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  Partner: UNT Libraries Government Documents Department
 Collection: Technical Report Archive and Image Library
Some principles governing the establishment of meteorological stations along air routes

Some principles governing the establishment of meteorological stations along air routes

Date: March 1, 1922
Creator: Aujames, P
Description: The organization of a meteorological service for an air route involves the solution of two distinct problems: distribution and grouping of meteorological stations and communications. Experience gained in the establishment of two lines, Paris-Warsaw and Constantinople-Bucharest enables us to establish certain principles, which may be of interest to note here.
Contributing Partner: UNT Libraries Government Documents Department
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 problems on the theory of creep

Some problems on the theory of creep

Date: April 1, 1953
Creator: Rabotnov, Y N
Description: The term creep of metals is applied to the phenomenon in which, at temperatures beyond a certain limit, the metal subjected to a load slowly undergoes deformation with time. For the case of steel, the creep phenomenon must be taken into account at temperatures above 400 degrees C. Very slow deformations for a prolonged period are cumulative and lead either to inadmissible changes in the dimensions of a structural part or to its failure. The theory of creep constitutes part of the mechanics of dense media and the mechanical formulation of the problem may be given as the following: a body is subjected to the action of a given system of forces, or initial displacements are prescribed on its surface. It is required to find the stress distribution in the body and the changes or its deformations with time. For the solution of the problem of creep as thus formulated, a mechanical theory of creep is required. Such theory must necessarily bear an external, overall character based, not on the investigation of microprocesses, but on the results of mechanical tests.
Contributing Partner: UNT Libraries Government Documents Department
Some properties of beryllium oxide and beryllium oxide - columbium ceramals

Some properties of beryllium oxide and beryllium oxide - columbium ceramals

Date: March 2, 1951
Creator: Robards, C F & Gangler, J J
Description: High-temperature tensile and thermal-shock investigations were conducted on beryllium oxide and beryllium oxide plus columbium metal additions. X-ray diffraction and metallographic results are given. The tensile strength of 6150 pounds per square inch for beryllium oxide at 1800 degrees F compared favorably with the zirconia bodies previously tested. Additions of 2, 5, 8, 10, 12, and 15 percent by weight of columbium metal failed to improve the shock resistance over that of pure beryllium oxide.
Contributing Partner: UNT Libraries Government Documents Department
Some properties of wing and half-body arrangements at supersonic speeds

Some properties of wing and half-body arrangements at supersonic speeds

Date: July 22, 1957
Creator: Migotsky, Eugene & Adams, Gaynor, J
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Some Recent Contributions to the Study of Transition and Turbulent Boundary Layers

Some Recent Contributions to the Study of Transition and Turbulent Boundary Layers

Date: April 1947
Creator: Dryden, Hugh L.
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Some recent experimental data on three-dimensional oscillating air forces

Some recent experimental data on three-dimensional oscillating air forces

Date: June 27, 1955
Creator: Leadbetter, Sumner A & Clevenson, Sherman A
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Some References on Metric Information, Including a Chart on All You Need to Know About Metric

Some References on Metric Information, Including a Chart on All You Need to Know About Metric

Date: January 1977
Creator: United States. National Bureau of Standards.
Description: Pamphlet issued by the United States National Bureau of Standards containing a list of government pamphlets, reports, and other resources related to the metric system of measurement. It includes a form for ordering materials from the Government Printing Office as well as an illustrated description of everyday conversions for weight, volume, length, and temperature.
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