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An analysis of a piston-type gas-generator engine

Description: From Introduction: "An analysis of an engine having a division of work such that the power of the reciprocating engine is just sufficient to drive the compressor is reported herein. This combination of a reciprocating-type internal-combustion engine that drives its own supercharging compressor and generates gas for further expansion through a turbine will be called a piston-type gas generator in this report."
Date: February 18, 1948
Creator: Tauschek, Max J. & Biermann, Arnold E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Apparent Effect of Inlet Temperature on Adiabatic Efficiency of Centrifugal Compressors

Description: From Introduction: "The results of varying only Reynolds number for several equivalent tip speeds are presented and probable reasons for the apparent variation of adiabatic efficiency with inlet temperature are discussed."
Date: February 1948
Creator: Anderson, Robert J.; Ritter, William K. & Parsons, Shirley R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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An application of Falkner's surface-loading method to predictions of hinge-moment parameters for swept-back wings

Description: Report presenting an application of the Falkner lifting-surface-theory method to predicting hinge-moment and lift parameters for sweptback plan forms in order to develop an analogue to the existing lifting-surface-theory procedure for prediction of these parameters on unswept plan forms. For two specific plan forms, the hinge-moment predictions based on the Falkner method were not in good agreement with experimental values.
Date: February 1948
Creator: Jones, Arthur L. & Sluder, Loma
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Calculation of Uncoupled Modes and Frequencies in Bending or Torsion of Nonuniform Beams

Description: Report presenting a procedure for calculating the frequencies and modes of nonuniform beams in uncoupled bending and torsional vibration. The method is quick, easy, and can be learned by anyone familiar with engineering beam theory. Nine examples are provided in order to demonstrate the effectiveness on the calculation method on a variety of beams.
Date: February 1948
Creator: Houbolt, John C. & Anderson, Roger A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Cle Elum Iron-Nickel Deposits, Kittitas County, Washington

Description: Report issued by the Bureau of Mines over studies conducted on the iron-nickel deposits of Kittitas County, Washington. As stated in the introduction, "the investigation consisted of road building, diamond drilling, sampling, and metallurgical tests" (p. 1). This report includes tables and maps.
Date: February 1948
Creator: Zoldok, S. W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Consumption of Slab Zinc in the United States by Industries, Grades, and Geographic Divisions, 1940-45: Including a Summary of Consumption Since 1900

Description: Report issued by the U.S. Bureau of Mines discussing the U.S. slab-zinc consumption between the years of 1940-1945. As stated in the introduction, "this information circular summarized basic data collected for many years by the Bureau of Mines, but in particular presents for the 1940-45 period details derived from the comprehensive slab zinc consumption survey inaugurated in 1940" (p. 3). The different uses for slab zinc are presented. This report includes maps, tables, and illustrations.
Date: February 1948
Creator: Ransome, Alfred L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Correlation of Chemical Analyses on Graphite Bars and Test Pile Results

Description: From abstract: "The chemical analyses of graphite test bars obtained from National Carbon Company and the analyses performed by the Hanford Works Laboratories Division do not correlate significantly with the test pile results, nor do the chemical analyses obtained from National Carbon Company agree with those done in the Handford Works Laboratories. Chemical results obtained at Hanford on samples taken lengthwise from individual bars correlated significantly with the individual test pile result… more
Date: February 5, 1948
Creator: Lane, J. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Cyclic Engine Test of Cast Vitallium Turbine Buckets - 1

Description: Report presenting an investigation to correlate the engine service performance of cast Vitallium turbine buckets with standard laboratory metallurgical data. Data was obtained on four turbine wheels of Timken alloy with cast Vitallium buckets. Results regarding the engine test and metallurgical examination are provided.
Date: February 19, 1948
Creator: Farmer, J. Elmo; Darmara, F. N. & Poulson, Francis D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Degradation of Isotopic Lactate and Acetate

Description: A scheme of glucose degradation has been validated by the use of intermediates of known isotopic composition. In this scheme: glucose {yields} lactic acid {yields} CO{sub 2} (C-3,4) + acetic acid {yields} CO{sub 2} (C-2,5) + acetone {yields} iodoform (C-1,6) + acetate (C-1,6; 2,5), it was found that (a) in the oxidation of lactic acid, approximately 4.7% of the acetic acid was oxidized to CO{sub 2}; and (b) under the conditions prescribed, BaCO{sub 3} from the degradation of Ba acetate containe… more
Date: February 24, 1948
Creator: Aronoff, S.; Haas, V. A. & Fries, B. A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Diameter Measurements of Slugs Before and After Prolonged Heat Treatment

Description: Abstract: "Diameter measurements of 25 slugs taken before and after a prolonged heat treatment showed no evidence of differences that would indicate blistering. The average effects of the treatment was different for the various slugs. Large differences in diameter measurements between slugs. Large differences in diameter between slugs and significant differences between indices and positions were found."
Date: February 16, 1948
Creator: Bennett, Carl A. & Lane, J. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Directive No. HEW-77

Description: As work on the Columbia Basin irrigation project on the Columbia River is in the initial stages, the question of the effect of this project of the mineral content of the Columbia River has been raised. As an increase in dissolved mineral matter would seem to be likely, it was felt that quantitative estimate of the magnitude of this increase would be important, specifically with reference to the retaining of the demineralization plant at 100-D Area. Accordingly, a study has been made of the prob… more
Date: February 6, 1948
Creator: Lail, G. G. & Lauder, D. H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Ditching Tests of a 1/20-Scale Model of the Northrop B-35 Airplane

Description: "Tests of a 1/20-scale dynamically similar model of the Northrop B-35 airplane were made to study its ditching characteristics. The model was ditched in calm water at the Langley tank no. 2 monorail. Various landing attitudes, speeds,and conditions of damage were simulated during the investigation. The ditching characteristics were determined by visual observation and from motion-picture records and time-history acceleration records" (p. 1).
Date: February 20, 1948
Creator: Fisher, Lloyd J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Effect of Rotor-Blade Twist and Plan-Form Taper on Helicopter Hovering Performance

Description: Note presenting a theoretical analysis of the hovering performance of rotors with various combinations of twist and plan-form taper in order to estimate the effects of blade twist and taper on rotor efficiency in hovering. The calculations were made with the aid of a strip-analysis procedure similar to that used in propeller analysis, the comparisons being made for rotors of equal solidity.
Date: February 1948
Creator: Gessow, Alfred
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The effect of tip modification and thermal de-icing air flow on propeller performance as determined from wind-tunnel tests

Description: Report presenting results of the effects on propeller efficiency of thermal de-icing of airplane propellers by use of internal flow through hollow blades. Wind tunnel tests were made of a propeller with blades embodying tip orifices.
Date: February 1948
Creator: Gray, W. H. & Davidson, R. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Effect of Turbine Axial Nozzle-Wheel Clearance on Performance of Mark 25 Torpedo Power Plant

Description: "Investigations were made of the turbine from a Mark 25 torpedo to determine the performance of the unit with three different turbine nozzles at various axial nozzle-wheel clearances. Turbine efficiency with a reamed nondivergent nozzle that uses the axial clearance space for gas expansion was little affected by increasing the axial running clearance from 0.030 to 0.150 inch. Turbine efficiency with cast nozzles that expanded the gas inside the nozzle passage was found to be sensitive to increa… more
Date: February 4, 1948
Creator: Hoyt, Jack W. & Kottas, Harry
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The Effect of Wind Bending Deflection on the Rolling Moment Due to Sideslip

Description: Note presenting a method for calculating the effect of wing flexibility on the rolling moment due to sideslip for wings of various aspect ratios and taper ratios when different shapes of the bending-deflection curve are assumed. The shape of the deflection curve is shown to be unimportant, the main factor being the amount of wing-tip deflection.
Date: February 1948
Creator: Lovell, Powell M., Jr.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The Estimation of Heats of Formation

Description: The procedure for estimation of heats of formation of compounds is illustrated by discussion of compounds of several of the elements of the actinide series. The procedure is particularly suited for lanthanide and actinide elements because of the similarity of the ionic radii and types of bonding.
Date: February 2, 1948
Creator: Brewer, Leo
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Evaluation of Gust and Draft Velocities from Flights of F-61C Airplanes within Thunderstorms August 7, 1947 to August 13, 1947 at Clinton County Army Air Field, Ohio

Description: The gust and draft velocities from records of NACA instruments installed in P-61C airplanes participating in thunderstorm flights at Clinton County Army Air FIeld, Ohio, from August 7, 1947 to August 13, 1947 are presented.
Date: February 13, 1948
Creator: Funk, Jack
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Evaluation of Gust and Draft Velocities from Flights of P-61C Airplanes within Thunderstorms August 13, 1947 to August 15, 1947 at Clinton County Army Air Field, Ohio

Description: The gust and draft velocities from records of NACA instruments installed in P-61C airplanes participating in thunderstorm flights at Clinton County Army Air Field, Ohio, from August 13, 1947 to August 15, 1947 are presented.
Date: February 2, 1948
Creator: Funk, Jack
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Evaluation of Gust and Draft Velocities From Flights of P-61C Airplanes Within Thunderstorms July 31, 1947 to August 6, 1947 at Clinton County Army Air Field, Ohio

Description: Memorandum presenting the results of measurements of gust and draft velocities within thunderstorms at an air field over a 7-day period. The data are summarized in tables and compared to previous flights.
Date: February 13, 1948
Creator: Funk, Jack
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Explosions of Ammonium Nitrate Fertilizer on Board the S. S. Grandcamp and S. S. High Flyer at Texas City, Texas, April 16, 17, 1947

Description: Report issued by the Bureau of Mines regarding explosions that took place on two separate cargo ships in 1947. The observations, data collected, and testing done during investigations of the disaster are presented. This report includes photographs, and illustrations.
Date: February 1948
Creator: Kintz, G. M.; Jones, G. W. & Carpenter, Charles B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Fatigue strength and related characteristics of aircraft joints 2: fatigue characteristics of sheet and riveted joints of 0.040-inch 24S-T, 75S-T, and R303-T275 aluminum alloys

Description: Report presenting the results of a series of fatigue testing of aluminum-alloy sheet materials and simple riveted joints. The materials tested were 24S-T Alclad, 24S-T bare, 75S-T Alclad, R303-T275 clad, and R303-T275 bare.
Date: February 1948
Creator: Russell, H. W.; Jackson, L. R.; Grover, H. J. & Beaver, W. W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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