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  Partner: UNT Libraries Government Documents Department
 Resource Type: Report
 Decade: 1940-1949
N-17, A Delayed Neutron Emitter

N-17, A Delayed Neutron Emitter

Date: November 5, 1948
Creator: Alvarez, L. W.
Description: 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}.
Contributing Partner: UNT Libraries Government Documents Department
100 Area monthly reports for 1947

100 Area monthly reports for 1947

Date: January 1947
Creator: unknown
Description: 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.
Contributing Partner: UNT Libraries Government Documents Department
100-Ton Test at Trinity: Report on Earth Velocity Measurements

100-Ton Test at Trinity: Report on Earth Velocity Measurements

Date: June 13, 1945
Creator: Coon, J. H.
Description: Apparatus, field layout, miscellaneous testing, and the method of analysis of a 100-ton test at Trinity.
Contributing Partner: UNT Libraries Government Documents Department
200 areas contaminated particle discharge

200 areas contaminated particle discharge

Date: December 15, 1948
Creator: unknown
Description: Short communication.
Contributing Partner: UNT Libraries Government Documents Department
234-5 Building design philosophy

234-5 Building design philosophy

Date: November 26, 1947
Creator: Work, J. B.
Description: This report presents the building and design philosophy of Building 234-5 at the Hanford site.
Contributing Partner: UNT Libraries Government Documents Department
234-5 Project, Hydrofluorination Cycle

234-5 Project, Hydrofluorination Cycle

Date: December 18, 1947
Creator: Prudich, T.
Description: Short communication.
Contributing Partner: UNT Libraries Government Documents Department
234-5 Project, Specification Letter 234-6, 235-6, Revision 1, Waste disposal

234-5 Project, Specification Letter 234-6, 235-6, Revision 1, Waste disposal

Date: December 9, 1947
Creator: Work, J. B.
Description: This report outlines the general requirements for disposal of wastes from the 234-5 Buildings during the 234-5 Project.
Contributing Partner: UNT Libraries Government Documents Department
234-5 project, specification letter 234-7, 235-7, essential material storage & process solution preparation

234-5 project, specification letter 234-7, 235-7, essential material storage & process solution preparation

Date: December 9, 1947
Creator: Work, J.B.
Description: 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.
Contributing Partner: UNT Libraries Government Documents Department
234-5 Project, Specification Letter 234-9, 235-9, Analytical Control Laboratory

234-5 Project, Specification Letter 234-9, 235-9, Analytical Control Laboratory

Date: December 15, 1947
Creator: Curtis, R.E.
Description: This document presents the details of the design of the analytical control laboratory for the 234-5 project at the Hanford site.
Contributing Partner: UNT Libraries Government Documents Department
234-5 Project, specification letter 234-10, 235-10, ventilation

234-5 Project, specification letter 234-10, 235-10, ventilation

Date: December 17, 1947
Creator: Work, J.B.
Description: This report presents details about the principles used for the arrangement of the Hanford 234-5 building in regards to the ventilation.
Contributing Partner: UNT Libraries Government Documents Department
234-5 Project specification letter 234-41, 235-41 (Supplement D), Chemical Development Laboratory

234-5 Project specification letter 234-41, 235-41 (Supplement D), Chemical Development Laboratory

Date: October 22, 1948
Creator: Work, J.B.
Description: 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.
Contributing Partner: UNT Libraries Government Documents Department
234-5 project specification letter 235-41 Chemical Development Laboratory

234-5 project specification letter 235-41 Chemical Development Laboratory

Date: December 23, 1947
Creator: Work, J.B.
Description: This document presents details of the specifications for the chemical development laboratory, in accordance with project 234-5.
Contributing Partner: UNT Libraries Government Documents Department
234-5 Project ventilation specifications

234-5 Project ventilation specifications

Date: July 13, 1948
Creator: Work, J.B.
Description: 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.
Contributing Partner: UNT Libraries Government Documents Department
234-5 Remote mechanical line design bases and schedules

234-5 Remote mechanical line design bases and schedules

Date: August 22, 1949
Creator: Gross, C.N.
Description: Short communication.
Contributing Partner: UNT Libraries Government Documents Department
The 1350 F stress-rupture properties of two wrought alloys and three cast alloys

The 1350 F stress-rupture properties of two wrought alloys and three cast alloys

Date: November 1947
Creator: Reynolds, E E; Freeman, J W & White, A E
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Abstracts of Research and Development Reports

Abstracts of Research and Development Reports

Date: September 1, 1947
Creator: AEC
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Abstracts pertaining to seaplanes

Abstracts pertaining to seaplanes

Date: July 24, 1947
Creator: Bidwell, Jerold M & King, Douglas A
Description: 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.
Contributing Partner: UNT Libraries Government Documents Department
Acceleration Characteristics of R-3350 Engine Equipped with NACA Injection Impeller

Acceleration Characteristics of R-3350 Engine Equipped with NACA Injection Impeller

Date: January 8, 1947
Creator: Hickel, Robert O. & Snider, William E.
Description: 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 ...
Contributing Partner: UNT Libraries Government Documents Department
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

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

Date: May 6, 1947
Creator: Land, Norman S. & Zeck, Howard
Description: 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.
Contributing Partner: UNT Libraries Government Documents Department
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

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

Date: September 25, 1947
Creator: Clement, Eugene P. & Havens, Robert F.
Description: 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.
Contributing Partner: UNT Libraries Government Documents Department
Accelerations and bottom pressures measured on a B-24D airplane in a ditching test

Accelerations and bottom pressures measured on a B-24D airplane in a ditching test

Date: November 1944
Creator: Steiner, Margaret F.
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Accelerations measured at center of gravity and along span of the wing of a B-24D airplane in landing impacts

Accelerations measured at center of gravity and along span of the wing of a B-24D airplane in landing impacts

Date: August 1944
Creator: Westfall, John R
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Accident Experience: Iron-Ore Mines, Lake Superior District, 1940-43

Accident Experience: Iron-Ore Mines, Lake Superior District, 1940-43

Date: May 1945
Creator: Cash, Frank E. & Larsen, Reuben D.
Description: 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.
Contributing Partner: UNT Libraries Government Documents Department
Accuracy of airspeed measurements and flight calibration procedures

Accuracy of airspeed measurements and flight calibration procedures

Date: 1948
Creator: Huston, Wilber B
Description: 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).
Contributing Partner: UNT Libraries Government Documents Department
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