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Typical Methods and Devices for Handling Oil-Contaminated Water from Ships and Industrial Plants

Description: Technical paper issued by the Bureau of Mines over oil-contaminated water. As stated in the introduction, this paper discusses "the development of suitable apparatus for handling and disposing of oil wastes in order to prevent the pollution of navigable waters" (p. 1). This report includes tables, illustrations, and photographs.
Date: 1926
Creator: Lane, F. W.; Bauer, A. D.; Fisher, H. F. & Harding, P. N.
Partner: UNT Libraries Government Documents Department
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A Carbon Monoxide Recorder and Alarm

Description: Technical paper issued by the Bureau of Mines over the development of carbon monoxide alarms and recorders. Descriptions of the recording equipment are presented and discussed. This paper includes tables, photographs, and illustrations.
Date: 1926
Creator: Katz, Sidney H.; Reynolds, D. A.; Frevert, H. W. & Bloomfield, J. J.
Partner: UNT Libraries Government Documents Department
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Utilization of Manganiferous Iron Ores

Description: Technical paper issued by the Bureau of Mines over the use of manganese with iron ore. Different uses of the ore are presented and discussed. This paper includes tables, photographs, and illustrations.
Date: 1926
Creator: Joseph, T. L.; Royster, P. H. & Kinney, Selwyne P.
Partner: UNT Libraries Government Documents Department
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Low-Temperature Carbonization of Coal

Description: Technical paper issued by the Bureau of Mines over studies on low-temperature carbonization of coal. Methods and equipment used during the studies are discussed. This paper includes tables, illustrations, and photographs.
Date: 1926
Creator: Fieldner, Arno Carl
Partner: UNT Libraries Government Documents Department
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Dust Respirators: Their Construction and Filtering Efficiency

Description: Technical paper issued by the Bureau of Mines over studies on dust respirators. The development and efficiency of the respirators are discussed. This paper includes tables, illustrations, and photographs.
Date: 1926
Creator: Katz, Sidney H.; Smith, G. W. & Meiter, E. G.
Partner: UNT Libraries Government Documents Department
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Experiments With an Airfoil From Which the Boundary Layer Is Removed by Suction

Description: "Our attempts to improve the properties of airfoils by removing the boundary layer by suction, go back to 1922. The object of the suction is chiefly to prevent the detachment of the boundary layer from the surface of the airfoil. At large angles of attack, such detachment prevents the attainment of the great lift promised by the theory, besides greatly increasing the drag, especially of thick airfoils. This report gives results of those experiments" (p. 1).
Date: August 1926
Creator: Ackeret, J.; Betz, A. & Schrenk, O.
Partner: UNT Libraries Government Documents Department
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Tail Planes

Description: This report presents methods by which the cells of large commercial airplanes may be reduced. The tail of large airplanes represent an area where considerable improvement in weight and size reduction can be attained.
Date: August 1926
Creator: Constantin, L.
Partner: UNT Libraries Government Documents Department
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Mixing and Ignition in Supercharged Engines

Description: Memorandum presenting two principal methods of mixing for carburetor engines, one using a suction carburetor and the other using a pressure carburetor. An investigation of the spark plugs in the engines and how to design them so they can resist high levels of heat is also provided.
Date: April 1926
Partner: UNT Libraries Government Documents Department
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Behm Acoustic Sounder for Aircraft

Description: The Behm acoustic sounder for aircraft enables the barometric determination for the altitude by night or fog and therefore promises to prove of great importance in safeguarding air traffic.
Date: January 1926
Partner: UNT Libraries Government Documents Department
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Protection of wooden airplane parts against moisture by means of varnish

Description: The objects of the experiments herein described were to test the protection afforded by Valspar oil varnish against the absorption of moisture by wooden airplane parts and the consequent changes in their elastic properties and to compare some of the best Dutch varnishes with Valspar.
Date: February 1926
Creator: Wolff, E. B. & Van Ewijk, L. J. G.
Partner: UNT Libraries Government Documents Department
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Change of 180 Degrees in the Direction of a Uniform Current of Air

Description: In the construction of aerodynamic tunnels, it is a very important matter to obtain a uniform current of air in the sections where measurements are to be made. The straight type ordinarily used for attaining a uniform current and generally recommended for use, has great defects. If we desire to avoid these defects, it is well to give the canals of the tunnel such a form that the current, after the change of direction of its asymptotes, approximates a uniform and rectilinear movement. But for th… more
Date: February 1926
Creator: Witoszynski, C.
Partner: UNT Libraries Government Documents Department
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Kirsten-Boeing Propeller

Description: The advantages of the Kirsten-Boeing propeller consist essentially in the adjustability of the thrust in any desired direction, in the plane perpendicular to the axis of rotation of the system, and in its high efficiency. The propeller, which greatly resembles the paddle wheels used on river steamers, differs fundamentally from the latter, in that all the blades work simultaneously in the fluid medium (air or water).
Date: February 1926
Creator: Sachse, H.
Partner: UNT Libraries Government Documents Department
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Approximate Calculation of the Static Longitudinal Stability of Airplanes

Description: It seems desirable to have some simple method for calculating quickly and with sufficient accuracy: 1) the correct position of the center of gravity; 2) the requisite tail-group dimensions; 3) and the course of the wing and tail-group moments. In out deductions, we will first replace the biplane (disregarding the effect of stagger, decalage and induced drag) by an equivalent monoplane, whose dimensions and position in space can be approximately determined in a simple manner.
Date: November 1926
Creator: Bienen, Theodor
Partner: UNT Libraries Government Documents Department
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Experiments on Autorotation

Description: This article deals principally with Professor Bairstow's experiments on autorotation, in which the wing is free to rotate about an axis in its plane of symmetry, which axis is parallel with the direction of the wind.
Date: September 1926
Creator: Anderlik, E.
Partner: UNT Libraries Government Documents Department
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Flight Tests on Airplanes

Description: This report presents test procedures, methods, and instruments for flight testing of aircraft. Dynamic-pressure gauges are discussed at length.
Date: April 1926
Creator: Koppe, Heinrich
Partner: UNT Libraries Government Documents Department
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Experiments With a Sphere From Which the Boundary Layer Is Removed by Suction

Description: The task of removing the boundary layer by suction consists in producing, in place of the ordinary flow with the formation of vortices, another kind of flow in which the vortices are eliminated by drawing small quantities of fluid from certain points on the surface into the interior of the body. The experiments with a sphere, which constitute the subject of this report, were made early in the present year .
Date: November 1926
Creator: Schrenk, Oskar
Partner: UNT Libraries Government Documents Department
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Metal Airplane Construction

Description: It has long been thought that metal construction of airplanes would involve an increase in weight as compared with wood construction. Recent experience has shown that such is not the case. This report describes the materials used, treatment of, and characteristics of metal airplane construction.
Date: May 1926
Partner: UNT Libraries Government Documents Department
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First Experiences With the Rotating Laboratory

Description: This report describes experiences with a rotating cylinder to explore the effects of motion and flow upon human sensory organs. One observation was that the variation of the resultant line of gravity (from gravity and centrifugal force) was not felt so strongly as might be expected. The impressions produced by the physical effects on the members of the body, especially the ones caused by the deflecting force (Coriolis force), are exactly what the laws of physics would lead us to expect, althoug… more
Date: July 1926
Creator: Prandtl, L.
Partner: UNT Libraries Government Documents Department
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Recent Experiments With Large Seaplanes

Description: This report covers the following aspects of large seaplane design and construction: heavy wing loading; propeller design; how the motion of the airplane is affected by increasing the dihedral angle; power plants; floats; and the hull.
Date: March 1926
Creator: Rohrbach, Adolf
Partner: UNT Libraries Government Documents Department
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Slip Stream Effect

Description: "The horizontal tail surfaces of a new airplane usually are proportional so that the curve of moment about the center of gravity, combined with a similar curve for the wings alone, gives a composite curve which provides a certain specified degree of static stability. With the application of power three additional factors must be considered in calculations: the moment of the propeller thrust; the change in the velocity of the air over the tail due to the slipstream; and the change in direction o… more
Date: March 1926
Creator: Montieth, Charles N.
Partner: UNT Libraries Government Documents Department
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