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Recent Developments in Light Alloys
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.
System:
The UNT Digital Library
Tests of Artificial Flight at High Altitudes
"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 tested at high altitudes and the limit known below which he is able to make reliable observations without being artificially supplied with oxygen" (p. 1).
Date:
November 1920
Creator:
Gradenwitz, Arthur
System:
The UNT Digital Library
Variable Pitch Propellers
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.
System:
The UNT Digital Library
Aeronautic Instruction in Germany
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
System:
The UNT Digital Library
The danger of stalled flight and an analysis of the factors which govern it
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.
System:
The UNT Digital Library
Establishment of Aviation Schools
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
System:
The UNT Digital Library
Extracts From the Belgian Regulations for Government Assistance to Air Transport Companies
Report presenting information regarding the usage of commercial and passenger service air routes and the fees and penalties involved in operating an air line.
Date:
November 1921
Creator:
unknown
System:
The UNT Digital Library
Pressure Measurements During Flight
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.
System:
The UNT Digital Library
Traffic Airships With Special Reference to Economy
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
System:
The UNT Digital Library
Aeronautical Museums
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.
System:
The UNT Digital Library
Air reactions to objects moving at rates above the velocity of sound with application to the air propeller
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
System:
The UNT Digital Library
Causes of Failure of Airship Sheds
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.
System:
The UNT Digital Library
Commercial Aviation in France
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
Creator:
unknown
System:
The UNT Digital Library
Comparison of Nonrigid and Semirigid Airships
"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
System:
The UNT Digital Library
Definition of Terms Used in Connection With Commercial Aircraft Engines
To facilitate standardization of certain terms and definitions relating to engines and airplanes a list of definitions is provided.
Date:
November 1922
Creator:
Lagarde, Martinot
System:
The UNT Digital Library
The Development of the Racing Airplane
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.
System:
The UNT Digital Library
Effect of Method of Suspending Models in Airstream on Resulting Measurements
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.
System:
The UNT Digital Library
Effect of Temperature and Pressure on Watches and Chronometers
This report examines tests of watches at low temperatures in order to develop a watch suitable for aviators.
Date:
November 1922
Creator:
Leroy
System:
The UNT Digital Library
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
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
System:
The UNT Digital Library
Lessons of the Glider Meets
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.
System:
The UNT Digital Library
Location of Center of Pressure of Airplane Wings
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
System:
The UNT Digital Library
Metal Construction of Aircraft
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.
System:
The UNT Digital Library
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
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.
System:
The UNT Digital Library
The Organization of Airways
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.
System:
The UNT Digital Library