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UNT Libraries Government Documents Department
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NACA Technical Reports
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Technical Report Archive and Image Library
Carbureting conditions characteristics of aircraft engines
Date: January 1, 1920
Creator: Tice, Percival S
Description: Tests were conducted at the altitude laboratory erected at the Bureau of Standards for the National Advisory Committee for Aeronautics to determine the changes in engine performance with changes in atmospheric temperature and pressure at various levels above the earth's surface, with special reference to (a) the variables affecting the functioning of the carburetor and (b) the changes in performance resulting from variables in the carburetor itself. This report constitutes a concise statement of the difficulties to be encountered in this branch of carburetion.
Contributing Partner: UNT Libraries Government Documents Department
Permallink:digital.library.unt.edu/ark:/67531/metadc65667/
Characteristics of high-tension magnetos
Date: January 1, 1920
Creator: Silsbee, F B
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.
Contributing Partner: UNT Libraries Government Documents Department
Permallink:digital.library.unt.edu/ark:/67531/metadc65710/
Comparison of United States and British standard pitot tubes
Date: January 1, 1920
Creator: Zahm, A F
Description: The results shown in this report give a comprehensive comparison of the accuracy of United States and British standard pitot tubes.
Contributing Partner: UNT Libraries Government Documents Department
Permallink:digital.library.unt.edu/ark:/67531/metadc65729/
Construction of models for tests in wind tunnels
Date: January 1, 1920
Creator: Norton, F H
Description: Report deals with the methods of constructing aerofoils and all other parts of a model airplane, including discussion of the degree of accuracy.
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Permallink:digital.library.unt.edu/ark:/67531/metadc65723/
Development of air speed nozzles
Date: January 1, 1920
Creator: Zahm, A F
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 as not to require individual calibration.
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Permallink:digital.library.unt.edu/ark:/67531/metadc65651/
Effect of altitude on radiator performance
Date: January 1, 1920
Creator: James, W S
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.
Contributing Partner: UNT Libraries Government Documents Department
Permallink:digital.library.unt.edu/ark:/67531/metadc65713/
The effect of kiln drying on the strength of airplane woods
Date: January 1, 1920
Creator: Wilson, T R C
Description: This report is a very complete treatise on the comparative strength of air and kiln dried wood. The series of tests includes 26 species of wood, approximately 100 kiln runs, and over 10,000 mechanical tests.
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Permallink:digital.library.unt.edu/ark:/67531/metadc65718/
Effect of temperature and pressure on the sparking voltage
Date: January 1, 1920
Creator: Loeb, L B
Description: This report presents the results of an investigation which was to determine how the voltage necessary to produce the proper spark discharge varies with the pressure and temperature of the gas in which the discharge takes place.
Contributing Partner: UNT Libraries Government Documents Department
Permallink:digital.library.unt.edu/ark:/67531/metadc65706/
Experimental research on air propellers II
Date: January 1, 1920
Creator: Durand, William F
Description: This report is a continuation of NACA Technical Report 14. It presents the results of an experimental investigation on the performance of air propellers which was divided into five parts, as follows: (1) Tests under conditions of flight on 16 model propellers of different forms, sections, or pitch ratios from those of Technical Report 14; (2) Tests under conditions of flight on one model propeller of variable pitch; (3) Tests under conditions of flight on three sets of right and left hand model propellers in series; (4) Tests on 12 model propellers to determine brake effect or negative thrust at negative slip; (5) Standing thrust and power tests of 67 model propellers.
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Permallink:digital.library.unt.edu/ark:/67531/metadc65649/
Experimental research on air propellers III
Date: January 1, 1920
Creator: Durand, W F
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) a series of values for the constant "angle of attack" in forming propellers with radially increasing pitch. In accordance with these purposes tests were carried out on 28 propellers.
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Permallink:digital.library.unt.edu/ark:/67531/metadc65716/