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Some Principles Governing the Production of Oil Wells

Description: From Introduction: "The report discusses some of the fundamental factors governing oil production, taking up first the conditions affecting the amount of oil in the oil sand, then those factors that control the rate of production of oil wells, and then discusses several related problems, most of which deal particularly with the effect of the production of one well on that of another."
Date: 1921
Creator: Beal, Carl H. & Lewis, J. O.
Partner: UNT Libraries Government Documents Department
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Underground Conditions in Oil Fields

Description: From Introduction: "This paper aims to show the general method of procedure in studying underground conditions in producing oil fields and how such study may not only correct but even prevent great unnecessary losses. Throughout the paper reference is made to oil wells and oil fields, but to a certain degree many of the suggestions relating to oil wells are applicable in the care and protection of gas wells and in solving gas problems."
Date: 1921
Creator: Ambrose, A. W.
Partner: UNT Libraries Government Documents Department
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Regulation of Explosives in the United States: with Especial Reference to the Administration of the Explosives Act of October 6, 1917, by the Bureau of Mines

Description: From Origin of Federal Explosives Act, October 6, 1917: " A competent force from the Bureau of Mines was then assigned to study the laws and ordinances of countries, States, and municipalities in which lawas and ordinances regulating explosives have been enacted, and especially to ascertain how these laws had been modified by the necessities of the existing state of war, and, also, wherein the proposed law might conflict with or overlap the jurisdiction of existing laws. This incomplete enumera… more
Date: 1921
Creator: Munroe, Charles E.
Partner: UNT Libraries Government Documents Department
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Flotation Tests of Idaho Ores

Description: From Introduction: "This paper covers part of the investigations carried on by the United States Bureau of Mines in cooperation with the Idaho Bureau of Mines, the University of Idaho, and certain mining companies of the Coeur d' Alene region. Although the results of the tests included in this report are not to be considered final, they indicate possibilities and may suggest others leading to a solution of the problem of separating lead and zinc sulphides by differential flotation in the treatm… more
Date: 1921
Creator: Wright, Clarence A.; Parmelee, James G. & Norton, James T.
Partner: UNT Libraries Government Documents Department
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Investigations of Zirconium with Especial Reference to the Metal and Oxide: Historical Review and Bibliography

Description: From introduction: "As it necessary to begin with a historical review of the literature, such a review is given as Part I of this report, and a bibliography is included as Part IV. References to the numbered items in this bibliography are made throughout the text, the usual footnote reference being omitted. Analyses of the products and conclusions as their purity are given under the descriptions of methods of preparation. A table showing the properties amorphous metal, and another showing the p… more
Date: 1921
Creator: Marden, J. W. & Rich, M. N.
Partner: UNT Libraries Government Documents Department
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Laboratory Studies of the Trent Process

Description: Report issued by the U.S. Bureau of Mines detailing the laboratory-scale tests of the efficiency of the Trent process in cleaning coal, in which powdered coal, water, and oil is agitated or beaten together to remove impurities. The report includes details in tables detailing the efficiency varying the type and amounts of coal, oil, and water on the process.
Date: July 1921
Creator: Perrott, G. St. John & Kinney, Selwyne Perez
Partner: UNT Libraries Government Documents Department
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U.S. Bureau of Standards Annual Report: 1921

Description: Report describing the functions and operations of the United States Bureau of Commerce and its divisions during the fiscal year.
Date: July 1921
Creator: United States. Bureau of Standards.
Partner: UNT Libraries Government Documents Department
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The Recovery of Unburned Fuel from Boiler Furnace Refuse

Description: Report on recovering unburned fuel from boiler furnace refuse, based on processes used in Europe and tests in the United States.
Date: September 1921
Creator: Fraser, Thomas & Yancey, H. F.
Partner: UNT Libraries Government Documents Department
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Fire Tests of Building Columns

Description: Technical paper issued by the Bureau of Mines over studies conducted on fire resistance on building columns. As stated in the introduction, "the purpose of this investigation is to ascertain (1) the ultimate resistance against fire, of protected and unprotected columns as used in the interior of buildings; (2) their resistance against impact and sudden cooling from hose streams when in a highly heated condition" (p. 12). This paper includes tables, illustrations.
Date: April 21, 1921
Creator: Ingberg, S. H.; Griffin, H. K.; Robinson, W. C. & Wilson, R. E.
Partner: UNT Libraries Government Documents Department
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Treatment of the Tungsten Ores of Boulder County, Colo.

Description: Report discussing the the development of milling practice in Boulder County, the ore-dressing methods in use, and the local manufacture of ferrotungsten and tungstic oxide. Figures giving the production of tungsten concentrates in the Boulder district, in the United States, and in the world; data on the buying of tungsten ores; costs of production; and the normal tungsten requirements in this country are presented.
Date: October 1921
Creator: Bonardi, J. P. & Williams, J. C.
Partner: UNT Libraries Government Documents Department
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Quarry Accidents in the United States During the Calendar Year 1919

Description: Technical paper issued by the Bureau of Mines over quarry accidents reported during the year of 1919. The results of the accident reports collected are presented and discussed. This paper includes tables.
Date: 1921
Creator: Adams, William W.
Partner: UNT Libraries Government Documents Department
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Gas Masks for Gases Met in Fighting Fires

Description: Technical paper issued by the Bureau of Mines over the development of gas masks designed for fighting fires. The characteristics of the different types of masks in development are presented. This paper includes tables, illustrations, and photographs.
Date: August 1921
Creator: Fieldner, Arno Carl; Katz, Sidney H. & Kinney, Selwyne P.
Partner: UNT Libraries Government Documents Department
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Calculation of Wing Spars

Description: The author presents a comparison and combination of the numerical and geometrical determinations of the maximum M, when calculating the maximum bay moment.
Date: August 1921
Creator: Müller-Breslau, H.
Partner: UNT Libraries Government Documents Department
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On the Resistance of Spheres and Ellipsoids in Wind Tunnels

Description: Note presenting a study of the influence exercised on the results of measurements by the dimensions and type of the tunnels used in aerodynamic laboratories, and on the comparison of the results with observations made in motionless and unlimited air.
Date: January 1921
Creator: Riabouchinsky, D. P.
Partner: UNT Libraries Government Documents Department
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The pressure distribution over the horizontal tail surfaces of an airplane 2

Description: From Summary: "This investigation was undertaken to determine whether the results obtained upon model tail surfaces can be used to accurately predict loads upon the full-sized tail; and also to find the distribution of load when large elevator angles are used, as the loads from such angles can not be obtained readily in free flight. The method consisted in using a metal horizontal tail surface inside of which small air passages, connecting with a series of holes in the surface, led the pressure… more
Date: 1921
Creator: Norton, F. H. & Bacon, D. L.
Partner: UNT Libraries Government Documents Department
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Preliminary experiments to determine scale and slip-stream effects on a 1/24th size model of a JN4H biplane

Description: This work was undertaken to obtain results on a small model of a complete airplane which might be used for comparison with corresponding tests made in full flight. Somewhat similar tests have been previously made at various other laboratories; but as certain discrepancies exist between corresponding tests in different tunnels, it has been deemed advisable to obtain a direct comparison for this particular installation. The present work covers tests on a one-twenty-fourth scale model at speeds va… more
Date: 1921
Creator: Bacon, D. L.
Partner: UNT Libraries Government Documents Department
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Diagrams of Airplane Stability

Description: In this report a study is made of the effect on longitudinal and lateral oscillations of an airplane of simultaneous variations in two resistance derivatives while the remainder of the derivatives are constant. The results are represented by diagrams in which the two variable resistance derivatives are used as coordinates, and curves are plotted along which the modulus of decay of a long oscillation has a constant value. The same type of analysis is also carried out for the stability of the par… more
Date: 1921
Creator: Bateman, H.
Partner: UNT Libraries Government Documents Department
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Statical Longitudinal Stability of Airplanes

Description: This report, which is a continuation of the "Preliminary report on free flight testing" (report no. NACA-TR-70), presents a detailed theoretical analysis of statical stability with free and locked controls and also the results of many free flight test on several types of airplanes. In developing the theory of stability with locked controls an expression for pitching moment is derived in simple terms by considering the total moment as the sum of the moments due to wings and tail surface. This ex… more
Date: 1921
Creator: Warner, Edward P.
Partner: UNT Libraries Government Documents Department
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General Theory of the Steady Motion of an Airplane

Description: The writer points out briefly the history of the method proposed for the study of steady motion of an airplane, which is different from other methods now used. M. Paul Painleve has shown how convenient the drag-lift curve was for the study of airplane steady motion. The author later added to the drift-lift curve the curve called the "speed curve" which permits a direct checking of the speed of the airplane under all flying conditions. But the speed curve was plotted in the same quadrant as the … more
Date: 1921
Creator: de Bothezat, George
Partner: UNT Libraries Government Documents Department
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Design of Wind Tunnels and Wind Tunnel Propellers 2

Description: This report is a continuation of National Advisory Committee for Aeronautics report no. 73. The variations in velocity and direction of the wind stream were studied by means of a recording air speed meter and a recording yawmeter. The work was carried on both in a 1-foot diameter model tunnel and in a 5-foot full-size tunnel, and wherever possible comparison was made between them. It was found that placing radial vanes directly before the propeller in the exit cone increased the efficiency of t… more
Date: 1921
Creator: Norton, F. H. & Warner, Edward P.
Partner: UNT Libraries Government Documents Department
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Accelerations in flight

Description: This report deals with the accelerations obtained in flight on various airplanes at Langley Field for the purpose of obtaining the magnitude of the load factors in flight and to procure information on the behavior of an airplane in various maneuvers. The instrument used in these tests was a recording accelerometer of a new type designed by the technical staff of the National Advisory Committee for Aeronautics. The instrument consists of a flat steel spring supported rigidly at one end so that t… more
Date: 1921
Creator: Norton, F. H. & Allen, E. T.
Partner: UNT Libraries Government Documents Department
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Accelerometer design

Description: In connection with the development of an accelerometer for measuring the loads on airplanes in free flight a study of the theory of such instruments has been made, and the results of this study are summarized in this report. A portion of the analysis deals particularly with the sources of error and with the limitations placed on the location of the instrument in the airplane. The discussion of the dynamics of the accelerometer includes a study of its theoretical motions and of the way in which … more
Date: 1921%
Creator: Norton, F. H. & Warner, Edward P.
Partner: UNT Libraries Government Documents Department
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The Calculated Performance of Airplanes Equipped With Supercharging Engines

Description: In part one of this report are presented the theoretical performance curves of an airplane engine equipped with a supercharging compressor. In predicting the gross power of a supercharging engine, the writer uses temperature and pressure correction factors based on experiments made at the Bureau of Standards (NACA report nos. 45 and 46).. Part two of this report presents an estimation of the performance curves of an airplane fitted with a supercharging engine.
Date: 1921
Creator: Kemble, E. C.
Partner: UNT Libraries Government Documents Department
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Performance of a Liberty 12 airplane engine

Description: In cooperation with the Engineering Division of the Air Service of the United States Army, a Liberty-12 engine has been tested at the Bureau of Standards. The program of tests was planned to yield that information considered most important in determining the value of the engine for aviation. Full power runs were made at the ground, at 25,000 feet, and at several intermediate altitudes. To determine the mechanical efficiency of the engine, friction horsepower was measured at the ground and at 15… more
Date: 1921
Creator: Sparrow, S. W. & White, H. S.
Partner: UNT Libraries Government Documents Department
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