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Analysis of rocket, ram-jet, and turbojet engines for supersonic propulsion of long-range missiles 1: rocket-engine performance
Report presenting theoretical performance characteristics and estimates of effective specific impulse and weight for rocket engines serving a main and booster power plants for missiles. The fuels used included ammonia-fluorine and JP4-oxygen propellants. At extremely high altitudes, the specific impulse depends primarily on the expansion ratio.
Path of Triple Point for spherical Shocks Above a Rigid Plane
Paths of trip points of Mach reflections produced by 0.5-oz pentolite detonations have been observed for various burst heights. The slopes, Y, at points on the curved path are found to vary from values of Y predicted from plane shock wave data. This discrepancy is attributed to the shock strength conditions at the early inception of the Mach reflection, which later influence the triple point equilibrium, and in lesser degree to radius of curvature effects.
Reconnaissance of Red Rock Valley, Apache County, Arizona
Abstract: Reconnaissance of Red Rock Valley was begun on December 10, 1953, and completed on February 11, 1954. The mines in the region were investigated and all exposures of Salt Wash were walked. Paleostream directions and alterations of the sandstones were observed and recorded on a base map. No important new mineralization was discovered-and the area is considered to be of no commercial significance if judged by the outcrops alone. However, a vast amount of Salt Wash lies at slight depth directly to the east of the investigated area.
Corrosion of Type 347 Stainless Steel in the Uranium-Derby Pickle Bath
Abstract: In one of the final stages of the process at the Mallinckrodt Uranium Refining Center, a 45 per cent nitric acid solution at about 170 F is used to pickle the calcined magnesium fluoride scale off the uranium derbies. The increase in the fluoride-ion content of the bath tends to promote corrosion of the Type 347 stainless tanks. This attack becomes excessive if 0.3 g/liter of fluoride ion or more is present. It was found that if aluminum ion is added to the solution the corrosiveness of the bath can be controlled. Two or three times as much aluminum ion as fluoride ion present is found satisfactory at 170 F. Indications are that the tying up of the fluoride-ion by the complexion [AlF6]8 is responsible for the corrosion control.
Longitudinal Control Characteristics of a 1/20-Scale Model of the Convair F-102 Airplane at Transonic Speeds
"The effects of elevator deflections from 0 degrees to -20 degrees on the force and moment characteristics of a 1/20-scale model of the Convair F-102 airplane with chordwise fences have been determined at Mach numbers from 0.6 to 1.1 for angles of attack up to 20 degrees in the Langley 8-foot transonic tunnel. The configuration exhibited static longitudinal stability throughout the range tested, although a mild pitch-up tendency was indicated at Mach numbers from 0.85 to 0.95. Elevator pitch effectiveness decreased rapidly between the Mach numbers of 0.9 and 1.0, however, no complete loss or reversal was indicated for all conditions tested" (p. 1).
An assessment of the airplane drag problem at transonic and supersonic speeds
Report presenting the airplane drag problem at transonic and supersonic speeds. The area rule is shown to be a powerful tool that provides guidance for designers in selecting aerodynamic features compatible with low wave drag. Analytical methods have been developed that permit quantitative evaluation of the wave-drag level likely to be experienced with a given design.
Effect on Drag of Longitudinal Positioning of Half-Submerged and Pylon-Mounted Douglas Aircraft Stores on a Fuselage with and without Cavities between Mach Numbers 0.9 and 1.8
From Summary: "The effect on drag of positioning symmetrically mounted Douglas Aircraft Company, Inc. stores in pairs on a parabolic fuselage of fineness ratio 10.0 has been determined by flight tests of rocket-propelled, zero-lift models through a range of Mach number from 0.9 to 1.8. The stores were mounted in half-submerged positions and on pylons and were tested in three longitudinal locations on the fuselage with the forward position being located at the maximum diameter of the fuselage. The effects on drag of removing the half-submerged stores or extending them outward on pylons also was investigated by tests of models with half-submerged-store cavities on the fuselage. Two pylons differing in airfoil section and thickness were tested at the forward position of the stores on the fuselage with cavities."
An Enhanced Magnetic Mirror Machine
Abstract: "A dc magnetic mirror machine has been built and tested by the ARC Research Group. Radiofrequency enhancement has been included in the design through the use of rf plates in the vacuum chamber of the machine. For the proton beams of the order of 1[mu]a, the mirror action has been observed as a function of both the rf voltage and the magnitude of the mirror field relative to the main magnetic field. Current measurements were performed with the aid of a Faraday cup with suitable bias grids."
Exact solutions of laminar-boundary-layer equations with constant property values for porous wall with variable temperature
From Summary: "Exact solution of the laminar-boundary-layer equations for wedge-type flow with constant property values are presented for transpiration-cooled surfaces with variable wall temperatures. The difference between wall and stream temperature is assumed proportional to a power of the distance from the leading edge. Solutions are given for a Prandtl number of 0.7 and ranges of pressure-gradient, cooling-air-flow, and wall-temperature-gradient parameters. Boundary-layer profiles, dimensionless boundary-layer thicknesses, and convective heat-transfer coefficients are given in both tabular and graphical form. Corresponding results for constant wall temperature and for impermeable surfaces are included for comparison purposes."
A Flight Investigation of the Effects of Inclination of the Principal Axis of Inertia on the Dynamic Lateral Stability of the Republic XF-91 Airplane
Report presenting a flight investigation to determine the effect that inclination of the principal axis of inertia as produced by varying the wing incidence angle has on dynamic lateral stability of the Republic XF-91 airplane. Results indicated that the wing incidence angle had a negligible effect on the period of lateral oscillation.
Some internal-flow characteristics of several axisymmetrical NACA 1-series nose air inlets at zero flight speed
Report presenting testing of six 1-series axisymmetrical nose air inlets of 8-inch maximum diameter at zero forward velocity in the 8-foot transonic tunnel. Total-pressure surveys, pressure-recovery measurements, and flow-visualization studies were made through a range of mass-flow ratio from below the normal operating range to choking. Results indicate that the performance characteristics of the inlets with differing amounts of roundness varied widely.
Zero-Lift Drag of the Chance Vought Regulus II Missile at Mach Numbers Between 0.8 and 2.2 as Determined From the Flight Tests of Two 0.12-Scale Models
Report discussing testing of two models of the Chance Vought Regulus II missile to determine its drag characteristics for a range of Mach numbers. The measured total-drag-coefficient data was extrapolated to external-drag-coefficient data and presented.
Bibliography of NACA Reports Related to Aircraft Control and Guidance Systems January 1949 - April 1954
This report lists pertinent NACA papers presenting research results which have a direct bearing on control system design and performance for both piloted and automatically controlled aircraft. Limited reference is also made to NACA reports on aircraft engine controls and to research techniques and instrumentation pertinent to the study of control systems and aircraft dynamics in flight. Reports published between January 1949 and April 1954 are listed in chronological order and cross referenced.
Compatibility of Pentaborane With Materials Used for Seals, Gaskets, and Construction
Memorandum presenting the compatibility of pentaborane with aluminum foil, 24S-T and 17S-T aluminum, and 50-50 tin-lead solder in the range of -30 to -50 degrees F for 7 hours, at 90 degrees F for 6.5 hours, and at 70 degrees F for 28 days. Results were evaluated by determination of the loss in weight after the test period, metallographic inspection, and comparison with blanks carried through test conditions without exposure to the liquid. The evaluation of results was made by visual inspection and physical tests of dimensional stability, tensile strength, elasticity, and gain or loss of weight.
High-Temperature Lubricants and Bearings for Aircraft Turbine Engine
Memorandum presenting a consideration of the problems, research status, and future possibilities for high-temperature lubricants and bearings for aircraft turbine engines. The greater heat loads imposed by high-performance engines and practical limitation on cooling will result in increased operating temperatures for bearings and lubricants.
Performance of a supersonic rotor having high mass flow
Report presenting testing of a 14-inch supersonic mixed-flow rotor with a supersonic leading edge and an inlet radius ratio of 0.52, which was designed for impulse operation and uniform work output and tested in Freon-12. Results regarding overall rotor performance, entrance flow, distribution of static pressure on the casing, and exit flow are provided.
Utex Ore Stockpiled at Monticello
A program of bench scale leaching and ion exchange testing for the recovery of uranium from liquors produced by leaching Utex ore (Monticello Stockpile 28) was conducted at Monticello, Utah from July 1953 to April 1954.
Effect of Process Variables on Graphite Purity
Results of four experimental heats run at the end of the G-5 contract in the National Carbon Company Clarksburg production furnaces.
Investigation of a Flow Deflector and an Auxiliary Scoop for Improving Off-Design Performance of Nose Inlets
Memorandum presenting an investigation of flow deflectors which extend forward of an open-nose inlet for improving positive angle-of-attack performance and auxiliary scoops for use at off-design engine air-flow conditions at low angles of attack to determine their effect on net inlet performance. The results show that a deflector inlet and a basic open-nose inlet have about the same net performance at low angles of attack although the flow steadiness characteristics of the deflector inlet are the less desirable.
Investigation of a 1/4-Scale Model of the Republic F-105 Airplane in the Langley 19-Foot Pressure Tunnel: Longitudinal Stability and Control of the Model Equipped with a Supersonic-Type Elliptical Wing-Root Inlet
Memorandum presenting development tests on a 1/4-scale model of the Republic F-105 airplane in the 19-foot pressure tunnel. The tests in this particular report include longitudinal stability and control tests of the basic design provided by the contractor, tests of various modifications designed to improve the stability characteristics of the model with the trailing-edge flaps deflected, brief exploratory lateral-control and rudder-effectiveness tests, and stall studies and duct air-flow measurements.
Table Top 1 Circuitry
Abstract: "This is a detailed report on the circuitry, the electrical components, and the electrical engineering problems of Table Top I, the 140-kilojoule experimental model of a magnetic mirror machine being developed at the University of California Radiation Laboratory, Livermore."
Pilot Plant Tests on Anaconda Ore From the Grants District, Grants, New Mexico
A series of pilot plant runs were made on the Jackpile ore, Jackpile mixed blend, Jackpile-Poison Valley blend, and Jackpile-Arrowhead blend.
Two Stage Leaching Tests on Utex Ore
Introduction: The object of this test work was to determine the practicability of a two-stage leach using ion-exchange as the method of uranium concentration.
Aerodynamic Characteristics at High and Low Subsonic Mach Numbers of the NACA 0012, 64₂-015, and 64₃-018 Airfoil Sections at Angles of Attack from -2 Degrees to 30 Degrees
An investigation has been made in the Langley low-turbulence pressure tunnel of the aerodynamic characteristics of the NACA 0012, 64(sub 2)-015, and 64(sub 3)-018 airfoil sections. Data were obtained at Mach numbers from 0.3 to that for tunnel choke, at angles of attack from -2deg to 30deg, and with the surface. of each airfoil smooth-and with roughness applied at the leading edge.The Reynolds numbers of the tests ranged from 0.8 x 10(exp 6) to 4.4 x 10(exp 6). The results are presented as variations of lift, drag, and quarter-chord pitching-moment coefficients with Mach number.
Evaluation of Methods of Brazing Aluminum Spacing Fins to Flat-Plate Aluminum-Clad Fuel Elements
Abstract: "Four brazing methods and one other joining process were evaluated for the joining of aluminum spacer fins to flat-plate aluminum-clad fuel elements. None of these methods appear completely suitable for use in a mass-production operation. Furnace brazing and salt-bath brazing were most promising. However, the mechanical problems involved in the application of either process deter their recommendation. Resistance brazing and torch-brazing were proven impractical. The great difference in mass between the two pieces being joined prevents the use of either the resistance or torch method. Pressure bonding is not applicable because of the excessive deformation of parts being joined."
The Production of Deuterons in High-Energy Nucleon Bombardment of Nuclei, and Its Bearing on Nuclear Charge Distribution
Thesis discussing the study of deuterons produced at wide angles to a beam of 300 Mev neutrons and a beam of 300 Mev protons. It was observed that the deuterons are formed by "a two step process in which the incident nucleon, or its collision partner, is scattered and then picks up in the same nucleus." Some tritons are also observed, and it is thought that they are formed by the same process as the deuterons. From these findings, the author concludes that "for heavy nuclei, there is a nuclear skin rich in neutrons."
The Experimental Application of Neutron Capture Therapy to Glioblastoma Multiforme
The rapid development of the field of atomic energy during the past few years now permits the exploration of applications to medicine involving new concepts in the treatment of cancer. One such has been the study of neutron capture therapy which is being developed at the Brookhaven National Laboratory.
Sample Collector and Counter
From abstract: "An apparatus is described which automatically separates a flow of drops into a series of equal samples."
Zero-Lift Drag of the Chance Vought Regulus II Missile at Mach Numbers Between 0.8 and 2.2 as Determined From the Flight Tests of Two 0.12-Scale Models: TED No. NACA AD 398
Report presenting testing of two scale models of the Chance Vought Regulus II missile to investigate its drag characteristics for a range of Mach numbers from 0.8 to 2.2. Due to some of the differences between the observed drag values and previous testing, the exact drag level of the configuration tested is still in question. Results regarding total drag and external drag are provided.
Laboratory Scale Abrasive Tests on Ion Exchange Resins
A laboratory scale test was devised to determine the relative physical stability of ion exchange resins designed for use in the resin-in-pulp process. The test was applied to four samples of resins.
Procedure for Generation of Boron Trifluoride Gas
"The purpose of this specification is to describe a procedure for preparation of pure BF3 gas, suitable for use in BF3 proportional neutron counters."
Free-Flight Tests of 0.11-Scale North American F-100 Airplane Wings to Investigate the Possibility of Flutter in Transonic Speed Range at Varying Angles of Attack
"Free-flight tests in the transonic speed range utilizing rocketpropelled models have been made on three pairs of 0.11-scale North American F-100 airplane wings having an aspect ratio of 3.47, a taper ratio of 0.308, 45 degree sweepback at the quarter-chord line, and thickness ratios of 31 and 5 percent to investigate the possibility of flutter. Data from tests of two other rocket-propelled models which accidentally fluttered during a drag investigation of the North American F-100 airplane are also presented. The first set of wings (5 percent thick) was tested on a model which was disturbed in pitch by a moving tail and reached a maximum Mach number of 0.85. The wings encountered mild oscillations near the first - bending frequency at high lift coefficients" (p. 1).
Lawrence Radiation Laboratory Medical and Health Physics Quarterly Report: April - June 1954
The following quarterly report covers the period between April, May and June of 1954. The reports presented in this document discusses subjects of medical health and physics such as: biological studies of radiation effects, the metabolic properties of various tracer materials, radiation chemistry, health chemistry, and health physics.
Additional Extraction and Ion Exchange Studies of Temple Mountain District Ores
Uranium extraction of 95% has been obtained from samples of Temple Mountain ore by a cyclic test procedure in which the new feed was not roasted. This procedure involved acid leaching the ore, flotation and roasting of the carbonaceous material, and acid leaching the roaster calcine.
Development of an Ion Exchange Process for the Recovery of Vanadium
A process for recovering vanadium from acid leach liquors by ion exchange using either columns or resin-in-pulp has been developed. The process is economically feasible, and operating techniques were developed which made the process practical from an operating standpoint. The theory, chemistry, and characteristics of the vanadium ion exchange process are fully discussed.
Ion Exchange of Grants Acid Leach Liquors
This report summarizes the test work done to evaluate the column ion exchange process for extraction or uranium from Grants acid leach liquors.
Ion Exchange Tests on Liquor and Pulps Produced From Utex Ores
Leach liquors produced from Utex ore by cold leaching, hot leaching and pugging proved amenable to the ion exchange process. In addition, a resin-in-pulp system was operated using the Lucite Winchester sells on Utex pulp produced by cold leaching.
Quarterly Progress Report on Reactor Development: 4000 program
Report issued by the Argonne National Laboratory discussing progress made on reactor development. Progress made on the core, pressure vessel and shield, and the power plant are presented. This report includes tables, and illustrations.
Abernathyite, a New Uranium Mineral of the Metatorbernite Group
A report about a new uranium mineral from the Fuemrol No. 2 mine, Emery County, Utah, named abernathyite.
Aerodynamic characteristics of the NACA 64-010 and 0010-1.10 40/1.051 airfoil sections at Mach numbers from 0.30 to 0.85 and Reynolds numbers from 4.0 x 10(exp. 6) to 8.0 x 10(exp. 6)
Report presenting an investigation in the low-turbulence pressure tunnel to determine the aerodynamic characteristics of NACA 64-010 and 0010-1.10 airfoil sections. The investigation covered a range of Mach and Reynolds numbers.
Airborne Radiometric Survey, Kern and San Bernardino Counties, California, and Nye County, Nevada
Abstract: Approximately 10 square miles of mainly igneous rocks of the western Mojave Desert were covered by this airborne radiometric survey in 173 hours of flying time.
Airborne Reconnaissance Survey of Northwestern Arizona (Arizona Strip) and Southwestern Utah
Abstract: From December 1953 to May 1954 an extensive airborne reconnaissance program was conducted in northwestern Arizona (Arizona Strip) and southwestern Utah. Five surface anomalies were detected, one of which has possible commercial value. All anomalies are within the boundaries of National Park Service jurisdiction, consequently, this report is not for public distribution until clearance is obtained from the National Park Service. A preliminary airborne reconnaissance program was also conducted in the Richfield area. No anomalies were discovered.
Airfoil section characteristics at high angles of attack
From Introduction: "The present paper is concerned with certain aspects of the behavior of airfoil sections at high angles of attack with particular emphasis on the needs of the helicopter designer."
An analysis of shock-wave cancellation and reflection for porous walls which obey an exponential mass-flow pressure-difference relation
From Introduction: "In the present report a generalized exponential relation between pressure difference and normal flow is assumed which adequately describes porous-wall calibrations obtained experimentally at the Ames Laboratory and those presented in references 1 and 3."
An analysis of the stability and ultimate bending strength of multiweb beams with formed-channel webs
From Introduction: "The purpose of the present paper is to develop a simple method of calculating both the stress at which initial wrinkling occurs in muti-web beams and the ultimate bending strength of beams which are susceptible to this mode of instability."
Bending Tests on Box Beams Having Solid- and Open-Construction Webs
"The results of an exploratory experimental investigation of the effects of replacing alternate webs in a multiweb beam by open, post-stringer construction are reported. Post-stringer (either upright or inclined posts) construction is shown to perform the function of comparable-weight, solid, fabricated webs in the stabilization of the compression cover of a beam in bending both before and after buckling" (p. 1).
Boiling Homogeneous Reactor for Power and U233 Production: Reactor Design and Feasibility Problem
Summary report of the study, research, problems and solutions developed in the final ten-weeks period of the school term for a group of men representing various scientific and engineering fields.
A Detector for Sub-Surface Cracks
From abstract: "An instrument was developed to detect cracks within 1/8 inch of the surface of cylindrical uranium fuel slugs. The instrument measures changes in eddy currents that are induced at a frequency of 2 KC."
Determination of flame temperatures from 2000 to 3000 K by microwave absorption
Report presenting equations derived for the measurement of flame temperatures from the attenuation of a microwave beam by temperature-induced free electrons from chemical elements introduced in the flame. The free electron collision frequency and an effective ionization potential for four alkali elements were determined experimentally. Results regarding the blast burner, liquid propellant burner, and effects of addition of salt solutions on flames are provided.
Effects of chemically active additives on boundary lubrication of steel by silicones
Report presenting an investigation of a method of improving the lubricating quality of silicones by providing chemically active additives. The conventional additives were not effective, but more active materials like peroxide did provide effective lubrication.
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