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Recent Developments in Light Alloys

Description: This report is intended to cover the progress that has been made in both the manufacture and utility of light alloys in the United States since the first part of 1919. Duralumin is extensively discussed both as to manufacture and durability.
Date: November 1920
Creator: Woodward, R. W.
Partner: UNT Libraries Government Documents Department
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Tests of Artificial Flight at High Altitudes

Description: "If we wish to form an accurate idea of the extraordinary progress achieved in aeronautics, a comparison must be made of the latest altitude records and the figures regarded as highest attainable limit some ten years ago. It is desirable, for two reasons, that we should be able to define the limit of the altitudes that can be reached without artificial aid. First, to know to what extent the human body can endure the inhalation of rarified air. Second, the mental capacity of the aviator must be … more
Date: November 1920
Creator: Gradenwitz, Arthur
Partner: UNT Libraries Government Documents Department
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Variable Pitch Propellers

Description: In this report are described four different types of propellers which appeared at widely separated dates, but which were exhibited together at the last Salon de l'Aeronautique. The four propellers are the Chaviere variable pitch propeller, the variable pitch propeller used on the Clement Bayard dirigible, the variable pitch propeller used on Italian dirigibles, and the Levasseur variable pitch propeller.
Date: November 1920
Creator: Bacon, D. L.
Partner: UNT Libraries Government Documents Department
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Aeronautic Instruction in Germany

Description: This report contains a list of the courses relating to aeronautics announced in Germany, both in the technical high schools and in the universities.
Date: November 1921
Creator: Bouche, Henri
Partner: UNT Libraries Government Documents Department
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The danger of stalled flight and an analysis of the factors which govern it

Description: A definition of "stalled fight" is presented as well as a detailed discussion on the how and why it occurs. Some suggestions are made to prevent its occurrence such as carrying an air speed instrument in the airplane.
Date: November 1921
Creator: Hopf, L.
Partner: UNT Libraries Government Documents Department
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Establishment of Aviation Schools

Description: Report presenting a discussion of the creation of a suitable aviation school and some of the characteristics that should be considered in terms of hiring personnel, creating a curriculum, and obtaining equipment.
Date: November 1921
Creator: Kempe, Erich
Partner: UNT Libraries Government Documents Department
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Pressure Measurements During Flight

Description: The general idea was to record the air pressure on the spot, that is, without intervening tubes, by some simple automatic registering device. This was therefore made in such small dimensions that it could be inserted into the wing between the ribs and stand in direct connection with the pressure openings. The results of different experiments are presented along with the best locations for locating the instruments for recording the pressure.
Date: November 1921
Creator: Pröll, A.
Partner: UNT Libraries Government Documents Department
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Traffic Airships With Special Reference to Economy

Description: The first part of this report details the efficiency and economy of airship travel, while the second part presents methods of economic efficiency with regards to construction, cost of upkeep and operation, and the establishment of airship lines.
Date: November 1921
Creator: Leyensetter, Walther
Partner: UNT Libraries Government Documents Department
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Aeronautical Museums

Description: Different methods of presenting aeronautical artifacts are examined. The advantages of operating an aeronautical museum and its ability to increase public interest in aircraft are provided.
Date: November 1922
Creator: Warner, Edward P.
Partner: UNT Libraries Government Documents Department
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Air reactions to objects moving at rates above the velocity of sound with application to the air propeller

Description: From Discussion: "To meet these unusual conditions three sets of ball-bearings were employed and arranged in tandem, thereby reducing their speeds by the ratio of the number of sets used, as shown in Fig.3. This proved to be a complete success. The results obtained in experiments with a two-blade, 4 foot propeller of series 2, are given in Fig. 9."
Date: November 1922
Creator: Reed, S. Albert
Partner: UNT Libraries Government Documents Department
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Causes of Failure of Airship Sheds

Description: Different causes of airship shed collapse are discussed, with suction and human carelessness being the prime causes.
Date: November 1922
Creator: Sonntag, R. & Hoff, W.
Partner: UNT Libraries Government Documents Department
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Commercial Aviation in France

Description: In the present state of things, there are three great problems to be solved, relating respectively to the financial, technical, and commercial aspects of the question of commercial aviation.
Date: November 1922
Partner: UNT Libraries Government Documents Department
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Comparison of Nonrigid and Semirigid Airships

Description: "One of the main subjects of airship science consists in establishing cooperation between two vertical forces, the buoyancy of the air and the attraction of gravity. The mechanism for establishing this cooperation must have the minimum weight and offer the minimum head resistance. Starting with this principle, let us consider what improvements can be made in the present type of non-rigid airships" (p. 1).
Date: November 1922
Creator: Stapfer
Partner: UNT Libraries Government Documents Department
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The Development of the Racing Airplane

Description: Report describing the development of the racing airplane and some of the types of airplanes that might be seen at the Detroit airplane races. The primary contribution of racing aircraft to general aircraft development is the modification in design that makes it possible to cut down the resistance to motion through the air.
Date: November 1922
Creator: Warner, Edward P.
Partner: UNT Libraries Government Documents Department
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Effect of Method of Suspending Models in Airstream on Resulting Measurements

Description: Two different suspension methods for testing models in a wind tunnel are profiled with the Eiffel laboratory using rods and the Gottingen lab using wires. The method using wires is shown to be a much superior method.
Date: November 1922
Creator: Wieselsberger, C.
Partner: UNT Libraries Government Documents Department
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How to Lay Out and Build an Airplane Landing Field: Notes on Shape and Size of Plot, Runway Details, Type and Arrangement of Buildings, Drainage of Field, Best Kind of Grass and Proper Marking to Aid Pilots

Description: Report presenting a description of considerations that go into the layout and building of an aircraft landing field or airstrip. Some of the elements considered include the shape and size of the plot, general arrangement, buildings present near the airstrip, runways, grass, roadways and railroad tracks, field markings, and some miscellaneous factors are provided.
Date: November 1922
Creator: Black, Archibald
Partner: UNT Libraries Government Documents Department
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Lessons of the Glider Meets

Description: Report describing some information that has been learned from three different glider meets. While light loading was assumed to be the optimal conformation from previous meets, subsequent meets have shown that heavier loading produced better results.
Date: November 1922
Creator: Warner, Edward P.
Partner: UNT Libraries Government Documents Department
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Location of Center of Pressure of Airplane Wings

Description: Data obtained in the Gottingen Aerodynamic Laboratory give considerable detail on the resulting air force moment exerted on various wing sections at different angles of attack. The Gottingen data can serve well to test the hydrodynamic theory, which (on the assumption of uniform motion and hence of infinitely wide wings) renders it possible to compute this moment as a function of the angle of attack. The Gottigen data can well serve to test the theory and it may be noted that experiment and com… more
Date: November 1922
Creator: Mises
Partner: UNT Libraries Government Documents Department
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Metal Construction of Aircraft

Description: Report presenting some of the early history of metal aircraft construction and its advantages over other types of materials.
Date: November 1922
Creator: Warner, Edward P.
Partner: UNT Libraries Government Documents Department
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Method Rendering It Possible, in Testing Airplane Wing Models at the Eiffel Laboratory, to Obtain Comparable Polars, Whether the Supports Are Attached to the Upper or Lower Side of Model

Description: Report presenting an examination of the errors that result from testing an aircraft model and applying the results to full-sized airplanes. An investigation is carried out to determine how to obtain comparable polars regardless of whether the supports are attached to the upper or lower side of the model.
Date: November 1922
Creator: Eiffel, G.
Partner: UNT Libraries Government Documents Department
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The Organization of Airways

Description: An aircraft freed from all contact with the ground during most of the period of its operation, is nevertheless dependent on the provision of proper ground organization. The provision of landing fields scattered over the country for the benefit of civil or military pilots who may arrive from any direction constitutes the first step in making commercial flying possible.
Date: November 1922
Creator: Warner, Edward P.
Partner: UNT Libraries Government Documents Department
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