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  Partner: UNT Libraries Government Documents Department
 Decade: 1910-1919
 Serial/Series Title: NACA Technical Reports
 Collection: Technical Report Archive and Image Library
Aerodynamic coefficients and transformation tables

Aerodynamic coefficients and transformation tables

Date: January 1, 1918
Creator: Ames, Joseph S
Description: The problem of the transformation of numerical values expressed in one system of units into another set or system of units frequently arises in connection with aerodynamic problems. Report contains aerodynamic coefficients and conversion tables needed to facilitate such transformation. (author).
Contributing Partner: UNT Libraries Government Documents Department
Meteorology and aeronautics

Meteorology and aeronautics

Date: January 1, 1917
Creator: Blair, William R
Description: A handbook in which properties and general phenomena of the atmosphere which aeronauts and aviators should understand are discussed.
Contributing Partner: UNT Libraries Government Documents Department
Temperatures in Spark Plugs Having Steel and Brass Shells

Temperatures in Spark Plugs Having Steel and Brass Shells

Date: January 1, 1919
Creator: Cragoe, C S
Description: This investigation was conducted at the Bureau of Standards for the National Advisory Committee for Aeronautics. Brass has often been assumed superior to steel for spark plug shells because of its greater heat conductivity. The measurements described in this report prove the contrary, showing that the interior of a spark plug having a brass shell is from 50 degrees to 150 degrees c. (90 degrees to 270 degrees f.) hotter than that of a similar steel plug. Consistent results were obtained in both an aviation and a truck engine, and under conditions which eliminated all other sources of difference between the plugs. It is to be concluded that steel is to be preferred to brass for spark plug shells. This report embodies the results of measurements taken of electrodes and a comparison of brass and steel insulators of spark plugs while they were in actual operation. The data throw considerable light upon the problem of the proper control of temperatures in these parts.
Contributing Partner: UNT Libraries Government Documents Department
Aeronautic Power Plant Investigations

Aeronautic Power Plant Investigations

Date: January 1, 1917
Creator: Dickinson, H C
Description: Report presents the design of radiators, spark plugs and test equipment used to test the performance of aeronautic engines at high altitudes.
Contributing Partner: UNT Libraries Government Documents Department
General Discussion of Test Methods for Radiators

General Discussion of Test Methods for Radiators

Date: January 1, 1919
Creator: Dickinson, H C; James, W S & Brown, W B
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.
Contributing Partner: UNT Libraries Government Documents Department
General Analysis of Airplane Radiator Problems

General Analysis of Airplane Radiator Problems

Date: January 1, 1919
Creator: Dickinson, H C; James, W S & Kleinschmidt, R V
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.
Contributing Partner: UNT Libraries Government Documents Department
Effect of Compression Ratio, Pressure, Temperature, and Humidity on Power

Effect of Compression Ratio, Pressure, Temperature, and Humidity on Power

Date: January 1, 1919
Creator: Dickinson, H C; James, W S; Anderson, G V & Brinkerhoff, V W
Description: Among other factors which affect the horsepower of an airplane engine are the atmospheric pressure, and consequently the altitude at which the engine is working, and the compression ratio, or cylinder volume divided by clearance volume. The tests upon which this report is based were selected from a large number of runs made during the intercomparison of various gasolines to determine the variation of horsepower with altitude at three different compression ratios. The test results and conclusions are presented in this report.
Contributing Partner: UNT Libraries Government Documents Department
Mufflers for aeronautic engines

Mufflers for aeronautic engines

Date: January 1, 1917
Creator: Diederichs, H & Upton, G B
Description: Report presents the design, development and experimental results of muffling devices used to reduce noise generated by the airplane power plant.
Contributing Partner: UNT Libraries Government Documents Department
Experimental research on air propellers

Experimental research on air propellers

Date: January 1, 1918
Creator: Durand, William F
Description: The purposes of the experimental investigation on the performance of air propellers described in this report are as follows: (1) the development of a series of design factors and coefficients drawn from model forms distributed with some regularity over the field of air-propeller design and intended to furnish a basis of check with similar work done in other aerodynamic laboratories, and as a point of departure for the further study of special or individual types and forms; (2) the establishment of a series of experimental values derived from models and intended for later use as a basis for comparison with similar results drawn from certain selected full-sized forms and tested in free flight.
Contributing Partner: UNT Libraries Government Documents Department
Investigations of Balloon and Aeroplane Fabrics

Investigations of Balloon and Aeroplane Fabrics

Date: January 1, 1917
Creator: Gibbons, Willis A & Smith, Omar H
Description: Report presents the experimental results of fabrics used for balloons and aeroplanes. Tensile properties, surface roughness, skin friction, flammability, permeability, and water absorption were tested for different combinations of materials.
Contributing Partner: UNT Libraries Government Documents Department
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