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2-Fold G.M. Coincidence Unit
Report containing a diagram of a coincidence unit, outlining resistor values and other technical specifications.
No Description Available.
8 Inch Vacuum Pump
Technical drawings of vacuum pumps and machinery for use in nuclear reactors.
8 steps in grading soybeans : under revised standards, effective September 1, 1949.
An explanation of the process used by U.S. federal grain inspectors to grade soybeans. Factors include odor, weevil or garlic infestation, moisture, weight per bushel, foreign material, mixed colors, splits, and damage.
10 M.C. Wide Band Amplefier and Scope
Technical drawing of an amplifier for a nuclear reactor.
N-17, A Delayed Neutron Emitter
The decay scheme of a 4.2 second neutron emitter has been investigated in detail. Chemical and physical evidence shows that it is N{sup 17}, which emits beta rays to a broad excited state of O{sup 17}, which then breaks up into a neutron plus O{sup 16}. The energy spectrum of the neutrons is determined by measuring the energies of the O{sup 16} recoils in a proportional counter. The neutrons have a most probable energy of 0.9 Mev, a 'half width' of less than .5 Mev, and an upper limit of about 2 Mev. {beta}-recoil coincidences are observed, as predicted by the Bohr-Wheeler theory, and the {beta}-ray energy is measured by absorption. The beta rays in coincidence with neutrons have an upper limit of 3.7 {+-} 0.2 Mev. Beta-rays directly to the ground stat of O{sup 17} are not observed because of high background effects, but should have an energy of 8.7 Mev. Some evidence is presented to show that energy is conserved in the {beta}-n transition through the broad excited state in O{sup 17}.
20-MM aircraft gun matériel M1 and M2.
"In addition to a description of the 20-mm aircraft gun matériel M1 and M2, this manual contains technical information required for the identification, use, and care of the matériel."
38 ways to cut costs in the manufacture and sale of consumers' durable goods.
Suggests cost savings strategies for manufacturers operating under war-time price regulations, with the goal of reducing their need for relief from the Office of Price Administration.
A 48-Channel Pulse Height Analyzer for Alpha Energy Measurements
No Description Available.
75-mm howitzer materiel.
This is a World War II-era technical manual for the 75mm Howitzer. It contains information on use, maintenance, assembly, and other aspects of this weapon.
85 million Americans hold war bonds.
A color image of a man's hand clenching war bonds, as the Statue of Liberty's hand holds its torch above, against a starry night sky. The man's hold on the bonds mimics the statue's hold on the torch.
100 Area monthly reports for 1947
Activities concerned with the 100 area at the Hanford plant for the period of January, 1947, are described. A chronology of pile events, tube corrosion, and scrams are included.
100-Ton Test at Trinity: Report on Earth Velocity Measurements
Apparatus, field layout, miscellaneous testing, and the method of analysis of a 100-ton test at Trinity.
200 areas contaminated particle discharge
Short communication.
234-5 Building design philosophy
This report presents the building and design philosophy of Building 234-5 at the Hanford site.
234-5 Project, Hydrofluorination Cycle
Short communication.
234-5 Project, Specification Letter 234-6, 235-6, Revision 1, Waste disposal
This report outlines the general requirements for disposal of wastes from the 234-5 Buildings during the 234-5 Project.
234-5 project, specification letter 234-7, 235-7, essential material storage & process solution preparation
This document presents details about the specification for space and equipment requirements for essential material storage and process solution preparation for the 234-5 project.
234-5 Project, Specification Letter 234-9, 235-9, Analytical Control Laboratory
This document presents the details of the design of the analytical control laboratory for the 234-5 project at the Hanford site.
234-5 Project, specification letter 234-10, 235-10, ventilation
This report presents details about the principles used for the arrangement of the Hanford 234-5 building in regards to the ventilation.
234-5 Project specification letter 234-41, 235-41 (Supplement D), Chemical Development Laboratory
This letter itemizes the miscellaneous equipment and supplies not previously specified which should be ordered to equip the 234-5 Chemical Development Laboratory. Equipment currently carried in store stock is not included in this list. The vendor is given only to identify the item or as a suggested source of supply.
234-5 project specification letter 235-41 Chemical Development Laboratory
This document presents details of the specifications for the chemical development laboratory, in accordance with project 234-5.
234-5 Project ventilation specifications
This brief memo from the 300 area of the Hanford plant, July 13, 1948, describes the need to redesign the ventilation system so as to minimize hazards associated with performing maintenance work.
234-5 Remote mechanical line design bases and schedules
Short communication.
300-400 V Regulated Supply
1 technical drawing of a regulated supply of 300-400 volts for nuclear reactors.
300 Mc Transmitter Pulser
Technical drawing of pulse generators for use in nuclear reactors.
The 1350 F stress-rupture properties of two wrought alloys and three cast alloys
From Summary: "These properties compare favorably with those of the strongest similar alloys previously investigated. However, compared with a 60Cr-25Fe-15Mo alloy, the three cobalt-chronium-nickel cast alloys are inferior. A correlation of NACA and OSRD (Project NRC-8) data is presented, showing the variation of rupture strengths with temperature in the range of 1350^o to 2000^o for alloys."
1500 Uses Delay Unit
Technical drawing of signal generators in nuclear reactors.
1778, 1943 : Americans will always fight for liberty.
U.S. soldiers in helmets and coats march forward on snow, looking back in review at colonial militiamen with rifles, some in torn clothing or bloody bandages. A badge of the U.S. flag is displayed prominently on the shoulder of the soldier nearest the viewer.
1946 resolution : that every American buy and hold U.S. savings bonds.
Color image of a scroll document nestled among a background of bond bills. The scroll document appears yellowed and torn with age.
7th War Loan : now--all together.
Small color poster promoting the 7th War Loan. The painting by C. C. Beall is based on a Pulitzer Prize-winning photograph taken by Associated Press photographer, Joe Rosenthal, of the second American flag raising by U.S. Marines on Mount Suribachi, Iwo Jima on February 23, 1945.
84th Inf. Div. Special Service presents the Railsplitters Revue "On the Beam" : all soldier stage show featuring "The Ballet Moose". . ..
A flyer for a musical revue given by and/or for soldiers at the T.S.C.W. (Texas State College for Women, Denton, Texas?) in 1943. There are no images, only text in various blue and red tones.
ABRASIVE BLASTING FOR CLEANING PARTS. (Experiment Performed August 18 through August 25, 1945
No Description Available.
Abstracts of Research and Development Reports
No Description Available.
Abstracts pertaining to seaplanes
Report discussing about 400 references pertaining to the hydrodynamic design of seaplanes have been compiled, and the information is presented in the form of abstracts classified under six main headings.
Acceleration Characteristics of R-3350 Engine Equipped with NACA Injection Impeller
Qualitative investigations have shown that use of the NACA injection impeller with the R-3350 engine increases the inertia of the fuel-injection system and, when the standard fuel-metering system is used, this increase in inertia results in poor engine acceleration characteristics. This investigation was therefore undertaken to determine whether satisfactory acceleration characteristics of the engine equipped with the injection impeller could be obtained by simple modifications to the fuel-monitoring system. The engine was operated with two types of carburetor; namely, a hydraulic-metering carburetor incorporating a vacuum-operated accelerating pump and a direct-metering carburetor having a throttle-actuated accelerating pump. The vacuum-operated accelerating pump of the hydraulic-metering carburetor was modified to produce satisfactory accelerations by supplementing the standard air chamber with an additional 75-cubic spring. The throttle-actuated accelerating pump of the direct-metering carburetor was modified to produce satisfactory accelerations by replacing the standard 0.028-inch-diameter bleed in the load-compensator balance line with a smaller bleed of 0.0225-inch diameter. The results of this investigation indicated that both carburetors can be easily modified to produce satisfactory acceleration characteristics of the engine and no definite choice between the types of carburetor and accelerating pump can be made. Use of the direct-metering carburetor, however, probably resulted in better fuel distribution to the cylinders during the acceleration period and reduced the backfire hazard because all the fuel is introduced through the injection impeller.
Acceleration Measurements During Landing in Rough Water of a 1/7-Scale Dynamic Model of Grumman XJR2F-1 Amphibian - Langley Tank Model 212, TED No. NACA 2378
Tests of a 1/7 size model of the Grumman XJR2F-1 amphibian were made in Langley tank no.1 to examine the landing behavior in rough water and to measure the normal and angular accelerations experienced by the model during these landings. All landings were made normal to the direction of wave advance, a condition assumed to produce the greatest accelerations. Wave heights of 4.4 and 8.0 inches (2.5 and 4.7 ft, full size) were used in the tests and the wave lengths were varied between 10 and 50 feet (70 and 350 ft, full size). Maximum normal accelerations of about 6.5g were obtained in 4.4 inch waves and 8.5g were obtained in 8.0 inch waves. A maximum angular acceleration corresponding to 16 radians per second per second, full size, was obtained in the higher waves. The data indicate that the airplane will experience its greatest accelerations when landing in waves of about 20 feet (140 ft, full size) in length.
Acceleration Measurements During Landings of a 1/5.5-Size Dynamic Model of the Columbia XJL-1 Amphibian in Smooth Water and in Waves: Langley Tank Model 208M, TED No. NACA 2336
A 1/5.5-size powered dynamic model of the Columbia XJL-1 amphibian was landed in Langley tank no. 1 in smooth water and in oncoming waves of heights from 2.1 feet to 6.4 feet (full-size) and lengths from 50 feet to 264 feet (full-size). The motions and the vertical accelerations of the model were continuously recorded. The greatest vertical acceleration measured during the smooth-water landings was 3.1g. During landings in rough water the greatest vertical acceleration measured was 15.4g, for a landing in 6.4-foot by 165-foot waves. The impact accelerations increased with increase in wave height and, in general, decreased with increase in wave length. During the landings in waves the model bounced into the air at stalled attitudes at speeds below flying speed. The model trimmed up to the mechanical trim stop (20 deg) during landings in waves of heights greater than 2.0 feet. Solid water came over the bow and damaged the propeller during one landing in 6.4-foot waves. The vertical acceleration coefficients at first impact from the tank tests of a 1/5.5-size model were in fair agreement with data obtained at the Langley impact basin during tests of a 1/2-size model of the hull.
Accelerations and bottom pressures measured on a B-24D airplane in a ditching test
From Introduction: "This report presents only that portion of the data from the first ditching which was to be used roughly establish the accelerations experienced by the pilot and the amount of water pressure to which the fuselage structure was subjected during the ditching."
Accelerations measured at center of gravity and along span of the wing of a B-24D airplane in landing impacts
No Description Available.
Accident Experience: Iron-Ore Mines, Lake Superior District, 1940-43
Report issued by the U.S. Bureau of Mines discussing the iron-ore mining accident experience in the Lake Superior District. Frequency and severity rates of accidents between 1940 and 1943 are presented. This report includes tables.
Accuracy of airspeed measurements and flight calibration procedures
From Summary: "The sources of error that may enter into the measurement of airspeed by pitot-static methods are reviewed in detail together with methods of flight calibration of airspeed installations. Special attention is given to the problem of accurate measurements of airspeed under conditions of high speed and maneuverability required of military airplanes." (author).
Activation Analysis of the Rare Earths
No Description Available.
The Activity of the Coolant in Closed-Cycle Systems
No Description Available.
Acute Exposure to Polonium. (Medical Study of Three Human Cases)
Three individuals were inadvertently exposed to polonium. Activity determinations on the routine weekly urine samples submitted by the individuals revealed counts of 174, 734, and 2190 c/min/50 ml respectively. An investigation was immediately launched to determine the source of the exposure, since there was no report of a spill or accident involving active material. By the process of elimination, the time of exposure was narrowed down to a time when two of the individuals were engaged in the denitration of a polonium solution in a small kettie inside a hood when a leak developed in the kettle. The active solution was transferred from the kettle to a carboy. All three individuals were present during the transfer period. Two wore respirators, rubber gloves, and smocks over their coveralls while the third stood well behind and watched the procedure. However, it was concluded that an inhalation exposure resulted. A medical study of each case was instituted and data are summarized. No immediate toxic effects were observed. (C.H.)
Adaptor for measuring principal strains with Tuckerman strain gage
Report discussing an adapter which uses three Tuckerman optical strain gages to measure the displacement of the three vortices of an equilateral triangle along lines 120 degrees apart. These displacements are substituted in well-known equations in order to compute the magnitude and direction of the principal strains. Tests of the adaptor indicate that principal strains over a gage length of 1.42 inch may be measured with a systematic error not exceeding 4 percent and a mean observational error of the order of + or minus 0.000006. The maximum observed error in strain was of the order of 0.00006. The directions of principal strains for unidirectional stress were measured with the adaptor with an average error of the order of 1 degree.
Addition of heat to a compressible fluid in motion
From Introduction: "The purpose of this report is to summarize, without extended proofs, the results of a study of a simplified model of nonadiabiatic, compressible fluid flow, both subsonic and supersonic, and to state these results in a form that will make them immediately useful in providing a theoretical background for current technical problems of high-speed combustion.
Additional abstracts pertaining to seaplanes
From Summary: "About 500 additional references pertaining to hydrodynamic design of seaplanes have been compiled, and the information is presented in the form of abstracts classified under six main headings:GENERAL INFORMATION, HYDROSTATICS, HYDRODYNAMICS, AERODYNAMICS, OPERATION, and RESEARCH. The compilation is an extension of NACA RM No. L6I13, entitled "Abstracts Pertaining to Seaplanes," by Jerold M. Bidwell and Douglas A. King. An author index and a subject index are included."
Additional design charts relating to the stalling of tapered wings
From Introduction: "The present report, therefore, may be considered a supplement to reference 1. The combined scope of the stall charts of reference 1, designated A, and of the present work, designated B, is summarized in the following table: For the wing with root thickness ratio to 18 was also investigated.
Additional design tasks for 234-5 Project
Short communication.