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Influence of combustion-chamber length on afterburner performance: Report presenting an investigation of the influence of combustion-chamber length on afterburner performance under conditions simulating altitude flight. The component design and arrangement were selected from the results of previous investigations to produce maximum thrust augmentation near the stoichiomtric condition. Results regarding afterburner-inlet conditions, operational limits, and structural cooling requirements are provided.
Investigation of several double-ramp side inlets: Report presenting an investigation of several double-ramp inlets utilizing a variable-angle second ramp mounted on the fuselage of a supersonic airplane with a twin-duct air intake system and investigated at several Mach numbers. With all of the inlets, the boundary-layer air from the precompression ramp bridged across the leading edge of the variable ramp.
Performance of a 16-inch ram-jet engine with a can-type combustor at Mach numbers of 1.50 to 2.16: Report presenting an investigation in the supersonic wind tunnel to evaluate the performance of a 16-inch ramjet engine using a can-type-combustor configuration. Data were obtained over a range of fuel-air ratios, free-stream Mach numbers, and angles of attack. Combustion efficiencies were generally unaffected by free-stream Mach number and varied between 60 and 90 percent with JP-4 fuel.
Petrography of the black Todilto limestone area with respect to processing properties: Discussing the petrography of the black Toldilto Limestone Area with respect to the processing properties
The Particle-in-Cell Method for Two-Dimensional Hydrodynamic Problems: The following report presents a discussion of the method for hydrodynamic problems, together with some new considerations that have arisen concerning the method.
Aerodynamic characteristics at Mach number of 2.01 of two cruciform missile configurations having 70 degree delta wings with length-diameter ratios of 14.8 and 17.7 with several canard controls: From Introduction: "The present paper contains the results of the investigation of the aerodynamic characteristics at Mach number of 2.01 of the two cruciform wing missiles equipped with larger canard controls and compares the result with that obtained previously with a smaller control."
Effects of Canopy, Revised Vertical Tail, and a Yaw-Damper Vane on the Aerodynamic Characteristics of a 1/16-Scale Model of the Douglas D-558-II Research Airplane at a Mach Number of 2.01: Report discussing the aerodynamic characteristics in pitch and sideslip of a model of a Douglas D-558-II airplane with and without a yaw-damper vane at Mach number 2.01. A revised model was tested using a canopy and modified vertical tail. The revised configuration was found to have higher directional stability, trim lift coefficients, drag, and more positive effective dihedral than the original configuration.
A Flight Evaluation of the Stability and Control of the X-4 Swept-Wing Semitailless Airplane: Memorandum presenting an evaluation of the handling qualities of the Northrop X-4 swept-wing semitailless airplane covering a speed range from stall to a Mach number of 0.92 primarily at 30,000 feet. The characteristic problems of tailless airplanes at low speeds, such as marginal longitudinal stability and control resulting in close center-of-gravity limits, were encountered. Results regarding static longitudinal stability characteristics, dynamic stability characteristics, and static lateral and directional stability and control are provided.
Pressure Distributions on Plug- and Semaphore-Type Spoiler Ailerons on a 35 Degree Sweptback Wing of Aspect Ratio 4, Taper Ratio 0.6, and NACA 65A006 Airfoil Section at High Subsonic Speeds: Report presenting an investigation in the high-speed tunnel to determine the pressure distribution at the 20-, 46-, and 65-percent wing semispan stations on a plug-type spoiler and a segment of a semaphore-type spoiler. The investigation was carried out at a range of Mach numbers and angles of attack. The pressure distributions and integrated section force and moment data are presented without discussion.
Age Determination of Zircon Crystals From Ceylon: From Abstract: "Age determinations have been made on 21 crystals of gem quality zircon from Ceylon which are believed to have been derived from pegmatites of pre-Cambrian age."
Application of Two-Dimensional Vortex Theory to the Prediction of Flow Fields Behind Wings of Wing Body Combinations at Subsonic and Supersonic Speeds: Note presenting a theoretical investigation of a general method for predicting the flow field behind the wings of plane and cruciform wing and body combinations at transonic or supersonic speeds and slender configurations at supersonic speeds. The effects of certain geometric parameters as aspect ratio,angle of attack and incidence, ratio of body radius to wing semispan, and angle of bank on the vortex wake behidn wings of wing-body combinations were studied.
Bastnaesite, an Accessory Mineral in the Redstone Granite, Westerly, Rhode Island: Report discussing the occurrence and analysis of bastnaesite in the Redstone granite of the Sterling batholith near Westerly, Rhode Island.
Botanical Prospecting for Uranium on La Ventana Mesa, Sandoval County, New Mexico: A report about uranium bearing coal in the Allison-Gibson members of the Cretaceous Mesaverde formation which crops out in erosional remnants of the mesa.
Chattanooga Shale Investigations Along the Sequatchie Anticline of Tennessee and Alabama: From abstract: "In 1953 the Chattanooga shale in the Sequatchie anticline was tested for its uranium content by seven diamond drill cores. Concurrent with the drilling, geologic field work was done to determine the distribution, thickness, and structural setting of the shale." The report contains information regarding location and drainage, geology, the drilling program, subdivisions of the Sequatchie anticline, and unpublished reports.
Chattanooga shale investigations along the Sequatchie anticline of Tennessee and Alabama: "The results of an investigation of the Chattanooga shale along the Sequatchie anticline of Tennessee and Alabama are summarized in this report. The project was of an exploratory nature designed to 1) obtain fresh core samples from areas where analyses of outcrop samples showed uranium contents as high or higher than those of the Youngs Bend area in DeKalb County, Tenn.; 2) learn more about the distribution and thickness of the shale in those areas and, if necessary, do some geologic mapping; 3) observe general topographic, drainage, and geologic conditions that would affect the mining of shale."
Determination of Thorium in Plutonium-Thorium Alloys: A spectrophotometric method used in the determination of thorium was modified for the purpose of analyzing plutonium alloys which contained 0.01 to 0.8 percent thorium. Absorbance values were measured at 545 millimicrons for solutions containing thorium and thorin, the organic reagent added to form a colored complex with thorium in the presence of plutonium (III) . With plutonium-thorium 0.8 percent thorium, the average recovery of thorium was 99.6 +- 1.5 percent. For similar samples containing 0.01 to 0.2 percent thorium, the average recovery 101.0 +- 3.4 percent, after the thorium was separated from plutonium by precipitation of thorium fluoride with the aid of lanthanum fluoride as a carrier.
Estimate of Known Recoverable Reserves of Coking Coal in Mercer County, West Virginia: Report issued by the Bureau of Mines over investigations of coking-coal reserves of Mercer County, West Virginia. Methods used, and measurements of coal reserves are listed. This report includes tables, and maps.
Examination of Copper-Uranium Occurrences in the Willaha Area, Coconino County, Arizona: Abstract: A study, consisting of field and laboratory work, was undertaken in an endeavor to establish possible structural mineralization controls associated with the copper-uranium occurrences in the Willaha area, Coconino County, Arizona. Uranium mineralization, apparent at present, is localized along small fissures and vugs and in certain beds and lenses of the middle member of the Kaibab formation(Permian). It is associated with copper and iron oxide staining. Though no definite ore controls were disclosed by this study, at least a limited program of shallow drilling is warranted on the property. This sub-surface exploration should determine possible extensions of known mineralized areas, explore surface radiometric anomalies, and provide data for the determination of possible guides to ore. Deeper exploration may encounter mineralization in other horizons of the Kaibab limestone.
An experimental investigation of wheel spin-up drag loads: Report presenting some information on landing-gear applied drag loads and on the nature of the wheel spin-up phenomenon in landing, based on a program of tests under controlled conditions in the impact basin. Results regarding fundamentals of the wheel spin-up process, comparison of the maximum loads in various types of tests, variation of coefficient of friction, and effect of prerotation are provided.
A Field Method for Making a Quantitative Estimate of Altered Tuff in Sandstone: Report discussing a method for using benzidine to identify altered tuff in sandstone. The method is "practical for field or field laboratory studies associated with stratigraphic correlations, mineral deposit investigations, or paleogeographic interpretations."
Heat transfer from a hemisphere-cylinder equipped with flow-separation spikes: Average heat-transfer, temperature-recovery, and pressure-distribution measurements were obtained over the hemispherical nose of a body of revolution both with and without flow-separation spikes. The tests, conducted in a range of Reynolds numbers from 1.55 to 9.85 x 10(5) and from Mach number 0.12 to 5.04, indicated that in supersonic flow the addition of spikes approximately doubles the rate of heat transfer, regardless of spike length.
Investigation of Lift, Drag, and Pitching Moment of a 60 Degrees Delta-Wind-Body Combination (AGARD Calibration Model B) in the Langley 9-Inch Supersonic Tunnel: "The lift, drag, and pitching-moment characteristics of the AGARD Calibration Model B as determined in the Langley 9-inch supersonic tunnel are presented at Mach numbers of 1.62, 1.94, and 2.41 and at a Reynolds number, based on body length, of approximately 3.0 x 10(exp 6). The zero-lift drag data compared favorably with available data and were in the proper sequence for the effects of Reynolds number" (p. 1).
Kinetic Treatment of the Nucleation in Supersaturated Vapors: The equations of the individual processes of self nucleation are utilized through an electrical analogy to obtain the nucleation frequency. This process is shown to be shorter and less subject to error than that of previous investigators since the appearance of indeterminant integration constants is completely avoided. With the nucleation frequencies of crystals and spheres the Ostwald law of stages is reviewed and modified.
The Occurrence and Properties of Metatyuyamunite: A report about a new mineral called metatyuyamunite which is a dehydration product of tyuyamunite. This mineral has been collected from more than 35 localities in the Colorado Plateaus,several localities in Fall River County, S. Dakota, and Campbell and Johnson Counties, Wyo.
Photogeologic Map, Moab-6 Quadrangle, Grand County, Utah: This is a photogeologic map scale 1:24,000 of MOAB-6 Quadrangle in Grand County, Utah.
The Regeneration Factor as a Function of Time in a Th232 - U235 Thermal Reactor: This technical report is concerned with a theoretical investigation of the variation of the regeneration factor [gamma] in a Th232 - U235 thermal reactor. The abundances of the significant isotopes in the thorium-uranium cycle have been derived as a function of irradiation time at constant reactor power. The change in [gamma] as a function of irradiation time at constant power was calculated for combinations of enrichment and resonance escape probability considered likely to exist in a thermal reactor. The effect upon [gamma] of the the absorption cross section of 91Pa233 and of the fission products has been shown.
Retention of Uranium During Oxidative Ashing of Selected Naturally Occurring Carbonaceous Substances: Abstract: Data are presented to show that no appreciable loss of uranium occurs when uranium-bearing carbonaceous materials undergo oxidative ashing under routine conditions and with routine care.
Section characteristics of an NACA 0006 airfoil with area suction near the leading edge: Report presenting an investigation of the low-speed two-dimensional aerodynamic characteristics of an NACA 0006 airfoil with area suction near the leading edge. For a given increase in lift coefficient, the minimum suction quantity required was related to the magnitude of the difference between the external pressure coefficients at the leading and trailing edges of the porous area. Results regarding the stall of the model, effect of chordwise extent of suction, chordwise variation of suction velocity, typical aerodynamic characteristics, effect of free-stream velocity, effect of a deflected flap, and some design considerations are provided.
Sodium Graphite Reactor, Quarterly Progress Report, March-June 1954: "The Atomic energy Commission has undertaken a development program to provide the technology needed for the evaluation and economic design of nuclear power plants. This program is to be carried out during the next five years at several national laboratories and industrial organizations. The Sodium Graphite Reactor (the SGR) is one of those to be investigated and experimentally tested as part of this 5-year effort. The program on the SGR is intended to expand our area of information covering sodium-graphite technology, experimentally demonstrate the feasibility of this reactor complex and extend its performance limits, and apply in information developed to designs suitable for the full-scale nuclear power plant. As a principal part of this program, a Sodium Reactor Experiment (the SRE) is to be constructed and operated; it will be the major experimental facility in which the performance of this reactor will be studied and new technological advances tested. This report continues an earlier series 2-7 in which previous work on the SGR and the SRE has been described. In this report, the progress on the program is described in two main sections. Section A is devoted to work relating to the general technology of Sodium Graphite Reactors, and to studies relating to the full-scale plant. Section B covers progress on the analytical, experimental, and design efforts devoted solely to the SRE, required for its design and construction.
Some Observations on the Reactivity of Plutonium Dioxide: The index of refraction of PuO2 made by thermal decomposition of PU(C2O2, 6H2O gradually increases from a value < 1.9 to 2.40 as the decomposition temperature is increased from 150 degree to l000 degree C. This change in refractive index parallels a gradual change in the x-ray diffraction pattern from weak, diffuse lines for PuO2 ignited at 150° to sharp, well resolved lines for PuO2 ignited at 1000°C. Similar results are observed for PuO2 made by thermal decomposition of Pu2(C2O4)3*11H2O. The refractive index of PuO2 made from Pu metal at 170°C is 2.40 and is not affected by further ignition at higher temperatures, although crystal growth does occur. The rate of solution of PuO2 in an HCl-KI solution is greatest for samples prepared at low temperatures and decreases markedly for oxides ignited at higher temperatures. These observations hive been interpreted to mean that ignition at higher temperatures causes a gradual perfection of the originally highly distorted and impurity-containing PuO2 lattice obtained by low temperature decomposition of the oxalates and promotes the slow growth of crystallites. Both factors decrease the reactivity of the PuO2.
Starting and Operating Limits of Two Supersonic Wind Tunnels Utilizing Auxiliary Air Injection Downstream of the Test Section: Note presenting a determination of the starting and operating pressure ratios for two supersonic wind tunnels which employed air injectors to supplement the primary pumping systems of the tunnels. Data are presented for tunnels operating at Mach numbers 3.85, 3.05, and 2.87 over a range of injector-to-tunnel mass-flow ratios of 0.5 to 1.35.
Stress Analysis of Circular Semimonocoque Cylinders With Cutouts by a Perturbation Load Technique: "A method is presented for analyzing the stresses about a cutout in a circular cylinder of semimonocoque construction. The method involves the use of so-called perturbation solutions which are superposed on the stress distribution that would exist in the structure with no cutout in such a way as to give the effects of a cutout. The method can be used for any loading case for which the structure without the cutout can be analyzed and is sufficiently versatile to account for stringer and shear reinforcement about the cutout" (p. 1).
Summary Report [of Analytical Results from the HASL Strontium Program] March 30, to July 30, 1954: This technical report includes (1) World-wide Network (Maps). (2) Fallout of Sr90 at selected sites during June and July. (3) Comparison of Sr90 collection by gummed paper and pot on the roof of the New York Operations Office March through July. (4) Sr90 contamination of cow's milk in Metropolitan New York. (5) Sr90 content of the upper air prior to Castle. (6) Sr90 contamination of pooled fetal bones collected during June from the Metropolitan Area. (7) Sr90 contamination of water supply in the Metropolitan Area June and July.
Theoretical analysis of an airplane acceleration restrictor controlled by normal acceleration, pitching acceleration, and pitching velocity: Report presenting an analog computer analysis of an acceleration restrictor which limits the elevator motion of an airplane. The device applies a mechanical brake to the elevator control system in response to signals. Results for a restrictor sensitive to combined signal of normal and pitching acceleration and a restrictor sensitive to normal and pitching acceleration and pitching velocity are provided.
Transonic Flow Past Cone Cylinders: Note presenting experimental results for transonic flow past cone-cylinder, axially symmetric bodies. The drag coefficient and surface Mach number are studied as the free-stream Mach number is varied and, wherever possible, the experimental results are compared with theoretical predictions. The theoretical problem of transonic flow past finite cones is discussed briefly and an approximate solution of the axially symmetric transonic equations, valid for a semi-infinite cone, is presented.
Turbulent-Heat-Transfer Measurements at a Mach Number of 3.03: Report presenting turbulent-heat-transfer measurements obtained through the use of a three-dimensional axially symmetric annual nozzle consisting of an inner shaped plug and an outer cylindrical sleeve at Mach number 3.03. Results regarding the variation of wall temperature with longitudinal distance, variation of local Nusselt number with local Reynolds number, and variation of local temperature-recovery factor with local Reynolds number are provided.
Uranium-Bearing Lignite and its Relation to the White River and Arikaree Formations in Northwestern South Dakota and Adjacent States: From introduction: The purpose of the study is to evaluate the economic possibilities of radioactive lignites and to determine the geologic factors controlling the accumulation of uranium in lignite.
Uranium-Bearing Lignite and Its Relation to the White River and Arikaree Formations in Northwestern South Dakota and Adjacent States: A report about uranium-bearing lignite beds that occur at many horizons in the Hell Creek formation of late Cretaceous age and the overlying Ludlow, Tongue River, and Sentinel Butte members of the Fort Union formation of Paleocene age.
Uranium Occurrence at the Crescent Mine, Shoshone County, Idaho: From abstract: Uranium on the Hooper Tunnel level of the Crescent mine, Shoshone county, Idaho, occurs in two red, iron oxide-stained radioactive zones in and along the hanging wall of Alhambra fault.
Use of Controlled Photosynthesis for Maintenance of Gaseous Environment: Abstract: "The problem of maintaining livable oxygen and carbon dioxide pressures in a closed space in which men must live leads to consideration of the possible use of the photosynthesis of green algae. A calculation based on the known respiratory rate of man and the photosynthetic rates of Chlorella indicates that it would be feasible to use algae for this purpose."
Evaluation of Sampling Variables : Vessel C-102: Purpose: "In order to determine the optimum procedure for sampling the coarse-feed tank (C-102) of the NP and MTR process, a systematic series of tests has been conducted to measure the extent of solution stratification and effect of air-sparging as a means of vessel homogenization."
Investigation of a 1/4-Scale Model of the Republic F-105 Airplane in the Langley 19-Foot Pressure Tunnel: Influence of Trailing-Edge Flap Span and Deflection on the Longitudinal Characteristics: Report presenting development tests on a model of the Republic F-105 airplane at a Mach number of 0.20. The purpose of the current investigation is to obtain the longitudinal force and moment characteristics of the model equipped with trailing-edge flaps of various spans and deflections. Results regarding the longitudinal stability characteristics and effect of the horizontal tail are provided.
Investigation of a 1/4-Scale Model of the Republic F-105 Airplane in the Langley 19-Foot Pressure Tunnel : Influence of Trailing-Edge Flap Span and Deflection on the Longitudinal Characteristics: Memorandum presenting development tests on a scale model of the Republic F-105 airplane in the 19-foot pressure tunnel. The second phase, which is presented in this report, was made at a Reynolds number of 9.0 x 10(exp 6) and a Mach number of 0.20. The purpose of the tests was to obtain the longitudinal force and moment characteristics of the model equipped with trailing-edge flaps of various spans and deflections.
Polarization of Bremsstrahlung: Abstract: Numerical information necessary to an experimental study of the polarization of bremsstrahlung is presented. One may conclude that it is possible to produce significantly polarized γ-ray beams with existing electron accelerators. These beams will provide a new tool for the study of photonuclear reactions over a wide range of energy.
Performance of a pair of tubular combustors with an external pilot chamber: Report presenting an investigation of the performance of a pair of tubular turbojet combustors interconnected by a 3-inch-inside-diameter ceramic-lined pilot chamber to determine the utility of the pilot chamber for improvement of high-altitude combustion efficiency, lean limits, and minimum engine speed. Results regarding the combustion efficiency and lean-limit blow-out, ignition limits, and altitude operating limits are provided.
Experimental Investigation of a Five-Stage Axial-Flow Research Compressor with Transonic Rotors in All Stages 1: Compressor Design: Memorandum presenting a five-stage axial-flow compressor with all rotor rows operating with transonic relative inlet Mach numbers designed as a research unit to study the potentialities and problems arising from the compounding of transonic stages. The report presents all design values and procedures, blade-row velocity diagrams, and the selection of blade shapes.
Experimental Investigation of a Five-Stage Axial-Flow Research Compressor With Transonic Rotors in All Stages 2: Compressor Over-All Performance: Memorandum presenting an evaluation of the overall performance of a 20-inch-diameter five-stage compressor as the initial step in an investigation of the potential performance and problems associated with a high-stage-pressure ratio compressor. The overall performance was evaluated over a range of flows at equivalent tip speeds from 40 to 100 percent of design. Results regarding the overall performance, compressor-inlet conditions, compressor-discharge conditions, stagewise variation of static pressure, and performance evaluation are provided.
Pumping Characteristics for Several Simulated Variable-Geometry Ejectors With Hot and Cold Primary Flow: Report presenting an investigation of the pumping characteristics of eight conical ejectors mounted on a fuselage portion of a supersonic airplane. The diameter ratio, spacing ratio, nozzle pressure, and ejector weight flows were varied. Results regarding the ejector pumping characteristics, comparison with previous results, comparison of data for cold and hot primary flow, and ejector air-supply requirements are provided.
Pumping Characteristics for Several Simulated Variablegeometry Ejectors With Hot and Cold Primary Flow: Report presenting an investigation of the pumping characteristics of eight conical ejectors mounted on a scale fuselage portion of a supersonic airplane. The configurations simulated various positions of a two-position nozzle with a fixed shroud and double-iris exit. Results regarding ejector pumping characteristics, comparison with previous results, comparison of data for cold and hot primary flow, and ejector air-supply requirements are provided.
An Investigation in the Ames 40- by 80-Foot Wind Tunnel of a YT-56A Turboprop Engine Incorporating a Decoupler and a Controlled-Feathering Device: "An investigation of a decoupler and a controlled-feathering device incorporated with the YT-56A turboprop engine has been made to determine the effectiveness of these devices in reducing the high negative thrust (drag) which accompanies power failure of this type of engine. Power failures were simulated by fuel cut-off, both without either device free to operate, and with each device free to operate singly. The investigation was made through an airspeed range from 50 to 230 mph" (p. 1).

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