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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.
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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Type of Engine to Employ

Description: The engine of a commercial airplane must, above all, be sure and durable. It seems therefore, that we must use engines with vertical cylinders or in the V form with quite a small angle.
Date: November 1922
Creator: Hamel, M.
Partner: UNT Libraries Government Documents Department
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The Usefulness of Stunting

Description: Stunting is an important part of the training of a military pilot, and the knowledge gained in passing through the "acrobatic course" is put to constant use in service, especially with fighting aircraft.
Date: November 1922
Creator: Warner, Edward P.
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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Rigid Airships

Description: Memorandum presenting the history and development of airships. Tables containing information and statistics regarding some of the current airships are provided.
Date: November 1923
Creator: Stahl, Friedrich
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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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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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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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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Principle of the Boerner Airship

Description: "The Boerner airship is built on entirely different principles from ordinary airships, of which the Zeppelin is the best known type. Mr. Boerner has abandoned the rigid body of the Zeppelin and has adopted a body with a double keel forming a rigid platform for attaching the gas ballonets, which must support the whole in the air" (p. 1).
Date: November 1922
Creator: Kapteyn, A.
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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The "Universal" Adjustable and Reversible Propeller Built by Paragon Engineers, Inc., Baltimore, MD

Description: "A device which does for the aircraft what change speed gears do for the automobile is the invention of Spencer Heath. It comprises a system of special blades and a mechanism for varying the pitch of the blades from zero to 360 degrees, while in flight or otherwise. By adjusting the pitch, either before starting or while the engine is running, to a less than normal angle, the engine is allowed to pick up speed and deliver its maximum power which is necessary in taking-off with a heavier load than the same airplane could otherwise normally carry" (p. 1).
Date: November 1922
Creator: Bacon, David L.
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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Selling Air Transport

Description: The marketing and advertising of air transport is discussed in this article.
Date: November 1922
Creator: Warner, Edward P.
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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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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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 computation compare favorably.
Date: November 1922
Creator: Mises
Partner: UNT Libraries Government Documents Department
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The American Airship ZR-3

Description: This airship was built by the Zeppelin Airship Company at Friedrichshafen in 1923-4, for the United States Navy, as the reparations service of the German Government in fulfillment of the treaty of peace. A description of the design, components, flight characteristics, blueprints, and photographs are provided.
Date: November 1924
Creator: Dürr, L.
Partner: UNT Libraries Government Documents Department
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Stieber Dynamometer Hub for Aircraft Propellers

Description: The knowledge gained from previous experiments and reports was utilized for the construction of a dynamometer hub for 200 mkg (134.4 ft.-lb.) and 1200 kg (2646 lb.) thrust suited for a Liberty "12" engine. A reversing device is also described.
Date: November 1924
Creator: Stieber, W.
Partner: UNT Libraries Government Documents Department
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