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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, the latter value being based on experimental work. It is shown in the present memo, that Dancoff's actual measurements are quite consistent with the Breit-Wigner formula and the above mentioned GAMMA /sub gamma /. The discrepancy is a result of Dancoff's transition from the actual measurements to the resonance integral, this transition being based on data that is now obsolete. (auth)
Date: February 1, 1957
Creator: Ergen, W.K.
Partner: UNT Libraries Government Documents Department

Additional Experiments With Flat-Top Wing- Body Combinations at High Supersonic Speeds

Description: Memorandum presenting an experimental study of the effects of several variations in configuration geometry on the aerodynamic characteristics of flat-top wing-body combinations. Generally, the configurations consist of one half of a body of revolution mounted beneath a wing of essentially arrow plan form. Results regarding the effect of trailing-edge sweep, effect of the addition of auxiliary bodies, effect of tip-flap deflection, effect of dihedral, effect of leading-edge sweep, effect of fuselage fineness ratio, effect of fuselage profile shape, and static longitudinal stability characteristics are provided.
Date: February 19, 1957
Creator: Syvertson, Clarence A.; Wong, Thomas J. & Gloria, Hermilo R.
Partner: UNT Libraries Government Documents Department

Altitude performance of a full-scale turbojet engine using pentaborane fuels

Description: From Introduction: "The data presented herein include the standard engine performance parameters of net thrust, specific fuel consumption, and engine total-pressure ratio that reflect the performance available from the use of pentaborane as a fuel. The influence of the boric oxide deposits from the high-concentration pentaborane fuels on engine component performance is presented."
Date: February 28, 1957
Creator: Useller, James W.; Kaufman, Warner B. & Jones, William L.
Partner: UNT Libraries Government Documents Department

An analog computer study of several stability augmentation schemes designed to alleviate roll-induced instability

Description: From Introduction: "The purpose of the present study is to investigate these suggested methods for reducing the undesirable pitching and yawing motions of an airplane during roll maneuvers. The airplane characteristics used in this study were those of the F-100A airplane having the original small vertical tail as shown in figure 1."
Date: February 19, 1957
Creator: Creer, Brent Y.
Partner: UNT Libraries Government Documents Department

Analytical and experimental investigation of the effects of compressor interstage air bleed on performance characteristics of a 13-stage axial-flow compressor

Description: Air was bled over the fifth-and tenth-stage rotor-blade rows through ports designed to pass 11 and 9 percent of the inlet flow, respectively, at 80 percent speed. Along the rated operating line the maximum speed at which rotating stall was encountered was lowered by either of these bleeds, and the stall patterns below these speeds were altered so that no dangerous resonant rotor-blade bending vibrations were excited. The combination of the two bleeds completely eliminated rotating stall to at least 50 percent speed. The compressor-discharge weight flow was decreased only at intermediate speeds, and the overall pressure ratio was affected only at intermediate speeds, and the overall pressure ratio was affected only by the combination bleed at intermediate speeds. Fifth-stage bleed increased compressor efficiency at low speeds, and tenth-stage bleed decreased efficiency at intermediate speeds.
Date: February 8, 1957
Creator: Lucas, James G.; Geye, Richard P. & Calvert, Howard F.
Partner: UNT Libraries Government Documents Department

Application of Critical Mass document HW-44064 to the Purex Process

Description: This document is a supplementary operating guide to document HW-44064, ``Process Specifications for Critical Mass Control -- Purex Plant.`` It is primarily intended that this document illustrate the actual operational means of conforming to the limits of critical mass control as presented in HW-44064.
Date: February 5, 1957
Creator: Gustafson, L. D.
Partner: UNT Libraries Government Documents Department

AN APPLICATION OF GAME THEORY TO SPECIAL WEAPONS EVALUATION

Description: A metbed was introduced for combining the techniues of classical Lanchester theory of combat with those of game theory toward the end of selecting optimal strategies in combat with special weapons. In the application of this method to the example in which only the defender had atomic weapons,. it was showm that the attacker always chose either to disperse his troops the maximum amount or not to disperse his troops at all. The defender always chose to employ a mixed strategy consisting of the weapon systems of either two intermediate weapons or four small weapons. If both the defender amd attacker hnd access to atomic weapons, then the opticmal strategy for the attacker was to employ the weapon system consisting of four small weapons and to use a mixed stratregy for the dispersion of his troops. On the other hand, the defender never dispersed his troops amd always used a mixed strategy for tee - weapon systems. In the example where the defender has a fixed weapon system and chooses to optimize his aiming procedure, it was shown that the optimal aiming procedure does not involve only the aimimg procedures which are optimal against each of the fixed dispersion patterns for the attacker. The model discussed in this paper is far from realistic, but the authors feel that certain interesting trends may be obtained by such elementary discussions. Two ways in which to approach more reslism are to introduce into the combat the time at which the different groups become engaged amd to obtain a more realistic model for the basic group. (auth)
Date: February 19, 1957
Creator: Hale, J.K. & Wicke, H.H.
Partner: UNT Libraries Government Documents Department

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.
Partner: UNT Libraries Government Documents Department

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 an academic point of view seems justified. Peak to average flux in the core is as much as 4 to 1 in the tip of the center control rod fuel element. However, flux suppressors placed in the water hole in this region are effective in reducing this value to approximately 3 to 1. (auth)
Date: February 1, 1957
Creator: Noaks, J.W. & Johnson, W.R.
Partner: UNT Libraries Government Documents Department

Beehive and Hornet : Reactor Codes for Spherical Geometry

Description: Abstract: Beehive is a five energy group, two region, time independent spherical reactor code. It considers the problem of reactor system in which the core material is assumed to be at a higher energy (temperature) than the reflector material. The code obtains a closed solution for the critical reactor assembly by a procedure which is a logical extension of normal two group theory. The companion code, Hornet, computes the neutron fluxes for the critical assembly determined by the Beehive calculation. Both codes have been programmed for the IBM Magnetic Drum Data-Processing Machine, Type 650. The codes, together with the flow diagrams, are included with this report.
Date: February 8, 1957
Creator: Stone, Stuart P.
Partner: UNT Libraries Government Documents Department

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 deposits of solids at the base of the bellows, which created a condition of oxygen impoverishment. While the crater in the base may have been related to a galvanic effect created by the gold gasket, the contour of the crater would suggest that the cause of the crater was due more to crevice corrosion. (auth)
Date: February 1, 1957
Creator: Kegley, T.M. Jr. & Hammond, J.P.
Partner: UNT Libraries Government Documents Department

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.
Partner: UNT Libraries Government Documents Department

Boilout experiment

Description: There is a definite need to determine the time required for the water in a process tube to boil out after loss of inlet flow. This information is required to evaluate the reactivity and power transients following such an occurrence. Such information will also partially determine the incentive for improvements in safety circuits and equipment, accelerated safety rods in particular. A secondary objective is to learn more about the mechanism of the boil-out. Boil-out times have been theoretically predicted in the past with very little experimental data to back them up. A scanning capacitance method is presented for measurement of the water distribution within a process tube under transient boiling conditions. Preliminary results of exploratory runs are included. The runs simulate inlet pigtail failures on process tubes operating at 725 and 1,000 KW. Curves of water distribution over the tube with time and total tube water content are included. Recommendations are made that the tests be continued to provide valid data for assessing the reactor hazards involved in cases of cooling water supply failure.
Date: February 27, 1957
Creator: Pound, D. C.
Partner: UNT Libraries Government Documents Department

Chemical Processing Department Monthly Report: January 1957

Description: This report, from the Chemical Processing Department at HAPO, discusses the following: Production operation, purex operation, redox operation, finished products operation, power and general maintenance operation, financial operation, facilities engineering operation, research and engineering operation, and employee relations operation.
Date: February 21, 1957
Creator: Hanford Atomic Products Operation. Chemical Processing Department.
Partner: UNT Libraries Government Documents Department

Comparison of Combustion Reactivity of Ethyldecaborane Fuels With Typical Hydrocarbon Fuels on Basis of Spray Flammability Limits of Fuel-Rich Mists and Calculated Lean-Limit Flame Temperatures for Fuel Vapor-Air Systems

Description: From Summary: "The spray flammability limits of various high-energy fuels and hydrocarbon fuels were determined experimentally in an apparatus which measured the minimum percent of oxygen by volume that would permit the ignition of a particular fuel. The fluids investigated were ethyldecaboranes, aliphatic hydrocarbons, olefins, aromatic hydrocarbons, and esters."
Date: February 27, 1957
Creator: Wise, Paul H. & Lipschitz, Abraham
Partner: UNT Libraries Government Documents Department

Comparison of the Combustion Performance of Shell UMF, Grade C, MIL-F-5624C, Grade JP-5, Fuels in a Heavy-Duty XRJ47-W-9 Ram-Jet Engine

Description: Comparable combustion performance data for Shell UMF, grade C, and MIL-F-5624C, grade JP-5, fuels were obtained using a heavy-duty version of the XRJ47-W-9 ram-jet engine operated in a 2.75 Mach number free-jet facility. Data were obtained for the two fuels over a range of fuel-air ratios, engine airflows, and engine-inlet temperatures. The test conditions were selected to provide combustor-inlet temperatures. The test conditions were selected to provide combustor-inlet conditions approximately representative of those which would be encountered over a range of altitudes and flight Mach numbers. The variation of combustion efficiency with fuel-air ratio for the two fuels is compared at the several inlet conditions. The pilot-burner ignition and operating limits with both fuels are also included. In general, the combustion efficiency with Shell UMF, grade C, fuel was 1 to 4 points lower than with MIL-F-5624C, grade JP-5, fuel.
Date: February 19, 1957
Creator: Ranscht, W. G. & Farley, J. M.
Partner: UNT Libraries Government Documents Department

A Description of a Shock Wave in Free Particle Hydrodynamics with Internal Magnetic Fields

Description: Abstract: "The structure of an extremely strong magnetohydrodynamic shock is discussed in the limit of no particle collisions. It is tentatively concluded that the shock transition takes place through the mechanism of a strong electric field produced by charge separation. The pressure in the shocked plasma is due primarily to a very high electron temperature. The ions, on the other hand, undergo an irreversible temperature change of only 3."
Date: February 19, 1957
Creator: Colgate, Stirling A.
Partner: UNT Libraries Government Documents Department

Design and test of mixed-flow impellers 8: comparison of experimental results for three impellers with shroud redesigned by rapid approximate method

Description: Report presenting a comparison of three centrifugal impellers with parabolic, circular, and skewed-parabolic blading that were modified using a recently developed design procedure to reduce velocity gradients along the hub from inlet to outlet. All of the original dimensions except for the shroud contours were retained. Results regarding a comparison of the original and modified parabolic-bladed, circular-bladed, and skewed-parabolic bladed impeller are provided.
Date: February 27, 1957
Creator: Osborn, Walter M.; Smith, Kenneth J. & Hamrick, Joseph T.
Partner: UNT Libraries Government Documents Department