H.; Bear, H. Robert & Carter, Thomas L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Effect of Frequency and Temperature on Fatigue of Metals

Description: Note presenting a qualitative approach to the problem of the effect of frequency and temperature on fatigue, as the theoretical and experimental results do not always seem to match. The fatigue problem is examined from the viewpoint of a two-component system.
Date: February 1957
Creator: Valluri, S. R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Electrolytic Reduction of Thorium Oxide

Description: From abstract: "Thorium metal has been produced by electrolytic reduction of thorium oxide. Reduction was accomplished in both a KF-ThF4 melt and a NaCl-KCl-ThCl4 melt. A flowsheet for the complete process using the fused fluoride system is proposed."
Date: February 1957
Creator: Meyer, Leon Herbert, 1926-
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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