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

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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.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Subsidiary Gap as a Means for Improving Ignition

Description: This report presents the results of an investigation into the utility, action, and design of the auxiliary spark gap as a means for insuring freedom from spark plug failure due to fouling, and also to enable the restarting of fouled plugs. A brief account is given of the use of this gap up to the present time and also of the statements concerning it which have gained some currency, most of which are shown to be erroneous. The simple theory of the action of the series gap is discussed and a deta… more
Date: 1920
Creator: Gorton, W. S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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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.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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General Analysis of Airplane Radiator Problems

Description: Report embodies the results of a very extensive research, both theoretical and experimental, into the problems involved in the dissipation of heat by means of the airplane radiator.
Date: 1919
Creator: Dickinson, H. C.; James, W. S. & Kleinschmidt, R. V.
Item Type: Refine your search to only Report
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.
Item Type: Refine your search to only Report
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.
Item Type: Refine your search to only Report
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.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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General Discussion of Test Methods for Radiators

Description: Report describes the methods and apparatus developed and used in the extensive experimental research into the problems involved in the dissipation of heat by means of the airplane radiator.
Date: 1919
Creator: Dickinson, H. C.; James, W. S. & Brown, W. B.
Item Type: Refine your search to only Report
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.
Item Type: Refine your search to only Report
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.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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A Study of Airplane Ranges and Useful Loads

Description: This report is an analysis of the maximum flight radii of typical large airplanes and a discussion of the way in which the possible length of flight is affected by the change of weight by consumption of fuel during the flight.
Date: 1920
Creator: Coffin, J. G.
Item Type: Refine your search to only Report
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.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Wind Tunnel Balances

Description: Report embodies a description of the balance designed and constructed for the use of the National Advisory Committee for Aeronautics at Langley Field, and also deals with the theory of sensitivity of balances and with the errors to which wind tunnel balances of various types are subject.
Date: 1920
Creator: Warner, Edward P. & Norton, F. H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Tests of NACA 0009, 0012, and 0018 Airfoils in the Full-Scale Tunnel

Description: "An investigation was conducted in the NACA full-scale wind tunnel to determine the aerodynamic characteristics of the NACA 0009, 0012, and 0018 airfoils, with the ultimate purpose of providing data to be used as a basis for comparison with other wind-tunnel data, mainly in the study of scale and turbulence effects. Three symmetrical 6 by 36-foot rectangular airfoils were used. The Reynolds number range for minimum drag was form 1,800,000 to 7,000,000 and for maximum lift, from 1,700,000 to 4,5… more
Date: 1939
Creator: Goett, Harry J. & Bullivant, W. Kenneth
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Pack Method for Compressive Tests of Thin Specimens of Materials Used in Thin-Wall Structures

Description: "The strength of modern lightweight thin-wall structures is generally limited by the strength of the compression members. An adequate design of these members requires a knowledge of the compressive stress-strain graph of the thin-wall material. The "pack" method was developed at the National Bureau of Standards with the support of the National Advisory Committee for Aeronautics to make possible a determination of compressive stress-strain graphs for such material" (p. 133).
Date: August 23, 1938
Creator: Aitchison, C. S. & Tuckerman, L. B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The aerodynamic characteristics of six full-scale propellers having different airfoil sections

Description: From Summary: "Wind-tunnel tests are reported of six 3-blade 10-foot propellers operated in front of a liquid-cooled engine nacelle. The propellers were identical except for blade airfoil sections, which were: Clark y, R.A.F. 6, NACA 4400, NACA 2400-34, NACA 2rsub200, and NACA 6400. The range of blade angles investigated extended for 15 degrees to 40 degrees for all propellers except the Clark y, for which it extended to 45 degrees. The results showed that the range in maximum efficiency betwee… more
Date: 1939
Creator: Biermann, David & Hartman, Edwin P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Airplane Dopes and Doping

Description: Report details some examples of dopes and doping on airplanes and balloons and the various properties of different materials. Topics covered include cellulose nitrate dopes, cellulose acetate dopes, dope covers, application of dopes, and fireproof dopes
Date: 1919
Creator: Smith, W. H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Methods used in the NACA tank for the investigation of the longitudinal-stability characteristics of models of flying boats

Description: Report presents the results of tests of longitudinal stability characteristics of models of several flying boats conducted in the NACA Tank No. 1. These investigations were made for the purpose of (1) determining suitable methods for evaluating the stability characteristics of models of flying boats, and (2) determining the design parameters which have an important effect on the porpoising. This report is mainly concerned with the construction of suitable models, the apparatus, and methods used… more
Date: September 9, 1942
Creator: Olson, Roland E. & Land, Norman S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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An Analysis of Supersonic Aerodynamic Heating With Continuous Fluid Injection

Description: From Introduction: "The aerodynamic heating problem assumes considerable importance at high-supersonic speeds. Sanger and Bredt (reference 1) have calculated the high-speed aerodynamic forces and equilibrium surface temperature at extremely high altitudes where the molecular mean free path is large (free-molecule-flow region) compared with a characteristic body dimension. The theoretical investigation of Lees (reference 2) on the stability of the laminar boundary layer in compressible flow ind… more
Date: September 29, 1949
Creator: Klunker, E. B. & Ivey, H. Reese
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Method for determining the frequency-response characteristics of an element or system from the system transient output response to a known input function

Description: "A method is presented for the determination of the frequency-response characteristics of an element or system by utilizing the transient output response to a known but arbitrary input to the system. Since the application of special inputs, such as step functions or sinusoids, is often imperfect or impractical, a method for utilizing arbitrary inputs is desirable. Simple flight-test data may be reduced by this method to give the frequency response of an aircraft" (p. 1).
Date: 1950
Creator: Curfman, Howard J., Jr. & Gardiner, Robert A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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