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Industrial Accidents in the California Oil Fields

Description: Report issued by the U.S. Bureau of Mines on a study of the causes of employee accidents in California oil fields during the year of 1921 - 1922. This investigation was conducted to develop safety procedures and future accident prevention. This report includes tables.
Date: December 1923
Creator: Miller, H. C.
Partner: UNT Libraries Government Documents Department
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Aeronautical Record: No. 1 (to June, 1923)

Description: Memorandum presenting an overview of the development of aeronautical industries and commercial aircraft as well as some of the problems that are resulting from it. Details of the aeronautical budget in various countries, organization of the air service, material exports, and airline operations are provided.
Date: December 1923
Partner: UNT Libraries Government Documents Department
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Factors of Safety

Description: Factors of safety serve three purposes: provides against trouble arising from unexpectedly large loads, allows for imperfections of workmanship, represents a depreciation allowance. A consideration of these safety factors is provided in this report.
Date: December 1923
Creator: Warner, Edward P.
Partner: UNT Libraries Government Documents Department
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Experiments With Fabrics for Covering Airplane Wings, to Determine Effect of Method of Installation

Description: Note presenting some information on the effect of changes in the loading and in the disposition of the supporting framework on the covering fabric. The magnitude of the air forces to be taken into account and the corresponding factors of safety to be expected will be covered in a future report. Tables regarding some of these fabric characteristics are provided.
Date: December 1923
Creator: Pröll, A.
Partner: UNT Libraries Government Documents Department
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Reduction in Efficiency of Propellers Due to Slipstream

Description: "In the slipstream behind a propeller there is a considerable amount of kinetic energy which has been imparted to it by the engine without producing any corresponding propeller thrust. The increased absorption of power reduces the propeller efficiency. Attention has been previously directed to this question by Bendemann and Madelung and other writers. Their contribution serves to verify a simple method of calculating the reduction in the propeller efficiency due to the slip stream" (p. 1).
Date: December 1923
Creator: Munk, Max M.
Partner: UNT Libraries Government Documents Department
open access

Compressive Strength of Tapered Airplane Struts

Description: Note presenting methods for ascertaining the value of n in Euler's simplified formula, which can be used for the compressive strength of tapered airplane struts, by estimating from curves and by calculation.
Date: December 1923
Creator: Lewe, Viktor
Partner: UNT Libraries Government Documents Department
open access

The Nichols Wing Cutting Equipment

Description: Described here is wing cutting equipment for the economical production of metal wings for wind tunnel models. The machine will make any size of constant-section wing or strut up to one-sixth inch chord by 36-inch span and up to a thickness of one and one-quarter inches. It cuts a smooth, true model that is accurate to within two-thousandths of an inch on any ordinate. The holding jaws are so designed as to leave the model free of chip marks, and the only hand finishing necessary after the cutti… more
Date: December 1923
Creator: Ford, James B.
Partner: UNT Libraries Government Documents Department
open access

Compressive Strength of Tapered Airplane Struts

Description: Methods are here given for ascertaining the value of n in Euler's simplified formula, P = n (EI/l(sup 2)), for the compressive strength of tapered airplane struts, by estimating from curves and by calculation.
Date: December 1923
Creator: Lewe, Viktor
Partner: UNT Libraries Government Documents Department
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