Technical Report Archive & Image Library (TRAIL) - 195 Matching Results

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Investigation of Toxic Gases from Mexican and other High-Sulphur Petroleums and Products: Report by the Bureau of Mines, Department of the Interior, to the American Petroleum Institute

Description: From Scope of the Work and Findings: "The work was divided into two parts, namely, field work and laboratory investigations. The most interesting and important of the laboratory investigations. The most interesting and important of the laboratory findings were: (1) The presence of hydrogen sulphide (H2S) in the gases and vapors from light Mexican crude; (2) the extreme toxicity of H2S; (3) the absence of arsine, stibine, phosgene, hydrocyanic acid, and other toxic substances; (4) treatment reco… more
Date: 1923
Creator: Sayres, R. R.; Smith, N. A. C.; Fieldner, A. C.; Mitchell, C. W.; Jones, G. W.; Yant, W. P. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Leaching Nonsulphide Copper Ores with Sulphur Dioxide

Description: Report issued by the Bureau of Mines discussing the sulfurous acid leaching of the Southwest experiment station. Operations and analyses of the experiment station are presented. This report includes tables, illustrations, and photographs.
Date: May 1923
Creator: Van Barneveld, Charles E. & Leaver, Edmund S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Lecture on Aerodynamics

Description: This lecture deals with four main subjects: methods of studying air resistance, experimental aerodynamics, propellers and stability of airplanes.
Date: September 1923
Creator: Toussaint, A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Lift and Drag Effects of Wing-Tip Rake

Description: This report deals with a description and report of tests carried out at the Washington Navy Yard on models of the RAF-6, albatross and Slone airfoils to determine the effectiveness of the conventional wing-trailing edge being always longer than the leading edge. The results are compared with the values computed by standard formulae in use at the time the tests were conducted.
Date: 1923
Creator: Zahm, A. F.; Bear, R. M. & Hill, G. C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Longitudinal Balancing of Airplanes

Description: The object of the present communication is to determine the best method for locating the center of lift of an airplane and to provide a method for making corrections. The method employed is very simple, being based on the positions given the elevator during flights at different speeds.
Date: February 1923
Creator: Eteve, Albert
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Manual for Oil and Gas Operations [Part 1]

Description: Part one of a bulletin from the U.S. Bureau of Mines discussing oil and gas field waste prevention, and policies on field operation. According to the introduction, "Part I of this manual points out types of oil and gas wastes and suggest, in detail or by reference, the most practical and effective methods in current practice for stopping these wastes. Throughout Part I the department's operating policy is given, with interpretations of the 'Operating Regulations' for enforcing every practical… more
Date: 1923
Creator: Swigart, T. E. & Beecher, C. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Manual for Oil and Gas Operations [Part 2]

Description: Part two of a bulletin from the U.S. Bureau of Mines discussing oil and gas field waste prevention, and policies on field operation. According to the introduction (from part 1), "Part II comprises the revised 'Operating Regulations' which supersede all previous regulations and will govern future operations on public lands" (p. 1).
Date: 1923
Creator: Swigart, T. E. & Beecher, C. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Marcel Besson Wing Sections

Description: Three different Marcel Besson airfoils are investigated in terms of maximum lift, maximum fineness, minimum required power, and wing section drag. Comparisons are then made between the three airfoils.
Date: January 1923
Creator: Delanghe, C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Mathematical Equations for Heat Conduction in the Fins of Air-Cooled Engines

Description: The problem considered in this report is that of reducing actual geometrical area of fin-cooling surface, which is, of course, not uniform in temperature, to equivalent cooling area at one definite temperature, namely, that prevailing on the cylinder wall at the point of attachment of the fin. This makes it possible to treat all the cooling surface as if it were part of the cylinder wall and 100 per cent effective. The quantities involved in the equations are the geometrical dimensions of the f… more
Date: 1923
Creator: Harper, D. R. & Brown, W. B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Minimum Induced Drag of Aerofoils

Description: This report helps explain the phenomenon of flight. It contains some theorems concerning the arrangement of airplane wings which are of considerable practical interest. In particular, it shows the theoretical reasons for the decrease of drag which accompanies all increase in the aspect ratio or lateral extension of a wing. The efficiency of a given arrangement of wings may be calculated from the formulae derived in this paper.
Date: 1923
Creator: Munk, Max M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Model Supports and Their Effects on the Results of Wind Tunnel Tests

Description: "The airflow about a model while being tested is often sufficiently affected by the model support to lead to erroneous conclusions unless appropriate corrections are used. In this paper some new material on the subject is presented, together with a review of the airfoil support corrections used in several other laboratories" (p. 1).
Date: February 1923
Creator: Bacon, David L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Monoplanes or Biplanes?

Description: This article presents a discussion of the relative merits between monoplanes and biplanes. A comparison of the aerodynamic qualities and advantages of both types are provided.
Date: November 1923
Creator: Warner, Edward P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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My Experience With Helicopters

Description: The author recounts his experiments with helicopters. The object of his investigations was to remain stationary in the air for five minutes and to make a closed flight at low altitude. Some of the topics discussed include stabilization, horizontal flight, and directional control.
Date: April 1923
Creator: Oemichen, Etienne
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The N.A.C.A. Recording Tachometer and Angle of Attack Recorder

Description: This note contains photos and descriptions of airplane flight apparatus for use in conjunction with a recording galvanometer. In measuring the angle of attack a variable resistance is used, being controlled by a vane in the airstream. Thus it is only necessary to measure the change of resistance.
Date: August 1923
Creator: Reid, H. J. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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New Albatross Commercial Airplane "L 58"

Description: The "L 58" is a monoplane with cantilever wings joined directly to the fuselage. It accordingly belongs to the new school of airplane construction, as founded and developed in Germany. A list of performance characteristics is included.
Date: March 1923
Creator: Meyer, G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The New Interpretation of the Laws of Air Resistance

Description: A closer examination of Newton's formula for air resistance shows that it is well to consider the air as an ordinary fluid, and, indeed for most of the velocities considered, as a non-compressible fluid, so long as the dimensions of the moving body are large in comparison with the mean free path of the particles of air.
Date: April 1923
Creator: Prandtl, L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Nichols Wing Cutting Equipment

Description: Described here is wing cutting equipment for the economical production of metal wings for wind tunnel models. The machine will make any size of constant-section wing or strut up to one-sixth inch chord by 36-inch span and up to a thickness of one and one-quarter inches. It cuts a smooth, true model that is accurate to within two-thousandths of an inch on any ordinate. The holding jaws are so designed as to leave the model free of chip marks, and the only hand finishing necessary after the cutti… more
Date: December 1923
Creator: Ford, James B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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