National Advisory Committee for Aeronautics (NACA) - 1,423 Matching Results

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Characteristics of High-Tension Magnetos

Description: This report gives the results of an investigation made into the fundamental physical characteristics of high-tension ignition magnetos, and also describes the methods used for measuring the quantities involved.
Date: 1920
Creator: Silsbee, F. B.
Partner: UNT Libraries Government Documents Department
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Development of Air Speed Nozzles

Description: Report describes the development of a suitable speed nozzle for the first few thousand airplanes made by the United States during the recent war in Europe, and to furnish a basis for more mature instruments in the future. Requirements for the project were to provide a suitable pressure collector for aircraft speed meters and to develop a speed nozzle which would be waterproof, powerful, unaffected by slight pitch and yaw, rugged and easy to manufacture, and uniform in structure and reading, so … more
Date: 1920
Creator: Zahm, A. F.
Partner: UNT Libraries Government Documents Department
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Effect of Altitude on Radiator Performance

Description: As an airplane rises to high altitudes the decrease in the density and the temperature of the air have important effects on the performance of the radiator. This report gives the results of a study of the effect of reduced pressure and temperature upon the capacity of airplane radiators. A method is presented by which the performance of a radiator at an altitude may be estimated for a particular speed of the airplane at a particular altitude.
Date: 1920
Creator: James, W. S. & Parsons, S. R.
Partner: UNT Libraries Government Documents Department
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The Efficiency of Small Bearings in Instruments of the Type Used in Aircraft

Description: This report deals with the construction and properties of bearings and pivots for use in instruments. The static and running friction for both thrust and radial loads was determined for a number of conical pivots and cylindrical and ball bearings. The static rocking friction was also measured for several conical and ball bearings under a heavy load, especially to determine their suitability for use in N. P. L. (National Physical Laboratory) type wind tunnel balance.
Date: 1920
Creator: Norton, F. H.
Partner: UNT Libraries Government Documents Department
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Experimental Research on Air Propellers, 3

Description: Report presents the results of wind tunnel tests of propellers that examined the influence of the following characteristics: (1) nominal pitch ratio 1.3 combined with a certain number of the more common or standard forms and proportions; (2) driving face slightly rounded or convex; (3) change in the location of the maximum thickness ordinate of the blade section; (4) pushing forward the leading edge of the blade, thus giving a rounded convex surface on the leading side of the driving face. (5) … more
Date: 1920
Creator: Durand, W. F. & Lesley, E. P.
Partner: UNT Libraries Government Documents Department
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Fabric Fastenings

Description: The study of aeronautical fabrics has led to a consideration of the best methods of attaching and fastening together such materials. This report presents the results of an investigation upon the proper methods of attaching fabrics to airplane wings. The methods recommended in this report have been adopted by the military services.
Date: 1920
Creator: Walen, E. D. & Fisher, R. T.
Partner: UNT Libraries Government Documents Department
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The Ferrosilicon Process for the Generation of Hydrogen

Description: Report describes the generation of hydrogen by the reaction between ferrosilicon, sodium hydroxide, and water. This method known as the ferrosilicon method is especially adapted for use in the military field because of the relatively small size and low cost of the generator required to produce hydrogen at a rapid rate, the small operating force required, and the fact that no power is used except the small amount required to operate the stirring and pumping machinery. These advantages make it po… more
Date: 1920
Creator: Weaver, E. R.; Berry, W. M.; Bohnson, V. L. & Gordon, B. D.
Partner: UNT Libraries Government Documents Department
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Fuselage Stress Analysis

Description: Report analyzes the stresses in a fuselage of the built-up type in which the shear is taken by diagonal bracing wires. Tests are conducted for landing, flying, and thrust loads.
Date: 1920
Creator: Warner, Edward P. & Miller, Roy G.
Partner: UNT Libraries Government Documents Department
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Glues Used in Airplane Parts

Description: This report was prepared for the National Advisory Committee for Aeronautics and presents the results of investigations conducted by the Forest Products Laboratory of the United States Forest Service on the manufacture, preparation, application, testing and physical properties of the different types of glues used in wood airplane parts.
Date: 1920
Creator: Allen, S. W. & Truax, T. R.
Partner: UNT Libraries Government Documents Department
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Head Resistance Due to Radiators

Description: Part 1 deals with the head resistance of a number of common types of radiator cores at different speeds in free air, as measured in the wind tunnel at the bureau of standards. Part 2 gives the results of wind tunnel tests of resistance on a model fuselage with a nose radiator. Part 3 presents the results of preliminary tests of head resistance of a radiator enclosed in a streamlined casing.
Date: 1920
Creator: Kleinschmidt, R. V. & Parsons, S. R.
Partner: UNT Libraries Government Documents Department
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Heat Energy of Various Ignition Sparks

Description: "This report describes a method developed at the Bureau of Standards for measuring the total energy liberated as heat in a spark gap by an ignition system. Since this heat energy is obtained from the electromagnetic energy stored in the windings of the magneto or coil, it is a measure of the effectiveness of the device as an electric generator" (p. 3).
Date: 1920
Creator: Silsbee, F. B.; Loeb, L. B. & Fonseca, E. L.
Partner: UNT Libraries Government Documents Department
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Investigation of the Muffling Problem for Airplane Engines

Description: The experimentation presented in this report falls in two divisions: first, the determination of the relation between back pressure in the exhaust line and consequent power loss, for various combinations of speed and throttle positions of the engine; second, the construction and trial of muffler designs covering both type and size. Report deals with experiments in the development of a muffler designed on the principle which will give the maximum muffling effect with a minimum loss of power. The… more
Date: 1920
Creator: Upton, G. B. & Gage, V. R.
Partner: UNT Libraries Government Documents Department
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Nomenclature for Aeronautics

Description: Report defines the principal terms which have come into use in the development of aeronautics. It was prepared in cooperation with a committee engaged upon a similar undertaking in Great Britain. As a result this nomenclature is in substantial agreement with the one which has been adopted by the aeronautical authorities of Great Britain.
Date: 1920
Partner: UNT Libraries Government Documents Department
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The Parker Variable Camber Wing

Description: This report deals with the problem of increasing the speed range of an airplane by varying the camber of a wing surface. The variable camber wing offers many advantages over the variable incidence type of speed range.
Date: 1920
Creator: Parker, H. F.
Partner: UNT Libraries Government Documents Department
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Power Characteristics of Fuels for Aircraft Engines

Description: Report presents the summation of results obtained in the testing of fuels of various compositions and characteristics in the altitude laboratory. The data upon which this report is based has had an important influence upon the writing of specifications for the various grades of aviation fuels.
Date: 1920
Creator: Dickinson, H. C.; James, W. S.; Roberts, E. W.; Gage, V. R. & Harper, D. R.
Partner: UNT Libraries Government Documents Department
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Preliminary Report on Free Flight Tests

Description: Results are presented for a series of tests made by the Advisory Committee's staff at Langley Field during the summer of 1919 with the objectives of determining the characteristics of airplanes in flight and the extent to which the actual characteristics differ from those predicted from tests on models in the wind tunnel, and of studying the balance of the machines and the forces which must be applied to the controls in order to maintain longitudinal equilibrium.
Date: 1920
Creator: Warner, E. P. & Norton, F. H.
Partner: UNT Libraries Government Documents Department
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Properties and Preparation of Ceramic Insulators for Spark Plugs

Description: Report describes in detail the preliminary experiments which were made on the conductivity of spark-plug insulators in order to develop a satisfactory comparative method for testing various spark-plug materials. Materials tested were cements, porcelain, feldspar, and quartz.
Date: 1920
Creator: Silsbee, F. B.; Honaman, R. K.; Fonseca, E. L.; Bleininger, A. V. & Staley, H.F.
Partner: UNT Libraries Government Documents Department
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Results of Tests on Radiators for Aircraft Engines

Description: Part 1 is to present the results of tests on 56 types of core in a form convenient for use in the study of the performance of and possible improvements in existing designs. Working rules are given by which the data contained in the report may be used, and the most obvious conclusions as to the behavior of cores are summarized. Part 2 presents the results of tests made to determine the pressure necessary to produce water flows up to 50 gallons per minute through an 8-inch square section of radia… more
Date: 1920
Creator: Dickinson, H. C.; James, W. S. & Kleinschmidt, R. V.
Partner: UNT Libraries Government Documents Department
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Self-Luminous Materials

Description: Report outlines specifications for the preparation and application of self-luminous materials to be used for the illumination of various instruments, especially those used for aeronautics.
Date: 1920
Creator: Dorsey, N. E.
Partner: UNT Libraries Government Documents Department
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