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The Latécoère 521 "Lieutenant De Vaisseau Paris" Commercial Flying Boat (French): A Two-Deck Six-Engine Semicantilever Sesquiplane

Description: Circular presenting a description of the Latécoère 521, which was the largest aircraft built in France at the time. A more detailed description of the wings, hull, accommodation for passengers and officers, fuel system, controls, and flight characteristics is provided.
Date: March 1936
Partner: UNT Libraries Government Documents Department
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The Boundary Layer as a Means of Controlling the Flow of Liquids and Gases

Description: According to one of the main propositions of the boundary layer theory the scarcely noticeable boundary layer may, under certain conditions, have a decisive influence on the form of the external flow by causing it to separate from the wing surface. These phenomena are known to be caused by a kind of stagnation of the boundary layer at the point of separation. The present report deals with similar phenomena. It is important to note that usually the cause (external interference) directly affects … more
Date: March 1930
Creator: Schrenk, Oskar
Partner: UNT Libraries Government Documents Department
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The Bleriot 110 Airplane (French): A Long-Distance High-Wing Monoplane

Description: Circular presenting a description of the Bleriot 110 which is a long-distance airplane mainly distinguished by its fineness and lightness. Details of the fuselage, shape, wing, and power plant are provided.
Date: March 1931
Partner: UNT Libraries Government Documents Department
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Boulton Paul P.71a Commercial Airplane (British): A Two-Engine Biplane

Description: Circular presenting a description of the Boulton Paul P.71A, which is a new type of two-engine biplane. Details of the design, fuel tanks, materials, fuselage, passenger seating, tail, and flying qualities are provided.
Date: March 1935
Partner: UNT Libraries Government Documents Department
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Polish P Type Single-Seat Fighters: All-Metal Gull-Type Wing Monoplanes

Description: Circular describing the Polish P.I and P.VIII airplanes, which are both all-metal gull-type wing monoplanes that differ in the type of engine used, their wing area, and their landing gears. Details of the components, design, differences, characteristics, load distribution, performance, drawings, and photographs are provided.
Date: March 1931
Partner: UNT Libraries Government Documents Department
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Static Longitudinal Stability Of "Ente" Airplanes

Description: The stability conditions of Ente (duck) airplanes are investigated in this report. In developing the formulas, which afford an approximate solution, the unimportant effect of the height of the C.G. and the moment of the residual resistance are neglected. The effect of downwash from the forward horizontal empennage on the wing are also disregarded.
Date: March 1931
Creator: Kiel, Heinrich Georg
Partner: UNT Libraries Government Documents Department
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Problems Concerning the Stability and Maneuverability of Airplanes

Description: "The stability of an airplane can be easily determined by wind-tunnel tests, especially by simple tests with models mounted wind-vane fashion. However, each stability curve plotted by this method is valid only for a certain setting of the corresponding control surface, i.e., it characterizes the stability of the airplane with the control stick in a given position. The problems thus defined are studied from the point of view of longitudinal and transverse stability. Directional stability is not … more
Date: March 1932
Creator: Biche, Jean
Partner: UNT Libraries Government Documents Department
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Accurate Calculation of Multispar Cantilever and Semicantilever Wings With Parallel Webs Under Direct and Indirect Loading

Description: In the present report the computation is actually carried through for the case of parallel spars of equal resistance in bending without direct loading, including plotting of the influence lines; for other cases the method of calculation is explained. The development of large size airplanes can be speeded up by accurate methods of calculation such as this.
Date: March 1932
Creator: Sänger, Eugen
Partner: UNT Libraries Government Documents Department
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Elmira Soaring Contest, 1930

Description: This report details the Elmira, New York soaring contest of 1930 and provides up-current maps, experiences in piloting, distance flights, and a few details on glider design.
Date: March 1931
Creator: Hirth, Wolfram K. E.; Schempp, Martin H. & Herrick, Jack
Partner: UNT Libraries Government Documents Department
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The C.A.M.S. 80 Amphibian (French): An Observation Monoplane

Description: Circular presenting a description of the C.A.M.S. 80, which is a shipboard or observation patrol, light-bombing, long-range amphibian. Details of the hull, landing gear, wing, tail surfaces, power plant, front cockpit, pilot's compartment, photographer's compartment, radio cabinet, rear gunner's cockpit, stern compartment, and flying qualities are provided.
Date: March 1932
Partner: UNT Libraries Government Documents Department
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Development and Production History on the Salt Flat and Other Fault Fields of East Central Texas

Description: Report issued by the Bureau of Mines over the Salt Flat fields in East Central Texas. As stated in the introduction, "this report deals with the development and production history of the Salt Flat field and gives comparative data on five outstanding fault fields. Two of these fields are producing from limestone and three from sandstone reservoirs" (p. 2-3). This report includes tables, maps, photographs, and illustrations.
Date: March 1931
Creator: Hill, Harry Blackburn; Bauserman, E. V. H. & Carpenter, C. B.
Partner: UNT Libraries Government Documents Department
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Coal-Mine Fatalities in February, 1931

Description: Report issued by the U.S. Bureau of Mines on the coal mine related deaths during the month of February, 1931. The number of fatalities and the causes of each are presented. This report includes tables.
Date: March 1931
Creator: Adams, William Waugh & Chenoweth, L.
Partner: UNT Libraries Government Documents Department
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Applied Potential Corrosion of Aluminum and 18-8 Stainless Steel Alloys

Description: Introduction: In anticipation of the design of equipment for heat transfer tests, a series of short exposure corrosion tests was initiated in an effort to determine the order of magnitude of the corrosion involved. Information was required on the effect on corrosion rates of applying a potential between two concentric tubes, the annulus between them containing condensate water.
Date: March 13, 1930
Creator: Sanborn, Kenneth L.
Partner: UNT Libraries Government Documents Department
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German Aircraft Accident Statistics, 1930

Description: The investigation of all serious accidents, involving technical defects in the airplane or engine, is undertaken by the D.V.L. in conjunction with the imperial traffic minister and other interested parties. All accidents not clearly explained in the reports are subsequently cleared up.
Date: March 1932
Creator: Weitzmann, Ludwig
Partner: UNT Libraries Government Documents Department
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Optico-Photographic Measurements of Airplane Deformations

Description: "The deformation of aircraft wings is measured by photographically recording a series of bright shots on a moving paper band sensitive to light. Alternating deformations, especially vibrations, can thus be measured in operation, unaffected by inertia. A handy recording camera, the optograph, was developed by the static division of the D.V.L. (German Experimental Institute for Aeronautics) for the employment of this method of measurement on airplanes in flight" (p. 1).
Date: March 1931
Creator: Küssner, Hans Georg
Partner: UNT Libraries Government Documents Department
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The Electrodynamometric Balance of the Small Wind Tunnel of the French Service of Aeronautical Research

Description: This investigation shows the attempt to improve the electrodynamomoter designed by Mr. Villey. The force to be measured acts on a flexible steel plate which is placed in front of a fixed plate. The deformation varies the original thickness of the layer of air between the two plates, thus causing a more rapid variation in the coefficient of electrostatic attraction of the two plates than in the capacity of the condenser formed by the dynamometer.
Date: March 1930
Creator: Rebuffet, P.
Partner: UNT Libraries Government Documents Department
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Preliminary Report on the Characteristics of the N.A.C.A. 4400R Series Airfoils

Description: Report presenting tests made in the variable-density wind tunnel of airfoils of the NACA 4400 series modified by reflex at the trailing edge designed to reduce the pitching moment to the value of -0.03. The modified airfoils are designated the NACA 4400R series.
Date: March 1939
Creator: Sherman, Albert
Partner: UNT Libraries Government Documents Department
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