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[Report of Horses by Company F for May 1864]

Description: A report of horses by Company F for the month of May 1864. The report accounts for a total of seventy-two horses.
Date: May 30, 1864
Partner: UNT Libraries Special Collections

The Death Valley Expedition: A Biological Survey of Parts of California, Nevada, Arizona, and Utah, Part 2

Description: Collection of reports on Death Valley, the bordering region of California, Nevada, Arizona, and Utah. Reports include birds, reptiles and Batrachians, fishes, insects, mollusks, trees and shrubs, cactuses and yuccas, and list of localities in the reports.
Date: May 31, 1893
Creator: Fisher, A. K.; Stejneger, Leonhard; Gilbert, Charles H.; Riley, C. V.; Stearns, R. E. C.; Merriam, C. Hart et al.
Partner: UNT Libraries Government Documents Department

Private Signals at Sea, Report

Description: Report of the Committee on Commerce detailing the opinions and recommendations of the Committee on the proposed Senate bill 6958 to provide for private signals at sea. It includes a letter from the Department of Commerce and Labor on the proposed legislation.
Date: May 7, 1908
Creator: United States Congress Senate Committee on Commerce
Partner: UNT Libraries Government Documents Department

Waste of Oil and Gas in the Mid-Continent Fields

Description: Technical paper issued by the Bureau of Mines over studies of waste in oil and gas fields in the mid-continent area. As stated in the introduction, this report "describes the general amounts and kinds of waste, and attempts to show the importance of conserving these natural resources" (p. 5). This paper includes tables, maps, illustrations, and photographs.
Date: May 1914
Creator: Blatchley, Raymond S.
Partner: UNT Libraries Government Documents Department

Aeronautic Power Plant Investigations

Description: Report presents the design of radiators, spark plugs and test equipment used to test the performance of aeronautic engines at high altitudes.
Date: May 1917
Creator: Dickinson, H. C.
Partner: UNT Libraries Government Documents Department

Temperature Measurements in Bessemer and Open-Hearth Practice

Description: Technical paper issued by the Bureau of Standards over studies conducted on different types of furnaces, specifically the Bessemer and the open-hearth furnace. The results of the studies are presented and discussed. This paper includes tables, and illustrations.
Date: May 8, 1917
Creator: Burgess, George K.
Partner: UNT Libraries Government Documents Department

Gold Dredging in the United States

Description: Report discussing the development of gold dredging in the United States, the essential features of present-day dredges, the facts that determine whether a placer deposit can be profitably dredged, and the approved methods of prospecting placer ground and of operating dredges. Intended for designers and builders of dredges, mining engineers, and persons who may contemplate investing capital in placer-mining ventures.
Date: May 1918
Creator: Janin, Charles
Partner: UNT Libraries Government Documents Department

Suggestions for Improved Methods of Mining Coal on Indian Lands in Oklahoma

Description: Technical paper issued by the Bureau of Mines over studies of Oklahoma coal mines. As stated in the introduction, "this report describes the systems of mining used, points out their defects, and presents suggestions for improved methods, more especially as regards the applicability of different modifications of the panel system to mining coal in Oklahoma" (p. 5). This paper includes tables, maps, and illustrations.
Date: May 1918
Creator: Rutledge, J. J. & Harrington, Daniel
Partner: UNT Libraries Government Documents Department

Airplane Performance as Influenced by the Use of a Supercharged Engine

Description: "The question of the influence of a supercharged engine on airplane performance is treated here in a first approximation, but one that gives an exact idea of the advantage of supercharging. Considered here is an airplane that climbs first with an ordinary engine, not supercharged, and afterwards climbs with a supercharged engine. The aim is to find the difference of the ceilings reached in the two cases" (p. 1).
Date: May 1920
Creator: de Bothezat, George
Partner: UNT Libraries Government Documents Department

Notes on the Theory of the Accelerometer

Description: Report discusses several types of accelerometers and how they function. Methods for reducing error and determining the source of the error, including the best placement for the device, are included.
Date: May 1920
Creator: Warner, E. P.
Partner: UNT Libraries Government Documents Department

The Problem of the Helicopter

Description: Report discussing some of the issues regarding the design and operation of helicopters and the theoretical basis behind them. Some particular issues covered include propeller blade design, helicopters in forced descent, horizontal travel, and stability and control.
Date: May 1920
Creator: Warner, E. P.
Partner: UNT Libraries Government Documents Department

Relation of Rib Spacing to Stress in Wing Planes

Description: The stress relations to the fabric and the rib consequent upon a change of spacing between ribs in a wing plane are discussed. Considering the wing plane as a static structure, and ignoring the question of aerodynamic efficiency, it appears that the unit stress in the rib and fabric will remain constant for constant p if the linear dimensions of both rib and fabric are increased alike, viz., if wing and fabric remain geometrically similar. Since the bulge and the structural dimensions remain geometrically similar, the whole distended plane remains so, and hence should have the same pressure distribution and efficiency.
Date: May 1920
Creator: Zahm, A. F.
Partner: UNT Libraries Government Documents Department

Performance of a 300-horsepower Hispano-Suiza airplane engine

Description: The National Bureau of Standards tested a 300-horsepower Hispano-Suiza engine to determine the characteristic performance of the engine at various altitudes. The engine was operated at the ground, at 25,000 feet, and at intermediate altitudes, both at full loads similar to those that would be imposed upon the engine at various speeds by a propeller whose normal full-load speed was 1,800 r.p.m. Friction horsepower also was determined in order that the mechanical efficiency of the engine might be calculated.
Date: May 12, 1920
Creator: Sparrow, S. W. & White, H. S.
Partner: UNT Libraries Government Documents Department

Airplane Superchargers

Description: Discussed here are the principles and operation of aircraft engine superchargers used to maintain and increase engine power as aircraft encounter decreases in the density of air as altitude rises. Details are given on the design and operation of the centrifugal compressors. A method is given for calculating the amount of power needed to drive a compressor. The effects of the use of a compressor on fuel system operation and design are discussed. Several specific superchargers that were in operation are described.
Date: May 1921
Creator: Noack, W. G.
Partner: UNT Libraries Government Documents Department

British Certificates of Airworthiness

Description: This report details the rules and regulations for obtaining a British airworthiness certificate. Aircraft loading and construction are especially important.
Date: May 1921
Partner: UNT Libraries Government Documents Department

On a New Type of Wind Tunnel

Description: Discussed here is a new type of wind tunnel, its advantages, the difficulties attendant upon its use, and the special methods required for its operation. The main difference between the new type of wind tunnel and the ones now in operation is the use of a different fluid. The idea is to diminish the effect of viscosity.
Date: May 1921
Creator: Munk, Max
Partner: UNT Libraries Government Documents Department

N.A.C.A. control position recorder

Description: Report discussing a new instrument is described which is capable of simultaneously recording the position of the three controls of an airplane. The records are taken photographically on a standard N.A.C.A. film drum and the instrument can be quickly installed in any airplane.
Date: May 1922
Creator: Norton, F. H.
Partner: UNT Libraries Government Documents Department

Aerial Convention of October 13, 1919

Description: The aerial convention delegates are listed as well as the set of rules that were developed during the session.
Date: May 1922
Creator: Roper
Partner: UNT Libraries Government Documents Department

Air traffic

Description: This report presents a recounting of the steps taken by France to establish national and international regulation over air traffic.
Date: May 1922
Creator: Sudre, G.
Partner: UNT Libraries Government Documents Department

Aviation and Insurance

Description: This article considers some of the causes which hinder the development of aircraft insurance. Different risks are discussed as well as the causes of aircraft accidents. Pilot error, poor airdromes, weather conditions, poorly adapted airplanes, and engine failures are all examined and some conclusions are made.
Date: May 1922
Creator: Mayo, R. H.
Partner: UNT Libraries Government Documents Department

The Choice of Air Routes

Description: The author lists rules for the development and planning of air routes. He uses as examples India and Texas, as well as discussing the need for more landing fields.
Date: May 1922
Creator: Warner, Edward P.
Partner: UNT Libraries Government Documents Department

Mechanical Aids to Flight

Description: This report examines the great utility and safety of using instruments when flying. Instruments can be especially useful in conditions when the pilot has trouble spatially orienting himself.
Date: May 1922
Creator: Warner, Edward P.
Partner: UNT Libraries Government Documents Department

Night Flying

Description: Dr. Warner examines the utility and economy of flying at night when flying passengers. Some of the points discussed include lighted landing fields, the possibility of using airships, and the cost of landing fields.
Date: May 1922
Creator: Warner, Edward P.
Partner: UNT Libraries Government Documents Department