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Preliminary photomicrographic studies of fuel sprays
Photomicrographs were taken of fuel sprays injected into air at various densities for the purpose of studying the spray structure and the stages in the atomization of the fuel. The photomicrographs were taken at magnifying powers of 2.5, 3.25, and 10, using a spark discharge of very short duration for illumination. The results indicate that the theory advanced by Dr. R. A. Castleman, Jr., on the atomization of fuel in carburetors may also be applied to the atomization of fuel sprays of the solid-injection type. The fuel leaves the nozzle as a solid column, is ruffled and then torn into small, irregular ligaments by the action of the air. These ligaments are then quickly broken up into drops by the surface tension of the fuel. The photomicrographs also show that the dispersion of a fuel spray at a given distance from the nozzle increases with an increase in the jet velocity or an increase in the air density. The first portions of fuel sprays injected from an automatic injection valve into air at atmospheric density have a much greater dispersion than the later portions, but this difference decreases rapidly as the air density is increased.
Preliminary Physics and Heat Transfer Design Calculations for a Rocket Fuel Test Reactor (RFTR)
From Introduction: "This report will present and discuss the results of a preliminary investigation for a facility which could be utilized to test nuclear rocket fuel elements at operating conditions."
Preliminary Plan for Treating Mixed Waste
A preliminary waste treatment plan was developed for disposing of radioactive inorganic liquid wastes that contain hazardous metals and/or hazardous acid concentrations at Argonne National Laboratory. This plan, which involves neutralization and sulfide precipitation followed by filtration, reduces the concentration of hazardous metals and the acidity so that the filtrate liquid is simply a low-level radioactive waste that can be fed to a low-level waste evaporator.
Preliminary Plasma Spectrometric Analyses for Selected Elements in some Geothermal Waters from Cerro Prieto, Mexico
Abstract: As part of a cooperative study with the Geologic Division of the U.S. Geological Survey, water samples collected from geothermal power production wells at Cerro Prieto, Mexico, were analyzed for selected elements by d.c. argon plasma emission spectroscopy. Spectral interferences due to the presence of high concentrations of Ca, Si, Na, and K in these waters affected the apparent concentration values obtained. These effects were evaluated and correction techniques were developed and applied to the analytical values. Precipitates present in the samples at the time of analysis adversely affected the accuracy, precision and interpretability of the data.
Preliminary Reconnaissance for Uranium in Mohave County, Arizona, 1952 to 1956
This book presents reconnaissance reports for uranium deposits in Mohave County, Arizona from 1952 to 1956.
Preliminary Reconnaissance for Uranium in the Green River Basin and the Rock Springs Uplift, Sweetwater and Fremont Counties, Wyoming
Abstract: Preliminary reconnaissance for uranium in the Green River Basin and the Rock Springs Uplift revealed anomalous radioactivity northwest of Oregon Buttes in the Tipton tongue of the Green River formation and in the Cathedral Bluffs tongue of the Wasatch formation, and in the Tipton tongue in Red Creek Basin.
Preliminary Reconnaissance of the Dripping Spring Quartzite Formation in Gila and Pinal Counties, Arizona
Abstract: A four-week reconnaissance of certain portions of the mountainous area in Gila and Pinal Counties, Arizona, was undertaken in March and April, 1953, to inspect accessible outcrops of Dripping Spring quartzite, a pre-Cambrian formation which has lately attracted the interest of the Atomic Energy Commission by the discovery of two separate occurrences of uranium mineralization. Although no new deposits were found during the field work, a more thorough examination of the quartzite seems warranted. Recommendations for further prospecting by airborne and ground methods are presented in this report, and are based largely on observations made during the brief visit.
Preliminary Reconnaissance Work in the Rattlesnake Area, Apache County, Arizona
From introduction: The Bluff-Salt Wash contact was mapped on aerial photographs. Mines and prospects were also plotted on the photos. The mines and prospects were studied and a brief description of the mineralization and its occurrence was written. These field notes, which will be given to Hatfield and party, contain data on the presence of carbon and fossil logs, lithology of the gangue rock, sedimentary structures, etc. Regional structure and evidence for igneous activity were also noted.
Preliminary Regional Mapping in the Ruby Quadrangle, Arizona
Abstract: Reconnaissance mapping in the Ruby Quadrangle, Arizona, indicates the existence of a complex assemblage of volcanic rocks and associated sediments, divisible into a younger and older series.
Preliminary report of experimental investigation of ram-jet controls and engine dynamics
No Description Available.
Preliminary Report of Reconnaissance for Uraniferous Granitic Rocks in Montana, Idaho, Oregon, Washington, and California
From abstract: A reconnaissance to determine the uranium content of granitic rocks in the western states was made during parts of October and November 1951. The paucity of our knowledge of the granitic rocks that are most likely to contain significant quantities of uranium has prevented all but a very general isolation of areas or types of granitic rocks for reconnaissance examination.
Preliminary Report of Reconnaissance in the Cameron Area, Arizona
Introduction: A radiometric airborne reconnaissance of the Cameron, Arizona, district was conducted in the late fall of 1952 and early winter of 1953. Flying was carried out under the direction of the Salt Lake Exploration Branch of the Atomic Energy Commission, Division of Raw Materials. Airborne equipment and ground personnel were provided through the Technical Services Branch of the Grand Junction Exploration Division.
Preliminary Report of the Geohydrology Near Cypress Creek and Richton Salt Domes, Perry County, Mississippi
From purpose and scope: This report describes geohydrologic conditions in the Mississippi salt-dome basin in the area of the Cypress Creek and Richton salt domes. It incorporates data from the area characterization investigations in Mississippi and provides a foundation of technical information for subsequent, more detailed hydrologic investigations.
Preliminary Report of the Results of Reconnaissance for Uraniferous Materials in the Powder River Basin, Wyoming
From introduction: During three months of the summer of 1952, a geologic and radiometric reconnaissance examination for uraniferous materials in the peripheral parts of the Powder River structural basin in northeastern Wyoming (fig. 1) was made by the Survey on behalf of the Division of Raw Materials of the U. S. Atomic Energy Commission. The purpose was to find, describe, locate, and sample deposits of uraniferous or radioactive materials other than those in the central part of the Powder River Basin in the general vicinity of the Pumpkin Buttes.
Preliminary Report on 1952 Field Investigations in Wet Mountains, Colorado
From page 3: A metallogenic province containing thorium in veins in pre-Cambrian rocks along the western slope of the Wet Mountains, Colo. found by the Reconnaissance Group of the U. S. Geological Survey during the summer of 1950,was revealed by the discovery during fiscal-years 1951-1952 of seventeen radioactive deposits scattered along a north-northwest linear distance of twenty miles. All the thorium occurrences were found within terrain that has never been geologically mapped. Three of the most promising localities were mapped at 1:1,200, and a diamond-drilling program was conducted at Haputa ranch.
Preliminary Report on 1952 Investigations in the Colorado Front Range
From abstract: Five mines in north-central Clear Creek County- Golden Calf, Gomer, Martha E., Golden Glen, and Diamond Mountain--have high anomalous radioactivity and are considered potential sources of uranium.
Preliminary report on a study of separated flows in supersonic and subsonic streams
No Description Available.
Preliminary Report on a Uranium Occurrence and Regional Geology in the Cherry Creek Area, Gila County, Arizona
Introduction: A reconnaissance of the Black Brush property was made by geologists of the Atomic Energy Commission in March, 1955. This anomalous area was located by an earlier airborne radiometric survey. the examination consisted of preliminary sampling and surface and underground radiometric traversing.
Preliminary report on British commercial aeronautics
This report briefly recounts the history of British commercial aviation and then goes on to look at the equipment, governmental relations, operations, and air traffic.
Preliminary Report on Diamond-Drill Exploration and Plans for Additional Drilling in Long Park and Vicinity, Montrose County, Colorado
From abstract and summary: Long Park and vicinity is in T. 47 N., R. 17 W., Montrose County, Colo. The U. S. Geological Survey started a program of drilling in the area in April 1949, to find deposits that might be developed into new mines and to appraise the reserves of the area. This drilling was done during two periods of time under separate contracts.
Preliminary Report on Diamond-Drill Exploration of Part of Blue Mesa, Mesa County, Colorado
From introduction: The results of Geological Survey exploration at Blue Mesa are summarized in this preliminary report. No additional drilling is planned.
Preliminary Report on Diamond-Drill Exploration of Parts of Blue and Moon Mesas, Mesa County, Colorado
From abstract and summary: The Blue and Moon Mesa areas are about 13 miles southeast of Gateway, Mesa County, Colo. Total production of carnotite ore from the Blue and Moon Mesa areas has been about 1,000 short tons that averaged about 0.25 percent U30Oand 1.75 percent V205. Most of this production was obtained from 1940 to 1943 and in 1949. The U. S. Geological Survey explored the northern parts of these areas by diamond drilling between August 9 and December 14, 1950. The Survey drilled 113 holes, totalling 16,039 feet. This drilling was mostly wide-spaced and was done to obtain geologic information.
Preliminary Report on Diamond-Drill Exploration of the Legin Group Area, San Miguel County, Colorado
From introduction: The results of U. S. Geological Survey exploration in the Legin group area are summarized briefly in this preliminary report. No additional drilling is planned. The Legin group area comprising nine Government-owned claims, three privately owned claims and adjoining public land, is in San Miguel County, Colo. The area explored includes parts of secs. 28 and 29, T. 43 N., R. 19 W., New Mexico principal meridian (fig. 1).
Preliminary report on experimental investigation of engine dynamics and controls for a 48-inch ram-jet engine
Engine dynamics and controls data are presented for a ram-jet engine which was operated in a free-jet facility at a Mach number of 2.76 and altitudes from 68,000 to 82,000 feet. The predominant engine dynamic characteristics was dead time, with values ranging from 0.018 to 0.053 sec. The control systems were designed to hold a constant ratio of a diffuser static pressure to an inlet-cone reference static pressure. Response times and percent overshoot to fuel-flow disturbances that would have caused subcritical operation without control are included for a wide range of control settings. For all settings, the control response was fast enough (0.08 to 0.5 sec) to prevent subcritical operation.
Preliminary report on experimental investigation of engine dynamics and controls for a 48-inch ramjet engine
Experimental investigation of engine dynamics and controls for 48-inch ramjet engine in free jet facility at Mach number 2.76 and altitudes 68,000 to 82,000 feet.
Preliminary Report on Exploration in the Spud Patch Area, San Miguel County, Colorado
From introduction: From November 1949 to May 1952, the U. S. Geological Survey explored the Spud Patch area by diamond drilling to find carnotite deposits that would make new mines and to appraise the reserves of the area. Previous work and a brief outline of the general geology of the area have been reported (Bell and Icke, 1950; and Bell, 1952).
Preliminary report on flight tests of an airplane having exhaust-heated wings
No Description Available.
Preliminary report on free flight tests
Results are presented for a series of tests made by the Advisory Committee's staff at Langley Field during the summer of 1919 with the objectives of determining the characteristics of airplanes in flight and the extent to which the actual characteristics differ from those predicted from tests on models in the wind tunnel, and of studying the balance of the machines and the forces which must be applied to the controls in order to maintain longitudinal equilibrium.
Preliminary Report on Geologic Investigations in Monument Valley Area, Arizona, 1952
From introduction: A program of uranium investigations and geologic mapping on the Navajo Indian Reservation in Apache and Navajo Counties, northeastern Arizona (fig. 1) was undertaken by the U. S. Geological Survey on behalf of the Atomic Energy Commission during the field seasons of 1951 and 1952. Field work on this program has been completed and preliminary copies of the maps, which cover an area of about 700 square miles, are inclosed as part of this report. The two principal objectives of the program were to establish geologic criteria useful as guides in prospecting for uranium deposits, and to appraise the favorableness of the Shinarump conglomerate and other Triassic rocks for the occurrence of uranium deposits in order to select areas that deserve exploration for concealed deposits.
Preliminary Report on Geologic Investigations in White Canyon, San Juan County, Utah, 1952
From introduction: Field work, begun in the field season of 1951, was continued by the U. S. Geological Survey in the White Canyon area, San Juan County, Utah, from May 1 to October 28, 1952, The objectives of this work were to study the habits and character of uranium deposits in the area, to determine control and guides to ore and suitable areas for physical exploration, and to map and study the ore-bearing and adjacent strata to determine the regional geologic controls and habits of the uranium deposits, The White Canyon project is part of a regional mapping program on the Colorado Plateau being conducted by the Geological Survey on behalf of the U. S. Atomic Energy Commission.
Preliminary Report on Geologic Studies in the Capitol Reef Area, Wayne County, Utah, 1952
From introduction: This report briefly describes the geologic setting of the Capitol Reef area, uranium deposits, prospecting guides, and plans for continuation of this investigation.
Preliminary Report on Geologic Studies in the Red House Cliffs Area, San Juan County, Utah
From introduction: The main objectives of the Red House Cliffs project are to appraise the uranium possibilities of the area, to determine the areal distribution and character of the ore-bearing Shinarump conglomerate and to prepare a geologic map of the area. The purpose of this preliminary report on the Red House Cliffs project is to summarize results of the field work done from July 6, 1952, to October 31, 1952, and to present plans for future work on the project. This work was done on behalf of the U. S. Atomic Energy Commission.
Preliminary Report on Geophysical Investigations of the Deer Flat Area, White Canyon District, San Juan County, Utah
From abstract: The purpose of the survey was twofold: to determine the trend of the Hideout Channel across Deer Flat and to delineate fractures cutting through the ore deposit at the Hideout mine.
Preliminary Report on Laminar-Flow Airfoils and New Methods Adopted for Airfoil and Boundary-Layer Investigations
Recent developments in airfoil-testing methods and fundamental air-flow investigations, as applied to airfoils, are discussed. Preliminary test results, obtained under conditions relatively free from stream turbulence and other disturbances, are presented. Suitable airfoils and airfoil-design principles were developed to take advantage of the unusually extensive laminar boundary layers that may be maintained under the improved testing conditions. The results are of interest mainly in range of below 6,000,000.
Preliminary Report on Lost Creek Schroeckingerite Area, Sweetwater County, Wyoming
Introduction: This report is a summary of the field work at the Lost Creek schroeckingerite deposit, Sweetwater County, Wyo. from July 1 through November 22, 1952. The objectives of field work at Lost Creek during the report period were to obtain additional data for calculating tonnage and grade and to obtain additional information on the controls and localization of schroeckingerite. In order to accomplish these objectives the Survey continued the exploration by means of trenching, mapped all trench walls (scale 1:120), mapped the exploration area at scales of 1:2400 and 1:9600, and carried on an extensive sampling program.
Preliminary Report on Magnetogasdynamic Aspects
Report describing studies on magnetogasdynamic aspects, presented in three sections: a summary of relevant magnetofluidmechanic fundamentals; a review of relevant literature on flow modification in magnetofluidmechnics; and the results of analytical investigations on highly restricted magnetofluidmechanic flows.
Preliminary Report on Results of Field Investigations for Uraniferous Deposits in the Pumpkin Buttes Area, Johnson and Campbell Counties, Wyoming
From introduction: Geologic mapping was done in the Pumpkin Buttes area, Johnson and Campbell Counties, Wyoming, during the summer of 1952 on behalf of the Atomic Energy Commission. The objectives of the work were: to find uranium deposits, to study their distribution, habit, and occurrence, and to use such knowledge as guides in outlining areas favorable for mineralization.
Preliminary Report on Sodium Temperature Coefficients in Large Fast Reactors
Report issued by the APDA over preliminary studies conducted on temperature coefficients in fast breeder reactors. Methods and results of the studies are presented and discussed. This report includes tables, and illustrations.
Preliminary Report on Some Uranium Deposits Along the West Side of the San Rafael Swell, Emery County, Utah
From introduction: Twelve uranium-bearing deposits were examined along 30 miles of the western border of the San Rafael Swell in Emery County, Utah, from September 21 to 29, 1950. The area examined lies in Emery County, east-central Utah, along the west flank of the San Rafael anticline (Fig. 1).
Preliminary Report on the Buckhorn Claims, Washoe County, Nevada, and Lassen County, California
Abstract: Secondary uranium minerals occur along narrow silicified northeast-trending fractures in Tertiary volcanics of rhyolitic composition. Two zones containing uranium minerals are present.
Preliminary Report on the Carnotite Deposits of the Old Leyden Coal Mine, Jefferson County, Colorado
From introduction: Mapping, sampling, and radiometric reconnaissance of the uranium-bearing deposits in the Laramie formation in the vicinity of the Old Leyden coal mine, sec. 28, T. 2 S., R. 71 W., Jefferson County, Colorado (fig. 1), was completed August 10, 1951. Topographic and geologic maps were made of areas approximately 6,000 feet by 3,000 feet (scale 1:2h00), and 1,200 feet by 800 feet (scale 1:600). Underground workings at three clay mines and at the Old Leyden mine were also mapped. With the exception of the 1:600 map, which accompanies this report, these maps will be transmitted later with a more comprehensive report.
Preliminary report on the characteristics of the NACA 4400R series airfoils
No Description Available.
Preliminary Report on the Disposal of Oil-Field Brines in the Ritz-Canton Oil Field, McPherson County, Kansas
Report issued by the U.S. Bureau of Mines on the issues of disposal of crude oil and natural gas brine. Disposal methods are studied and presented. This report includes tables, maps, and illustrations.
Preliminary report on the flat-top lift curve as a factor in control at low speed
This report is concerned with the importance of the flat-top lift curve as a factor contributing to safety and control at low speed. An analysis of existing airfoil data indicated definite relations between the shape of the lift curve and certain section dimensions.
Preliminary Report on the Fundamentals of the Control of Turbine-Propeller Jet Power Plant
On the basis of the investigations so far completed on the behavior of PTL power plants under various operating conditions, in which the influence of the propeller characteristics is of considerable importance, the most important aspects of a control system for turbine-propeller jet power plants are deduced. A simple possible means for its concrete realization, which is also applicable to TL [NACA comment: TL, jet] power plants, is presented by means of examples. A control device of this kind is now being developed.
Preliminary Report on the Geology and Mineral Deposits of the Northern Elkhorn Mountains, Jefferson and Broadwater Counties, Montana
From introduction: This preliminary report details the geology and mineral deposits of the northern Elkhorn Mountains, Montana.
Preliminary Report on the Geology and Uranium Deposits at Temple Mountain and Green Vein Mesa, San Rafael Swell, Emery County, Utah
From abstract: In 1953 the U. S. Geological Survey started the present program of uranium investigations on behalf of the U. S. Atomic Energy Commission in the San Rafael Swell, Emery County, Utah. Two areas within the Swell were selected and studied; one in the vicinity of Temple Mountain and the other at Green Vein Mesa.
Preliminary Report on the Geology and Uranium Deposits of South Elk Ridge, San Juan County, Utah
From abstract: Elk Ridge is in southeastern Utah in the central part of San Juan County. It forms a conspicuous ridge on the north end of the Monument upwarp. During the summer of 1953 field work was largely restricted to South Elk Ridge, that part of Elk Ridge which is south of The Notch. Permian and Triassic sedimentary rocks crop out in the area and Jurassic and Cretaceous rocks are exposed east of the area.
Preliminary Report on the Geology and Water Resources of Central Oregon
From introduction: The observations recorded in this paper were made during a rapid reconnaissance from east to west through the central part of Oregon in the summer of 1903, and are in continuation of similar work in the same general region previously done by the author, reports concerning which have been published.
Preliminary Report on the Geology of the Tiger (Hideout) Claim, White Canyon Area, San Juan County, Utah, with Recommendations for Exploration for Geologic Information
From introduction: The purpose of the mapping was to study the habits of the uranium minerals with relation to the geologic features of the White Canyon area, The work has been done by the U. S. Geological Survey on behalf of the Atomic Energy Commission. The Tiger claim is recommended for exploration by diamond drilling to obtain geologic information on the trend, length, depth, and width of the scour channel, and the relationship of uranium and copper minerals to the Shinarump-filled channel and to fractures.