Technical Report Archive & Image Library (TRAIL) - 116 Matching Results
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- Liquid Metal Fuel Reactor Experiment Monthly Progress Statement: February 1957
- A monthly report summarizing work perform by Babcock & Wilcox personnel for the U.S. Atomic Energy Commission. Included in this report was a study made regarding the possible use of beryllium as a core moderating material, calculations made regarding temperature distribution for various channel sizes and power levels, design parameters for initial operation of the LMFRE, and other work in the design and operation of the reactor.
- Distribution and Thickness of Salt in the Paradox Basin of Southwestern Colorado and Southeastern Utah, A Preliminary Report
- 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.
- Distribution and thickness of salt in the Paradox basin of southwestern Colorado and southeastern Utah: a preliminary report
- 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.
- Internal Performance of Two-Dimensional Wedge Exhaust Nozzles
- Memorandum presenting an experimental investigation of four rectangular-throat two-dimensional wedge exhaust nozzles. Three of the nozzles were designed to conform to Prandtl-Meyer streamlines for pressure ratios of 5, 10, and 24, and a fourth, arbitrarily contoured, with a length less than that required for isentropic expansion, was designed for a pressure ratio of about 9.
- National Motor-Gasoline Survey: Summer 1956
- Report issued by the U.S. Bureau of Mines discussing surveys conducted on the motor gasoline sold during the summer of 1956. The amount, location, and price of gasoline sold during this time are presented. This report includes tables, illustrations, and a map.
- Sidewash in the Vicinity of Lifting Swept Wings at Supersonic Speeds
- Equations and charts have been presented for the conical part of the sidewash above and below swept wings at small angles of attack. This flow-field component is necessary in making calculations of the wing-induced forces and moments on stores, missiles, and pylons. All supersonic Mach numbers and wing leading-edge sweep angles have been considered.
- Instrumentation and Controls Division Semiannual Progress Report for Period Ending July 31, 1956
- Report issued by the Oak Ridge National Laboratory discussing semiannual progress made by the Instrumentation and Controls Division. Descriptions of progress and studies conducted are presented. This report includes illustrations, and photographs.
- Homogeneous Reactor Project Quarterly Progress Report: August-October 1956
- Report issued by the Oak Ridge National Laboratory discussing quarterly progress made by the Homogeneous Reactor Program. Descriptions of progress and studies conducted are presented. This report includes tables, illustrations, and photographs.
- Location of uranium occurrences in southcentral Wyoming and northwestern Colorado
- "The principal uranium deposits in southcentral Wyoming and north-western Colorado are located in or at the margins of broad Tertiary basins. Interesting and possibly commercially significant occurrences are found in other Tertiary and older rocks at widely separated locations within this region. The six maps accompanying this report give the location, name, and ownership of the mines and occurrences from which samples assaying greater than 0.10% U3O8 have been collected. Claim names, location, and ownership are also given for occurrences outside the map areas."
- Equation of State and Heat Content of Uranium
- Report issued by the APDA regarting studies conducted on the state of uranium at different temperature and pressure. Calculations are presented for the differing pressures of uranium; it includes tables.
- Ground Simulator Studies of the Effects of Valve Friction, Stick Friction, Flexibility, and Backwash on Power Control System Quality
- Report presents results of tests made on a power control system by means of a ground simulator to determine the effects of various combinations of valve friction and stick friction on the ability of the pilot to control the system. Various friction conditions were simulated with a rigid control system, a flexible system, and a rigid system having some backlash. For the tests, the period and damping of the simulated airplane were held constant.
- Effect of fiber orientation on ball failures under rolling-contact conditions
- 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 homogeneous material. The early failures are discussed.
- Approximate solution for streamlines about a lifting rotor having uniform loading and operating in hovering or low-speed vertical-ascent flight conditions
- 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.
- Calculation of Wall-Scattered Gamma Radiation Escaping through a Shield Opening - Application to the HRT
- A simplified method was developed for calculating wall-scatter gamma radiation escaping through a shield opening. The method was applied to the HRT and the results showed that next to the line of sight contribution, scattering of the wall of the shield opening was the main contribution to the dose at the rear edge of the shield. Design charts were prepared that give the dose as a function of the gamma source location with the reactor cell.
- A General System for Calculating Burning Rates of Particles and Drops and Comparison of Calculated Rates for Carbon, Boron, Magnesium, and Isooctane
- Report presenting a system of general equations for computing the burning rates of small particles burning as diffusion flames. Two types of solutions are carried out: a complex numerical integration and a less complicated and rigorous analytical solution involving stepwise iteration across the temperature profile.
- The Oak Ridge National Laboratory Research Reactor (ORR): A General Description
- Report issued by the Oak Ridge National Laboratory discussing the Research Reactor (ORR). General descriptions of the ORR are presented. This report includes tables, and illustrations.
- Umohoite from the Lucky Mc Mine, Fremont County, Wyoming
- The following report describes the study of the hydrous uranium-molybdenum mineral umohoite discovered in the Lucky Mc mine, Wyoming.
- Theory of Self-Excited Mechanical Oscillations of Helicopter Rotors with Hinged Blades
- Report presenting vibrations of rotary-wing aircraft, which may derive their energy from the rotation of the rotor rather than from the air forces. The theory includes the effects of unequal stiffness of the pylon for deflections in different directions and the effect of damping in the hinges and in the pylon. Some areas of further investigation include polar symmetry and two blade cases.
- A Description of a Shock Wave in Free Particle Hydrodynamics with Internal Magnetic Fields
- 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."
- An analog computer study of several stability augmentation schemes designed to alleviate roll-induced instability
- 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."
- Exploratory Investigation of the Effect of Wing Slots and Leading-Edge Slats on the Longitudinal Stability Characteristics of a 45 Degree Sweptback Wing-Fuselage Configuration
- Report presenting an exploratory investigation to determine the effects of wing slots on the longitudinal stability characteristics of a 45 degree sweptback wing-fuselage combination. Results regarding pitching-moment characteristics and lift and drag characteristics are provided.
- Low-speed pressure-distribution investigation of a thin-delta-wing-fuselage model having double slotted flaps and spoilers
- Report presenting an investigation in the 300 mph 7- by 10-foot tunnel to determine the chordwise and spanwise load distribution on a thin 60 degree delta wing-fuselage model with double slotted flaps and spoilers mounted on the flap. The results are presented in the form of lateral aerodynamic characteristics of the plain-wing and double-slotted-flap configurations and as normal-force coefficients and pitching-moment coefficients of the wing, vane, flap, and spoiler, sample pressure plots, sample span-load distributions, tabulated pressure coefficients, and tabulated section normal-force coefficients and section pitching-moment coefficients.
- Free-Flight Experience of the Lateral Stability Characteristics at Low Lift of a 45 Degree Swept-Wing Rocket-Propelled Model Equipped With a Nonlinear Yaw-Rate Damper System at Mach Numbers From 0.76 to 1.73
- Report discussing a low-lift lateral stability investigation with a rocket-propelled model of a 45 degree swept-wing-airplane configuration equipped with an auxiliary yaw-rate damper system at a range of Mach numbers. Results indicated that the system was nonlinear due to a large dead spot in the system. The primary effect of the system was to increase the damping of lateral oscillations.
- Progress Relating to Civilian Applications During January, 1957
- A report which investigates the effect of irradiation on the thermal conductivity of uranium. Thermal-conductivity measurements are made on clad uranium specimens prior to irradiation.
- A Brief Review of thermal Gradient Mass Transfer in Sodium and NaK Systems
- The fact that material transport does occur under conditions of finite temperature difference in a flowing molten metal system was established. The rate mass transfer was thought to be either diffusion limited or solution rate limited. It is believed that the mass transfer of structural materials in Na or NaK systems is solution rate limited. The limiting process has not been qualitatively or quantitatively confirmed for the Inconel-Na or Inconel-NaK system. Increasing the maximum system wall temperature increases the amount of mass transfer, at least above 1300 deg F. The effect of the total temperature difference across the system on the amount of mass transfer was determined.
- Permeability variation of a taper-rolled wire cloth
- Report presenting the cloth permeability of rolling a tapering thickness on a 20x200-mesh stainless-steel wire clothing investigated experimentally. The application of the cloth was for the shell of a transpiration-cooled turbine blade operating at gas and shell temperatures of 2500 and 10000 degrees Fahrenheit. Results regarding the taper-rolled cloth and comparison of taper-and flat-rolled samples are provided.
- Impact-Loads Investigation of Chine-Immersed Models Having Concave-Convex Transverse Shape and Straight or Curved Keel Lines
- Note presenting an investigation of three narrow-beam models of concave-convex transverse shape and having, respectively, a straight keel, a curved bow, and a curved stern tested at the Langley impact basin as part of a larger study of hydrodynamic impact loads on chine-immersed bodies of heavy beam loading. Testing occurred over a wide range of trim and initial-flight-path angles. Results regarding the transverse curvature, longitudinal curvature, rough water, and observations on the constant-force-type bottom.
- Preliminary Investigations for an Advanced Engineering Test Reactor
- Study carried out to determine a suitable reactor system or systems for the testing of water, gas, and liquid-metal cooled fuel assemblies.
- Effect of Pressure Differentials on Deflection of the Outer Fuel Plates of Brazed APPR Fuel Elements
- One of the considerations in designing a flat plate fuel element is the resistance of the fuel plates, especially the outer plates in the fuel plate array, to deflection and permanent deformation as a result of pressure differentials. An investigation was recently initiated wit the objective of obtaining preliminary information on the APPR-type fuel element to determine the effect of pressure differentials on the outer plates in the fuel assembly. The APPR-1 fuel element consists of 18 flat composite stainless steel fuel plates, joined to grooved 50 mil thick type 304L stainless steel side plates by brazing with Coast Metals N. P. alloy.
- Summary of 65-Series Compressor-Blade Low-Speed Cascade Data by Use of the Carpet-Plotting Technique
- "The carpet-plotting technique is presented in this paper as a more useful and concise method of summarizing cascade data on the NACA 65-series compressor blades given in NACA Technical Note 3916. Carpet plots included permit the selection of the blade camber and the design angle of attack required to fulfill a design vector diagram. Other carpet plots provide means for the prediction of off-design turning angles" (p. 1).
- Summary of 65-Series Compressor-Blade Low-Speed Cascade Data by Use of the Carpet-Plotting Technique
- Carpet plots included permit the selection of the blade camber and the design angle of attack required to fulfill a design vector diagram. Other carpet plots provide means for the prediction of off-design turning angles.
- Ditching investigations of dynamic models and effects of design parameters on ditching characteristics
- 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."
- Spontaneous Flammability of Pentaborane and Pentaborane-3-Methylpentane Blends
- Memorandum presenting a study of the spontaneous flammability of pentaborane and pentaborane-3-methylpentane blends. The behavior of the substances in air and in liquid and vapor states was studied. Results regarding conditions under which pentaborane did not ignite and conditions under which pentaborane did ignite are provided.
- Preliminary Investigation of the Combustion of Pentaborane and Diborane in a Turbojet Combustor at Simulated Altitude Conditions
- Report presenting an investigation to determine the combustion characteristics of pentaborane and diborane in a turbojet combustor. Four different test conditions were explored, which varied in inlet total pressure, temperature, and simulated flight conditions. Results regarding the combustor itself and performance of diborane fuel at high altitude are provided.
- Time Behavior of Fuel Concentrations in Single-Region Reactors Containing U-233, U235, Th-232 and Fission Product Poisons
- Analytical expressions were obtained for the time behavior of fuel concentrations and fuel-feed rates in single-region, spherical, UO3-ThO2-D2O reactors.
- Notes on the Relationship of Uranium Mineralization and Rhyolite in the Marysvale Area, Utah
- From 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.
- Investigative drilling in the Bee area, White Canyon, San Juan County, Utah
- Discussing holes drilled in order to evaluate the uranium potential of the Bee area in San Juan County, Utah.
- Methods for obtaining desired helicopter stability characteristics and procedures for stability predictions
- A report in two parts: one is a brief review of methods available to helicopter designers for obtaining desired stability characteristics by modifying airframe design and the other is a review of some of the methods of predicting rotor stability derivatives.
- Effect of HRT Core Sample Holder Upon Core Flow Pattern and Pressure Drop
- The measured pressure drop across the reactor core, with the sample holder in place, is 6.9 psi, more than twice the estimated value. Better estimates, based on more rigorous mathematical analysis, should be possible for future problems of this type. The 2% density difference which produced the relatively high velocity of approximately 1 fps, in this experiment, will result from a temperature difference of about 8 C. It is concluded that the bulk fluid temperature near the sample holder will be less than 8 C above the average temperature at the same elevation in the core.
- Use of main-inlet bypass to supply ejector exhaust nozzle at supersonic speeds
- Report presenting an analysis to evaluate the effectiveness of supplying secondary airflow for an ejector exhaust nozzle by bypassing from the main inlet. If optimum weight flow is maintained, the performance of the system is about the same as for ejectors supplied by fixed auxiliary inlets up to Mach number 3.0.
- Systematic two-dimensional cascade tests of NACA 65-series compressor blades at low speeds
- A two-dimensional low-speed porous-wall cascade tunnel investigation has been conducted to establish the performance of the NACA 65-series compressor blade sections over the useful range of inlet angle, solidity, and section camber. Design points for optimum high-speed operation are presented. The loading limitation is determined for some conditions. Trends of section operating range with increasing section camber are determined for the four inlet angles tested.
- Experimental Investigation of a Method of Wave-Drag Reduction for Combinations Employing Quasicylindrical Bodies and Swept Wings at Supersonic Speeds
- "Axisymmetric and nonaxisymmetric body distortions designed by the method of NACA TN 3722 were tested to determine the amount of wave-drag reduction obtainable when applied to swept-wing-body combinations over a Mach number range of 1.39 to 1.97. Two wings of aspect ratios 1.33 and 2.67 were tested on different bodies. Both the axisymmetric and nonaxisymmetric distortions produced drag reductions" (p. 1).
- Spectroscopy of High-Temperature Systems
- Report discussing a study aiming to find which electronic state of the C2 molecule is the groud state.
- Effectiveness at transonic speeds of flap-type ailerons for several spanwise locations on a 4-percent-thick sweptback-wing-fuselage model with and without tails
- Report presenting a transonic investigation in the 16-foot transonic tunnel to determine the effects of spanwise location of a flap-type aileron on the lateral characteristics of a 4-percent-thick sweptback-wing-fuselage model. Results regarding the effect of aileron spanwise position on roll and lift effectiveness, tail effects, and effect of spanwise aileron position on complete model rolling-moment characteristics are provided.
- Uranium-bearing carbonaceous nodules of southwestern Oklahoma
- This paper concerns work done by the U.S. Geological Survey on behalf of the Division of Raw Materials of the U.S. Atomic Energy Commission.
- Effects of Radon in Drill Holes on Gamma-Ray Logs
- A report about drill holes in uranium in the Todilto limestone of Late Jurassic age near New Mexico which does not yield duplicate gamma-ray logs when probed at different times.
- Capillary Flowmeter
- The HRT leak detector system consists of four headers each of which are connected on one side to a common supply of pressurized water and on the other side by individual tubing to the ring grooves of approximately twenty flanges. There are two methods of detecting the loss of water that are particularly applicable to the HRT: (1) By the loss of pressure in a constant volume system; (2) By the measurement of flow from a constant pressure system. It was determined to investigate the second method which requires a flowmeter capable of measuring flows of .5 cc or less of water per hour. The experiment flowmeter constructed performed almost exactly as the design calculations predicted.
- Zero-Lift Drag of a Large Fuselage Cavity and a Partially Submerged Store on a 52.5 Degree Sweptback-Wing-Body Configuration as Determined From Free-Flight Tests at Mach Numbers of 0.7 to 1.53
- Report presenting a free-flight investigation of a rocket-propelled model at a range of Mach numbers from 0.7 to 1.53 to determine the drag at zero lift of a configuration with a large fuselage cavity and partially submerged store. Testing was performed out of a desire to determine if large stores can be attached to aircraft wings without negatively affecting the aerodynamic properties. Results regarding total drag and pressure drag are provided.
- Frequency Response of Weighted Voids VS. Power
- A method for calculating the frequency response of weighted voids (proportional to reactivity of steam voids) as a function of reactor power is presented.
- Differential equations of motion for combined flapwise bending, chordwise bending, and torsion of twisted nonuniform rotor blades
- 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. These terms are largely coupling-type terms associated with the centrifugal forces. Methods of solution of the equations of motion are indicated by selected examples.