Technical Report Archive & Image Library (TRAIL) - 134 Matching Results

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Aerodynamic Characteristics of Airfoils 3: Continuation of Reports Nos. 93 and 124

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 Ad… more
Date: 1924~
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Aerodynamic Forces on Airship Hulls

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 … more
Date: 1924
Creator: Munk, Max M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Aeronautic Instruments

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" (p. 1).
Date: February 1924
Creator: Everling, E. & Koppe, H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Air-Flow Experiments

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.
Date: May 1924
Creator: Wieselsberger, C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Air Forces Exerted on Streamlined Bodies with Round or Square Cross- Sections, When Placed Obliquely to the Airstream

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" (p. 1).
Date: June 1924
Creator: Wieselsberger, C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Air Transport

Description: Report presenting the development in air transport that has taken place since civil aviation between England and Europe started at the end of August 1919. The primary subjects explored include the character of loads on aircraft, routes operated, results in passengers carried and efficiency of the service, costs of the service, question of subsidies, and probable future developments.
Date: 1924
Creator: Page, F. Handley
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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An airship slide rule

Description: From Introduction: "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."
Date: 1924%
Creator: Weaver, E. R. & Pickering, S. F.
Item Type: Refine your search to only Report
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.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Aviation Engines in the Endurance Contest

Description: The contest for engines of great endurance had entries of 13 types by the following firms: Breguet, Farman, Fiat, Hispano-Suiza, Lorraine-Dietrich, Panhard-Levassor, Peugeot, Renault, and Salmson.
Date: December 1924
Creator: Lehr, G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Balloon Flight and Atmospheric Electricity

Description: "The air is known to be charged with electricity (chiefly positive) with reference to the earth, so that its potential increases with the altitude and the difference in potential between two points in the same vertical line, divided by the distance between them, gives a value called the "potential gradient," which may vary greatly with the altitude, the nature of the ground and the atmospheric conditions" (p. 1).
Date: July 1924
Creator: Herrera, Emilio
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Calculation of the hull and of the car-suspension systems of airships

Description: Differential and integral curves are presented and well as numerous calculations relating to hulls. Some of the calculations include those relating to hulls, those relating to the invariability of the shape of the hulls, and those relating to the suspension of the hull.
Date: October 1924
Creator: Verduzio, R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Central District Bituminous Coals as Water-Gas Generator Fuel

Description: From Introduction Scope of Investigation: "The purpose of the present paper is to discuss, in some detail, the principles involved in water-gas manufacture as they apply to the use of bituminous generator fuel; and to discuss in more detail the results obtained in the Streator tests and the application in other plants of the operating methods."
Date: 1924
Creator: Odell, W. W. & Dunkley, W. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Coal-Mine Fatalities in the United States, 1923

Description: Report compiled by the U.S. Bureau of Mines including statistics on fatalities in coal mines located in the United States as well as data regarding the various operations (e.g., number of miners employed and average production). The information is organized into tables for comparison and the text draws some overall conclusions in the summary.
Date: 1924
Creator: Adams, William W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Coal-Mining Problems in the State of Washington

Description: From Introduction: "On account of extensive folding and faulting of the coal measures, mining in Washington presents many difficulties; therefore a description of the methods employed at some of the mines may be useful in planning operations in other regions, and is presented in this bulletin."
Date: 1924
Creator: Evans, George Watkin
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Combustion of Liquid Fuels in Diesel Engine

Description: Hitherto, definite specifications have always been made for fuel oils and they have been classified as more or less good or non-utilizable. The present aim, however, is to build Diesel engines capable of using even the poorest liquid fuels and especially the waste products of the oil industry, without special chemical or physical preparation.
Date: October 1924
Creator: Alt, Otto
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Comparing the Performance of Geometrically Similar Airplanes

Description: "This note has been prepared for the National Advisory Committee for Aeronautics. It deals with the model rules relating to aeronautical problems, and shows how the characteristics of one airplane can be determined from those of another airplane of different weight or size, and of similar type. If certain rules for the ratios of the dimensions, the weights and the horsepower are followed, a small low-powered airplane can be used for obtaining information as to performance, stability, controllab… more
Date: April 1924
Creator: Munk, Max M. & Warner, Edward P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Complete Study of Longitudinal Oscillation of a VE-7 Airplane

Description: "This investigation was carried out by the National Advisory Committee for Aeronautics at Langley Field in order to study as closely as possible the behavior of an airplane when it was making a longitudinal oscillation. The airspeed, the altitude, the angle with the horizon and the angle of attack were all recorded simultaneously and the resulting curves plotted to the same time scale. The results show that all the curves are very close to damped sine curves, with the curves for height and angl… more
Date: 1924
Creator: Norton, F. H. & Brown, W. G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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