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  Partner: UNT Libraries Government Documents Department
 Decade: 1920-1929
 Collection: Technical Report Archive and Image Library
Some Principles Governing the Production of Oil Wells

Some Principles Governing the Production of Oil Wells

Date: 1921
Creator: Beal, Carl H. & Lewis, J. O.
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Some problems on the lift and rolling moment of airplane wings

Some problems on the lift and rolling moment of airplane wings

Date: January 1, 1925
Creator: Scarborough, James B
Description: This report deals with the application of the airfoil and twisted wing theory to the calculation of the lift and rolling moment of airplane wings. Most of the results arrived at are strictly true only for wings of elliptic plan form. The investigation aims to give some indications of the accuracy with which the results can be applied to the wing forms in actual use.
Contributing Partner: UNT Libraries Government Documents Department
Some remarks concerning soaring flight

Some remarks concerning soaring flight

Date: October 1, 1921
Creator: Prandtl, L
Description: The publication of the following details is due to the desire of the editor to have the problems of soaring flight treated on the occasion of the Rhone Soaring Flight Contest.
Contributing Partner: UNT Libraries Government Documents Department
Some studies on the aerodynamic effect of the gap between airplane wings and fuselages

Some studies on the aerodynamic effect of the gap between airplane wings and fuselages

Date: November 1, 1929
Creator: Ober, Shatswell
Description: The general result indicated by this study is that if desirable from any viewpoint the gap between wing and fuselage may be closed without detrimental aerodynamic effects, and with a given monoplane there is less drag if the wing is directly on top of the fuselage than if it is parasol.
Contributing Partner: UNT Libraries Government Documents Department
Some tables of the factor of apparent additional mass

Some tables of the factor of apparent additional mass

Date: July 1, 1924
Creator: Munk, Max M
Description: This note, prepared for publication by the National Advisory Committee for Aeronautics, is a collection of the tables of the factor of apparent mass that have been published up to now. The theory of the motion of solids in a perfect fluid is of the greatest value for the study of most aerodynamic problems, and the additional apparent mass of an immersed solid is the most important characteristic for such theoretical numerical computations. It will therefore be helpful to have the most important values of the apparent mass - for some elementary cases - collected in a convenient form.
Contributing Partner: UNT Libraries Government Documents Department
Sources of Limestone, Gypsum, and Anhydrite for Dusting Coal Mines to Prevent Explosions

Sources of Limestone, Gypsum, and Anhydrite for Dusting Coal Mines to Prevent Explosions

Date: 1925
Creator: Bowles, Oliver
Description: None
Contributing Partner: UNT Libraries Government Documents Department
The spacing of orifices for the measure of pressure distributions

The spacing of orifices for the measure of pressure distributions

Date: January 1, 1926
Creator: Munk, Max M
Description: The following report has been prepared for publication by the NACA. Suitable locations of orifices for the measurement of pressure distributions have been discussed. Tables are given for quickly laying out these locations and for quickly and easily computing the resultant air forces from the result of the measurements.
Contributing Partner: UNT Libraries Government Documents Department
The span as a fundamental factor in airplane design

The span as a fundamental factor in airplane design

Date: September 1, 1928
Creator: Lachmann, G
Description: Previous theoretical investigations of steady curvilinear flight did not afford a suitable criterion of "maneuverability," which is very important for judging combat, sport and stunt-flying airplanes. The idea of rolling ability, i.e., of the speed of rotation of the airplane about its X axis in rectilinear flight at constant speed and for a constant, suddenly produced deflection of the ailerons, is introduced and tested under simplified assumptions for the air-force distribution over the span. This leads to the following conclusions: the effect of the moment of inertia about the X axis is negligibly small, since the speed of rotation very quickly reaches a uniform value.
Contributing Partner: UNT Libraries Government Documents Department
Spark plug defects and tests

Spark plug defects and tests

Date: January 1, 1920
Creator: Silsbee, F B; Loeb, L B; Sawyer, L G; Fonseca, E L; Dickinson, H C & Agnew, P G
Description: The successful operation of the spark plug depends to a large extent on the gas tightness of the plug. Part 1 of this report describes the method used for measuring the gas tightness of aviation spark plugs. Part 2 describes the methods used in testing the electrical conductivity of the insulation material when hot. Part 3 describes the testing of the cold dielectric strength of the insulation material, the resistance to mechanical shock, and the final engine test.
Contributing Partner: UNT Libraries Government Documents Department
The sparking voltage of spark plugs

The sparking voltage of spark plugs

Date: January 1, 1925
Creator: Silsbee, F B
Description: This report has been prepared in order to collect and correlate into convenient and useful form the available data on this subject. The importance of the subject lies in the fact that it forms the common meeting ground for studies of the performance of spark generators and spark plugs on the one hand and of the internal combustion engines on the other hand. While much of the data presented was obtained from various earlier publications, numerous places were found where necessary data were lacking, and these have been provided by experiments in gasoline engines at the Bureau of Standards.
Contributing Partner: UNT Libraries Government Documents Department