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  Partner: UNT Libraries Government Documents Department
 Decade: 1920-1929
 Year: 1924
 Collection: Technical Report Archive and Image Library
Aerodynamic characteristics of airfoils III : continuation of reports nos. 93 and 124

Aerodynamic characteristics of airfoils III : continuation of reports nos. 93 and 124

Date: January 1, 1924
Creator: unknown
Description: This collection of data on airfoils has been made from the published reports of a number of the leading aerodynamic laboratories of this country and Europe. The information which was originally expressed according to the different customs of the several laboratories is here presented in a uniform series of charts and tables suitable for the use of designing engineers and for purposes of general reference. The absolute system of coefficients has been used, since it is thought by the National Advisory Committee for Aeronautics that this is the one most suited for international use and yet is one for which a desired transformation can be easily made. The authority for the results here presented is given as the name of the laboratory at which the experiments were conducted, with the size of the model, wind velocity, and date of test.
Contributing Partner: UNT Libraries Government Documents Department
The Aerodynamic Forces on Airship Hulls

The Aerodynamic Forces on Airship Hulls

Date: January 1, 1924
Creator: Munk, Max M
Description: This report describes the new method for making computations in connection with the study of rigid airship, which was used in the investigation of the navy's ZR-1 by the special subcommittee of the National Advisory Committee for Aeronautics appointed for this purpose. It presents the general theory of the air forces on airship hulls of the type mentioned, and an attempt has been made to develop the results from the very fundamentals of mechanics without reference to some of the modern highly developed conceptions, which may not yet be thoroughly known to readers uninitiated into modern aerodynamics, and which may, perhaps, for all time remain restricted to a small number of specialists.
Contributing Partner: UNT Libraries Government Documents Department
The Aerodynamic Laboratory of the Belgian Service Technique de L'Aeronautique

The Aerodynamic Laboratory of the Belgian Service Technique de L'Aeronautique

Date: December 1, 1924
Creator: unknown
Description: This report provides a description of the wind tunnel housing and motors.
Contributing Partner: UNT Libraries Government Documents Department
The aerodynamic plane table

The aerodynamic plane table

Date: January 1, 1924
Creator: Zahm, A F
Description: This report gives the description and the use of a specially designed aerodynamic plane table. For the accurate and expeditious geometrical measurement of models in an aerodynamic laboratory, and for miscellaneous truing operations, there is frequent need for a specially equipped plan table. For example, one may have to measure truly to 0.001 inch the offsets of an airfoil at many parts of its surface. Or the offsets of a strut, airship hull, or other carefully formed figure may require exact calipering. Again, a complete airplane model may have to be adjusted for correct incidence at all parts of its surfaces or verified in those parts for conformance to specifications. Such work, if but occasional, may be done on a planing or milling machine; but if frequent, justifies the provision of a special table. For this reason it was found desirable in 1918 to make the table described in this report and to equip it with such gauges and measures as the work should require.
Contributing Partner: UNT Libraries Government Documents Department
Aeronautic instruments

Aeronautic instruments

Date: February 1, 1924
Creator: Koppe, H & Everling, E
Description: The development of aeronautic instruments. Vibrations, rapid changes of the conditions of flight and of atmospheric conditions, influence of the air stream all call for particular design and construction of the individual instruments. This is shown by certain examples of individual instruments and of various classes of instruments for measuring pressure, change of altitude, temperature, velocity, inclination and turning or combinations of these.
Contributing Partner: UNT Libraries Government Documents Department
Air-flow experiments

Air-flow experiments

Date: May 1, 1924
Creator: Wieselsberger, C
Description: This report describes the apparatus used to take air-flow photographs. The photographs show chiefly the spiral course of the lines of flow near the tip of the wing. They constitute therefore a visual presentation of the phenomena covered by airfoil theory.
Contributing Partner: UNT Libraries Government Documents Department
Air Forces Exerted on Streamlined Bodies with Round or Square Cross- Sections, When Placed Obliquely to the Airstream

Air Forces Exerted on Streamlined Bodies with Round or Square Cross- Sections, When Placed Obliquely to the Airstream

Date: June 1, 1924
Creator: Wieselsberger, C
Description: The question of behavior of a streamlined body with round or square cross-sections is of importance in determining the shape to give an airplane fuselage. It is our task here to show how the lift and drag are affected, with the object placed obliquely to the air stream.
Contributing Partner: UNT Libraries Government Documents Department
Air transport

Air transport

Date: January 1, 1924
Creator: Page, F Handley
Description: I purpose (sic) in this paper to deal with the development in air transport which has taken place since civil aviation between England and the Continent first started at the end of August 1919. A great deal of attention has been paid in the press to air services of the future, to the detriment of the consideration of results obtained up to the present.
Contributing Partner: UNT Libraries Government Documents Department
Airplanes in horizontal curvilinear flight

Airplanes in horizontal curvilinear flight

Date: January 1, 1924
Creator: Kann, Heinrich
Description: War airplanes require not only high speed and the ability to climb rapidly, but also the ability to transverse sharp curves quickly. Here, an attempt is made to give a simple method of calculating horizontal curvilinear flight. A method for determining the area of the aileron and rubber surfaces are also indicated. The discussion given here applies primarily to single and two-seater airplanes, although it can be extended to larger airplanes.
Contributing Partner: UNT Libraries Government Documents Department
An airship slide rule

An airship slide rule

Date: January 1, 1924
Creator: Weaver, E R
Description: This report prepared for the National Advisory Committee for Aeronautics, describes an airship slide rule developed by the Gas-Chemistry Section of the Bureau of Standards, at the request of the Bureau of Engineering of the Navy Department. It is intended primarily to give rapid solutions of a few problems of frequent occurrence in airship navigation, but it can be used to advantage in solving a great variety of problems, involving volumes, lifting powers, temperatures, pressures, altitudes and the purity of the balloon gas. The rule is graduated to read directly in the units actually used in making observations, constants and conversion factors being taken care of by the length and location of the scales. It is thought that with this rule practically any problem likely to arise in this class of work can be readily solved after the user has become familiar with the operation of the rule; and that the solution will, in most cases, be as accurate as the data warrant.
Contributing Partner: UNT Libraries Government Documents Department
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